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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [gthr-nks.h] - Rev 328
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/* Threads compatibility routines for libgcc2 and libobjc. */ /* Compile this one with gcc. */ /* Copyright (C) 2002, 2003, 2004, 2008, 2009 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ #ifndef GCC_GTHR_NKS_H #define GCC_GTHR_NKS_H /* NKS threads specific definitions. Easy, since the interface is mostly one-to-one mapping. */ #define __GTHREADS 1 #define NKS_NO_INLINE_FUNCS #include <nksapi.h> #include <string.h> typedef NXKey_t __gthread_key_t; typedef NXMutex_t *__gthread_mutex_t; typedef NXMutex_t *__gthread_recursive_mutex_t; #define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function static inline int __gthread_active_p (void) { return 1; } #ifdef _LIBOBJC /* This is the config.h file in libobjc/ */ #include <config.h> #ifdef HAVE_SCHED_H # include <sched.h> #endif /* Key structure for maintaining thread specific storage */ static NXKey_t _objc_thread_storage; /* Backend initialization functions */ /* Initialize the threads subsystem. */ static inline int __gthread_objc_init_thread_system (void) { /* Initialize the thread storage key. */ if (NXKeyCreate (NULL, NULL, &_objc_thread_storage) == 0) return 0; return -1; } /* Close the threads subsystem. */ static inline int __gthread_objc_close_thread_system (void) { if (NXKeyDelete (_objc_thread_storage) == 0) return 0; return -1; } /* Backend thread functions */ /* Create a new thread of execution. */ static inline objc_thread_t __gthread_objc_thread_detach (void (*func)(void *), void *arg) { objc_thread_t thread_id; NXContext_t context; NXThreadId_t new_thread_handle; int err; if ((context = NXContextAlloc (func, arg, NX_PRIO_MED, 0, 0, 0, &err)) == NULL) thread_id = NULL; else if (NXThreadCreate (context, NX_THR_DETACHED, &new_thread_handle) == 0) thread_id = (objc_thread_t) new_thread_handle; else { NXContextFree (context); thread_id = NULL; } return thread_id; } /* Set the current thread's priority. */ static inline int __gthread_objc_thread_set_priority (int priority) { if (NXThreadSetPriority (NXThreadGetId (), priority) == 0) return 0; return -1; } /* Return the current thread's priority. */ static inline int __gthread_objc_thread_get_priority (void) { int priority; if (NXThreadGetPriority (NXThreadGetId (), &priority) == 0) return priority; return -1; } /* Yield our process time to another thread. */ static inline void __gthread_objc_thread_yield (void) { NXThreadYield (); } /* Terminate the current thread. */ static inline int __gthread_objc_thread_exit (void) { /* exit the thread */ NXThreadExit (&__objc_thread_exit_status); /* Failed if we reached here */ return -1; } /* Returns an integer value which uniquely describes a thread. */ static inline objc_thread_t __gthread_objc_thread_id (void) { (objc_thread_t) NXThreadGetId (); } /* Sets the thread's local storage pointer. */ static inline int __gthread_objc_thread_set_data (void *value) { return NXKeySetValue (_objc_thread_storage, value); } /* Returns the thread's local storage pointer. */ static inline void * __gthread_objc_thread_get_data (void) { void *value; if (NXKeyGetValue (_objc_thread_storage, &value) == 0) return value; return NULL; } /* Backend mutex functions */ /* Allocate a mutex. */ static inline int __gthread_objc_mutex_allocate (objc_mutex_t mutex) { static const NX_LOCK_INFO_ALLOC (info, "GNU ObjC", 0); if ((mutex->backend = NXMutexAlloc (0, 0, &info)) == NULL) return 0; return -1; } /* Deallocate a mutex. */ static inline int __gthread_objc_mutex_deallocate (objc_mutex_t mutex) { while (NXMutexIsOwned ((NXMutex_t *)mutex->backend)) NXUnlock ((NXMutex_t *)mutex->backend); if (NXMutexFree ((NXMutex_t *)mutex->backend) != 0) return -1; mutex->backend = NULL; return 0; } /* Grab a lock on a mutex. */ static inline int __gthread_objc_mutex_lock (objc_mutex_t mutex) { return NXLock ((NXMutex_t *)mutex->backend); } /* Try to grab a lock on a mutex. */ static inline int __gthread_objc_mutex_trylock (objc_mutex_t mutex) { if (!NXTryLock ((NXMutex_t *)mutex->backend)) return -1; return 0; } /* Unlock the mutex */ static inline int __gthread_objc_mutex_unlock (objc_mutex_t mutex) { return NXUnlock ((NXMutex_t *)mutex->backend); } /* Backend condition mutex functions */ /* Allocate a condition. */ static inline int __gthread_objc_condition_allocate (objc_condition_t condition) { condition->backend = NXCondAlloc (NULL); if (condition->backend == NULL) return -1; return 0; } /* Deallocate a condition. */ static inline int __gthread_objc_condition_deallocate (objc_condition_t condition) { if (NXCondFree ((NXCond_t *)condition->backend) != 0) return -1; condition->backend = NULL; return 0; } /* Wait on the condition */ static inline int __gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex) { return NXCondWait ((NXCond_t *)condition->backend, (NXMutex_t *)mutex->backend); } /* Wake up all threads waiting on this condition. */ static inline int __gthread_objc_condition_broadcast (objc_condition_t condition) { return NXCondBroadcast ((NXCond_t *)condition->backend); } /* Wake up one thread waiting on this condition. */ static inline int __gthread_objc_condition_signal (objc_condition_t condition) { return NXCondSignal ((NXCond_t *)condition->backend); } #else /* _LIBOBJC */ #if defined(__cplusplus) # include <bits/atomicity.h> /* The remaining conditions here are temporary until there is an application accessible atomic operations API set... */ #elif defined(_M_IA64) || defined(__ia64__) # include <../libstdc++-v3/config/cpu/ia64/bits/atomicity.h> #elif defined(_M_IX86) || defined(__i486__) # include <../libstdc++-v3/config/cpu/i486/bits/atomicity.h> #elif defined(_M_AMD64) || defined(__x86_64__) # include <../libstdc++-v3/config/cpu/x86-64/bits/atomicity.h> #endif typedef volatile long __gthread_once_t; #define __GTHREAD_ONCE_INIT 0 static inline int __gthread_once (__gthread_once_t *__once, void (*__func) (void)) { if (__compare_and_swap (__once, 0, 1)) { __func (); *__once |= 2; } else { while (!(*__once & 2)) NXThreadYield (); } return 0; } static inline int __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) { return NXKeyCreate (__dtor, NULL, __key); } static inline int __gthread_key_dtor (__gthread_key_t __key, void *__ptr) { /* Just reset the key value to zero. */ if (__ptr) return NXKeySetValue (__key, NULL); return 0; } static inline int __gthread_key_delete (__gthread_key_t __key) { return NXKeyDelete (__key); } static inline void * __gthread_getspecific (__gthread_key_t __key) { void *__value; if (NXKeyGetValue (__key, &__value) == 0) return __value; return NULL; } static inline int __gthread_setspecific (__gthread_key_t __key, const void *__ptr) { return NXKeySetValue (__key, (void *)__ptr); } static inline void __gthread_mutex_init_function (__gthread_mutex_t *__mutex) { static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0); *__mutex = NXMutexAlloc (0, 0, &__info); } static inline int __gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex)) { return 0; } static inline int __gthread_mutex_lock (__gthread_mutex_t *__mutex) { return NXLock (*__mutex); } static inline int __gthread_mutex_trylock (__gthread_mutex_t *__mutex) { if (NXTryLock (*__mutex)) return 0; return -1; } static inline int __gthread_mutex_unlock (__gthread_mutex_t *__mutex) { return NXUnlock (*__mutex); } static inline void __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) { static const NX_LOCK_INFO_ALLOC (__info, "GTHREADS", 0); *__mutex = NXMutexAlloc (NX_MUTEX_RECURSIVE, 0, &__info); } static inline int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) { return NXLock (*__mutex); } static inline int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) { if (NXTryLock (*__mutex)) return 0; return -1; } static inline int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) { return NXUnlock (*__mutex); } #endif /* _LIBOBJC */ #endif /* not GCC_GTHR_NKS_H */
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