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{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by Peter Vreman
member of the Free Pascal development team.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This file contains a pthread.h headerconversion for Linux.
This program 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.
**********************************************************************}
{*****************************************************************************
Local POSIX Threads (pthread) imports
*****************************************************************************}
{ Attributes }
const
THREAD_PRIORITY_IDLE = 1;
THREAD_PRIORITY_LOWEST = 15;
THREAD_PRIORITY_BELOW_NORMAL = 30;
THREAD_PRIORITY_NORMAL = 50;
THREAD_PRIORITY_ABOVE_NORMAL = 70;
THREAD_PRIORITY_HIGHEST = 80;
THREAD_PRIORITY_TIME_CRITICAL = 99;
//PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP : array [0..5]of Integer = (0, 0, 0, 1, 0, 0);
Type
psem_t = ^sem_t;
TSemaphore = sem_t;
PSemaphore = ^TSemaphore;
{$ifndef FPC_USE_LIBC}
tlibc_sigset = array[0..(1024 div 32)-1] of cuLong;
plibc_sigset = ^tlibc_sigset;
{$else not FPC_USE_LIBC}
tlibc_sigset = tsigset;
plibc_sigset = psigset;
{$endif not FPC_USE_LIBC}
TThreadPriority = (tpIdle, tpLowest, tpLower, tpNormal, tpHigher, tpHighest, tpTimeCritical);
{
const
Priorities: array [TThreadPriority] of Integer = (
THREAD_PRIORITY_IDLE, THREAD_PRIORITY_LOWEST, THREAD_PRIORITY_BELOW_NORMAL,
THREAD_PRIORITY_NORMAL, THREAD_PRIORITY_ABOVE_NORMAL,
THREAD_PRIORITY_HIGHEST, THREAD_PRIORITY_TIME_CRITICAL
);
}
const
_POSIX_THREAD_THREADS_MAX = 64;
PTHREAD_THREADS_MAX = 512;
_POSIX_THREAD_KEYS_MAX = 128;
PTHREAD_KEYS_MAX = 128;
type
ppthread_t = ^pthread_t;
{
p_pthread_queue = ^_pthread_queue;
}
ppthread_mutex_t = ^pthread_mutex_t;
ppthread_cond_t = ^pthread_cond_t;
{ Attributes }
const
PTHREAD_CREATE_JOINABLE = 0;
PTHREAD_CREATE_DETACHED = 1;
PTHREAD_INHERIT_SCHED = 0;
PTHREAD_EXPLICIT_SCHED = 1;
PTHREAD_SCOPE_SYSTEM = 0;
PTHREAD_SCOPE_PROCESS = 1;
type
psched_param = ^sched_param;
ppthread_attr_t = ^pthread_attr_t;
ppthread_mutexattr_t = ^pthread_mutexattr_t;
ppthread_condattr_t = ^pthread_condattr_t;
ppthread_key_t = ^pthread_key_t;
{ pthread_once_t = cint;
ppthread_once_t = ^pthread_once_t;}
const
PTHREAD_ONCE_INIT = 0;
type
(*
tpcb_routine = Procedure(P:Pointer); cdecl;
p_pthread_cleanup_buffer = ^_pthread_cleanup_buffer;
_pthread_cleanup_buffer = record
routine : tpcb_routine; { Function to call. }
arg : Pointer; { Its argument. }
canceltype:LongInt; { Saved cancellation type. }
prev : p_pthread_cleanup_buffer; { Chaining of cleanup functions. }
end;
*)
__start_routine_t = function (_para1:pointer):pointer;cdecl;
__destr_function_t = procedure (_para1:pointer);cdecl;
{ t_pthread_cleanup_push_routine = procedure (_para1:pointer);
t_pthread_cleanup_push_defer_routine = procedure (_para1:pointer);}
{$ifndef dynpthreads}
function pthread_create(__thread:ppthread_t; __attr:ppthread_attr_t;__start_routine: __start_routine_t;__arg:pointer):longint;cdecl;external;
function pthread_self:pthread_t;cdecl;external;
function pthread_equal(__thread1:pthread_t; __thread2:pthread_t):longint;cdecl;external;
procedure pthread_exit(__retval:pointer);cdecl;external;
function pthread_join(__th:pthread_t; __thread_return:ppointer):longint;cdecl;external;
function pthread_detach(__th:pthread_t):longint;cdecl;external;
function pthread_attr_init(__attr:ppthread_attr_t):longint;cdecl;external;
function pthread_attr_destroy(__attr:ppthread_attr_t):longint;cdecl;external;
function pthread_attr_setdetachstate(__attr:ppthread_attr_t; __detachstate:longint):longint;cdecl;external;
function pthread_attr_getdetachstate(__attr:ppthread_attr_t; __detachstate:plongint):longint;cdecl;external;
function pthread_attr_setschedparam(__attr:ppthread_attr_t; __param:psched_param):longint;cdecl;external;
function pthread_attr_getschedparam(__attr:ppthread_attr_t; __param:psched_param):longint;cdecl;external;
function pthread_attr_setschedpolicy(__attr:ppthread_attr_t; __policy:longint):longint;cdecl;external;
function pthread_attr_getschedpolicy(__attr:ppthread_attr_t; __policy:plongint):longint;cdecl;external;
{$ifndef ANDROID}
function pthread_attr_setinheritsched(__attr:ppthread_attr_t; __inherit:longint):longint;cdecl;external;
function pthread_attr_getinheritsched(__attr:ppthread_attr_t; __inherit:plongint):longint;cdecl;external;
{$endif}
function pthread_attr_setstacksize(p: ppthread_attr_t;s:size_t):cint;cdecl;external;
function pthread_attr_getstacksize(p: ppthread_attr_t;s:psize_t):cint;cdecl;external;
function pthread_attr_setscope(__attr:ppthread_attr_t; __scope:longint):longint;cdecl;external;
function pthread_attr_getscope(__attr:ppthread_attr_t; __scope:plongint):longint;cdecl;external;
function pthread_setschedparam(__target_thread:pthread_t; __policy:longint; __param:psched_param):longint;cdecl;external;
function pthread_getschedparam(__target_thread:pthread_t; __policy:plongint; __param:psched_param):longint;cdecl;external;
function pthread_mutex_init(__mutex:ppthread_mutex_t; __mutex_attr:ppthread_mutexattr_t):longint;cdecl;external;
function pthread_mutex_destroy(__mutex:ppthread_mutex_t):longint;cdecl;external;
function pthread_mutex_trylock(__mutex:ppthread_mutex_t):longint;cdecl;external;
function pthread_mutex_lock(__mutex:ppthread_mutex_t):longint;cdecl;external;
function pthread_mutex_unlock(__mutex:ppthread_mutex_t):longint;cdecl;external;
function pthread_mutexattr_init(__attr:ppthread_mutexattr_t):longint;cdecl;external;
function pthread_mutexattr_destroy(__attr:ppthread_mutexattr_t):longint;cdecl;external;
{$ifndef ANDROID}
function pthread_mutexattr_setkind_np(__attr:ppthread_mutexattr_t; __kind:longint):longint;cdecl;external;
function pthread_mutexattr_getkind_np(__attr:ppthread_mutexattr_t; __kind:plongint):longint;cdecl;external;
{$endif}
function pthread_cond_init(__cond:ppthread_cond_t; __cond_attr:ppthread_condattr_t):longint;cdecl;external;
function pthread_cond_destroy(__cond:ppthread_cond_t):longint;cdecl;external;
function pthread_cond_signal(__cond:ppthread_cond_t):longint;cdecl;external;
function pthread_cond_broadcast(__cond:ppthread_cond_t):longint;cdecl;external;
function pthread_cond_wait(__cond:ppthread_cond_t; __mutex:ppthread_mutex_t):longint;cdecl;external;
function pthread_cond_timedwait(__cond:ppthread_cond_t; __mutex:ppthread_mutex_t; __abstime:ptimespec):longint;cdecl;external;
{$ifndef ANDROID}
function pthread_condattr_init(__attr:ppthread_condattr_t):longint;cdecl;external;
function pthread_condattr_destroy(__attr:ppthread_condattr_t):longint;cdecl;external;
function pthread_condattr_setclock(__attr:ppthread_condattr_t; __clock_id: longint):longint;cdecl;external;
{$endif}
function pthread_key_create(__key:ppthread_key_t; __destr_function:__destr_function_t):longint;cdecl;external;
function pthread_key_delete(__key:pthread_key_t):longint;cdecl;external;
function pthread_setspecific(__key:pthread_key_t; __pointer:pointer):longint;cdecl;external;
function pthread_getspecific(__key:pthread_key_t):pointer;cdecl;external;
{ function pthread_once(__once_control:ppthread_once_t; __init_routine:tprocedure ):longint;cdecl;external;}
{$ifndef ANDROID}
function pthread_setcancelstate(__state:longint; __oldstate:plongint):longint;cdecl;external;
function pthread_setcanceltype(__type:longint; __oldtype:plongint):longint;cdecl;external;
function pthread_cancel(__thread:pthread_t):longint;cdecl;external;
procedure pthread_testcancel;cdecl;external;
{$endif}
{ procedure _pthread_cleanup_push(__buffer:p_pthread_cleanup_buffer;__routine:t_pthread_cleanup_push_routine; __arg:pointer);cdecl;external; }
{ procedure _pthread_cleanup_push_defer(__buffer:p_pthread_cleanup_buffer;__routine:t_pthread_cleanup_push_defer_routine; __arg:pointer);cdecl;external;}
{ function pthread_sigmask(__how:longint; __newmask:plibc_sigset; __oldmask:plibc_sigset):longint;cdecl;external;}
function pthread_kill(__thread:pthread_t; __signo:longint):longint;cdecl;external;
{ function sigwait(__set:plibc_sigset; __sig:plongint):longint;cdecl;external;}
{$ifndef ANDROID}
function pthread_atfork(__prepare:tprocedure ; __parent:tprocedure ; __child:tprocedure ):longint;cdecl;external;
procedure pthread_kill_other_threads_np;cdecl;external;
{$endif}
function pthread_sigmask(how: cint; nset: plibc_sigset; oset: plibc_sigset): cint; cdecl; external;
function sem_init (__sem:Psem_t; __pshared:longint; __value:dword):longint;cdecl;external;
function sem_destroy (__sem:Psem_t):longint;cdecl;external;
function sem_close (__sem:Psem_t):longint;cdecl;external;
function sem_unlink (__name:Pchar):longint;cdecl;external;
function sem_wait (__sem:Psem_t):longint;cdecl;external;
function sem_timedwait (__sem:Psem_t; __abs_timeout:ptimespec):longint;cdecl;external;
function sem_trywait (__sem:Psem_t):longint;cdecl;external;
function sem_post (__sem:Psem_t):longint;cdecl;external;
function sem_getvalue (__sem:Psem_t; __sval:Plongint):longint;cdecl;external;
function pthread_mutexattr_settype (__attr: Ppthread_mutexattr_t; Kind:Integer): Integer; cdecl;external;
function pthread_setname_np(thread: pthread_t; name: PAnsiChar):cint;cdecl;external;
{$else}
Var
pthread_create : Function(__thread:ppthread_t; __attr:ppthread_attr_t;__start_routine: __start_routine_t;__arg:pointer):longint;cdecl;
pthread_self: Function : pthread_t;cdecl;
pthread_equal : Function(__thread1:pthread_t; __thread2:pthread_t):longint;cdecl;
pthread_exit : procedure (__retval:pointer);cdecl;
pthread_join : Function(__th:pthread_t; __thread_return:ppointer):longint;cdecl;
pthread_detach : Function(__th:pthread_t):longint;cdecl;
pthread_attr_init : Function(__attr:ppthread_attr_t):longint;cdecl;
pthread_attr_destroy : Function(__attr:ppthread_attr_t):longint;cdecl;
pthread_attr_setdetachstate : Function(__attr:ppthread_attr_t; __detachstate:longint):longint;cdecl;
pthread_attr_getdetachstate : Function(__attr:ppthread_attr_t; __detachstate:plongint):longint;cdecl;
pthread_attr_setschedparam : Function(__attr:ppthread_attr_t; __param:psched_param):longint;cdecl;
pthread_attr_getschedparam : Function(__attr:ppthread_attr_t; __param:psched_param):longint;cdecl;
pthread_attr_setschedpolicy : Function(__attr:ppthread_attr_t; __policy:longint):longint;cdecl;
pthread_attr_getschedpolicy : Function(__attr:ppthread_attr_t; __policy:plongint):longint;cdecl;
{$ifndef ANDROID}
pthread_attr_setinheritsched : Function(__attr:ppthread_attr_t; __inherit:longint):longint;cdecl;
pthread_attr_getinheritsched : Function(__attr:ppthread_attr_t; __inherit:plongint):longint;cdecl;
{$endif}
pthread_attr_setscope : Function(__attr:ppthread_attr_t; __scope:longint):longint;cdecl;
pthread_attr_getscope : Function(__attr:ppthread_attr_t; __scope:plongint):longint;cdecl;
pthread_setschedparam : Function(__target_thread:pthread_t; __policy:longint; __param:psched_param):longint;cdecl;
pthread_getschedparam : Function(__target_thread:pthread_t; __policy:plongint; __param:psched_param):longint;cdecl;
pthread_attr_setstacksize : Function(p: ppthread_attr_t;s:size_t):cint;cdecl;
pthread_mutex_init : Function(__mutex:ppthread_mutex_t; __mutex_attr:ppthread_mutexattr_t):longint;cdecl;
pthread_mutex_destroy : Function(__mutex:ppthread_mutex_t):longint;cdecl;
pthread_mutex_trylock : Function(__mutex:ppthread_mutex_t):longint;cdecl;
pthread_mutex_lock : Function(__mutex:ppthread_mutex_t):longint;cdecl;
pthread_mutex_unlock : Function(__mutex:ppthread_mutex_t):longint;cdecl;
pthread_mutexattr_init : Function(__attr:ppthread_mutexattr_t):longint;cdecl;
pthread_mutexattr_destroy : Function(__attr:ppthread_mutexattr_t):longint;cdecl;
{$ifndef ANDROID}
pthread_mutexattr_setkind_np : Function(__attr:ppthread_mutexattr_t; __kind:longint):longint;cdecl;
pthread_mutexattr_getkind_np : Function(__attr:ppthread_mutexattr_t; __kind:plongint):longint;cdecl;
{$endif}
pthread_cond_init : Function(__cond:ppthread_cond_t; __cond_attr:ppthread_condattr_t):longint;cdecl;
pthread_cond_destroy : Function(__cond:ppthread_cond_t):longint;cdecl;
pthread_cond_signal : Function(__cond:ppthread_cond_t):longint;cdecl;
pthread_cond_broadcast : Function(__cond:ppthread_cond_t):longint;cdecl;
pthread_cond_wait : Function(__cond:ppthread_cond_t; __mutex:ppthread_mutex_t):longint;cdecl;
pthread_cond_timedwait : Function(__cond:ppthread_cond_t; __mutex:ppthread_mutex_t; __abstime:ptimespec):longint;cdecl;
{$ifndef ANDROID}
pthread_condattr_init : Function(__attr:ppthread_condattr_t):longint;cdecl;
pthread_condattr_destroy : Function(__attr:ppthread_condattr_t):longint;cdecl;
pthread_condattr_setclock: Function(__attr:ppthread_condattr_t; __clock_id: longint):longint;cdecl;
{$endif}
pthread_key_create : Function(__key:ppthread_key_t; __destr_function:__destr_function_t):longint;cdecl;
pthread_key_delete : Function(__key:pthread_key_t):longint;cdecl;
pthread_setspecific : Function(__key:pthread_key_t; __pointer:pointer):longint;cdecl;
pthread_getspecific : Function(__key:pthread_key_t):pointer;cdecl;
{ pthread_once : Function(__once_control:ppthread_once_t; __init_routine:tprocedure ):longint;cdecl;}
{$ifndef ANDROID}
pthread_setcancelstate : Function(__state:longint; __oldstate:plongint):longint;cdecl;
pthread_setcanceltype : Function(__type:longint; __oldtype:plongint):longint;cdecl;
pthread_cancel : Function(__thread:pthread_t):longint;cdecl;
pthread_testcancel : Procedure ;cdecl;
{$endif}
{ _pthread_cleanup_push : procedure (__buffer:p_pthread_cleanup_buffer;__routine:t_pthread_cleanup_push_routine; __arg:pointer);cdecl;}
{ _pthread_cleanup_push_defer : procedure (__buffer:p_pthread_cleanup_buffer;__routine:t_pthread_cleanup_push_defer_routine; __arg:pointer);cdecl;}
{ pthread_sigmask : Function(__how:longint; __newmask:plibc_sigset; __oldmask:plibc_sigset):longint;cdecl;}
pthread_kill : Function(__thread:pthread_t; __signo:longint):longint;cdecl;
{ sigwait : Function(__set:plibc_sigset; __sig:plongint):longint;cdecl;}
{$ifndef ANDROID}
pthread_atfork : Function(__prepare:tprocedure ; __parent:tprocedure ; __child:tprocedure ):longint;cdecl;
pthread_kill_other_threads_np : procedure;cdecl;
{$endif}
pthread_sigmask: Function(how: cint; nset: plibc_sigset; oset: plibc_sigset): cint;cdecl;
sem_init : function (__sem:Psem_t; __pshared:longint; __value:dword):longint;cdecl;
sem_destroy : function (__sem:Psem_t):longint;cdecl;
sem_close : function (__sem:Psem_t):longint;cdecl;
sem_unlink : function (__name:Pchar):longint;cdecl;
sem_wait : function (__sem:Psem_t):longint;cdecl;
sem_timedwait: function (__sem:Psem_t; __abs_timeout:ptimespec):longint;cdecl;
sem_trywait : function (__sem:Psem_t):longint;cdecl;
sem_post : function (__sem:Psem_t):longint;cdecl;
sem_getvalue : function (__sem:Psem_t; __sval:Plongint):longint;cdecl;
pthread_mutexattr_settype : function(__attr: Ppthread_mutexattr_t; Kind:Integer): Integer; cdecl;
pthread_setname_np : function(thread: pthread_t; name: PAnsiChar):cint;cdecl;
Var
PthreadDLL : Pointer;
Function LoadPthreads : Boolean;
begin
{$ifndef ANDROID}
PThreadDLL:=DlOpen('libpthread.so.0',RTLD_LAZY);
{$else}
PThreadDLL := dlopen('libc.so', RTLD_LAZY );
{$endif}
Result:=PThreadDLL<>Nil;
If Not Result then
exit;
Pointer(pthread_create) := dlsym(PthreadDLL,'pthread_create');
Pointer(pthread_self) := dlsym(PthreadDLL,'pthread_self');
Pointer(pthread_equal) := dlsym(PthreadDLL,'pthread_equal');
Pointer(pthread_exit) := dlsym(PthreadDLL,'pthread_exit');
Pointer(pthread_join) := dlsym(PthreadDLL,'pthread_join');
Pointer(pthread_detach) := dlsym(PthreadDLL,'pthread_detach');
Pointer(pthread_attr_init) := dlsym(PthreadDLL,'pthread_attr_init');
Pointer(pthread_attr_destroy) := dlsym(PthreadDLL,'pthread_attr_destroy');
Pointer(pthread_attr_setdetachstate) := dlsym(PthreadDLL,'pthread_attr_setdetachstate');
Pointer(pthread_attr_getdetachstate) := dlsym(PthreadDLL,'pthread_attr_getdetachstate');
Pointer(pthread_attr_setschedparam) := dlsym(PthreadDLL,'pthread_attr_setschedparam');
Pointer(pthread_attr_getschedparam) := dlsym(PthreadDLL,'pthread_attr_getschedparam');
Pointer(pthread_attr_setschedpolicy) := dlsym(PthreadDLL,'pthread_attr_setschedpolicy');
Pointer(pthread_attr_getschedpolicy) := dlsym(PthreadDLL,'pthread_attr_getschedpolicy');
{$ifndef ANDROID}
Pointer(pthread_attr_setinheritsched) := dlsym(PthreadDLL,'pthread_attr_setinheritsched');
Pointer(pthread_attr_getinheritsched) := dlsym(PthreadDLL,'pthread_attr_getinheritsched');
{$endif}
Pointer(pthread_attr_setscope) := dlsym(PthreadDLL,'pthread_attr_setscope');
Pointer(pthread_attr_getscope) := dlsym(PthreadDLL,'pthread_attr_getscope');
Pointer(pthread_attr_setstacksize) := dlsym(PthreadDLL,'pthread_attr_setstacksize');
Pointer(pthread_setschedparam) := dlsym(PthreadDLL,'pthread_setschedparam');
Pointer(pthread_getschedparam) := dlsym(PthreadDLL,'pthread_getschedparam');
Pointer(pthread_mutex_init) := dlsym(PthreadDLL,'pthread_mutex_init');
Pointer(pthread_mutex_destroy) := dlsym(PthreadDLL,'pthread_mutex_destroy');
Pointer(pthread_mutex_trylock) := dlsym(PthreadDLL,'pthread_mutex_trylock');
Pointer(pthread_mutex_lock) := dlsym(PthreadDLL,'pthread_mutex_lock');
Pointer(pthread_mutex_unlock) := dlsym(PthreadDLL,'pthread_mutex_unlock');
Pointer(pthread_mutexattr_init) := dlsym(PthreadDLL,'pthread_mutexattr_init');
Pointer(pthread_mutexattr_destroy) := dlsym(PthreadDLL,'pthread_mutexattr_destroy');
{$ifndef ANDROID}
Pointer(pthread_mutexattr_setkind_np) := dlsym(PthreadDLL,'pthread_mutexattr_setkind_np');
Pointer(pthread_mutexattr_getkind_np) := dlsym(PthreadDLL,'pthread_mutexattr_getkind_np');
{$endif}
Pointer(pthread_cond_init) := dlsym(PthreadDLL,'pthread_cond_init');
Pointer(pthread_cond_destroy) := dlsym(PthreadDLL,'pthread_cond_destroy');
Pointer(pthread_cond_signal) := dlsym(PthreadDLL,'pthread_cond_signal');
Pointer(pthread_cond_broadcast) := dlsym(PthreadDLL,'pthread_cond_broadcast');
Pointer(pthread_cond_wait) := dlsym(PthreadDLL,'pthread_cond_wait');
Pointer(pthread_cond_timedwait) := dlsym(PthreadDLL,'pthread_cond_timedwait');
{$ifndef ANDROID}
Pointer(pthread_condattr_init) := dlsym(PthreadDLL,'pthread_condattr_init');
Pointer(pthread_condattr_destroy) := dlsym(PthreadDLL,'pthread_condattr_destroy');
Pointer(pthread_condattr_setclock) := dlsym(PthreadDLL,'pthread_condattr_setclock');
{$endif}
Pointer(pthread_key_create) := dlsym(PthreadDLL,'pthread_key_create');
Pointer(pthread_key_delete) := dlsym(PthreadDLL,'pthread_key_delete');
Pointer(pthread_setspecific) := dlsym(PthreadDLL,'pthread_setspecific');
Pointer(pthread_getspecific) := dlsym(PthreadDLL,'pthread_getspecific');
{ Pointer(pthread_once) := dlsym(PthreadDLL,'pthread_once');}
{$ifndef ANDROID}
Pointer(pthread_setcancelstate) := dlsym(PthreadDLL,'pthread_setcancelstate');
Pointer(pthread_setcanceltype) := dlsym(PthreadDLL,'pthread_setcanceltype');
Pointer(pthread_cancel) := dlsym(PthreadDLL,'pthread_cancel');
Pointer(pthread_testcancel) := dlsym(PthreadDLL,'pthread_testcancel');
{$endif}
{ Pointer(_pthread_cleanup_push) := dlsym(PthreadDLL,'_pthread_cleanup_push');}
{ Pointer(_pthread_cleanup_push_defer) := dlsym(PthreadDLL,'_pthread_cleanup_push_defer');}
{ Pointer(pthread_sigmask) := dlsym(PthreadDLL,'pthread_sigmask');}
Pointer(pthread_kill) := dlsym(PthreadDLL,'pthread_kill');
{$ifndef ANDROID}
Pointer(pthread_atfork):= dlsym(PthreadDLL,'pthread_atfork');
Pointer(pthread_kill_other_threads_np) := dlsym(PthreadDLL,'pthread_kill_other_threads_np');
{$endif}
Pointer(pthread_sigmask) := dlsym(PthreadDLL,'pthread_sigmask');
Pointer(sem_init ) := dlsym(PthreadDLL,'sem_init');
Pointer(sem_destroy ) := dlsym(PthreadDLL,'sem_destroy');
Pointer(sem_close ) := dlsym(PthreadDLL,'sem_close');
Pointer(sem_unlink ) := dlsym(PthreadDLL,'sem_unlink');
Pointer(sem_wait ) := dlsym(PthreadDLL,'sem_wait');
Pointer(sem_timedwait) := dlsym(PthreadDLL,'sem_timedwait');
Pointer(sem_trywait ) := dlsym(PthreadDLL,'sem_trywait');
Pointer(sem_post ) := dlsym(PthreadDLL,'sem_post');
Pointer(sem_getvalue ) := dlsym(PthreadDLL,'sem_getvalue');
Pointer(pthread_mutexattr_settype) := dlsym(PthreadDLL,'pthread_mutexattr_settype');
Pointer(pthread_setname_np) := dlsym(PthreadDLL,'pthread_setname_np');
end;
Function UnLoadPthreads : Boolean;
begin
Result:=dlclose(PThreadDLL)=0;
end;
{$endif}
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