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authorAgustina Arzille <avarzille@riseup.net>2018-03-18 18:22:55 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2018-03-18 18:23:45 +0100
commitfb4cc8a0c2cc7ca710a2e1b21d33fcf7c5e3e8ba (patch)
tree0144983157b1b454724c37fe9e3e2b1e4aaa6629 /sysdeps
parent542c20a171cbc8cb63155fa6344708d26e9c446b (diff)
downloadglibc-fb4cc8a0c2cc7ca710a2e1b21d33fcf7c5e3e8ba.tar.gz
hurd: Reimplement libc locks using mach's gsync
* hurd/Makefile (routines): Add hurdlock. * hurd/Versions (GLIBC_PRIVATE): Added new entry to export the above interface. (HURD_CTHREADS_0.3): Remove __libc_getspecific. * hurd/hurdpid.c: Include <lowlevellock.h> (_S_msg_proc_newids): Use lll_wait to synchronize. * hurd/hurdsig.c: (reauth_proc): Use __mutex_lock and __mutex_unlock. * hurd/setauth.c: Include <hurdlock.h>, use integer for synchronization. * mach/Makefile (lock-headers): Remove machine-lock.h. * mach/lock-intern.h: Include <lowlevellock.h> instead of <machine-lock.h>. (__spin_lock_t): New type. (__SPIN_LOCK_INITIALIZER): New macro. (__spin_lock, __spin_unlock, __spin_try_lock, __spin_lock_locked, __mutex_init, __mutex_lock_solid, __mutex_unlock_solid, __mutex_lock, __mutex_unlock, __mutex_trylock): Use lll to implement locks. * mach/mutex-init.c: Include <lowlevellock.h> instead of <cthreads.h>. (__mutex_init): Initialize with lll. * manual/errno.texi (EOWNERDEAD, ENOTRECOVERABLE): New errno values. * sysdeps/mach/Makefile: Add libmachuser as dependencies for libs needing lll. * sysdeps/mach/hurd/bits/errno.h: Regenerate. * sysdeps/mach/hurd/cthreads.c (__libc_getspecific): Remove function. * sysdeps/mach/hurd/bits/libc-lock.h: Remove file. * sysdeps/mach/hurd/setpgid.c: Include <lowlevellock.h>. (__setpgid): Use lll for synchronization. * sysdeps/mach/hurd/setsid.c: Likewise with __setsid. * sysdeps/mach/bits/libc-lock.h: Include <tls.h> and <lowlevellock.h> instead of <cthreads.h>. (_IO_lock_inexpensive): New macro (__libc_lock_recursive_t, __rtld_lock_recursive_t): New structures. (__libc_lock_self0): New declaration. (__libc_lock_owner_self): New macro. (__libc_key_t): Remove type. (_LIBC_LOCK_INITIALIZER): New macro. (__libc_lock_define_initialized, __libc_lock_init, __libc_lock_fini, __libc_lock_fini_recursive, __rtld_lock_fini_recursive, __libc_lock_lock, __libc_lock_trylock, __libc_lock_unlock, __libc_lock_define_initialized_recursive, __rtld_lock_define_initialized_recursive, __libc_lock_init_recursive, __libc_lock_trylock_recursive, __libc_lock_lock_recursive, __libc_lock_unlock_recursive, __rtld_lock_initialize, __rtld_lock_trylock_recursive, __rtld_lock_lock_recursive, __rtld_lock_unlock_recursive __libc_once_define, __libc_mutex_unlock): Reimplement with lll. (__libc_lock_define_recursive, __rtld_lock_define_recursive, _LIBC_LOCK_RECURSIVE_INITIALIZER, _RTLD_LOCK_RECURSIVE_INITIALIZER): New macros. Include <libc-lockP.h> to reimplement libc_key* with pthread_key*. * hurd/hurdlock.c: New file. * hurd/hurdlock.h: New file. * mach/lowlevellock.h: New file
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/mach/Makefile26
-rw-r--r--sysdeps/mach/hurd/bits/errno.h6
-rw-r--r--sysdeps/mach/hurd/cthreads.c10
-rw-r--r--sysdeps/mach/hurd/libc-lock.h216
-rw-r--r--sysdeps/mach/hurd/setpgid.c10
-rw-r--r--sysdeps/mach/hurd/setsid.c10
-rw-r--r--sysdeps/mach/libc-lock.h142
7 files changed, 142 insertions, 278 deletions
diff --git a/sysdeps/mach/Makefile b/sysdeps/mach/Makefile
index 2b48b13f61..475894b046 100644
--- a/sysdeps/mach/Makefile
+++ b/sysdeps/mach/Makefile
@@ -50,4 +50,30 @@ mach-before-compile:
before-compile += $(mach-before-compile)
endif
+ifeq (crypt,$(subdir))
+ LDLIBS-crypt.so += $(objdir)/mach/libmachuser.so
+else ifeq (dlfcn,$(subdir))
+ LDLIBS-dl.so += $(objdir)/mach/libmachuser.so
+else ifeq (nis,$(subdir))
+ LDLIBS-nsl.so += $(objdir)/mach/libmachuser.so
+ LDLIBS-nss_nis.so += $(objdir)/mach/libmachuser.so
+ LDLIBS-nss_nisplus.so += $(objdir)/mach/libmachuser.so
+ LDLIBS-nss_compat.so += $(objdir)/mach/libmachuser.so
+else ifeq (nss,$(subdir))
+ LDLIBS-nss.so += $(objdir)/mach/libmachuser.so
+ LDLIBS-nss_files.so += $(objdir)/mach/libmachuser.so
+ LDLIBS-nss_db.so += $(objdir)/mach/libmachuser.so
+ LDLIBS-nss_compat.so += $(objdir)/mach/libmachuser.so
+else ifeq (hesiod,$(subdir))
+ LDLIBS-nss_hesiod.so += $(objdir)/mach/libmachuser.so
+else ifeq (posix,$(subdir))
+ LDLIBS-tst-rfc3484 += $(objdir)/mach/libmachuser.so
+ LDLIBS-tst-rfc3484-2 += $(objdir)/mach/libmachuser.so
+ LDLIBS-tst-rfc3484-3 += $(objdir)/mach/libmachuser.so
+else ifeq (nscd,$(subdir))
+ LDLIBS-nscd += $(objdir)/mach/libmachuser.so
+endif
+
+LDLIBS-pthread.so += $(objdir)/mach/libmachuser.so
+
endif # in-Makerules
diff --git a/sysdeps/mach/hurd/bits/errno.h b/sysdeps/mach/hurd/bits/errno.h
index f16cd51a63..999730721f 100644
--- a/sysdeps/mach/hurd/bits/errno.h
+++ b/sysdeps/mach/hurd/bits/errno.h
@@ -127,6 +127,8 @@ enum __error_t_codes
EPROTO = 0x40000074, /* Protocol error */
ETIME = 0x40000075, /* Timer expired */
ECANCELED = 0x40000077, /* Operation canceled */
+ EOWNERDEAD = 0x40000078, /* Robust mutex owner died */
+ ENOTRECOVERABLE = 0x40000079, /* Robust mutex irrecoverable */
/* Errors from <mach/message.h>. */
EMACH_SEND_IN_PROGRESS = 0x10000001,
@@ -322,6 +324,8 @@ enum __error_t_codes
#define EPROTO 0x40000074
#define ETIME 0x40000075
#define ECANCELED 0x40000077
+#define EOWNERDEAD 0x40000078
+#define ENOTRECOVERABLE 0x40000079
/* Errors from <mach/message.h>. */
#define EMACH_SEND_IN_PROGRESS 0x10000001
@@ -405,6 +409,6 @@ enum __error_t_codes
#define ED_NO_MEMORY 2508
#define ED_READ_ONLY 2509
-#define _HURD_ERRNOS 120
+#define _HURD_ERRNOS 122
#endif /* bits/errno.h. */
diff --git a/sysdeps/mach/hurd/cthreads.c b/sysdeps/mach/hurd/cthreads.c
index 585650522a..05c48e4e4c 100644
--- a/sysdeps/mach/hurd/cthreads.c
+++ b/sysdeps/mach/hurd/cthreads.c
@@ -52,13 +52,3 @@ __cthread_setspecific (cthread_key_t key, void *val)
__set_errno (ENOSYS);
return -1;
}
-
-/* Call cthread_getspecific which gets a pointer to the return value instead
- of just returning it. */
-void *
-__libc_getspecific (cthread_key_t key)
-{
- void *val;
- __cthread_getspecific (key, &val);
- return val;
-}
diff --git a/sysdeps/mach/hurd/libc-lock.h b/sysdeps/mach/hurd/libc-lock.h
deleted file mode 100644
index f5a1f66a23..0000000000
--- a/sysdeps/mach/hurd/libc-lock.h
+++ /dev/null
@@ -1,216 +0,0 @@
-/* libc-internal interface for mutex locks. Hurd version using Mach cthreads.
- Copyright (C) 1996-2018 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _LIBC_LOCK_H
-#define _LIBC_LOCK_H 1
-
-#if (_LIBC - 0) || (_CTHREADS_ - 0)
-#include <cthreads.h>
-
-/* The locking here is very inexpensive, even for inlining. */
-#define _IO_lock_inexpensive 1
-
-typedef struct mutex __libc_lock_t;
-typedef struct
-{
- struct mutex mutex;
- void *owner;
- int count;
-} __libc_lock_recursive_t;
-typedef __libc_lock_recursive_t __rtld_lock_recursive_t;
-
-extern char __libc_lock_self0[0];
-#define __libc_lock_owner_self() (__LIBC_NO_TLS () ? &__libc_lock_self0 : THREAD_SELF)
-
-#else
-typedef struct __libc_lock_opaque__ __libc_lock_t;
-typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
-#endif
-
-/* Define a lock variable NAME with storage class CLASS. The lock must be
- initialized with __libc_lock_init before it can be used (or define it
- with __libc_lock_define_initialized, below). Use `extern' for CLASS to
- declare a lock defined in another module. In public structure
- definitions you must use a pointer to the lock structure (i.e., NAME
- begins with a `*'), because its storage size will not be known outside
- of libc. */
-#define __libc_lock_define(CLASS,NAME) \
- CLASS __libc_lock_t NAME;
-
-/* Define an initialized lock variable NAME with storage class CLASS. */
-#define _LIBC_LOCK_INITIALIZER MUTEX_INITIALIZER
-#define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME = _LIBC_LOCK_INITIALIZER;
-
-/* Initialize the named lock variable, leaving it in a consistent, unlocked
- state. */
-#define __libc_lock_init(NAME) __mutex_init (&(NAME))
-
-/* Finalize the named lock variable, which must be locked. It cannot be
- used again until __libc_lock_init is called again on it. This must be
- called on a lock variable before the containing storage is reused. */
-#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
-#define __libc_lock_fini_recursive(NAME) __mutex_unlock (&(NAME).mutex)
-#define __rtld_lock_fini_recursive(NAME) __mutex_unlock (&(NAME).mutex)
-
-
-/* Lock the named lock variable. */
-#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
-
-/* Lock the named lock variable. */
-#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
-
-/* Unlock the named lock variable. */
-#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
-
-
-#define __libc_lock_define_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME;
-#define _LIBC_LOCK_RECURSIVE_INITIALIZER { MUTEX_INITIALIZER, 0, 0 }
-#define __libc_lock_define_initialized_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
-
-#define __rtld_lock_define_recursive(CLASS,NAME) \
- __libc_lock_define_recursive (CLASS, NAME)
-#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
- _LIBC_LOCK_RECURSIVE_INITIALIZER
-#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
- __libc_lock_define_initialized_recursive (CLASS, NAME)
-
-#define __libc_lock_init_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- __lock->owner = 0; mutex_init (&__lock->mutex); })
-
-#define __libc_lock_trylock_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- void *__self = __libc_lock_owner_self (); \
- __mutex_trylock (&__lock->mutex) \
- ? (__lock->owner = __self, __lock->count = 1, 0) \
- : __lock->owner == __self ? (++__lock->count, 0) : 1; })
-
-#define __libc_lock_lock_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- void *__self = __libc_lock_owner_self (); \
- if (__mutex_trylock (&__lock->mutex) \
- || (__lock->owner != __self \
- && (__mutex_lock (&__lock->mutex), 1))) \
- __lock->owner = __self, __lock->count = 1; \
- else \
- ++__lock->count; \
- })
-#define __libc_lock_unlock_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- if (--__lock->count == 0) \
- { \
- __lock->owner = 0; \
- __mutex_unlock (&__lock->mutex); \
- } \
- })
-
-
-#define __rtld_lock_initialize(NAME) \
- (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
-#define __rtld_lock_trylock_recursive(NAME) \
- __libc_lock_trylock_recursive (NAME)
-#define __rtld_lock_lock_recursive(NAME) \
- __libc_lock_lock_recursive(NAME)
-#define __rtld_lock_unlock_recursive(NAME) \
- __libc_lock_unlock_recursive (NAME)
-
-
-/* XXX for now */
-#define __libc_rwlock_define __libc_lock_define
-#define __libc_rwlock_define_initialized __libc_lock_define_initialized
-#define __libc_rwlock_init __libc_lock_init
-#define __libc_rwlock_fini __libc_lock_fini
-#define __libc_rwlock_rdlock __libc_lock_lock
-#define __libc_rwlock_wrlock __libc_lock_lock
-#define __libc_rwlock_tryrdlock __libc_lock_trylock
-#define __libc_rwlock_trywrlock __libc_lock_trylock
-#define __libc_rwlock_unlock __libc_lock_unlock
-
-
-/* Start a critical region with a cleanup function */
-#define __libc_cleanup_region_start(DOIT, FCT, ARG) \
-{ \
- typeof (***(FCT)) *__save_FCT = (DOIT) ? (FCT) : 0; \
- typeof (ARG) __save_ARG = ARG; \
- /* close brace is in __libc_cleanup_region_end below. */
-
-/* End a critical region started with __libc_cleanup_region_start. */
-#define __libc_cleanup_region_end(DOIT) \
- if ((DOIT) && __save_FCT != 0) \
- (*__save_FCT)(__save_ARG); \
-}
-
-/* Sometimes we have to exit the block in the middle. */
-#define __libc_cleanup_end(DOIT) \
- if ((DOIT) && __save_FCT != 0) \
- (*__save_FCT)(__save_ARG); \
-
-#define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg)
-#define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute)
-
-#if (_CTHREADS_ - 0)
-
-/* Use mutexes as once control variables. */
-
-struct __libc_once
- {
- __libc_lock_t lock;
- int done;
- };
-
-#define __libc_once_define(CLASS,NAME) \
- CLASS struct __libc_once NAME = { MUTEX_INITIALIZER, 0 }
-
-/* Call handler iff the first call. */
-#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
- do { \
- __libc_lock_lock (ONCE_CONTROL.lock); \
- if (!ONCE_CONTROL.done) \
- (INIT_FUNCTION) (); \
- ONCE_CONTROL.done = 1; \
- __libc_lock_unlock (ONCE_CONTROL.lock); \
- } while (0)
-
-/* Get once control variable. */
-#define __libc_once_get(ONCE_CONTROL) ((ONCE_CONTROL).done != 0)
-
-#ifdef _LIBC
-/* We need portable names for some functions. E.g., when they are
- used as argument to __libc_cleanup_region_start. */
-#define __libc_mutex_unlock __mutex_unlock
-#endif
-
-/* Type for key of thread specific data. */
-typedef cthread_key_t __libc_key_t;
-
-#define __libc_key_create(KEY,DEST) __cthread_keycreate (KEY)
-#define __libc_setspecific(KEY,VAL) __cthread_setspecific (KEY, VAL)
-void *__libc_getspecific (__libc_key_t key);
-
-#endif /* _CTHREADS_ */
-
-/* Hide the definitions which are only supposed to be used inside libc in
- a separate file. This file is not present in the installation! */
-#ifdef _LIBC
-# include <libc-lockP.h>
-#endif
-
-#endif /* libc-lock.h */
diff --git a/sysdeps/mach/hurd/setpgid.c b/sysdeps/mach/hurd/setpgid.c
index 32186a25de..98b1341cfa 100644
--- a/sysdeps/mach/hurd/setpgid.c
+++ b/sysdeps/mach/hurd/setpgid.c
@@ -19,6 +19,7 @@
#include <unistd.h>
#include <hurd.h>
#include <hurd/port.h>
+#include <lowlevellock.h>
/* Set the process group ID of the process matching PID to PGID.
If PID is zero, the current process's process group ID is set.
@@ -38,14 +39,7 @@ __setpgid (pid_t pid, pid_t pgid)
/* Synchronize with the signal thread to make sure we have
received and processed proc_newids before returning to the user. */
while (_hurd_pids_changed_stamp == stamp)
- {
-#ifdef noteven
- /* XXX we have no need for a mutex, but cthreads demands one. */
- __condition_wait (&_hurd_pids_changed_sync, NULL);
-#else
- __swtch_pri(0);
-#endif
- }
+ lll_wait (&_hurd_pids_changed_stamp, stamp, 0);
return 0;
diff --git a/sysdeps/mach/hurd/setsid.c b/sysdeps/mach/hurd/setsid.c
index 0f6b24b1d2..7b989361d1 100644
--- a/sysdeps/mach/hurd/setsid.c
+++ b/sysdeps/mach/hurd/setsid.c
@@ -21,6 +21,7 @@
#include <hurd/port.h>
#include <hurd/fd.h>
#include <hurd/ioctl.h>
+#include <lowlevellock.h>
/* Create a new session with the calling process as its leader.
The process group IDs of the session and the calling process
@@ -55,14 +56,7 @@ __setsid (void)
returned by `getpgrp ()' in other threads) has been updated before
we return. */
while (_hurd_pids_changed_stamp == stamp)
- {
-#ifdef noteven
- /* XXX we have no need for a mutex, but cthreads demands one. */
- __condition_wait (&_hurd_pids_changed_sync, NULL);
-#else
- __swtch_pri (0);
-#endif
- }
+ lll_wait (&_hurd_pids_changed_stamp, stamp, 0);
}
HURD_CRITICAL_END;
diff --git a/sysdeps/mach/libc-lock.h b/sysdeps/mach/libc-lock.h
index 1bb0235cf2..2c64019b33 100644
--- a/sysdeps/mach/libc-lock.h
+++ b/sysdeps/mach/libc-lock.h
@@ -20,15 +20,32 @@
#define _LIBC_LOCK_H 1
#ifdef _LIBC
-#include <cthreads.h>
-#define __libc_lock_t struct mutex
+
+#include <tls.h>
+#include <lowlevellock.h>
+
+/* The locking here is very inexpensive, even for inlining. */
+#define _IO_lock_inexpensive 1
+
+typedef unsigned int __libc_lock_t;
+typedef struct
+{
+ __libc_lock_t lock;
+ int cnt;
+ void *owner;
+} __libc_lock_recursive_t;
+
+typedef __libc_lock_recursive_t __rtld_lock_recursive_t;
+
+extern char __libc_lock_self0[0];
+#define __libc_lock_owner_self() \
+ (__LIBC_NO_TLS () ? (void *)&__libc_lock_self0 : THREAD_SELF)
+
#else
typedef struct __libc_lock_opaque__ __libc_lock_t;
+typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
#endif
-/* Type for key of thread specific data. */
-typedef cthread_key_t __libc_key_t;
-
/* Define a lock variable NAME with storage class CLASS. The lock must be
initialized with __libc_lock_init before it can be used (or define it
with __libc_lock_define_initialized, below). Use `extern' for CLASS to
@@ -40,27 +57,97 @@ typedef cthread_key_t __libc_key_t;
CLASS __libc_lock_t NAME;
/* Define an initialized lock variable NAME with storage class CLASS. */
+#define _LIBC_LOCK_INITIALIZER LLL_INITIALIZER
#define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME = MUTEX_INITIALIZER;
+ CLASS __libc_lock_t NAME = LLL_INITIALIZER;
/* Initialize the named lock variable, leaving it in a consistent, unlocked
state. */
-#define __libc_lock_init(NAME) __mutex_init (&(NAME))
+#define __libc_lock_init(NAME) (NAME) = LLL_INITIALIZER
/* Finalize the named lock variable, which must be locked. It cannot be
used again until __libc_lock_init is called again on it. This must be
called on a lock variable before the containing storage is reused. */
-#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
+#define __libc_lock_fini __libc_lock_unlock
+#define __libc_lock_fini_recursive __libc_lock_unlock_recursive
+#define __rtld_lock_fini_recursive __rtld_lock_unlock_recursive
/* Lock the named lock variable. */
-#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
+#define __libc_lock_lock(NAME) \
+ ({ lll_lock (&(NAME), 0); 0; })
/* Lock the named lock variable. */
-#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
+#define __libc_lock_trylock(NAME) lll_trylock (&(NAME))
/* Unlock the named lock variable. */
-#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
-
+#define __libc_lock_unlock(NAME) \
+ ({ lll_unlock (&(NAME), 0); 0; })
+
+#define __libc_lock_define_recursive(CLASS,NAME) \
+ CLASS __libc_lock_recursive_t NAME;
+
+#define _LIBC_LOCK_RECURSIVE_INITIALIZER { LLL_INITIALIZER, 0, 0 }
+
+#define __libc_lock_define_initialized_recursive(CLASS,NAME) \
+ CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
+
+#define __rtld_lock_define_recursive(CLASS,NAME) \
+ __libc_lock_define_recursive (CLASS, NAME)
+#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
+ _LIBC_LOCK_RECURSIVE_INITIALIZER
+#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
+ __libc_lock_define_initialized_recursive (CLASS, NAME)
+
+#define __libc_lock_init_recursive(NAME) \
+ ({ \
+ (NAME) = (__libc_lock_recursive_t)_LIBC_LOCK_RECURSIVE_INITIALIZER; \
+ 0; \
+ })
+
+#define __libc_lock_trylock_recursive(NAME) \
+ ({ \
+ __libc_lock_recursive_t *const __lock = &(NAME); \
+ void *__self = __libc_lock_owner_self (); \
+ int __r = 0; \
+ if (__self == __lock->owner) \
+ ++__lock->cnt; \
+ else if ((__r = lll_trylock (&__lock->lock)) == 0) \
+ __lock->owner = __self, __lock->cnt = 1; \
+ __r; \
+ })
+
+#define __libc_lock_lock_recursive(NAME) \
+ ({ \
+ __libc_lock_recursive_t *const __lock = &(NAME); \
+ void *__self = __libc_lock_owner_self (); \
+ if (__self != __lock->owner) \
+ { \
+ lll_lock (&__lock->lock, 0); \
+ __lock->owner = __self; \
+ } \
+ ++__lock->cnt; \
+ (void)0; \
+ })
+
+#define __libc_lock_unlock_recursive(NAME) \
+ ({ \
+ __libc_lock_recursive_t *const __lock = &(NAME); \
+ if (--__lock->cnt == 0) \
+ { \
+ __lock->owner = 0; \
+ lll_unlock (&__lock->lock, 0); \
+ } \
+ })
+
+
+#define __rtld_lock_initialize(NAME) \
+ (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
+#define __rtld_lock_trylock_recursive(NAME) \
+ __libc_lock_trylock_recursive (NAME)
+#define __rtld_lock_lock_recursive(NAME) \
+ __libc_lock_lock_recursive(NAME)
+#define __rtld_lock_unlock_recursive(NAME) \
+ __libc_lock_unlock_recursive (NAME)
/* XXX for now */
#define __libc_rwlock_define __libc_lock_define
@@ -95,7 +182,7 @@ __libc_cleanup_fct (struct __libc_cleanup_frame *framep)
__attribute__ ((__cleanup__ (__libc_cleanup_fct))) = \
{ .__fct = (FCT), .__argp = (ARG), .__doit = (DOIT) };
-/* This one closes the brace above. */
+/* This one closes the brace above. */
#define __libc_cleanup_region_end(DOIT) \
__cleanup.__doit = (DOIT); \
} \
@@ -106,7 +193,7 @@ __libc_cleanup_fct (struct __libc_cleanup_frame *framep)
#define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg)
#define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute)
-/* Use mutexes as once control variables. */
+/* Use mutexes as once control variables. */
struct __libc_once
{
@@ -115,8 +202,7 @@ struct __libc_once
};
#define __libc_once_define(CLASS,NAME) \
- CLASS struct __libc_once NAME = { MUTEX_INITIALIZER, 0 }
-
+ CLASS struct __libc_once NAME = { _LIBC_LOCK_INITIALIZER, 0 }
/* Call handler iff the first call. */
#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
@@ -134,25 +220,11 @@ struct __libc_once
#ifdef _LIBC
/* We need portable names for some functions. E.g., when they are
used as argument to __libc_cleanup_region_start. */
-#define __libc_mutex_unlock __mutex_unlock
-#endif
+#define __libc_mutex_unlock __libc_lock_unlock
-#define __libc_key_create(KEY,DEST) __cthread_keycreate (KEY)
-#define __libc_setspecific(KEY,VAL) __cthread_setspecific (KEY, VAL)
-void *__libc_getspecific (__libc_key_t key);
-
-/* XXX until cthreads supports recursive locks */
-#define __libc_lock_define_initialized_recursive __libc_lock_define_initialized
-#define __libc_lock_init_recursive __libc_lock_init
-#define __libc_lock_fini_recursive __libc_lock_fini
-#define __libc_lock_trylock_recursive __libc_lock_trylock
-#define __libc_lock_unlock_recursive __libc_lock_unlock
-#define __libc_lock_lock_recursive __libc_lock_lock
-
-#define __rtld_lock_define_initialized_recursive __libc_lock_define_initialized
-#define __rtld_lock_fini_recursive __libc_lock_fini
-#define __rtld_lock_trylock_recursive __libc_lock_trylock
-#define __rtld_lock_unlock_recursive __libc_lock_unlock
-#define __rtld_lock_lock_recursive __libc_lock_lock
+/* Hide the definitions which are only supposed to be used inside libc in
+ a separate file. This file is not present in the installation! */
+# include <libc-lockP.h>
+#endif
#endif /* libc-lock.h */