diff options
Diffstat (limited to 'gcc-4.9/libgcc/config/pa/gthr-dce.h')
| -rw-r--r-- | gcc-4.9/libgcc/config/pa/gthr-dce.h | 568 |
1 files changed, 568 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/pa/gthr-dce.h b/gcc-4.9/libgcc/config/pa/gthr-dce.h new file mode 100644 index 000000000..45c9a3e13 --- /dev/null +++ b/gcc-4.9/libgcc/config/pa/gthr-dce.h @@ -0,0 +1,568 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ +/* Copyright (C) 1997-2014 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_DCE_H +#define GCC_GTHR_DCE_H + +/* If _DCE_THREADS is not defined, then we're building the single + threaded version of the libraries and do not want to reference + anything related to pthreads or dce. */ +#ifndef _DCE_THREADS +#include "gthr-single.h" +#else +/* DCE threads interface. + DCE threads are based on POSIX threads draft 4, and many things + have changed since then. */ + +/* Make sure CONST_CAST2 (original in system.h) is defined. */ +#ifndef CONST_CAST2 +#ifdef __cplusplus +#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) +#else +#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) +#endif +#endif + +#define __GTHREADS 1 + +#include <pthread.h> + +typedef pthread_key_t __gthread_key_t; +typedef pthread_once_t __gthread_once_t; +typedef pthread_mutex_t __gthread_mutex_t; +typedef pthread_mutex_t __gthread_recursive_mutex_t; + +#define __GTHREAD_ONCE_INIT pthread_once_init + +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function + +#define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK +# define __gthrw(name) \ + static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); +# define __gthrw_(name) __gthrw_ ## name +#else +# define __gthrw(name) +# define __gthrw_(name) name +#endif + +__gthrw(pthread_once) +__gthrw(pthread_keycreate) +__gthrw(pthread_getspecific) +__gthrw(pthread_setspecific) +__gthrw(pthread_create) +__gthrw(pthread_mutex_init) +__gthrw(pthread_mutex_destroy) +__gthrw(pthread_mutex_lock) +__gthrw(pthread_mutex_trylock) +__gthrw(pthread_mutex_unlock) +__gthrw(pthread_mutexattr_create) +__gthrw(pthread_mutexattr_setkind_np) +__gthrw(pthread_mutexattr_delete) + +#ifdef _LIBOBJC +/* Objective-C. */ +__gthrw(pthread_cond_broadcast) +__gthrw(pthread_cond_destroy) +__gthrw(pthread_cond_init) +__gthrw(pthread_cond_signal) +__gthrw(pthread_cond_wait) +__gthrw(pthread_exit) + +#ifdef pthread_getunique_np +# define __gthrw_pthread_getunique_np pthread_getunique_np +#else +__gthrw(pthread_getunique_np) +# define __gthrw_pthread_getunique_np __gthrw_(pthread_getunique_np) +#endif + +__gthrw(pthread_mutex_destroy) +__gthrw(pthread_self) +__gthrw(pthread_yield) +#endif + +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK + +static inline int +__gthread_active_p (void) +{ + static void *const __gthread_active_ptr = (void *) &__gthrw_(pthread_create); + return __gthread_active_ptr != 0; +} + +#else /* not SUPPORTS_WEAK */ + +static inline int +__gthread_active_p (void) +{ + return 1; +} + +#endif /* SUPPORTS_WEAK */ + +#ifdef _LIBOBJC + +/* Key structure for maintaining thread specific storage */ +static pthread_key_t _objc_thread_storage; + +/* Thread local storage for a single thread */ +static void *thread_local_storage = NULL; + +/* Backend initialization functions */ + +/* Initialize the threads subsystem. */ +static inline int +__gthread_objc_init_thread_system (void) +{ + if (__gthread_active_p ()) + /* Initialize the thread storage key. */ + return __gthrw_(pthread_keycreate) (&_objc_thread_storage, NULL); + else + return -1; +} + +/* Close the threads subsystem. */ +static inline int +__gthread_objc_close_thread_system (void) +{ + if (__gthread_active_p ()) + return 0; + else + 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; + pthread_t new_thread_handle; + + if (!__gthread_active_p ()) + return NULL; + + if (!(__gthrw_(pthread_create) (&new_thread_handle, pthread_attr_default, + (void *) func, arg))) + { + /* ??? May not work! (64bit) */ + thread_id = *(objc_thread_t *) &new_thread_handle; + pthread_detach (&new_thread_handle); /* Fully detach thread. */ + } + else + thread_id = NULL; + + return thread_id; +} + +/* Set the current thread's priority. */ +static inline int +__gthread_objc_thread_set_priority (int priority) +{ + int sys_priority = 0; + + if (!__gthread_active_p ()) + return -1; + + switch (priority) + { + case OBJC_THREAD_INTERACTIVE_PRIORITY: + sys_priority = (PRI_FG_MIN_NP + PRI_FG_MAX_NP) / 2; + break; + default: + case OBJC_THREAD_BACKGROUND_PRIORITY: + sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2; + break; + case OBJC_THREAD_LOW_PRIORITY: + sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2; + break; + } + + /* Change the priority. */ + if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0) + return 0; + else + /* Failed */ + return -1; +} + +/* Return the current thread's priority. */ +static inline int +__gthread_objc_thread_get_priority (void) +{ + int sys_priority; + + if (__gthread_active_p ()) + { + if ((sys_priority = pthread_getprio (__gthrw_(pthread_self) ())) >= 0) + { + if (sys_priority >= PRI_FG_MIN_NP + && sys_priority <= PRI_FG_MAX_NP) + return OBJC_THREAD_INTERACTIVE_PRIORITY; + if (sys_priority >= PRI_BG_MIN_NP + && sys_priority <= PRI_BG_MAX_NP) + return OBJC_THREAD_BACKGROUND_PRIORITY; + return OBJC_THREAD_LOW_PRIORITY; + } + + /* Failed */ + return -1; + } + else + return OBJC_THREAD_INTERACTIVE_PRIORITY; +} + +/* Yield our process time to another thread. */ +static inline void +__gthread_objc_thread_yield (void) +{ + if (__gthread_active_p ()) + __gthrw_(pthread_yield) (); +} + +/* Terminate the current thread. */ +static inline int +__gthread_objc_thread_exit (void) +{ + if (__gthread_active_p ()) + /* exit the thread */ + __gthrw_(pthread_exit) (&__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) +{ + if (__gthread_active_p ()) + { + pthread_t self = __gthrw_(pthread_self) (); + + return (objc_thread_t) __gthrw_pthread_getunique_np (&self); + } + else + return (objc_thread_t) 1; +} + +/* Sets the thread's local storage pointer. */ +static inline int +__gthread_objc_thread_set_data (void *value) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_setspecific) (_objc_thread_storage, value); + else + { + thread_local_storage = value; + return 0; + } +} + +/* Returns the thread's local storage pointer. */ +static inline void * +__gthread_objc_thread_get_data (void) +{ + void *value = NULL; + + if (__gthread_active_p ()) + { + if (!(__gthrw_(pthread_getspecific) (_objc_thread_storage, &value))) + return value; + + return NULL; + } + else + return thread_local_storage; +} + +/* Backend mutex functions */ + +/* Allocate a mutex. */ +static inline int +__gthread_objc_mutex_allocate (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + { + mutex->backend = objc_malloc (sizeof (pthread_mutex_t)); + + if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend, + pthread_mutexattr_default)) + { + objc_free (mutex->backend); + mutex->backend = NULL; + return -1; + } + } + + return 0; +} + +/* Deallocate a mutex. */ +static inline int +__gthread_objc_mutex_deallocate (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + { + if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend)) + return -1; + + objc_free (mutex->backend); + mutex->backend = NULL; + } + + return 0; +} + +/* Grab a lock on a mutex. */ +static inline int +__gthread_objc_mutex_lock (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend); + else + return 0; +} + +/* Try to grab a lock on a mutex. */ +static inline int +__gthread_objc_mutex_trylock (objc_mutex_t mutex) +{ + if (__gthread_active_p () + && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 1) + return -1; + + return 0; +} + +/* Unlock the mutex */ +static inline int +__gthread_objc_mutex_unlock (objc_mutex_t mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend); + else + return 0; +} + +/* Backend condition mutex functions */ + +/* Allocate a condition. */ +static inline int +__gthread_objc_condition_allocate (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Deallocate a condition. */ +static inline int +__gthread_objc_condition_deallocate (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Wait on the condition */ +static inline int +__gthread_objc_condition_wait (objc_condition_t condition + __attribute__ ((__unused__)), + objc_mutex_t mutex __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Wake up all threads waiting on this condition. */ +static inline int +__gthread_objc_condition_broadcast (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +/* Wake up one thread waiting on this condition. */ +static inline int +__gthread_objc_condition_signal (objc_condition_t condition + __attribute__ ((__unused__))) +{ + if (__gthread_active_p ()) + /* Unimplemented. */ + return -1; + else + return 0; +} + +#else /* _LIBOBJC */ + +static inline int +__gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_once) (__once, __func); + else + return -1; +} + +static inline int +__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthrw_(pthread_keycreate) (__key, __dtor); +} + +static inline int +__gthread_key_delete (__gthread_key_t __key __attribute__ ((__unused__))) +{ + /* Operation is not supported. */ + return -1; +} + +static inline void * +__gthread_getspecific (__gthread_key_t __key) +{ + void *__ptr; + if (__gthrw_(pthread_getspecific) (__key, &__ptr) == 0) + return __ptr; + else + return 0; +} + +static inline int +__gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthrw_(pthread_setspecific) + (__key, CONST_CAST2(void *, const void *, __ptr)); +} + +static inline void +__gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + __gthrw_(pthread_mutex_init) (__mutex, pthread_mutexattr_default); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_destroy) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_lock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_trylock) (__mutex); + else + return 0; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthrw_(pthread_mutex_unlock) (__mutex); + else + return 0; +} + +static inline int +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + { + pthread_mutexattr_t __attr; + int __r; + + __r = __gthrw_(pthread_mutexattr_create) (&__attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_setkind_np) (&__attr, + MUTEX_RECURSIVE_NP); + if (!__r) + __r = __gthrw_(pthread_mutex_init) (__mutex, __attr); + if (!__r) + __r = __gthrw_(pthread_mutexattr_delete) (&__attr); + return __r; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_lock (__mutex); +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_trylock (__mutex); +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_unlock (__mutex); +} + +static inline int +__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) +{ + return __gthread_mutex_destroy (__mutex); +} + +#endif /* _LIBOBJC */ + +#endif +#endif /* ! GCC_GTHR_DCE_H */ |