/* Threads compatibility routines for libgcc2 and libobjc. */
|
/* Threads compatibility routines for libgcc2 and libobjc. */
|
/* Compile this one with gcc. */
|
/* Compile this one with gcc. */
|
/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
|
/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
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
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 2, or (at your option) any later
|
Software Foundation; either version 2, or (at your option) any later
|
version.
|
version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
for more details.
|
for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING. If not, write to the Free
|
along with GCC; see the file COPYING. If not, write to the Free
|
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
|
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
|
02110-1301, USA. */
|
02110-1301, USA. */
|
|
|
/* As a special exception, if you link this library with other files,
|
/* As a special exception, if you link this library with other files,
|
some of which are compiled with GCC, to produce an executable,
|
some of which are compiled with GCC, to produce an executable,
|
this library does not by itself cause the resulting executable
|
this library does not by itself cause the resulting executable
|
to be covered by the GNU General Public License.
|
to be covered by the GNU General Public License.
|
This exception does not however invalidate any other reasons why
|
This exception does not however invalidate any other reasons why
|
the executable file might be covered by the GNU General Public License. */
|
the executable file might be covered by the GNU General Public License. */
|
|
|
#ifndef GCC_GTHR_POSIX_H
|
#ifndef GCC_GTHR_POSIX_H
|
#define GCC_GTHR_POSIX_H
|
#define GCC_GTHR_POSIX_H
|
|
|
/* POSIX threads specific definitions.
|
/* POSIX threads specific definitions.
|
Easy, since the interface is just one-to-one mapping. */
|
Easy, since the interface is just one-to-one mapping. */
|
|
|
#define __GTHREADS 1
|
#define __GTHREADS 1
|
|
|
/* Some implementations of <pthread.h> require this to be defined. */
|
/* Some implementations of <pthread.h> require this to be defined. */
|
#ifndef _REENTRANT
|
#ifndef _REENTRANT
|
#define _REENTRANT 1
|
#define _REENTRANT 1
|
#endif
|
#endif
|
|
|
#include <pthread.h>
|
#include <pthread.h>
|
#include <unistd.h>
|
#include <unistd.h>
|
|
|
typedef pthread_key_t __gthread_key_t;
|
typedef pthread_key_t __gthread_key_t;
|
typedef pthread_once_t __gthread_once_t;
|
typedef pthread_once_t __gthread_once_t;
|
typedef pthread_mutex_t __gthread_mutex_t;
|
typedef pthread_mutex_t __gthread_mutex_t;
|
|
|
typedef struct {
|
typedef struct {
|
long depth;
|
long depth;
|
pthread_t owner;
|
pthread_t owner;
|
pthread_mutex_t actual;
|
pthread_mutex_t actual;
|
} __gthread_recursive_mutex_t;
|
} __gthread_recursive_mutex_t;
|
|
|
#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
|
#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
|
#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
|
#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
|
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
|
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
|
|
|
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
|
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
|
# define __gthrw(name) \
|
# define __gthrw(name) \
|
static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
|
static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
|
# define __gthrw_(name) __gthrw_ ## name
|
# define __gthrw_(name) __gthrw_ ## name
|
#else
|
#else
|
# define __gthrw(name)
|
# define __gthrw(name)
|
# define __gthrw_(name) name
|
# define __gthrw_(name) name
|
#endif
|
#endif
|
|
|
__gthrw(pthread_once)
|
__gthrw(pthread_once)
|
__gthrw(pthread_key_create)
|
__gthrw(pthread_key_create)
|
__gthrw(pthread_key_delete)
|
__gthrw(pthread_key_delete)
|
__gthrw(pthread_getspecific)
|
__gthrw(pthread_getspecific)
|
__gthrw(pthread_setspecific)
|
__gthrw(pthread_setspecific)
|
__gthrw(pthread_create)
|
__gthrw(pthread_create)
|
__gthrw(pthread_cancel)
|
__gthrw(pthread_cancel)
|
__gthrw(pthread_self)
|
__gthrw(pthread_self)
|
|
|
__gthrw(pthread_mutex_lock)
|
__gthrw(pthread_mutex_lock)
|
__gthrw(pthread_mutex_trylock)
|
__gthrw(pthread_mutex_trylock)
|
__gthrw(pthread_mutex_unlock)
|
__gthrw(pthread_mutex_unlock)
|
__gthrw(pthread_mutexattr_init)
|
__gthrw(pthread_mutexattr_init)
|
__gthrw(pthread_mutexattr_destroy)
|
__gthrw(pthread_mutexattr_destroy)
|
|
|
__gthrw(pthread_mutex_init)
|
__gthrw(pthread_mutex_init)
|
|
|
#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
|
#if defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)
|
/* Objective-C. */
|
/* Objective-C. */
|
__gthrw(pthread_cond_broadcast)
|
__gthrw(pthread_cond_broadcast)
|
__gthrw(pthread_cond_destroy)
|
__gthrw(pthread_cond_destroy)
|
__gthrw(pthread_cond_init)
|
__gthrw(pthread_cond_init)
|
__gthrw(pthread_cond_signal)
|
__gthrw(pthread_cond_signal)
|
__gthrw(pthread_cond_wait)
|
__gthrw(pthread_cond_wait)
|
__gthrw(pthread_exit)
|
__gthrw(pthread_exit)
|
__gthrw(pthread_mutex_destroy)
|
__gthrw(pthread_mutex_destroy)
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
__gthrw(sched_get_priority_max)
|
__gthrw(sched_get_priority_max)
|
__gthrw(sched_get_priority_min)
|
__gthrw(sched_get_priority_min)
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_PRIORITY_SCHEDULING */
|
__gthrw(sched_yield)
|
__gthrw(sched_yield)
|
__gthrw(pthread_attr_destroy)
|
__gthrw(pthread_attr_destroy)
|
__gthrw(pthread_attr_init)
|
__gthrw(pthread_attr_init)
|
__gthrw(pthread_attr_setdetachstate)
|
__gthrw(pthread_attr_setdetachstate)
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
__gthrw(pthread_getschedparam)
|
__gthrw(pthread_getschedparam)
|
__gthrw(pthread_setschedparam)
|
__gthrw(pthread_setschedparam)
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _LIBOBJC || _LIBOBJC_WEAK */
|
#endif /* _LIBOBJC || _LIBOBJC_WEAK */
|
|
|
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
|
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
|
|
|
/* On Solaris 2.6 up to 9, the libc exposes a POSIX threads interface even if
|
/* 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
|
-pthreads is not specified. The functions are dummies and most return an
|
error value. However pthread_once returns 0 without invoking the routine
|
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
|
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
|
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
|
we need to play the usual game with weak symbols. On Solaris 10 and up, a
|
working interface is always exposed. */
|
working interface is always exposed. */
|
|
|
#if defined(__sun) && defined(__svr4__)
|
#if defined(__sun) && defined(__svr4__)
|
|
|
static volatile int __gthread_active = -1;
|
static volatile int __gthread_active = -1;
|
|
|
static void
|
static void
|
__gthread_trigger (void)
|
__gthread_trigger (void)
|
{
|
{
|
__gthread_active = 1;
|
__gthread_active = 1;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_active_p (void)
|
__gthread_active_p (void)
|
{
|
{
|
static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
|
static pthread_mutex_t __gthread_active_mutex = PTHREAD_MUTEX_INITIALIZER;
|
static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
|
static pthread_once_t __gthread_active_once = PTHREAD_ONCE_INIT;
|
|
|
/* Avoid reading __gthread_active twice on the main code path. */
|
/* Avoid reading __gthread_active twice on the main code path. */
|
int __gthread_active_latest_value = __gthread_active;
|
int __gthread_active_latest_value = __gthread_active;
|
|
|
/* This test is not protected to avoid taking a lock on the main code
|
/* 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
|
path so every update of __gthread_active in a threaded program must
|
be atomic with regard to the result of the test. */
|
be atomic with regard to the result of the test. */
|
if (__builtin_expect (__gthread_active_latest_value < 0, 0))
|
if (__builtin_expect (__gthread_active_latest_value < 0, 0))
|
{
|
{
|
if (__gthrw_(pthread_once))
|
if (__gthrw_(pthread_once))
|
{
|
{
|
/* If this really is a threaded program, then we must ensure that
|
/* If this really is a threaded program, then we must ensure that
|
__gthread_active has been set to 1 before exiting this block. */
|
__gthread_active has been set to 1 before exiting this block. */
|
__gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
|
__gthrw_(pthread_mutex_lock) (&__gthread_active_mutex);
|
__gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
|
__gthrw_(pthread_once) (&__gthread_active_once, __gthread_trigger);
|
__gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
|
__gthrw_(pthread_mutex_unlock) (&__gthread_active_mutex);
|
}
|
}
|
|
|
/* Make sure we'll never enter this block again. */
|
/* Make sure we'll never enter this block again. */
|
if (__gthread_active < 0)
|
if (__gthread_active < 0)
|
__gthread_active = 0;
|
__gthread_active = 0;
|
|
|
__gthread_active_latest_value = __gthread_active;
|
__gthread_active_latest_value = __gthread_active;
|
}
|
}
|
|
|
return __gthread_active_latest_value != 0;
|
return __gthread_active_latest_value != 0;
|
}
|
}
|
|
|
#else /* not Solaris */
|
#else /* not Solaris */
|
|
|
static inline int
|
static inline int
|
__gthread_active_p (void)
|
__gthread_active_p (void)
|
{
|
{
|
static void *const __gthread_active_ptr
|
static void *const __gthread_active_ptr
|
= __extension__ (void *) &__gthrw_(pthread_cancel);
|
= __extension__ (void *) &__gthrw_(pthread_cancel);
|
return __gthread_active_ptr != 0;
|
return __gthread_active_ptr != 0;
|
}
|
}
|
|
|
#endif /* Solaris */
|
#endif /* Solaris */
|
|
|
#else /* not SUPPORTS_WEAK */
|
#else /* not SUPPORTS_WEAK */
|
|
|
static inline int
|
static inline int
|
__gthread_active_p (void)
|
__gthread_active_p (void)
|
{
|
{
|
return 1;
|
return 1;
|
}
|
}
|
|
|
#endif /* SUPPORTS_WEAK */
|
#endif /* SUPPORTS_WEAK */
|
|
|
#ifdef _LIBOBJC
|
#ifdef _LIBOBJC
|
|
|
/* This is the config.h file in libobjc/ */
|
/* This is the config.h file in libobjc/ */
|
#include <config.h>
|
#include <config.h>
|
|
|
#ifdef HAVE_SCHED_H
|
#ifdef HAVE_SCHED_H
|
# include <sched.h>
|
# include <sched.h>
|
#endif
|
#endif
|
|
|
/* Key structure for maintaining thread specific storage */
|
/* Key structure for maintaining thread specific storage */
|
static pthread_key_t _objc_thread_storage;
|
static pthread_key_t _objc_thread_storage;
|
static pthread_attr_t _objc_thread_attribs;
|
static pthread_attr_t _objc_thread_attribs;
|
|
|
/* Thread local storage for a single thread */
|
/* Thread local storage for a single thread */
|
static void *thread_local_storage = NULL;
|
static void *thread_local_storage = NULL;
|
|
|
/* Backend initialization functions */
|
/* Backend initialization functions */
|
|
|
/* Initialize the threads subsystem. */
|
/* Initialize the threads subsystem. */
|
static inline int
|
static inline int
|
__gthread_objc_init_thread_system (void)
|
__gthread_objc_init_thread_system (void)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
/* Initialize the thread storage key. */
|
/* Initialize the thread storage key. */
|
if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
|
if (__gthrw_(pthread_key_create) (&_objc_thread_storage, NULL) == 0)
|
{
|
{
|
/* The normal default detach state for threads is
|
/* The normal default detach state for threads is
|
* PTHREAD_CREATE_JOINABLE which causes threads to not die
|
* PTHREAD_CREATE_JOINABLE which causes threads to not die
|
* when you think they should. */
|
* when you think they should. */
|
if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
|
if (__gthrw_(pthread_attr_init) (&_objc_thread_attribs) == 0
|
&& __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
|
&& __gthrw_(pthread_attr_setdetachstate) (&_objc_thread_attribs,
|
PTHREAD_CREATE_DETACHED) == 0)
|
PTHREAD_CREATE_DETACHED) == 0)
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* Close the threads subsystem. */
|
/* Close the threads subsystem. */
|
static inline int
|
static inline int
|
__gthread_objc_close_thread_system (void)
|
__gthread_objc_close_thread_system (void)
|
{
|
{
|
if (__gthread_active_p ()
|
if (__gthread_active_p ()
|
&& __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
|
&& __gthrw_(pthread_key_delete) (_objc_thread_storage) == 0
|
&& __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
|
&& __gthrw_(pthread_attr_destroy) (&_objc_thread_attribs) == 0)
|
return 0;
|
return 0;
|
|
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* Backend thread functions */
|
/* Backend thread functions */
|
|
|
/* Create a new thread of execution. */
|
/* Create a new thread of execution. */
|
static inline objc_thread_t
|
static inline objc_thread_t
|
__gthread_objc_thread_detach (void (*func)(void *), void *arg)
|
__gthread_objc_thread_detach (void (*func)(void *), void *arg)
|
{
|
{
|
objc_thread_t thread_id;
|
objc_thread_t thread_id;
|
pthread_t new_thread_handle;
|
pthread_t new_thread_handle;
|
|
|
if (!__gthread_active_p ())
|
if (!__gthread_active_p ())
|
return NULL;
|
return NULL;
|
|
|
if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg)))
|
if (!(__gthrw_(pthread_create) (&new_thread_handle, NULL, (void *) func, arg)))
|
thread_id = (objc_thread_t) new_thread_handle;
|
thread_id = (objc_thread_t) new_thread_handle;
|
else
|
else
|
thread_id = NULL;
|
thread_id = NULL;
|
|
|
return thread_id;
|
return thread_id;
|
}
|
}
|
|
|
/* Set the current thread's priority. */
|
/* Set the current thread's priority. */
|
static inline int
|
static inline int
|
__gthread_objc_thread_set_priority (int priority)
|
__gthread_objc_thread_set_priority (int priority)
|
{
|
{
|
if (!__gthread_active_p ())
|
if (!__gthread_active_p ())
|
return -1;
|
return -1;
|
else
|
else
|
{
|
{
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
pthread_t thread_id = __gthrw_(pthread_self) ();
|
pthread_t thread_id = __gthrw_(pthread_self) ();
|
int policy;
|
int policy;
|
struct sched_param params;
|
struct sched_param params;
|
int priority_min, priority_max;
|
int priority_min, priority_max;
|
|
|
if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0)
|
if (__gthrw_(pthread_getschedparam) (thread_id, &policy, ¶ms) == 0)
|
{
|
{
|
if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
|
if ((priority_max = __gthrw_(sched_get_priority_max) (policy)) == -1)
|
return -1;
|
return -1;
|
|
|
if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
|
if ((priority_min = __gthrw_(sched_get_priority_min) (policy)) == -1)
|
return -1;
|
return -1;
|
|
|
if (priority > priority_max)
|
if (priority > priority_max)
|
priority = priority_max;
|
priority = priority_max;
|
else if (priority < priority_min)
|
else if (priority < priority_min)
|
priority = priority_min;
|
priority = priority_min;
|
params.sched_priority = priority;
|
params.sched_priority = priority;
|
|
|
/*
|
/*
|
* The solaris 7 and several other man pages incorrectly state that
|
* The solaris 7 and several other man pages incorrectly state that
|
* this should be a pointer to policy but pthread.h is universally
|
* this should be a pointer to policy but pthread.h is universally
|
* at odds with this.
|
* at odds with this.
|
*/
|
*/
|
if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0)
|
if (__gthrw_(pthread_setschedparam) (thread_id, policy, ¶ms) == 0)
|
return 0;
|
return 0;
|
}
|
}
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_PRIORITY_SCHEDULING */
|
return -1;
|
return -1;
|
}
|
}
|
}
|
}
|
|
|
/* Return the current thread's priority. */
|
/* Return the current thread's priority. */
|
static inline int
|
static inline int
|
__gthread_objc_thread_get_priority (void)
|
__gthread_objc_thread_get_priority (void)
|
{
|
{
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
#ifdef _POSIX_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
int policy;
|
int policy;
|
struct sched_param params;
|
struct sched_param params;
|
|
|
if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0)
|
if (__gthrw_(pthread_getschedparam) (__gthrw_(pthread_self) (), &policy, ¶ms) == 0)
|
return params.sched_priority;
|
return params.sched_priority;
|
else
|
else
|
return -1;
|
return -1;
|
}
|
}
|
else
|
else
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_PRIORITY_SCHEDULING */
|
#endif /* _POSIX_PRIORITY_SCHEDULING */
|
return OBJC_THREAD_INTERACTIVE_PRIORITY;
|
return OBJC_THREAD_INTERACTIVE_PRIORITY;
|
}
|
}
|
|
|
/* Yield our process time to another thread. */
|
/* Yield our process time to another thread. */
|
static inline void
|
static inline void
|
__gthread_objc_thread_yield (void)
|
__gthread_objc_thread_yield (void)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
__gthrw_(sched_yield) ();
|
__gthrw_(sched_yield) ();
|
}
|
}
|
|
|
/* Terminate the current thread. */
|
/* Terminate the current thread. */
|
static inline int
|
static inline int
|
__gthread_objc_thread_exit (void)
|
__gthread_objc_thread_exit (void)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
/* exit the thread */
|
/* exit the thread */
|
__gthrw_(pthread_exit) (&__objc_thread_exit_status);
|
__gthrw_(pthread_exit) (&__objc_thread_exit_status);
|
|
|
/* Failed if we reached here */
|
/* Failed if we reached here */
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* Returns an integer value which uniquely describes a thread. */
|
/* Returns an integer value which uniquely describes a thread. */
|
static inline objc_thread_t
|
static inline objc_thread_t
|
__gthread_objc_thread_id (void)
|
__gthread_objc_thread_id (void)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return (objc_thread_t) __gthrw_(pthread_self) ();
|
return (objc_thread_t) __gthrw_(pthread_self) ();
|
else
|
else
|
return (objc_thread_t) 1;
|
return (objc_thread_t) 1;
|
}
|
}
|
|
|
/* Sets the thread's local storage pointer. */
|
/* Sets the thread's local storage pointer. */
|
static inline int
|
static inline int
|
__gthread_objc_thread_set_data (void *value)
|
__gthread_objc_thread_set_data (void *value)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
|
return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
|
else
|
else
|
{
|
{
|
thread_local_storage = value;
|
thread_local_storage = value;
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Returns the thread's local storage pointer. */
|
/* Returns the thread's local storage pointer. */
|
static inline void *
|
static inline void *
|
__gthread_objc_thread_get_data (void)
|
__gthread_objc_thread_get_data (void)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_getspecific) (_objc_thread_storage);
|
return __gthrw_(pthread_getspecific) (_objc_thread_storage);
|
else
|
else
|
return thread_local_storage;
|
return thread_local_storage;
|
}
|
}
|
|
|
/* Backend mutex functions */
|
/* Backend mutex functions */
|
|
|
/* Allocate a mutex. */
|
/* Allocate a mutex. */
|
static inline int
|
static inline int
|
__gthread_objc_mutex_allocate (objc_mutex_t mutex)
|
__gthread_objc_mutex_allocate (objc_mutex_t mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
|
mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
|
|
|
if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
|
if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, NULL))
|
{
|
{
|
objc_free (mutex->backend);
|
objc_free (mutex->backend);
|
mutex->backend = NULL;
|
mutex->backend = NULL;
|
return -1;
|
return -1;
|
}
|
}
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Deallocate a mutex. */
|
/* Deallocate a mutex. */
|
static inline int
|
static inline int
|
__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
|
__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
int count;
|
int count;
|
|
|
/*
|
/*
|
* Posix Threads specifically require that the thread be unlocked
|
* Posix Threads specifically require that the thread be unlocked
|
* for __gthrw_(pthread_mutex_destroy) to work.
|
* for __gthrw_(pthread_mutex_destroy) to work.
|
*/
|
*/
|
|
|
do
|
do
|
{
|
{
|
count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
|
count = __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
|
if (count < 0)
|
if (count < 0)
|
return -1;
|
return -1;
|
}
|
}
|
while (count);
|
while (count);
|
|
|
if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
|
if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
|
return -1;
|
return -1;
|
|
|
objc_free (mutex->backend);
|
objc_free (mutex->backend);
|
mutex->backend = NULL;
|
mutex->backend = NULL;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Grab a lock on a mutex. */
|
/* Grab a lock on a mutex. */
|
static inline int
|
static inline int
|
__gthread_objc_mutex_lock (objc_mutex_t mutex)
|
__gthread_objc_mutex_lock (objc_mutex_t mutex)
|
{
|
{
|
if (__gthread_active_p ()
|
if (__gthread_active_p ()
|
&& __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
|
&& __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend) != 0)
|
{
|
{
|
return -1;
|
return -1;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Try to grab a lock on a mutex. */
|
/* Try to grab a lock on a mutex. */
|
static inline int
|
static inline int
|
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
|
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
|
{
|
{
|
if (__gthread_active_p ()
|
if (__gthread_active_p ()
|
&& __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
|
&& __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 0)
|
{
|
{
|
return -1;
|
return -1;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Unlock the mutex */
|
/* Unlock the mutex */
|
static inline int
|
static inline int
|
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
|
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
|
{
|
{
|
if (__gthread_active_p ()
|
if (__gthread_active_p ()
|
&& __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
|
&& __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend) != 0)
|
{
|
{
|
return -1;
|
return -1;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Backend condition mutex functions */
|
/* Backend condition mutex functions */
|
|
|
/* Allocate a condition. */
|
/* Allocate a condition. */
|
static inline int
|
static inline int
|
__gthread_objc_condition_allocate (objc_condition_t condition)
|
__gthread_objc_condition_allocate (objc_condition_t condition)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
condition->backend = objc_malloc (sizeof (pthread_cond_t));
|
condition->backend = objc_malloc (sizeof (pthread_cond_t));
|
|
|
if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
|
if (__gthrw_(pthread_cond_init) ((pthread_cond_t *) condition->backend, NULL))
|
{
|
{
|
objc_free (condition->backend);
|
objc_free (condition->backend);
|
condition->backend = NULL;
|
condition->backend = NULL;
|
return -1;
|
return -1;
|
}
|
}
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Deallocate a condition. */
|
/* Deallocate a condition. */
|
static inline int
|
static inline int
|
__gthread_objc_condition_deallocate (objc_condition_t condition)
|
__gthread_objc_condition_deallocate (objc_condition_t condition)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
|
if (__gthrw_(pthread_cond_destroy) ((pthread_cond_t *) condition->backend))
|
return -1;
|
return -1;
|
|
|
objc_free (condition->backend);
|
objc_free (condition->backend);
|
condition->backend = NULL;
|
condition->backend = NULL;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Wait on the condition */
|
/* Wait on the condition */
|
static inline int
|
static inline int
|
__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
|
__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
|
return __gthrw_(pthread_cond_wait) ((pthread_cond_t *) condition->backend,
|
(pthread_mutex_t *) mutex->backend);
|
(pthread_mutex_t *) mutex->backend);
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Wake up all threads waiting on this condition. */
|
/* Wake up all threads waiting on this condition. */
|
static inline int
|
static inline int
|
__gthread_objc_condition_broadcast (objc_condition_t condition)
|
__gthread_objc_condition_broadcast (objc_condition_t condition)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
|
return __gthrw_(pthread_cond_broadcast) ((pthread_cond_t *) condition->backend);
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Wake up one thread waiting on this condition. */
|
/* Wake up one thread waiting on this condition. */
|
static inline int
|
static inline int
|
__gthread_objc_condition_signal (objc_condition_t condition)
|
__gthread_objc_condition_signal (objc_condition_t condition)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
|
return __gthrw_(pthread_cond_signal) ((pthread_cond_t *) condition->backend);
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#else /* _LIBOBJC */
|
#else /* _LIBOBJC */
|
|
|
static inline int
|
static inline int
|
__gthread_once (__gthread_once_t *once, void (*func) (void))
|
__gthread_once (__gthread_once_t *once, void (*func) (void))
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_once) (once, func);
|
return __gthrw_(pthread_once) (once, func);
|
else
|
else
|
return -1;
|
return -1;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
|
__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
|
{
|
{
|
return __gthrw_(pthread_key_create) (key, dtor);
|
return __gthrw_(pthread_key_create) (key, dtor);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_key_delete (__gthread_key_t key)
|
__gthread_key_delete (__gthread_key_t key)
|
{
|
{
|
return __gthrw_(pthread_key_delete) (key);
|
return __gthrw_(pthread_key_delete) (key);
|
}
|
}
|
|
|
static inline void *
|
static inline void *
|
__gthread_getspecific (__gthread_key_t key)
|
__gthread_getspecific (__gthread_key_t key)
|
{
|
{
|
return __gthrw_(pthread_getspecific) (key);
|
return __gthrw_(pthread_getspecific) (key);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_setspecific (__gthread_key_t key, const void *ptr)
|
__gthread_setspecific (__gthread_key_t key, const void *ptr)
|
{
|
{
|
return __gthrw_(pthread_setspecific) (key, ptr);
|
return __gthrw_(pthread_setspecific) (key, ptr);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_lock (__gthread_mutex_t *mutex)
|
__gthread_mutex_lock (__gthread_mutex_t *mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_mutex_lock) (mutex);
|
return __gthrw_(pthread_mutex_lock) (mutex);
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
|
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_mutex_trylock) (mutex);
|
return __gthrw_(pthread_mutex_trylock) (mutex);
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
|
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
return __gthrw_(pthread_mutex_unlock) (mutex);
|
return __gthrw_(pthread_mutex_unlock) (mutex);
|
else
|
else
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
mutex->depth = 0;
|
mutex->depth = 0;
|
mutex->owner = (pthread_t) 0;
|
mutex->owner = (pthread_t) 0;
|
return __gthrw_(pthread_mutex_init) (&mutex->actual, NULL);
|
return __gthrw_(pthread_mutex_init) (&mutex->actual, NULL);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
pthread_t me = __gthrw_(pthread_self) ();
|
pthread_t me = __gthrw_(pthread_self) ();
|
|
|
if (mutex->owner != me)
|
if (mutex->owner != me)
|
{
|
{
|
__gthrw_(pthread_mutex_lock) (&mutex->actual);
|
__gthrw_(pthread_mutex_lock) (&mutex->actual);
|
mutex->owner = me;
|
mutex->owner = me;
|
}
|
}
|
|
|
mutex->depth++;
|
mutex->depth++;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
pthread_t me = __gthrw_(pthread_self) ();
|
pthread_t me = __gthrw_(pthread_self) ();
|
|
|
if (mutex->owner != me)
|
if (mutex->owner != me)
|
{
|
{
|
if (__gthrw_(pthread_mutex_trylock) (&mutex->actual))
|
if (__gthrw_(pthread_mutex_trylock) (&mutex->actual))
|
return 1;
|
return 1;
|
mutex->owner = me;
|
mutex->owner = me;
|
}
|
}
|
|
|
mutex->depth++;
|
mutex->depth++;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
if (__gthread_active_p ())
|
if (__gthread_active_p ())
|
{
|
{
|
if (--mutex->depth == 0)
|
if (--mutex->depth == 0)
|
{
|
{
|
mutex->owner = (pthread_t) 0;
|
mutex->owner = (pthread_t) 0;
|
__gthrw_(pthread_mutex_unlock) (&mutex->actual);
|
__gthrw_(pthread_mutex_unlock) (&mutex->actual);
|
}
|
}
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#endif /* _LIBOBJC */
|
#endif /* _LIBOBJC */
|
|
|
#endif /* ! GCC_GTHR_POSIX_H */
|
#endif /* ! GCC_GTHR_POSIX_H */
|
|
|
