diff options
Diffstat (limited to 'libgcc/config')
| -rw-r--r-- | libgcc/config/gthr-lynx.h | 61 | ||||
| -rw-r--r-- | libgcc/config/gthr-posix.h | 879 | ||||
| -rw-r--r-- | libgcc/config/gthr-rtems.h | 157 | ||||
| -rw-r--r-- | libgcc/config/gthr-vxworks.h | 170 | ||||
| -rw-r--r-- | libgcc/config/i386/gthr-win32.c | 5 | ||||
| -rw-r--r-- | libgcc/config/i386/gthr-win32.h | 772 | ||||
| -rw-r--r-- | libgcc/config/mips/gthr-mipssde.h | 230 | ||||
| -rw-r--r-- | libgcc/config/pa/gthr-dce.h | 563 | ||||
| -rw-r--r-- | libgcc/config/rs6000/gthr-aix.h | 35 | ||||
| -rw-r--r-- | libgcc/config/s390/gthr-tpf.h | 229 |
10 files changed, 3099 insertions, 2 deletions
diff --git a/libgcc/config/gthr-lynx.h b/libgcc/config/gthr-lynx.h new file mode 100644 index 00000000000..c98c2e6693e --- /dev/null +++ b/libgcc/config/gthr-lynx.h @@ -0,0 +1,61 @@ +/* Threads compatibility routines for libgcc2 and libobjc for + LynxOS. */ +/* Compile this one with gcc. */ +/* Copyright (C) 2004, 2008, 2009, 2011 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_LYNX_H +#define GCC_GTHR_LYNX_H + +#ifdef _MULTITHREADED + +/* Using the macro version of pthread_setspecific leads to a + compilation error. Instead we have two choices either kill all + macros in pthread.h with defining _POSIX_THREADS_CALLS or undefine + individual macros where we should fall back on the function + implementation. We choose the second approach. */ + +#include <pthread.h> +#undef pthread_setspecific + +/* When using static libc on LynxOS, we cannot define pthread_create + weak. If the multi-threaded application includes iostream.h, + gthr-posix.h is included and pthread_create will be defined weak. + If pthread_create is weak its defining module in libc is not + necessarily included in the link and the symbol is resolved to zero. + Therefore the first call to it will crash. + + Since -mthreads is a multilib switch on LynxOS we know that at this + point we are compiling for multi-threaded. Omitting the weak + definitions at this point should have no effect. */ + +#undef GTHREAD_USE_WEAK +#define GTHREAD_USE_WEAK 0 + +#include "config/gthr-posix.h" + +#else +#include "gthr-single.h" +#endif + +#endif /* GCC_GTHR_LYNX_H */ diff --git a/libgcc/config/gthr-posix.h b/libgcc/config/gthr-posix.h new file mode 100644 index 00000000000..46054f6a7c2 --- /dev/null +++ b/libgcc/config/gthr-posix.h @@ -0,0 +1,879 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ +/* Copyright (C) 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, + 2008, 2009, 2010, 2011 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_POSIX_H +#define GCC_GTHR_POSIX_H + +/* POSIX threads specific definitions. + Easy, since the interface is just one-to-one mapping. */ + +#define __GTHREADS 1 +#define __GTHREADS_CXX0X 1 + +/* Some implementations of <pthread.h> require this to be defined. */ +#if !defined(_REENTRANT) && defined(__osf__) +#define _REENTRANT 1 +#endif + +#include <pthread.h> + +#if ((defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)) \ + || !defined(_GTHREAD_USE_MUTEX_TIMEDLOCK)) +# include <unistd.h> +# if defined(_POSIX_TIMEOUTS) && _POSIX_TIMEOUTS >= 0 +# define _GTHREAD_USE_MUTEX_TIMEDLOCK 1 +# else +# define _GTHREAD_USE_MUTEX_TIMEDLOCK 0 +# endif +#endif + +typedef pthread_t __gthread_t; +typedef pthread_key_t __gthread_key_t; +typedef pthread_once_t __gthread_once_t; +typedef pthread_mutex_t __gthread_mutex_t; +typedef pthread_mutex_t __gthread_recursive_mutex_t; +typedef pthread_cond_t __gthread_cond_t; +typedef struct timespec __gthread_time_t; + +/* POSIX like conditional variables are supported. Please look at comments + in gthr.h for details. */ +#define __GTHREAD_HAS_COND 1 + +#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER +#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT +#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) +#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER +#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) +#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP +#else +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function +#endif +#define __GTHREAD_COND_INIT PTHREAD_COND_INITIALIZER +#define __GTHREAD_TIME_INIT {0,0} + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK +# ifndef __gthrw_pragma +# define __gthrw_pragma(pragma) +# endif +# define __gthrw2(name,name2,type) \ + static __typeof(type) name __attribute__ ((__weakref__(#name2))); \ + __gthrw_pragma(weak type) +# define __gthrw_(name) __gthrw_ ## name +#else +# define __gthrw2(name,name2,type) +# define __gthrw_(name) name +#endif + +/* Typically, __gthrw_foo is a weak reference to symbol foo. */ +#define __gthrw(name) __gthrw2(__gthrw_ ## name,name,name) + +/* On Tru64, /usr/include/pthread.h uses #pragma extern_prefix "__" to + map a subset of the POSIX pthread API to mangled versions of their + names. */ +#if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) +#define __gthrw3(name) __gthrw2(__gthrw_ ## name, __ ## name, name) +__gthrw3(pthread_once) +__gthrw3(pthread_getspecific) +__gthrw3(pthread_setspecific) + +__gthrw3(pthread_create) +__gthrw3(pthread_join) +__gthrw3(pthread_detach) +__gthrw3(pthread_equal) +__gthrw3(pthread_self) +__gthrw3(pthread_cancel) +__gthrw3(sched_yield) + +__gthrw3(pthread_mutex_lock) +__gthrw3(pthread_mutex_trylock) +#if _GTHREAD_USE_MUTEX_TIMEDLOCK +__gthrw3(pthread_mutex_timedlock) +#endif +__gthrw3(pthread_mutex_unlock) +__gthrw3(pthread_mutex_init) +__gthrw3(pthread_mutex_destroy) + +__gthrw3(pthread_cond_broadcast) +__gthrw3(pthread_cond_signal) +__gthrw3(pthread_cond_wait) +__gthrw3(pthread_cond_timedwait) +__gthrw3(pthread_cond_destroy) +#else +__gthrw(pthread_once) +__gthrw(pthread_getspecific) +__gthrw(pthread_setspecific) + +__gthrw(pthread_create) +__gthrw(pthread_join) +__gthrw(pthread_equal) +__gthrw(pthread_self) +__gthrw(pthread_detach) +#ifndef __BIONIC__ +__gthrw(pthread_cancel) +#endif +__gthrw(sched_yield) + +__gthrw(pthread_mutex_lock) +__gthrw(pthread_mutex_trylock) +#if _GTHREAD_USE_MUTEX_TIMEDLOCK +__gthrw(pthread_mutex_timedlock) +#endif +__gthrw(pthread_mutex_unlock) +__gthrw(pthread_mutex_init) +__gthrw(pthread_mutex_destroy) + +__gthrw(pthread_cond_broadcast) +__gthrw(pthread_cond_signal) +__gthrw(pthread_cond_wait) +__gthrw(pthread_cond_timedwait) +__gthrw(pthread_cond_destroy) +#endif + +__gthrw(pthread_key_create) +__gthrw(pthread_key_delete) +__gthrw(pthread_mutexattr_init) +__gthrw(pthread_mutexattr_settype) +__gthrw(pthread_mutexattr_destroy) + + +#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK) +/* Objective-C. */ +#if defined(__osf__) && defined(_PTHREAD_USE_MANGLED_NAMES_) +__gthrw3(pthread_cond_init) +__gthrw3(pthread_exit) +#else +__gthrw(pthread_cond_init) +__gthrw(pthread_exit) +#endif /* __osf__ && _PTHREAD_USE_MANGLED_NAMES_ */ +#ifdef _POSIX_PRIORITY_SCHEDULING +#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING +__gthrw(sched_get_priority_max) +__gthrw(sched_get_priority_min) +#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ +#endif /* _POSIX_PRIORITY_SCHEDULING */ +__gthrw(pthread_attr_destroy) +__gthrw(pthread_attr_init) +__gthrw(pthread_attr_setdetachstate) +#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING +__gthrw(pthread_getschedparam) +__gthrw(pthread_setschedparam) +#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ +#endif /* _LIBOBJC || _LIBOBJC_WEAK */ + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK + +/* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if + -pthreads is not specified. The functions are dummies and most return an + error value. However pthread_once returns 0 without invoking the routine + it is passed so we cannot pretend that the interface is active if -pthreads + is not specified. On Solaris 2.5.1, the interface is not exposed at all so + we need to play the usual game with weak symbols. On Solaris 10 and up, a + working interface is always exposed. On FreeBSD 6 and later, libc also + exposes a dummy POSIX threads interface, similar to what Solaris 2.6 up + to 9 does. FreeBSD >= 700014 even provides a pthread_cancel stub in libc, + which means the alternate __gthread_active_p below cannot be used there. */ + +#if defined(__FreeBSD__) || (defined(__sun) && defined(__svr4__)) + +static volatile int __gthread_active = -1; + +static void +__gthread_trigger (void) +{ + __gthread_active = 1; +} + +static inline int +__gthread_active_p (void) +{ + static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER; + static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT; + + /* Avoid reading __gthread_active twice on the main code path. */ + int __gthread_active_latest_value = __gthread_active; + + /* This test is not protected to avoid taking a lock on the main code + path so every update of __gthread_active in a threaded program must + be atomic with regard to the result of the test. */ + if (__builtin_expect (__gthread_active_latest_value < 0, 0)) + { + if (__gthrw_(pthread_once)) + { + /* If this really is a threaded program, then we must ensure that + __gthread_active has been set to 1 before exiting this block. */ + __gthrw_(pthread_mutex_lock) (&__gthread_active_mutex); + __gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger); + __gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex); + } + + /* Make sure we'll never enter this block again. */ + if (__gthread_active < 0) + __gthread_active = 0; + + __gthread_active_latest_value = __gthread_active; + } + + return __gthread_active_latest_value != 0; +} + +#else /* neither FreeBSD nor Solaris */ + +static inline int +__gthread_active_p (void) +{ +/* Android's C library does not provide pthread_cancel, check for + `pthread_create' instead. */ +#ifndef __BIONIC__ + static void *const __gthread_active_ptr + = __extension__ (void *) &__gthrw_(pthread_cancel); +#else + static void *const __gthread_active_ptr + = __extension__ (void *) &__gthrw_(pthread_create); +#endif + return __gthread_active_ptr != 0; +} + +#endif /* FreeBSD or Solaris */ + +#else /* not SUPPORTS_WEAK */ + +/* Similar to Solaris, HP-UX 11 for PA-RISC provides stubs for pthread + calls in shared flavors of the HP-UX C library. Most of the stubs + have no functionality. The details are described in the "libc cumulative + patch" for each subversion of HP-UX 11. There are two special interfaces + provided for checking whether an application is linked to a shared pthread + library or not. However, these interfaces aren't available in early + libpthread libraries. We also need a test that works for archive + libraries. We can't use pthread_once as some libc versions call the + init function. We also can't use pthread_create or pthread_attr_init + as these create a thread and thereby prevent changing the default stack + size. The function pthread_default_stacksize_np is available in both + the archive and shared versions of libpthread. It can be used to + determine the default pthread stack size. There is a stub in some + shared libc versions which returns a zero size if pthreads are not + active. We provide an equivalent stub to handle cases where libc + doesn't provide one. */ + +#if defined(__hppa__) && defined(__hpux__) + +static volatile int __gthread_active = -1; + +static inline int +__gthread_active_p (void) +{ + /* Avoid reading __gthread_active twice on the main code path. */ + int __gthread_active_latest_value = __gthread_active; + size_t __s; + + if (__builtin_expect (__gthread_active_latest_value < 0, 0)) + { + pthread_default_stacksize_np (0, &__s); + __gthread_active = __s ? 1 : 0; + __gthread_active_latest_value = __gthread_active; + } + + return __gthread_active_latest_value != 0; +} + +#else /* not hppa-hpux */ + +static inline int +__gthread_active_p (void) +{ + return 1; +} + +#endif /* hppa-hpux */ + +#endif /* SUPPORTS_WEAK */ + +#ifdef _LIBOBJC + +/* This is the config.h file in libobjc/ */ +#include <config.h> + +#ifdef HAVE_SCHED_H +# include <sched.h> +#endif + +/* Key structure for maintaining thread specific storage */ +static pthread_key_t _objc_thread_storage; +static pthread_attr_t _objc_thread_attribs; + +/* Thread local storage for a single thread */ +static void *thread_local_storage = NULL; + +/* Backend initialization functions */ + +/* Initialize the threads subsystem. */ +static inline int +__gthread_objc_init_thread_system (void) +{ + if (__gthread_active_p ()) + { + /* Initialize the thread storage key. */ + if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0) + { + /* The normal default detach state for threads is + * PTHREAD_CREATE_JOINABLE which causes threads to not die + * when you think they should. */ + if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0 + && __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs, + PTHREAD_CREATE_DETACHED) == 0) + return 0; + } + } + + return -1; +} + +/* Close the threads subsystem. */ +static inline int +__gthread_objc_close_thread_system (void) +{ + if (__gthread_active_p () + && __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0 + && __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0) + return 0; + + return -1; +} + +/* Backend thread functions */ + +/* Create a new thread of execution. */ +static inline objc_thread_t +__gthread_objc_thread_detach (void (*func)(void *), void *arg) +{ + objc_thread_t thread_id; + pthread_t new_thread_handle; + + if (!__gthread_active_p ()) + return NULL; + + if (!(__gthrw_(pthread_create) (&new_thread_handle, &_objc_thread_attribs, + (void *) func, arg))) + thread_id = (objc_thread_t) new_thread_handle; + else + thread_id = NULL; + + return thread_id; +} + +/* Set the current thread's priority. */ +static inline int +__gthread_objc_thread_set_priority (int priority) +{ + if (!__gthread_active_p ()) + return -1; + else + { +#ifdef _POSIX_PRIORITY_SCHEDULING +#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING + pthread_t thread_id = __gthrw_(pthread_self) (); + int policy; + struct sched_param params; + int priority_min, priority_max; + + if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0) + { + if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1) + return -1; + + if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1) + return -1; + + if (priority > priority_max) + priority = priority_max; + else if (priority < priority_min) + priority = priority_min; + params.sched_priority = priority; + + /* + * The solaris 7 and several other man pages incorrectly state that + * this should be a pointer to policy but pthread.h is universally + * at odds with this. + */ + if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0) + return 0; + } +#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ +#endif /* _POSIX_PRIORITY_SCHEDULING */ + return -1; + } +} + +/* Return the current thread's priority. */ +static inline int +__gthread_objc_thread_get_priority (void) +{ +#ifdef _POSIX_PRIORITY_SCHEDULING +#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING + if (__gthread_active_p ()) + { + int policy; + struct sched_param params; + + if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0) + return params.sched_priority; + else + return -1; + } + else +#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */ +#endif /* _POSIX_PRIORITY_SCHEDULING */ + return OBJC_THREAD_INTERACTIVE_PRIORITY; +} + +/* Yield our process time to another thread. */ +static inline void +__gthread_objc_thread_yield (void) +{ + if (__gthread_active_p ()) + __gthrw_(sched_yield) (); +} + +/* Terminate the current thread. */ +static inline int +__gthread_objc_thread_exit (void) +{ + if (__gthread_active_p ()) + /* exit the thread */ + __gthrw_(pthread_exit) (&__objc_thread_exit_status); + + /* Failed if we reached here */ + return -1; +} + +/* Returns an integer value which uniquely describes a thread. */ +static inline objc_thread_t +__gthread_objc_thread_id (void) +{ + if (__gthread_active_p ()) + return (objc_thread_t) __gthrw_(pthread_self) (); + else + return (objc_thread_t) 1; +} + +/* Sets the thread's local storage pointer. */ +static inline int +__gthread_objc_thread_set_data (void *value) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); + else + { + thread_local_storage = value; + return 0; + } +} + +/* Returns the thread's local storage pointer. */ +static inline void * +__gthread_objc_thread_get_data (void) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_getspecific) (_objc_thread_storage); + else + return thread_local_storage; +} + +/* Backend mutex functions */ + +/* Allocate a mutex. */ +static inline int +__gthread_objc_mutex_allocate (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + { + mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); + + if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL)) + { + objc_free (mutex->backend); + mutex->backend = NULL; + return -1; + } + } + + return 0; +} + +/* Deallocate a mutex. */ +static inline int +__gthread_objc_mutex_deallocate (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + { + int count; + + /* + * Posix Threads specifically require that the thread be unlocked + * for __gthrw_(pthread_mutex_destroy) to work. + */ + + do + { + count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); + if (count < 0) + return -1; + } + while (count); + + if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) + return -1; + + objc_free (mutex->backend); + mutex->backend = NULL; + } + return 0; +} + +/* Grab a lock on a mutex. */ +static inline int +__gthread_objc_mutex_lock (objc_mutex_t mutex) +{ + if (__gthread_active_p () + && __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0) + { + return -1; + } + + return 0; +} + +/* Try to grab a lock on a mutex. */ +static inline int +__gthread_objc_mutex_trylock (objc_mutex_t mutex) +{ + if (__gthread_active_p () + && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0) + { + return -1; + } + + return 0; +} + +/* Unlock the mutex */ +static inline int +__gthread_objc_mutex_unlock (objc_mutex_t mutex) +{ + if (__gthread_active_p () + && __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0) + { + return -1; + } + + return 0; +} + +/* Backend condition mutex functions */ + +/* Allocate a condition. */ +static inline int +__gthread_objc_condition_allocate (objc_condition_t condition) +{ + if (__gthread_active_p ()) + { + condition->backend = objc_malloc (sizeof (pthread_cond_t)); + + if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL)) + { + objc_free (condition->backend); + condition->backend = NULL; + return -1; + } + } + + return 0; +} + +/* Deallocate a condition. */ +static inline int +__gthread_objc_condition_deallocate (objc_condition_t condition) +{ + if (__gthread_active_p ()) + { + if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend)) + return -1; + + objc_free (condition->backend); + condition->backend = NULL; + } + return 0; +} + +/* Wait on the condition */ +static inline int +__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend, + (pthread_mutex_t *) mutex->backend); + else + return 0; +} + +/* Wake up all threads waiting on this condition. */ +static inline int +__gthread_objc_condition_broadcast (objc_condition_t condition) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend); + else + return 0; +} + +/* Wake up one thread waiting on this condition. */ +static inline int +__gthread_objc_condition_signal (objc_condition_t condition) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend); + else + return 0; +} + +#else /* _LIBOBJC */ + +static inline int +__gthread_create (__gthread_t *__threadid, void *(*__func) (void*), + void *__args) +{ + return __gthrw_(pthread_create) (__threadid, NULL, __func, __args); +} + +static inline int +__gthread_join (__gthread_t __threadid, void **__value_ptr) +{ + return __gthrw_(pthread_join) (__threadid, __value_ptr); +} + +static inline int +__gthread_detach (__gthread_t __threadid) +{ + return __gthrw_(pthread_detach) (__threadid); +} + +static inline int +__gthread_equal (__gthread_t __t1, __gthread_t __t2) +{ + return __gthrw_(pthread_equal) (__t1, __t2); +} + +static inline __gthread_t +__gthread_self (void) +{ + return __gthrw_(pthread_self) (); +} + +static inline int +__gthread_yield (void) +{ + return __gthrw_(sched_yield) (); +} + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_once) (__once, __func); + else + return -1; +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthrw_(pthread_key_create) (__key, __dtor); +} + +static inline int +__gthread_key_delete (__gthread_key_t __key) +{ + return __gthrw_(pthread_key_delete) (__key); +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + return __gthrw_(pthread_getspecific) (__key); +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthrw_(pthread_setspecific) (__key, __ptr); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_destroy) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_lock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_trylock) (__mutex); + else + return 0; +} + +#if _GTHREAD_USE_MUTEX_TIMEDLOCK +static inline int +__gthread_mutex_timedlock (__gthread_mutex_t *__mutex, + const __gthread_time_t *__abs_timeout) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_timedlock) (__mutex, __abs_timeout); + else + return 0; +} +#endif + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_unlock) (__mutex); + else + return 0; +} + +#ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP +static inline int +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + pthread_mutexattr_t __attr; + int __r; + + __r = __gthrw_(pthread_mutexattr_init) (&__attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_settype) (&__attr, + PTHREAD_MUTEX_RECURSIVE); + if (!__r) + __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); + return __r; + } + return 0; +} +#endif + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_lock (__mutex); +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_trylock (__mutex); +} + +#if _GTHREAD_USE_MUTEX_TIMEDLOCK +static inline int +__gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *__mutex, + const __gthread_time_t *__abs_timeout) +{ + return __gthread_mutex_timedlock (__mutex, __abs_timeout); +} +#endif + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_unlock (__mutex); +} + +static inline int +__gthread_cond_broadcast (__gthread_cond_t *__cond) +{ + return __gthrw_(pthread_cond_broadcast) (__cond); +} + +static inline int +__gthread_cond_signal (__gthread_cond_t *__cond) +{ + return __gthrw_(pthread_cond_signal) (__cond); +} + +static inline int +__gthread_cond_wait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex) +{ + return __gthrw_(pthread_cond_wait) (__cond, __mutex); +} + +static inline int +__gthread_cond_timedwait (__gthread_cond_t *__cond, __gthread_mutex_t *__mutex, + const __gthread_time_t *__abs_timeout) +{ + return __gthrw_(pthread_cond_timedwait) (__cond, __mutex, __abs_timeout); +} + +static inline int +__gthread_cond_wait_recursive (__gthread_cond_t *__cond, + __gthread_recursive_mutex_t *__mutex) +{ + return __gthread_cond_wait (__cond, __mutex); +} + +static inline int +__gthread_cond_timedwait_recursive (__gthread_cond_t *__cond, + __gthread_recursive_mutex_t *__mutex, + const __gthread_time_t *__abs_timeout) +{ + return __gthread_cond_timedwait (__cond, __mutex, __abs_timeout); +} + +static inline int +__gthread_cond_destroy (__gthread_cond_t* __cond) +{ + return __gthrw_(pthread_cond_destroy) (__cond); +} + +#endif /* _LIBOBJC */ + +#endif /* ! GCC_GTHR_POSIX_H */ diff --git a/libgcc/config/gthr-rtems.h b/libgcc/config/gthr-rtems.h new file mode 100644 index 00000000000..c5bd52292cf --- /dev/null +++ b/libgcc/config/gthr-rtems.h @@ -0,0 +1,157 @@ +/* RTEMS threads compatibility routines for libgcc2 and libobjc. + by: Rosimildo da Silva( rdasilva@connecttel.com ) */ +/* Compile this one with gcc. */ +/* Copyright (C) 1997, 1999, 2000, 2002, 2003, 2005, 2008, 2009 + Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_RTEMS_H +#define GCC_GTHR_RTEMS_H + +#ifdef __cplusplus +extern "C" { +#endif + +#define __GTHREADS 1 + +#define __GTHREAD_ONCE_INIT 0 +#define __GTHREAD_MUTEX_INIT_FUNCTION rtems_gxx_mutex_init +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION rtems_gxx_recursive_mutex_init + +/* Avoid dependency on rtems specific headers. */ +typedef void *__gthread_key_t; +typedef int __gthread_once_t; +typedef void *__gthread_mutex_t; +typedef void *__gthread_recursive_mutex_t; + +/* + * External functions provided by RTEMS. They are very similar to their POSIX + * counterparts. A "Wrapper API" is being use to avoid dependency on any RTEMS + * header files. + */ + +/* generic per task variables */ +extern int rtems_gxx_once (__gthread_once_t *__once, void (*__func) (void)); +extern int rtems_gxx_key_create (__gthread_key_t *__key, void (*__dtor) (void *)); +extern int rtems_gxx_key_delete (__gthread_key_t __key); +extern void *rtems_gxx_getspecific (__gthread_key_t __key); +extern int rtems_gxx_setspecific (__gthread_key_t __key, const void *__ptr); + +/* mutex support */ +extern void rtems_gxx_mutex_init (__gthread_mutex_t *__mutex); +extern int rtems_gxx_mutex_destroy (__gthread_mutex_t *__mutex); +extern int rtems_gxx_mutex_lock (__gthread_mutex_t *__mutex); +extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *__mutex); +extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *__mutex); + +/* recursive mutex support */ +extern void rtems_gxx_recursive_mutex_init (__gthread_recursive_mutex_t *__mutex); +extern int rtems_gxx_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex); +extern int rtems_gxx_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex); +extern int rtems_gxx_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex); + +/* RTEMS threading is always active */ +static inline int +__gthread_active_p (void) +{ + return 1; +} + +/* Wrapper calls */ +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + return rtems_gxx_once( __once, __func ); +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return rtems_gxx_key_create( __key, __dtor ); +} + +static inline int +__gthread_key_delete (__gthread_key_t __key) +{ + return rtems_gxx_key_delete (__key); +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + return rtems_gxx_getspecific (__key); +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return rtems_gxx_setspecific (__key, __ptr); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + return rtems_gxx_mutex_destroy (__mutex); +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + return rtems_gxx_mutex_lock (__mutex); +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + return rtems_gxx_mutex_trylock (__mutex); +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + return rtems_gxx_mutex_unlock( __mutex ); +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + return rtems_gxx_recursive_mutex_lock (__mutex); +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + return rtems_gxx_recursive_mutex_trylock (__mutex); +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + return rtems_gxx_recursive_mutex_unlock( __mutex ); +} + +#ifdef __cplusplus +} +#endif + +#endif /* ! GCC_GTHR_RTEMS_H */ diff --git a/libgcc/config/gthr-vxworks.h b/libgcc/config/gthr-vxworks.h new file mode 100644 index 00000000000..2346b528660 --- /dev/null +++ b/libgcc/config/gthr-vxworks.h @@ -0,0 +1,170 @@ +/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */ +/* Compile this one with gcc. */ +/* Copyright (C) 1997, 1999, 2000, 2008, 2009, 2011 + Free Software Foundation, Inc. + Contributed by Mike Stump <mrs@wrs.com>. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_VXWORKS_H +#define GCC_GTHR_VXWORKS_H + +#ifdef _LIBOBJC + +/* libobjc requires the optional pthreads component. */ +#include "config/gthr-posix.h" + +#else +#ifdef __cplusplus +#define UNUSED(x) +#else +#define UNUSED(x) x __attribute__((unused)) +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#define __GTHREADS 1 +#define __gthread_active_p() 1 + +/* Mutexes are easy, except that they need to be initialized at runtime. */ + +#include <semLib.h> + +typedef SEM_ID __gthread_mutex_t; +/* All VxWorks mutexes are recursive. */ +typedef SEM_ID __gthread_recursive_mutex_t; +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function + +static inline void +__gthread_mutex_init_function (__gthread_mutex_t *mutex) +{ + *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex)) +{ + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *mutex) +{ + return semTake (*mutex, WAIT_FOREVER); +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *mutex) +{ + return semTake (*mutex, NO_WAIT); +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *mutex) +{ + return semGive (*mutex); +} + +static inline void +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex) +{ + __gthread_mutex_init_function (mutex); +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex) +{ + return __gthread_mutex_lock (mutex); +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex) +{ + return __gthread_mutex_trylock (mutex); +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex) +{ + return __gthread_mutex_unlock (mutex); +} + +/* pthread_once is complicated enough that it's implemented + out-of-line. See config/vxlib.c. */ + +typedef struct +{ +#if !defined(__RTP__) +#if defined(__PPC__) + __attribute ((aligned (__alignof (unsigned)))) +#endif + volatile unsigned char busy; +#endif + volatile unsigned char done; +#if !defined(__RTP__) && defined(__PPC__) + /* PPC's test-and-set implementation requires a 4 byte aligned + object, of which it only sets the first byte. We use padding + here, in order to maintain some amount of backwards + compatibility. Without this padding, gthread_once objects worked + by accident because they happen to be static objects and the ppc + port automatically increased their alignment to 4 bytes. */ + unsigned char pad1; + unsigned char pad2; +#endif +} +__gthread_once_t; + +#if defined (__RTP__) +# define __GTHREAD_ONCE_INIT { 0 } +#elif defined (__PPC__) +# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 } +#else +# define __GTHREAD_ONCE_INIT { 0, 0 } +#endif + +extern int __gthread_once (__gthread_once_t *__once, void (*__func)(void)); + +/* Thread-specific data requires a great deal of effort, since VxWorks + is not really set up for it. See config/vxlib.c for the gory + details. All the TSD routines are sufficiently complex that they + need to be implemented out of line. */ + +typedef unsigned int __gthread_key_t; + +extern int __gthread_key_create (__gthread_key_t *__keyp, void (*__dtor)(void *)); +extern int __gthread_key_delete (__gthread_key_t __key); + +extern void *__gthread_getspecific (__gthread_key_t __key); +extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr); + +#undef UNUSED + +#ifdef __cplusplus +} +#endif + +#endif /* not _LIBOBJC */ + +#endif /* gthr-vxworks.h */ diff --git a/libgcc/config/i386/gthr-win32.c b/libgcc/config/i386/gthr-win32.c index 46ecb0d4b26..ab1b69fd4cf 100644 --- a/libgcc/config/i386/gthr-win32.c +++ b/libgcc/config/i386/gthr-win32.c @@ -1,7 +1,8 @@ /* Implementation of W32-specific threads compatibility routines for libgcc2. */ -/* Copyright (C) 1999, 2000, 2002, 2004, 2008, 2009 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2000, 2002, 2004, 2008, 2009, 2011 + Free Software Foundation, Inc. Contributed by Mumit Khan <khan@xraylith.wisc.edu>. Modified and moved to separate file by Danny Smith <dannysmith@users.sourceforge.net>. @@ -33,7 +34,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #endif #undef __GTHREAD_I486_INLINE_LOCK_PRIMITIVES #define __GTHREAD_I486_INLINE_LOCK_PRIMITIVES -#include <gthr-win32.h> +#include "gthr-win32.h" /* Windows32 threads specific definitions. The windows32 threading model does not map well into pthread-inspired gcc's threading model, and so diff --git a/libgcc/config/i386/gthr-win32.h b/libgcc/config/i386/gthr-win32.h new file mode 100644 index 00000000000..53f8396cc81 --- /dev/null +++ b/libgcc/config/i386/gthr-win32.h @@ -0,0 +1,772 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ + +/* Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2008, 2009 + Free Software Foundation, Inc. + Contributed by Mumit Khan <khan@xraylith.wisc.edu>. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_WIN32_H +#define GCC_GTHR_WIN32_H + +/* Make sure CONST_CAST2 (origin in system.h) is declared. */ +#ifndef CONST_CAST2 +#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) +#endif + +/* Windows32 threads specific definitions. The windows32 threading model + does not map well into pthread-inspired gcc's threading model, and so + there are caveats one needs to be aware of. + + 1. The destructor supplied to __gthread_key_create is ignored for + generic x86-win32 ports. This will certainly cause memory leaks + due to unreclaimed eh contexts (sizeof (eh_context) is at least + 24 bytes for x86 currently). + + This memory leak may be significant for long-running applications + that make heavy use of C++ EH. + + However, Mingw runtime (version 0.3 or newer) provides a mechanism + to emulate pthreads key dtors; the runtime provides a special DLL, + linked in if -mthreads option is specified, that runs the dtors in + the reverse order of registration when each thread exits. If + -mthreads option is not given, a stub is linked in instead of the + DLL, which results in memory leak. Other x86-win32 ports can use + the same technique of course to avoid the leak. + + 2. The error codes returned are non-POSIX like, and cast into ints. + This may cause incorrect error return due to truncation values on + hw where sizeof (DWORD) > sizeof (int). + + 3. We are currently using a special mutex instead of the Critical + Sections, since Win9x does not support TryEnterCriticalSection + (while NT does). + + The basic framework should work well enough. In the long term, GCC + needs to use Structured Exception Handling on Windows32. */ + +#define __GTHREADS 1 + +#include <errno.h> +#ifdef __MINGW32__ +#include <_mingw.h> +#endif + +#ifndef __UNUSED_PARAM +#define __UNUSED_PARAM(x) x +#endif + +#ifdef _LIBOBJC + +/* This is necessary to prevent windef.h (included from windows.h) from + defining its own BOOL as a typedef. */ +#ifndef __OBJC__ +#define __OBJC__ +#endif +#include <windows.h> +/* Now undef the windows BOOL. */ +#undef BOOL + +/* Key structure for maintaining thread specific storage */ +static DWORD __gthread_objc_data_tls = (DWORD) -1; + +/* Backend initialization functions */ + +/* Initialize the threads subsystem. */ +int +__gthread_objc_init_thread_system (void) +{ + /* Initialize the thread storage key. */ + if ((__gthread_objc_data_tls = TlsAlloc ()) != (DWORD) -1) + return 0; + else + return -1; +} + +/* Close the threads subsystem. */ +int +__gthread_objc_close_thread_system (void) +{ + if (__gthread_objc_data_tls != (DWORD) -1) + TlsFree (__gthread_objc_data_tls); + return 0; +} + +/* Backend thread functions */ + +/* Create a new thread of execution. */ +objc_thread_t +__gthread_objc_thread_detach (void (*func)(void *arg), void *arg) +{ + DWORD thread_id = 0; + HANDLE win32_handle; + + if (!(win32_handle = CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) func, + arg, 0, &thread_id))) + thread_id = 0; + + return (objc_thread_t) (INT_PTR) thread_id; +} + +/* Set the current thread's priority. */ +int +__gthread_objc_thread_set_priority (int priority) +{ + int sys_priority = 0; + + switch (priority) + { + case OBJC_THREAD_INTERACTIVE_PRIORITY: + sys_priority = THREAD_PRIORITY_NORMAL; + break; + default: + case OBJC_THREAD_BACKGROUND_PRIORITY: + sys_priority = THREAD_PRIORITY_BELOW_NORMAL; + break; + case OBJC_THREAD_LOW_PRIORITY: + sys_priority = THREAD_PRIORITY_LOWEST; + break; + } + + /* Change priority */ + if (SetThreadPriority (GetCurrentThread (), sys_priority)) + return 0; + else + return -1; +} + +/* Return the current thread's priority. */ +int +__gthread_objc_thread_get_priority (void) +{ + int sys_priority; + + sys_priority = GetThreadPriority (GetCurrentThread ()); + + switch (sys_priority) + { + case THREAD_PRIORITY_HIGHEST: + case THREAD_PRIORITY_TIME_CRITICAL: + case THREAD_PRIORITY_ABOVE_NORMAL: + case THREAD_PRIORITY_NORMAL: + return OBJC_THREAD_INTERACTIVE_PRIORITY; + + default: + case THREAD_PRIORITY_BELOW_NORMAL: + return OBJC_THREAD_BACKGROUND_PRIORITY; + + case THREAD_PRIORITY_IDLE: + case THREAD_PRIORITY_LOWEST: + return OBJC_THREAD_LOW_PRIORITY; + } + + /* Couldn't get priority. */ + return -1; +} + +/* Yield our process time to another thread. */ +void +__gthread_objc_thread_yield (void) +{ + Sleep (0); +} + +/* Terminate the current thread. */ +int +__gthread_objc_thread_exit (void) +{ + /* exit the thread */ + ExitThread (__objc_thread_exit_status); + + /* Failed if we reached here */ + return -1; +} + +/* Returns an integer value which uniquely describes a thread. */ +objc_thread_t +__gthread_objc_thread_id (void) +{ + return (objc_thread_t) (INT_PTR) GetCurrentThreadId (); +} + +/* Sets the thread's local storage pointer. */ +int +__gthread_objc_thread_set_data (void *value) +{ + if (TlsSetValue (__gthread_objc_data_tls, value)) + return 0; + else + return -1; +} + +/* Returns the thread's local storage pointer. */ +void * +__gthread_objc_thread_get_data (void) +{ + DWORD lasterror; + void *ptr; + + lasterror = GetLastError (); + + ptr = TlsGetValue (__gthread_objc_data_tls); /* Return thread data. */ + + SetLastError (lasterror); + + return ptr; +} + +/* Backend mutex functions */ + +/* Allocate a mutex. */ +int +__gthread_objc_mutex_allocate (objc_mutex_t mutex) +{ + if ((mutex->backend = (void *) CreateMutex (NULL, 0, NULL)) == NULL) + return -1; + else + return 0; +} + +/* Deallocate a mutex. */ +int +__gthread_objc_mutex_deallocate (objc_mutex_t mutex) +{ + CloseHandle ((HANDLE) (mutex->backend)); + return 0; +} + +/* Grab a lock on a mutex. */ +int +__gthread_objc_mutex_lock (objc_mutex_t mutex) +{ + int status; + + status = WaitForSingleObject ((HANDLE) (mutex->backend), INFINITE); + if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED) + return -1; + else + return 0; +} + +/* Try to grab a lock on a mutex. */ +int +__gthread_objc_mutex_trylock (objc_mutex_t mutex) +{ + int status; + + status = WaitForSingleObject ((HANDLE) (mutex->backend), 0); + if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED) + return -1; + else + return 0; +} + +/* Unlock the mutex */ +int +__gthread_objc_mutex_unlock (objc_mutex_t mutex) +{ + if (ReleaseMutex ((HANDLE) (mutex->backend)) == 0) + return -1; + else + return 0; +} + +/* Backend condition mutex functions */ + +/* Allocate a condition. */ +int +__gthread_objc_condition_allocate (objc_condition_t __UNUSED_PARAM(condition)) +{ + /* Unimplemented. */ + return -1; +} + +/* Deallocate a condition. */ +int +__gthread_objc_condition_deallocate (objc_condition_t __UNUSED_PARAM(condition)) +{ + /* Unimplemented. */ + return -1; +} + +/* Wait on the condition */ +int +__gthread_objc_condition_wait (objc_condition_t __UNUSED_PARAM(condition), + objc_mutex_t __UNUSED_PARAM(mutex)) +{ + /* Unimplemented. */ + return -1; +} + +/* Wake up all threads waiting on this condition. */ +int +__gthread_objc_condition_broadcast (objc_condition_t __UNUSED_PARAM(condition)) +{ + /* Unimplemented. */ + return -1; +} + +/* Wake up one thread waiting on this condition. */ +int +__gthread_objc_condition_signal (objc_condition_t __UNUSED_PARAM(condition)) +{ + /* Unimplemented. */ + return -1; +} + +#else /* _LIBOBJC */ + +#ifdef __cplusplus +extern "C" { +#endif + +typedef unsigned long __gthread_key_t; + +typedef struct { + int done; + long started; +} __gthread_once_t; + +typedef struct { + long counter; + void *sema; +} __gthread_mutex_t; + +typedef struct { + long counter; + long depth; + unsigned long owner; + void *sema; +} __gthread_recursive_mutex_t; + +#define __GTHREAD_ONCE_INIT {0, -1} +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function +#define __GTHREAD_MUTEX_INIT_DEFAULT {-1, 0} +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION \ + __gthread_recursive_mutex_init_function +#define __GTHREAD_RECURSIVE_MUTEX_INIT_DEFAULT {-1, 0, 0, 0} + +#if defined (_WIN32) && !defined(__CYGWIN__) +#define MINGW32_SUPPORTS_MT_EH 1 +/* Mingw runtime >= v0.3 provides a magic variable that is set to nonzero + if -mthreads option was specified, or 0 otherwise. This is to get around + the lack of weak symbols in PE-COFF. */ +extern int _CRT_MT; +extern int __mingwthr_key_dtor (unsigned long, void (*) (void *)); +#endif /* _WIN32 && !__CYGWIN__ */ + +/* The Windows95 kernel does not export InterlockedCompareExchange. + This provides a substitute. When building apps that reference + gthread_mutex_try_lock, the __GTHREAD_I486_INLINE_LOCK_PRIMITIVES + macro must be defined if Windows95 is a target. Currently + gthread_mutex_try_lock is not referenced by libgcc or libstdc++. */ +#ifdef __GTHREAD_I486_INLINE_LOCK_PRIMITIVES +static inline long +__gthr_i486_lock_cmp_xchg(long *__dest, long __xchg, long __comperand) +{ + long result; + __asm__ __volatile__ ("\n\ + lock\n\ + cmpxchg{l} {%4, %1|%1, %4}\n" + : "=a" (result), "=m" (*__dest) + : "0" (__comperand), "m" (*__dest), "r" (__xchg) + : "cc"); + return result; +} +#define __GTHR_W32_InterlockedCompareExchange __gthr_i486_lock_cmp_xchg +#else /* __GTHREAD_I486_INLINE_LOCK_PRIMITIVES */ +#define __GTHR_W32_InterlockedCompareExchange InterlockedCompareExchange +#endif /* __GTHREAD_I486_INLINE_LOCK_PRIMITIVES */ + +static inline int +__gthread_active_p (void) +{ +#ifdef MINGW32_SUPPORTS_MT_EH + return _CRT_MT; +#else + return 1; +#endif +} + +#if __GTHREAD_HIDE_WIN32API + +/* The implementations are in config/i386/gthr-win32.c in libgcc.a. + Only stubs are exposed to avoid polluting the C++ namespace with + windows api definitions. */ + +extern int __gthr_win32_once (__gthread_once_t *, void (*) (void)); +extern int __gthr_win32_key_create (__gthread_key_t *, void (*) (void*)); +extern int __gthr_win32_key_delete (__gthread_key_t); +extern void * __gthr_win32_getspecific (__gthread_key_t); +extern int __gthr_win32_setspecific (__gthread_key_t, const void *); +extern void __gthr_win32_mutex_init_function (__gthread_mutex_t *); +extern int __gthr_win32_mutex_lock (__gthread_mutex_t *); +extern int __gthr_win32_mutex_trylock (__gthread_mutex_t *); +extern int __gthr_win32_mutex_unlock (__gthread_mutex_t *); +extern void + __gthr_win32_recursive_mutex_init_function (__gthread_recursive_mutex_t *); +extern int __gthr_win32_recursive_mutex_lock (__gthread_recursive_mutex_t *); +extern int + __gthr_win32_recursive_mutex_trylock (__gthread_recursive_mutex_t *); +extern int __gthr_win32_recursive_mutex_unlock (__gthread_recursive_mutex_t *); +extern void __gthr_win32_mutex_destroy (__gthread_mutex_t *); + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthr_win32_once (__once, __func); + else + return -1; +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthr_win32_key_create (__key, __dtor); +} + +static inline int +__gthread_key_delete (__gthread_key_t __key) +{ + return __gthr_win32_key_delete (__key); +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + return __gthr_win32_getspecific (__key); +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthr_win32_setspecific (__key, __ptr); +} + +static inline void +__gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + __gthr_win32_mutex_init_function (__mutex); +} + +static inline void +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + __gthr_win32_mutex_destroy (__mutex); +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_win32_mutex_lock (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_win32_mutex_trylock (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_win32_mutex_unlock (__mutex); + else + return 0; +} + +static inline void +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + __gthr_win32_recursive_mutex_init_function (__mutex); +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_win32_recursive_mutex_lock (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_win32_recursive_mutex_trylock (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_win32_recursive_mutex_unlock (__mutex); + else + return 0; +} + +#else /* ! __GTHREAD_HIDE_WIN32API */ + +#include <windows.h> +#include <errno.h> + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (! __gthread_active_p ()) + return -1; + else if (__once == NULL || __func == NULL) + return EINVAL; + + if (! __once->done) + { + if (InterlockedIncrement (&(__once->started)) == 0) + { + (*__func) (); + __once->done = TRUE; + } + else + { + /* Another thread is currently executing the code, so wait for it + to finish; yield the CPU in the meantime. If performance + does become an issue, the solution is to use an Event that + we wait on here (and set above), but that implies a place to + create the event before this routine is called. */ + while (! __once->done) + Sleep (0); + } + } + + return 0; +} + +/* Windows32 thread local keys don't support destructors; this leads to + leaks, especially in threaded applications making extensive use of + C++ EH. Mingw uses a thread-support DLL to work-around this problem. */ +static inline int +__gthread_key_create (__gthread_key_t *__key, + void (*__dtor) (void *) __attribute__((unused))) +{ + int __status = 0; + DWORD __tls_index = TlsAlloc (); + if (__tls_index != 0xFFFFFFFF) + { + *__key = __tls_index; +#ifdef MINGW32_SUPPORTS_MT_EH + /* Mingw runtime will run the dtors in reverse order for each thread + when the thread exits. */ + __status = __mingwthr_key_dtor (*__key, __dtor); +#endif + } + else + __status = (int) GetLastError (); + return __status; +} + +static inline int +__gthread_key_delete (__gthread_key_t __key) +{ + return (TlsFree (__key) != 0) ? 0 : (int) GetLastError (); +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + DWORD __lasterror; + void *__ptr; + + __lasterror = GetLastError (); + + __ptr = TlsGetValue (__key); + + SetLastError (__lasterror); + + return __ptr; +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + if (TlsSetValue (__key, CONST_CAST2(void *, const void *, __ptr)) != 0) + return 0; + else + return GetLastError (); +} + +static inline void +__gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + __mutex->counter = -1; + __mutex->sema = CreateSemaphore (NULL, 0, 65535, NULL); +} + +static inline void +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + CloseHandle ((HANDLE) __mutex->sema); +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + int __status = 0; + + if (__gthread_active_p ()) + { + if (InterlockedIncrement (&__mutex->counter) == 0 || + WaitForSingleObject (__mutex->sema, INFINITE) == WAIT_OBJECT_0) + __status = 0; + else + { + /* WaitForSingleObject returns WAIT_FAILED, and we can only do + some best-effort cleanup here. */ + InterlockedDecrement (&__mutex->counter); + __status = 1; + } + } + return __status; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + int __status = 0; + + if (__gthread_active_p ()) + { + if (__GTHR_W32_InterlockedCompareExchange (&__mutex->counter, 0, -1) < 0) + __status = 0; + else + __status = 1; + } + return __status; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + if (InterlockedDecrement (&__mutex->counter) >= 0) + return ReleaseSemaphore (__mutex->sema, 1, NULL) ? 0 : 1; + } + return 0; +} + +static inline void +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + __mutex->counter = -1; + __mutex->depth = 0; + __mutex->owner = 0; + __mutex->sema = CreateSemaphore (NULL, 0, 65535, NULL); +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + DWORD __me = GetCurrentThreadId(); + if (InterlockedIncrement (&__mutex->counter) == 0) + { + __mutex->depth = 1; + __mutex->owner = __me; + } + else if (__mutex->owner == __me) + { + InterlockedDecrement (&__mutex->counter); + ++(__mutex->depth); + } + else if (WaitForSingleObject (__mutex->sema, INFINITE) == WAIT_OBJECT_0) + { + __mutex->depth = 1; + __mutex->owner = __me; + } + else + { + /* WaitForSingleObject returns WAIT_FAILED, and we can only do + some best-effort cleanup here. */ + InterlockedDecrement (&__mutex->counter); + return 1; + } + } + return 0; +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + DWORD __me = GetCurrentThreadId(); + if (__GTHR_W32_InterlockedCompareExchange (&__mutex->counter, 0, -1) < 0) + { + __mutex->depth = 1; + __mutex->owner = __me; + } + else if (__mutex->owner == __me) + ++(__mutex->depth); + else + return 1; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + --(__mutex->depth); + if (__mutex->depth == 0) + { + __mutex->owner = 0; + + if (InterlockedDecrement (&__mutex->counter) >= 0) + return ReleaseSemaphore (__mutex->sema, 1, NULL) ? 0 : 1; + } + } + return 0; +} + +#endif /* __GTHREAD_HIDE_WIN32API */ + +#ifdef __cplusplus +} +#endif + +#endif /* _LIBOBJC */ + +#endif /* ! GCC_GTHR_WIN32_H */ diff --git a/libgcc/config/mips/gthr-mipssde.h b/libgcc/config/mips/gthr-mipssde.h new file mode 100644 index 00000000000..34f9b6cf54b --- /dev/null +++ b/libgcc/config/mips/gthr-mipssde.h @@ -0,0 +1,230 @@ +/* MIPS SDE threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ +/* Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc. + Contributed by Nigel Stephens <nigel@mips.com> + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_MIPSSDE_H +#define GCC_GTHR_MIPSSDE_H + +/* MIPS SDE threading API specific definitions. + Easy, since the interface is pretty much one-to-one. */ + +#define __GTHREADS 1 + +#include <sdethread.h> +#include <unistd.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef __sdethread_key_t __gthread_key_t; +typedef __sdethread_once_t __gthread_once_t; +typedef __sdethread_mutex_t __gthread_mutex_t; + +typedef struct { + long depth; + __sdethread_t owner; + __sdethread_mutex_t actual; +} __gthread_recursive_mutex_t; + +#define __GTHREAD_MUTEX_INIT __SDETHREAD_MUTEX_INITIALIZER("gthr") +#define __GTHREAD_ONCE_INIT __SDETHREAD_ONCE_INIT +static inline int +__gthread_recursive_mutex_init_function(__gthread_recursive_mutex_t *__mutex); +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK +# define __gthrw(name) \ + static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); +# define __gthrw_(name) __gthrw_ ## name +#else +# define __gthrw(name) +# define __gthrw_(name) name +#endif + +__gthrw(__sdethread_once) +__gthrw(__sdethread_key_create) +__gthrw(__sdethread_key_delete) +__gthrw(__sdethread_getspecific) +__gthrw(__sdethread_setspecific) + +__gthrw(__sdethread_self) + +__gthrw(__sdethread_mutex_lock) +__gthrw(__sdethread_mutex_trylock) +__gthrw(__sdethread_mutex_unlock) + +__gthrw(__sdethread_mutex_init) + +__gthrw(__sdethread_threading) + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK + +static inline int +__gthread_active_p (void) +{ + return !!(void *)&__sdethread_threading; +} + +#else /* not SUPPORTS_WEAK */ + +static inline int +__gthread_active_p (void) +{ + return 1; +} + +#endif /* SUPPORTS_WEAK */ + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthrw_(__sdethread_once) (__once, __func); + else + return -1; +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthrw_(__sdethread_key_create) (__key, __dtor); +} + +static inline int +__gthread_key_delete (__gthread_key_t __key) +{ + return __gthrw_(__sdethread_key_delete) (__key); +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + return __gthrw_(__sdethread_getspecific) (__key); +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthrw_(__sdethread_setspecific) (__key, __ptr); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex)) +{ + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(__sdethread_mutex_lock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(__sdethread_mutex_trylock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(__sdethread_mutex_unlock) (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + __mutex->depth = 0; + __mutex->owner = __gthrw_(__sdethread_self) (); + return __gthrw_(__sdethread_mutex_init) (&__mutex->actual, NULL); +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + __sdethread_t __me = __gthrw_(__sdethread_self) (); + + if (__mutex->owner != __me) + { + __gthrw_(__sdethread_mutex_lock) (&__mutex->actual); + __mutex->owner = __me; + } + + __mutex->depth++; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + __sdethread_t __me = __gthrw_(__sdethread_self) (); + + if (__mutex->owner != __me) + { + if (__gthrw_(__sdethread_mutex_trylock) (&__mutex->actual)) + return 1; + __mutex->owner = __me; + } + + __mutex->depth++; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + if (--__mutex->depth == 0) + { + __mutex->owner = (__sdethread_t) 0; + __gthrw_(__sdethread_mutex_unlock) (&__mutex->actual); + } + } + return 0; +} + +#ifdef __cplusplus +} +#endif + +#endif /* ! GCC_GTHR_MIPSSDE_H */ diff --git a/libgcc/config/pa/gthr-dce.h b/libgcc/config/pa/gthr-dce.h new file mode 100644 index 00000000000..d32155a9352 --- /dev/null +++ b/libgcc/config/pa/gthr-dce.h @@ -0,0 +1,563 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ +/* Copyright (C) 1997, 1999, 2000, 2001, 2004, 2005, 2008, 2009 + Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_DCE_H +#define GCC_GTHR_DCE_H + +/* If _DCE_THREADS is not defined, then we're building the single + threaded version of the libraries and do not want to reference + anything related to pthreads or dce. */ +#ifndef _DCE_THREADS +#include "gthr-single.h" +#else +/* DCE threads interface. + DCE threads are based on POSIX threads draft 4, and many things + have changed since then. */ + +/* Make sure CONST_CAST2 (original in system.h) is defined. */ +#ifndef CONST_CAST2 +#ifdef __cplusplus +#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) +#else +#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) +#endif +#endif + +#define __GTHREADS 1 + +#include <pthread.h> + +typedef pthread_key_t __gthread_key_t; +typedef pthread_once_t __gthread_once_t; +typedef pthread_mutex_t __gthread_mutex_t; +typedef pthread_mutex_t __gthread_recursive_mutex_t; + +#define __GTHREAD_ONCE_INIT pthread_once_init + +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function + +#define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK +# define __gthrw(name) \ + static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); +# define __gthrw_(name) __gthrw_ ## name +#else +# define __gthrw(name) +# define __gthrw_(name) name +#endif + +__gthrw(pthread_once) +__gthrw(pthread_keycreate) +__gthrw(pthread_getspecific) +__gthrw(pthread_setspecific) +__gthrw(pthread_create) +__gthrw(pthread_mutex_init) +__gthrw(pthread_mutex_destroy) +__gthrw(pthread_mutex_lock) +__gthrw(pthread_mutex_trylock) +__gthrw(pthread_mutex_unlock) +__gthrw(pthread_mutexattr_create) +__gthrw(pthread_mutexattr_setkind_np) +__gthrw(pthread_mutexattr_delete) + +#ifdef _LIBOBJC +/* Objective-C. */ +__gthrw(pthread_cond_broadcast) +__gthrw(pthread_cond_destroy) +__gthrw(pthread_cond_init) +__gthrw(pthread_cond_signal) +__gthrw(pthread_cond_wait) +__gthrw(pthread_exit) + +#ifdef pthread_getunique_np +# define __gthrw_pthread_getunique_np pthread_getunique_np +#else +__gthrw(pthread_getunique_np) +# define __gthrw_pthread_getunique_np __gthrw_(pthread_getunique_np) +#endif + +__gthrw(pthread_mutex_destroy) +__gthrw(pthread_self) +__gthrw(pthread_yield) +#endif + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK + +static inline int +__gthread_active_p (void) +{ + static void *const __gthread_active_ptr = (void *) &__gthrw_(pthread_create); + return __gthread_active_ptr != 0; +} + +#else /* not SUPPORTS_WEAK */ + +static inline int +__gthread_active_p (void) +{ + return 1; +} + +#endif /* SUPPORTS_WEAK */ + +#ifdef _LIBOBJC + +/* Key structure for maintaining thread specific storage */ +static pthread_key_t _objc_thread_storage; + +/* Thread local storage for a single thread */ +static void *thread_local_storage = NULL; + +/* Backend initialization functions */ + +/* Initialize the threads subsystem. */ +static inline int +__gthread_objc_init_thread_system (void) +{ + if (__gthread_active_p ()) + /* Initialize the thread storage key. */ + return __gthrw_(pthread_keycreate) (&_objc_thread_storage, NULL); + else + return -1; +} + +/* Close the threads subsystem. */ +static inline int +__gthread_objc_close_thread_system (void) +{ + if (__gthread_active_p ()) + return 0; + else + return -1; +} + +/* Backend thread functions */ + +/* Create a new thread of execution. */ +static inline objc_thread_t +__gthread_objc_thread_detach (void (*func)(void *), void *arg) +{ + objc_thread_t thread_id; + pthread_t new_thread_handle; + + if (!__gthread_active_p ()) + return NULL; + + if (!(__gthrw_(pthread_create) (&new_thread_handle, pthread_attr_default, + (void *) func, arg))) + { + /* ??? May not work! (64bit) */ + thread_id = *(objc_thread_t *) &new_thread_handle; + pthread_detach (&new_thread_handle); /* Fully detach thread. */ + } + else + thread_id = NULL; + + return thread_id; +} + +/* Set the current thread's priority. */ +static inline int +__gthread_objc_thread_set_priority (int priority) +{ + int sys_priority = 0; + + if (!__gthread_active_p ()) + return -1; + + switch (priority) + { + case OBJC_THREAD_INTERACTIVE_PRIORITY: + sys_priority = (PRI_FG_MIN_NP + PRI_FG_MAX_NP) / 2; + break; + default: + case OBJC_THREAD_BACKGROUND_PRIORITY: + sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2; + break; + case OBJC_THREAD_LOW_PRIORITY: + sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2; + break; + } + + /* Change the priority. */ + if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0) + return 0; + else + /* Failed */ + return -1; +} + +/* Return the current thread's priority. */ +static inline int +__gthread_objc_thread_get_priority (void) +{ + int sys_priority; + + if (__gthread_active_p ()) + { + if ((sys_priority = pthread_getprio (__gthrw_(pthread_self) ())) >= 0) + { + if (sys_priority >= PRI_FG_MIN_NP + && sys_priority <= PRI_FG_MAX_NP) + return OBJC_THREAD_INTERACTIVE_PRIORITY; + if (sys_priority >= PRI_BG_MIN_NP + && sys_priority <= PRI_BG_MAX_NP) + return OBJC_THREAD_BACKGROUND_PRIORITY; + return OBJC_THREAD_LOW_PRIORITY; + } + + /* Failed */ + return -1; + } + else + return OBJC_THREAD_INTERACTIVE_PRIORITY; +} + +/* Yield our process time to another thread. */ +static inline void +__gthread_objc_thread_yield (void) +{ + if (__gthread_active_p ()) + __gthrw_(pthread_yield) (); +} + +/* Terminate the current thread. */ +static inline int +__gthread_objc_thread_exit (void) +{ + if (__gthread_active_p ()) + /* exit the thread */ + __gthrw_(pthread_exit) (&__objc_thread_exit_status); + + /* Failed if we reached here */ + return -1; +} + +/* Returns an integer value which uniquely describes a thread. */ +static inline objc_thread_t +__gthread_objc_thread_id (void) +{ + if (__gthread_active_p ()) + { + pthread_t self = __gthrw_(pthread_self) (); + + return (objc_thread_t) __gthrw_pthread_getunique_np (&self); + } + else + return (objc_thread_t) 1; +} + +/* Sets the thread's local storage pointer. */ +static inline int +__gthread_objc_thread_set_data (void *value) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); + else + { + thread_local_storage = value; + return 0; + } +} + +/* Returns the thread's local storage pointer. */ +static inline void * +__gthread_objc_thread_get_data (void) +{ + void *value = NULL; + + if (__gthread_active_p ()) + { + if (!(__gthrw_(pthread_getspecific) (_objc_thread_storage, &value))) + return value; + + return NULL; + } + else + return thread_local_storage; +} + +/* Backend mutex functions */ + +/* Allocate a mutex. */ +static inline int +__gthread_objc_mutex_allocate (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + { + mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); + + if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, + pthread_mutexattr_default)) + { + objc_free (mutex->backend); + mutex->backend = NULL; + return -1; + } + } + + return 0; +} + +/* Deallocate a mutex. */ +static inline int +__gthread_objc_mutex_deallocate (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + { + if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) + return -1; + + objc_free (mutex->backend); + mutex->backend = NULL; + } + + return 0; +} + +/* Grab a lock on a mutex. */ +static inline int +__gthread_objc_mutex_lock (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend); + else + return 0; +} + +/* Try to grab a lock on a mutex. */ +static inline int +__gthread_objc_mutex_trylock (objc_mutex_t mutex) +{ + if (__gthread_active_p () + && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 1) + return -1; + + return 0; +} + +/* Unlock the mutex */ +static inline int +__gthread_objc_mutex_unlock (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); + else + return 0; +} + +/* Backend condition mutex functions */ + +/* Allocate a condition. */ +static inline int +__gthread_objc_condition_allocate (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Deallocate a condition. */ +static inline int +__gthread_objc_condition_deallocate (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Wait on the condition */ +static inline int +__gthread_objc_condition_wait (objc_condition_t condition + __attribute__ ((__unused__)), + objc_mutex_t mutex __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Wake up all threads waiting on this condition. */ +static inline int +__gthread_objc_condition_broadcast (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Wake up one thread waiting on this condition. */ +static inline int +__gthread_objc_condition_signal (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +#else /* _LIBOBJC */ + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_once) (__once, __func); + else + return -1; +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthrw_(pthread_keycreate) (__key, __dtor); +} + +static inline int +__gthread_key_delete (__gthread_key_t __key __attribute__ ((__unused__))) +{ + /* Operation is not supported. */ + return -1; +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + void *__ptr; + if (__gthrw_(pthread_getspecific) (__key, &__ptr) == 0) + return __ptr; + else + return 0; +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthrw_(pthread_setspecific) + (__key, CONST_CAST2(void *, const void *, __ptr)); +} + +static inline void +__gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + __gthrw_(pthread_mutex_init) (__mutex, pthread_mutexattr_default); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_destroy) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_lock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_trylock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_unlock) (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + pthread_mutexattr_t __attr; + int __r; + + __r = __gthrw_(pthread_mutexattr_create) (&__attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_setkind_np) (&__attr, + MUTEX_RECURSIVE_NP); + if (!__r) + __r = __gthrw_(pthread_mutex_init) (__mutex, __attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_delete) (&__attr); + return __r; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_lock (__mutex); +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_trylock (__mutex); +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_unlock (__mutex); +} + +#endif /* _LIBOBJC */ + +#endif +#endif /* ! GCC_GTHR_DCE_H */ diff --git a/libgcc/config/rs6000/gthr-aix.h b/libgcc/config/rs6000/gthr-aix.h new file mode 100644 index 00000000000..342f09187f0 --- /dev/null +++ b/libgcc/config/rs6000/gthr-aix.h @@ -0,0 +1,35 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ +/* Copyright (C) 2000, 2009, 2011 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_AIX_H +#define GCC_GTHR_AIX_H + +#ifdef _THREAD_SAFE +#include "config/gthr-posix.h" +#else +#include "gthr-single.h" +#endif + +#endif /* GCC_GTHR_AIX_H */ diff --git a/libgcc/config/s390/gthr-tpf.h b/libgcc/config/s390/gthr-tpf.h new file mode 100644 index 00000000000..fb23e91cfcd --- /dev/null +++ b/libgcc/config/s390/gthr-tpf.h @@ -0,0 +1,229 @@ +/* Threads compatibility routines for libgcc2 and libobjc. + Compile this one with gcc. + Copyright (C) 2004, 2005, 2008, 2009 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +/* TPF needs its own version of gthr-*.h because TPF always links to + the thread library. However, for performance reasons we still do not + want to issue thread api calls unless a check is made to see that we + are running as a thread. */ + +#ifndef GCC_GTHR_TPF_H +#define GCC_GTHR_TPF_H + +/* POSIX threads specific definitions. + Easy, since the interface is just one-to-one mapping. */ + +#define __GTHREADS 1 + +/* Some implementations of <pthread.h> require this to be defined. */ +#ifndef _REENTRANT +#define _REENTRANT 1 +#endif + +#include <pthread.h> +#include <unistd.h> + +typedef pthread_key_t __gthread_key_t; +typedef pthread_once_t __gthread_once_t; +typedef pthread_mutex_t __gthread_mutex_t; +typedef pthread_mutex_t __gthread_recursive_mutex_t; + +#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) +#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER +#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) +#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP +#endif + +#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER +#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function + +#define NOTATHREAD 00 +#define ECBBASEPTR (unsigned long int) *(unsigned int *)0x00000514u +#define ECBPG2PTR ECBBASEPTR + 0x1000 +#define CE2THRCPTR *((unsigned char *)(ECBPG2PTR + 16)) +#define __tpf_pthread_active() (CE2THRCPTR != NOTATHREAD) + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK +# define __gthrw(name) \ + static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); +# define __gthrw_(name) __gthrw_ ## name +#else +# define __gthrw(name) +# define __gthrw_(name) name +#endif + +__gthrw(pthread_once) +__gthrw(pthread_key_create) +__gthrw(pthread_key_delete) +__gthrw(pthread_getspecific) +__gthrw(pthread_setspecific) +__gthrw(pthread_create) + +__gthrw(pthread_mutex_lock) +__gthrw(pthread_mutex_trylock) +__gthrw(pthread_mutex_unlock) +__gthrw(pthread_mutexattr_init) +__gthrw(pthread_mutexattr_settype) +__gthrw(pthread_mutexattr_destroy) +__gthrw(pthread_mutex_init) +__gthrw(pthread_mutex_destroy) + +static inline int +__gthread_active_p (void) +{ + return 1; +} + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_once) (__once, __func); + else + return -1; +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_key_create) (__key, __dtor); + else + return -1; +} + +static inline int +__gthread_key_delete (__gthread_key_t __key) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_key_delete) (__key); + else + return -1; +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_getspecific) (__key); + else + return NULL; +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_setspecific) (__key, __ptr); + else + return -1; +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_mutex_destroy) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_mutex_lock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_mutex_trylock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthrw_(pthread_mutex_unlock) (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthread_mutex_lock (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthread_mutex_trylock (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + return __gthread_mutex_unlock (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + if (__tpf_pthread_active ()) + { + pthread_mutexattr_t __attr; + int __r; + + __r = __gthrw_(pthread_mutexattr_init) (&__attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_settype) (&__attr, + PTHREAD_MUTEX_RECURSIVE); + if (!__r) + __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); + return __r; + } + return 0; +} + + +#endif /* ! GCC_GTHR_TPF_H */ |