/* 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) 2002, 2003, 2004, 2008, 2009 Free Software Foundation, Inc.
|
/* Copyright (C) 2002, 2003, 2004, 2008, 2009 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 3, or (at your option) any later
|
Software Foundation; either version 3, 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.
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
Under Section 7 of GPL version 3, you are granted additional
|
permissions described in the GCC Runtime Library Exception, version
|
permissions described in the GCC Runtime Library Exception, version
|
3.1, as published by the Free Software Foundation.
|
3.1, as published by the Free Software Foundation.
|
|
|
You should have received a copy of the GNU General Public License and
|
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;
|
a copy of the GCC Runtime Library Exception along with this program;
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
#ifndef GCC_GTHR_NKS_H
|
#ifndef GCC_GTHR_NKS_H
|
#define GCC_GTHR_NKS_H
|
#define GCC_GTHR_NKS_H
|
|
|
/* NKS threads specific definitions.
|
/* NKS threads specific definitions.
|
Easy, since the interface is mostly one-to-one mapping. */
|
Easy, since the interface is mostly one-to-one mapping. */
|
|
|
#define __GTHREADS 1
|
#define __GTHREADS 1
|
|
|
#define NKS_NO_INLINE_FUNCS
|
#define NKS_NO_INLINE_FUNCS
|
#include <nksapi.h>
|
#include <nksapi.h>
|
#include <string.h>
|
#include <string.h>
|
|
|
typedef NXKey_t __gthread_key_t;
|
typedef NXKey_t __gthread_key_t;
|
typedef NXMutex_t *__gthread_mutex_t;
|
typedef NXMutex_t *__gthread_mutex_t;
|
typedef NXMutex_t *__gthread_recursive_mutex_t;
|
typedef NXMutex_t *__gthread_recursive_mutex_t;
|
|
|
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
|
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
|
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
|
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
|
|
|
static inline int
|
static inline int
|
__gthread_active_p (void)
|
__gthread_active_p (void)
|
{
|
{
|
return 1;
|
return 1;
|
}
|
}
|
|
|
#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 NXKey_t _objc_thread_storage;
|
static NXKey_t _objc_thread_storage;
|
|
|
/* 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)
|
{
|
{
|
/* Initialize the thread storage key. */
|
/* Initialize the thread storage key. */
|
if (NXKeyCreate (NULL, NULL, &_objc_thread_storage) == 0)
|
if (NXKeyCreate (NULL, NULL, &_objc_thread_storage) == 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 (NXKeyDelete (_objc_thread_storage) == 0)
|
if (NXKeyDelete (_objc_thread_storage) == 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;
|
NXContext_t context;
|
NXContext_t context;
|
NXThreadId_t new_thread_handle;
|
NXThreadId_t new_thread_handle;
|
int err;
|
int err;
|
|
|
if ((context = NXContextAlloc (func, arg, NX_PRIO_MED, 0, 0, 0, &err)) == NULL)
|
if ((context = NXContextAlloc (func, arg, NX_PRIO_MED, 0, 0, 0, &err)) == NULL)
|
thread_id = NULL;
|
thread_id = NULL;
|
else if (NXThreadCreate (context, NX_THR_DETACHED, &new_thread_handle) == 0)
|
else if (NXThreadCreate (context, NX_THR_DETACHED, &new_thread_handle) == 0)
|
thread_id = (objc_thread_t) new_thread_handle;
|
thread_id = (objc_thread_t) new_thread_handle;
|
else {
|
else {
|
NXContextFree (context);
|
NXContextFree (context);
|
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 (NXThreadSetPriority (NXThreadGetId (), priority) == 0)
|
if (NXThreadSetPriority (NXThreadGetId (), priority) == 0)
|
return 0;
|
return 0;
|
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)
|
{
|
{
|
int priority;
|
int priority;
|
|
|
if (NXThreadGetPriority (NXThreadGetId (), &priority) == 0)
|
if (NXThreadGetPriority (NXThreadGetId (), &priority) == 0)
|
return priority;
|
return priority;
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
NXThreadYield ();
|
NXThreadYield ();
|
}
|
}
|
|
|
/* Terminate the current thread. */
|
/* Terminate the current thread. */
|
static inline int
|
static inline int
|
__gthread_objc_thread_exit (void)
|
__gthread_objc_thread_exit (void)
|
{
|
{
|
/* exit the thread */
|
/* exit the thread */
|
NXThreadExit (&__objc_thread_exit_status);
|
NXThreadExit (&__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)
|
{
|
{
|
(objc_thread_t) NXThreadGetId ();
|
(objc_thread_t) NXThreadGetId ();
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
return NXKeySetValue (_objc_thread_storage, value);
|
return NXKeySetValue (_objc_thread_storage, value);
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
void *value;
|
void *value;
|
|
|
if (NXKeyGetValue (_objc_thread_storage, &value) == 0)
|
if (NXKeyGetValue (_objc_thread_storage, &value) == 0)
|
return value;
|
return value;
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
static const NX_LOCK_INFO_ALLOC (info, "GNU ObjC", 0);
|
static const NX_LOCK_INFO_ALLOC (info, "GNU ObjC", 0);
|
|
|
if ((mutex->backend = NXMutexAlloc (0, 0, &info)) == NULL)
|
if ((mutex->backend = NXMutexAlloc (0, 0, &info)) == NULL)
|
return 0;
|
return 0;
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
while (NXMutexIsOwned ((NXMutex_t *)mutex->backend))
|
while (NXMutexIsOwned ((NXMutex_t *)mutex->backend))
|
NXUnlock ((NXMutex_t *)mutex->backend);
|
NXUnlock ((NXMutex_t *)mutex->backend);
|
if (NXMutexFree ((NXMutex_t *)mutex->backend) != 0)
|
if (NXMutexFree ((NXMutex_t *)mutex->backend) != 0)
|
return -1;
|
return -1;
|
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)
|
{
|
{
|
return NXLock ((NXMutex_t *)mutex->backend);
|
return NXLock ((NXMutex_t *)mutex->backend);
|
}
|
}
|
|
|
/* 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 (!NXTryLock ((NXMutex_t *)mutex->backend))
|
if (!NXTryLock ((NXMutex_t *)mutex->backend))
|
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)
|
{
|
{
|
return NXUnlock ((NXMutex_t *)mutex->backend);
|
return NXUnlock ((NXMutex_t *)mutex->backend);
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
condition->backend = NXCondAlloc (NULL);
|
condition->backend = NXCondAlloc (NULL);
|
if (condition->backend == NULL)
|
if (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 (NXCondFree ((NXCond_t *)condition->backend) != 0)
|
if (NXCondFree ((NXCond_t *)condition->backend) != 0)
|
return -1;
|
return -1;
|
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)
|
{
|
{
|
return NXCondWait ((NXCond_t *)condition->backend, (NXMutex_t *)mutex->backend);
|
return NXCondWait ((NXCond_t *)condition->backend, (NXMutex_t *)mutex->backend);
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
return NXCondBroadcast ((NXCond_t *)condition->backend);
|
return NXCondBroadcast ((NXCond_t *)condition->backend);
|
}
|
}
|
|
|
/* 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)
|
{
|
{
|
return NXCondSignal ((NXCond_t *)condition->backend);
|
return NXCondSignal ((NXCond_t *)condition->backend);
|
}
|
}
|
|
|
#else /* _LIBOBJC */
|
#else /* _LIBOBJC */
|
|
|
#if defined(__cplusplus)
|
#if defined(__cplusplus)
|
# include <bits/atomicity.h>
|
# include <bits/atomicity.h>
|
/* The remaining conditions here are temporary until there is
|
/* The remaining conditions here are temporary until there is
|
an application accessible atomic operations API set... */
|
an application accessible atomic operations API set... */
|
#elif defined(_M_IA64) || defined(__ia64__)
|
#elif defined(_M_IA64) || defined(__ia64__)
|
# include <../libstdc++-v3/config/cpu/ia64/bits/atomicity.h>
|
# include <../libstdc++-v3/config/cpu/ia64/bits/atomicity.h>
|
#elif defined(_M_IX86) || defined(__i486__)
|
#elif defined(_M_IX86) || defined(__i486__)
|
# include <../libstdc++-v3/config/cpu/i486/bits/atomicity.h>
|
# include <../libstdc++-v3/config/cpu/i486/bits/atomicity.h>
|
#elif defined(_M_AMD64) || defined(__x86_64__)
|
#elif defined(_M_AMD64) || defined(__x86_64__)
|
# include <../libstdc++-v3/config/cpu/x86-64/bits/atomicity.h>
|
# include <../libstdc++-v3/config/cpu/x86-64/bits/atomicity.h>
|
#endif
|
#endif
|
|
|
typedef volatile long __gthread_once_t;
|
typedef volatile long __gthread_once_t;
|
|
|
#define __GTHREAD_ONCE_INIT 0
|
#define __GTHREAD_ONCE_INIT 0
|
|
|
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 (__compare_and_swap (__once, 0, 1))
|
if (__compare_and_swap (__once, 0, 1))
|
{
|
{
|
__func ();
|
__func ();
|
*__once |= 2;
|
*__once |= 2;
|
}
|
}
|
else
|
else
|
{
|
{
|
while (!(*__once & 2))
|
while (!(*__once & 2))
|
NXThreadYield ();
|
NXThreadYield ();
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
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 NXKeyCreate (__dtor, NULL, __key);
|
return NXKeyCreate (__dtor, NULL, __key);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_key_dtor (__gthread_key_t __key, void *__ptr)
|
__gthread_key_dtor (__gthread_key_t __key, void *__ptr)
|
{
|
{
|
/* Just reset the key value to zero. */
|
/* Just reset the key value to zero. */
|
if (__ptr)
|
if (__ptr)
|
return NXKeySetValue (__key, NULL);
|
return NXKeySetValue (__key, NULL);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_key_delete (__gthread_key_t __key)
|
__gthread_key_delete (__gthread_key_t __key)
|
{
|
{
|
return NXKeyDelete (__key);
|
return NXKeyDelete (__key);
|
}
|
}
|
|
|
static inline void *
|
static inline void *
|
__gthread_getspecific (__gthread_key_t __key)
|
__gthread_getspecific (__gthread_key_t __key)
|
{
|
{
|
void *__value;
|
void *__value;
|
|
|
if (NXKeyGetValue (__key, &__value) == 0)
|
if (NXKeyGetValue (__key, &__value) == 0)
|
return __value;
|
return __value;
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
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 NXKeySetValue (__key, (void *)__ptr);
|
return NXKeySetValue (__key, (void *)__ptr);
|
}
|
}
|
|
|
static inline void
|
static inline void
|
__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
|
__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
|
{
|
{
|
static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0);
|
static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0);
|
|
|
*__mutex = NXMutexAlloc (0, 0, &__info);
|
*__mutex = NXMutexAlloc (0, 0, &__info);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex))
|
__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex))
|
{
|
{
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_lock (__gthread_mutex_t *__mutex)
|
__gthread_mutex_lock (__gthread_mutex_t *__mutex)
|
{
|
{
|
return NXLock (*__mutex);
|
return NXLock (*__mutex);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
|
__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
|
{
|
{
|
if (NXTryLock (*__mutex))
|
if (NXTryLock (*__mutex))
|
return 0;
|
return 0;
|
return -1;
|
return -1;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
|
__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
|
{
|
{
|
return NXUnlock (*__mutex);
|
return NXUnlock (*__mutex);
|
}
|
}
|
|
|
static inline void
|
static inline void
|
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
|
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
|
{
|
{
|
static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0);
|
static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0);
|
|
|
*__mutex = NXMutexAlloc (NX_MUTEX_RECURSIVE, 0, &__info);
|
*__mutex = NXMutexAlloc (NX_MUTEX_RECURSIVE, 0, &__info);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
|
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
|
{
|
{
|
return NXLock (*__mutex);
|
return NXLock (*__mutex);
|
}
|
}
|
|
|
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 (NXTryLock (*__mutex))
|
if (NXTryLock (*__mutex))
|
return 0;
|
return 0;
|
return -1;
|
return -1;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
|
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
|
{
|
{
|
return NXUnlock (*__mutex);
|
return NXUnlock (*__mutex);
|
}
|
}
|
|
|
#endif /* _LIBOBJC */
|
#endif /* _LIBOBJC */
|
|
|
#endif /* not GCC_GTHR_NKS_H */
|
#endif /* not GCC_GTHR_NKS_H */
|
|
|
