X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgthr-solaris.h;h=a726bfa1fd9344ada92126fc26080823fc4b612e;hb=e61456db1f1a35cc75cd1f291edce0ea1a66b3bd;hp=14996101824bd00c8a6cce6e7d79ec4d234936ae;hpb=2a28135353b97956c0ad51a9fe00868f24458a06;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/gthr-solaris.h b/gcc/gthr-solaris.h index 14996101824..a726bfa1fd9 100644 --- a/gcc/gthr-solaris.h +++ b/gcc/gthr-solaris.h @@ -1,23 +1,24 @@ /* Threads compatibility routines for libgcc2 and libobjc. */ /* Compile this one with gcc. */ -/* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1999, 2000, 2004, 2005, 2006 + Free Software Foundation, Inc. -This file is part of GNU CC. +This file is part of GCC. -GNU CC 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 2, or (at your option) -any later version. +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 2, or (at your option) any later +version. -GNU CC 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. +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. You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ /* As a special exception, if you link this library with other files, some of which are compiled with GCC, to produce an executable, @@ -31,61 +32,80 @@ Boston, MA 02111-1307, USA. */ /* Solaris threads as found in Solaris 2.[456]. Actually these are Unix International (UI) threads, but I don't - know if anyone else implements these. */ + know if anyone else implements these. */ #define __GTHREADS 1 #include #include +#ifdef __cplusplus +#define UNUSED(x) +#else +#define UNUSED(x) x __attribute__((unused)) +#endif + typedef thread_key_t __gthread_key_t; -typedef struct -{ +typedef struct { mutex_t mutex; int once; } __gthread_once_t; typedef mutex_t __gthread_mutex_t; +typedef struct { + long depth; + thread_t owner; + mutex_t actual; +} __gthread_recursive_mutex_t; + #define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 } #define __GTHREAD_MUTEX_INIT DEFAULTMUTEX +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function #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 -#pragma weak thr_keycreate -#pragma weak thr_getspecific -#pragma weak thr_setspecific -#pragma weak thr_create +__gthrw(thr_keycreate) +__gthrw(thr_getspecific) +__gthrw(thr_setspecific) +__gthrw(thr_create) +__gthrw(thr_self) -#pragma weak mutex_lock -#pragma weak mutex_trylock -#pragma weak mutex_unlock +__gthrw(mutex_init) +__gthrw(mutex_destroy) +__gthrw(mutex_lock) +__gthrw(mutex_trylock) +__gthrw(mutex_unlock) #ifdef _LIBOBJC -#pragma weak thr_exit -#pragma weak thr_keycreate -#pragma weak thr_getprio -#pragma weak thr_self -#pragma weak thr_setprio -#pragma weak thr_yield - -#pragma weak cond_init -#pragma weak cond_destroy -#pragma weak cond_wait -#pragma weak cond_broadcast -#pragma weak cond_signal - -#pragma weak mutex_init -#pragma weak mutex_destroy +__gthrw(thr_exit) +__gthrw(thr_getprio) +__gthrw(thr_setprio) +__gthrw(thr_yield) + +__gthrw(cond_init) +__gthrw(cond_destroy) +__gthrw(cond_wait) +__gthrw(cond_broadcast) +__gthrw(cond_signal) + #endif -/* This will not actually work in Solaris 2.5, since libc contains - dummy symbols of all thr_* routines. */ +#if SUPPORTS_WEAK && GTHREAD_USE_WEAK -static void *__gthread_active_ptr = &thr_create; +/* This will not actually work in Solaris 2.5, since libc contains + dummy symbols of all thr_* routines. */ static inline int __gthread_active_p (void) { + static void *const __gthread_active_ptr = (void *) &__gthrw_(thr_create); return __gthread_active_ptr != 0; } @@ -109,21 +129,21 @@ static void *thread_local_storage = NULL; /* Backend initialization functions */ -/* Initialize the threads subsystem. */ +/* Initialize the threads subsystem. */ 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 (__gthread_active_p () - && thr_keycreate(&_objc_thread_storage, NULL) == 0) + && __gthrw_(thr_keycreate) (&_objc_thread_storage, NULL) == 0) return 0; return -1; } -/* Close the threads subsystem. */ +/* Close the threads subsystem. */ static inline int -__gthread_objc_close_thread_system(void) +__gthread_objc_close_thread_system (void) { if (__gthread_active_p ()) return 0; @@ -133,29 +153,29 @@ __gthread_objc_close_thread_system(void) /* Backend thread functions */ -/* Create a new thread of execution. */ +/* Create a new thread of execution. */ 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; thread_t new_thread_id = 0; if (!__gthread_active_p ()) return NULL; - - if (thr_create(NULL, 0, (void *)func, arg, - THR_DETACHED | THR_NEW_LWP, - &new_thread_id) == 0) - thread_id = *(objc_thread_t *)&new_thread_id; + + if (__gthrw_(thr_create) (NULL, 0, (void *) func, arg, + THR_DETACHED | THR_NEW_LWP, + &new_thread_id) == 0) + thread_id = *(objc_thread_t *) &new_thread_id; else thread_id = NULL; - + return thread_id; } -/* Set the current thread's priority. */ +/* Set the current thread's priority. */ static inline int -__gthread_objc_thread_set_priority(int priority) +__gthread_objc_thread_set_priority (int priority) { int sys_priority = 0; @@ -177,22 +197,22 @@ __gthread_objc_thread_set_priority(int priority) } /* Change priority */ - if (thr_setprio(thr_self(), sys_priority) == 0) + if (__gthrw_(thr_setprio) (__gthrw_(thr_self) (), sys_priority) == 0) return 0; else return -1; } -/* Return the current thread's priority. */ +/* Return the current thread's priority. */ static inline int -__gthread_objc_thread_get_priority(void) +__gthread_objc_thread_get_priority (void) { int sys_priority; if (!__gthread_active_p ()) return OBJC_THREAD_INTERACTIVE_PRIORITY; - - if (thr_getprio(thr_self(), &sys_priority) == 0) + + if (__gthrw_(thr_getprio) (__gthrw_(thr_self) (), &sys_priority) == 0) { if (sys_priority >= 250) return OBJC_THREAD_INTERACTIVE_PRIORITY; @@ -201,47 +221,47 @@ __gthread_objc_thread_get_priority(void) return OBJC_THREAD_LOW_PRIORITY; } - /* Couldn't get priority. */ + /* Couldn't get priority. */ return -1; } -/* Yield our process time to another thread. */ +/* Yield our process time to another thread. */ static inline void -__gthread_objc_thread_yield(void) +__gthread_objc_thread_yield (void) { if (__gthread_active_p ()) - thr_yield(); + __gthrw_(thr_yield) (); } -/* Terminate the current thread. */ +/* Terminate the current thread. */ static inline int -__gthread_objc_thread_exit(void) +__gthread_objc_thread_exit (void) { if (__gthread_active_p ()) /* exit the thread */ - thr_exit(&__objc_thread_exit_status); + __gthrw_(thr_exit) (&__objc_thread_exit_status); /* Failed if we reached here */ 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 -__gthread_objc_thread_id(void) +__gthread_objc_thread_id (void) { if (__gthread_active_p ()) - return (objc_thread_t)thr_self(); + return (objc_thread_t) __gthrw_(thr_self) (); 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 -__gthread_objc_thread_set_data(void *value) +__gthread_objc_thread_set_data (void *value) { if (__gthread_active_p ()) { - if (thr_setspecific(_objc_thread_storage, value) == 0) + if (__gthrw_(thr_setspecific) (_objc_thread_storage, value) == 0) return 0; else return -1; @@ -253,15 +273,15 @@ __gthread_objc_thread_set_data(void *value) } } -/* Returns the thread's local storage pointer. */ +/* Returns the thread's local storage pointer. */ static inline void * -__gthread_objc_thread_get_data(void) +__gthread_objc_thread_get_data (void) { void *value = NULL; if (__gthread_active_p ()) { - if (thr_getspecific(_objc_thread_storage, &value) == 0) + if (__gthrw_(thr_getspecific) (_objc_thread_storage, &value) == 0) return value; else return NULL; @@ -272,44 +292,44 @@ __gthread_objc_thread_get_data(void) /* Backend mutex functions */ -/* Allocate a mutex. */ +/* Allocate a mutex. */ static inline int -__gthread_objc_mutex_allocate(objc_mutex_t mutex) +__gthread_objc_mutex_allocate (objc_mutex_t mutex) { if (__gthread_active_p () - && mutex_init( (mutex_t *)(&(mutex->backend)), USYNC_THREAD, 0)) + && __gthrw_(mutex_init) ((mutex_t *) (&(mutex->backend)), USYNC_THREAD, 0)) return -1; return 0; } -/* Deallocate a mutex. */ +/* Deallocate a mutex. */ static inline int -__gthread_objc_mutex_deallocate(objc_mutex_t mutex) +__gthread_objc_mutex_deallocate (objc_mutex_t mutex) { if (__gthread_active_p ()) - mutex_destroy((mutex_t *)(&(mutex->backend))); + __gthrw_(mutex_destroy) ((mutex_t *) (&(mutex->backend))); return 0; } -/* Grab a lock on a mutex. */ +/* Grab a lock on a mutex. */ static inline int -__gthread_objc_mutex_lock(objc_mutex_t mutex) +__gthread_objc_mutex_lock (objc_mutex_t mutex) { if (__gthread_active_p () - && mutex_lock((mutex_t *)(&(mutex->backend))) != 0) + && __gthrw_(mutex_lock) ((mutex_t *) (&(mutex->backend))) != 0) return -1; return 0; } -/* Try to grab a lock on a mutex. */ +/* Try to grab a lock on a mutex. */ static inline int -__gthread_objc_mutex_trylock(objc_mutex_t mutex) +__gthread_objc_mutex_trylock (objc_mutex_t mutex) { if (__gthread_active_p () - && mutex_trylock((mutex_t *)(&(mutex->backend))) != 0) + && __gthrw_(mutex_trylock) ((mutex_t *) (&(mutex->backend))) != 0) return -1; return 0; @@ -317,10 +337,10 @@ __gthread_objc_mutex_trylock(objc_mutex_t mutex) /* Unlock the mutex */ static inline int -__gthread_objc_mutex_unlock(objc_mutex_t mutex) +__gthread_objc_mutex_unlock (objc_mutex_t mutex) { if (__gthread_active_p () - && mutex_unlock((mutex_t *)(&(mutex->backend))) != 0) + && __gthrw_(mutex_unlock) ((mutex_t *) (&(mutex->backend))) != 0) return -1; return 0; @@ -328,54 +348,54 @@ __gthread_objc_mutex_unlock(objc_mutex_t mutex) /* Backend condition mutex functions */ -/* Allocate a condition. */ +/* Allocate a condition. */ static inline int -__gthread_objc_condition_allocate(objc_condition_t condition) +__gthread_objc_condition_allocate (objc_condition_t condition) { if (__gthread_active_p ()) - return cond_init((cond_t *)(&(condition->backend)), USYNC_THREAD, - NULL); + return __gthrw_(cond_init) ((cond_t *) (&(condition->backend)), USYNC_THREAD, + NULL); else return 0; } -/* Deallocate a condition. */ +/* Deallocate a condition. */ static inline int -__gthread_objc_condition_deallocate(objc_condition_t condition) +__gthread_objc_condition_deallocate (objc_condition_t condition) { if (__gthread_active_p ()) - return cond_destroy((cond_t *)(&(condition->backend))); + return __gthrw_(cond_destroy) ((cond_t *) (&(condition->backend))); else return 0; } /* Wait on the condition */ 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 ()) - return cond_wait((cond_t *)(&(condition->backend)), - (mutex_t *)(&(mutex->backend))); + return __gthrw_(cond_wait) ((cond_t *) (&(condition->backend)), + (mutex_t *) (&(mutex->backend))); else return 0; } -/* Wake up all threads waiting on this condition. */ +/* Wake up all threads waiting on this condition. */ static inline int -__gthread_objc_condition_broadcast(objc_condition_t condition) +__gthread_objc_condition_broadcast (objc_condition_t condition) { if (__gthread_active_p ()) - return cond_broadcast((cond_t *)(&(condition->backend))); + return __gthrw_(cond_broadcast) ((cond_t *) (&(condition->backend))); else return 0; } -/* Wake up one thread waiting on this condition. */ +/* Wake up one thread waiting on this condition. */ static inline int -__gthread_objc_condition_signal(objc_condition_t condition) +__gthread_objc_condition_signal (objc_condition_t condition) { if (__gthread_active_p ()) - return cond_signal((cond_t *)(&(condition->backend))); + return __gthrw_(cond_signal) ((cond_t *) (&(condition->backend))); else return 0; } @@ -393,15 +413,15 @@ __gthread_once (__gthread_once_t *once, void (*func) (void)) if (once->once == 0) { - int status = mutex_lock (&once->mutex); + int status = __gthrw_(mutex_lock) (&once->mutex); if (status != 0) return status; if (once->once == 0) { (*func) (); - once->once ++; + once->once++; } - mutex_unlock (&once->mutex); + __gthrw_(mutex_unlock) (&once->mutex); } return 0; } @@ -410,25 +430,18 @@ static inline int __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *)) { /* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually - got a reasonable key value, and if not, fail. */ - *key = -1; - if (thr_keycreate (key, dtor) != 0 || *key == -1) + got a reasonable key value, and if not, fail. */ + *key = (__gthread_key_t)-1; + if (__gthrw_(thr_keycreate) (key, dtor) != 0 || *key == (__gthread_key_t)-1) return -1; else return 0; } static inline int -__gthread_key_dtor (__gthread_key_t key, void *ptr) -{ - /* Nothing needed. */ - return 0; -} - -static inline int -__gthread_key_delete (__gthread_key_t key) +__gthread_key_delete (__gthread_key_t UNUSED (key)) { - /* Not possible. */ + /* Not possible. */ return -1; } @@ -436,7 +449,7 @@ static inline void * __gthread_getspecific (__gthread_key_t key) { void *ptr; - if (thr_getspecific (key, &ptr) == 0) + if (__gthrw_(thr_getspecific) (key, &ptr) == 0) return ptr; else return 0; @@ -445,14 +458,23 @@ __gthread_getspecific (__gthread_key_t key) static inline int __gthread_setspecific (__gthread_key_t key, const void *ptr) { - return thr_setspecific (key, (void *) ptr); + return __gthrw_(thr_setspecific) (key, (void *) ptr); +} + +static inline int +__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex)) +{ + if (__gthread_active_p ()) + return __gthrw_(mutex_destroy) (mutex); + else + return 0; } static inline int __gthread_mutex_lock (__gthread_mutex_t *mutex) { if (__gthread_active_p ()) - return mutex_lock (mutex); + return __gthrw_(mutex_lock) (mutex); else return 0; } @@ -461,7 +483,7 @@ static inline int __gthread_mutex_trylock (__gthread_mutex_t *mutex) { if (__gthread_active_p ()) - return mutex_trylock (mutex); + return __gthrw_(mutex_trylock) (mutex); else return 0; } @@ -470,11 +492,72 @@ static inline int __gthread_mutex_unlock (__gthread_mutex_t *mutex) { if (__gthread_active_p ()) - return mutex_unlock (mutex); + return __gthrw_(mutex_unlock) (mutex); else return 0; } +static inline int +__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex) +{ + mutex->depth = 0; + mutex->owner = (thread_t) 0; + return __gthrw_(mutex_init) (&mutex->actual, USYNC_THREAD, 0); +} + +static inline int +__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex) +{ + if (__gthread_active_p ()) + { + thread_t me = __gthrw_(thr_self) (); + + if (mutex->owner != me) + { + __gthrw_(mutex_lock) (&mutex->actual); + mutex->owner = me; + } + + mutex->depth++; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex) +{ + if (__gthread_active_p ()) + { + thread_t me = __gthrw_(thr_self) (); + + if (mutex->owner != me) + { + if (__gthrw_(mutex_trylock) (&mutex->actual)) + return 1; + mutex->owner = me; + } + + mutex->depth++; + } + return 0; +} + +static inline int +__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex) +{ + if (__gthread_active_p ()) + { + if (--mutex->depth == 0) + { + mutex->owner = (thread_t) 0; + __gthrw_(mutex_unlock) (&mutex->actual); + } + } + return 0; +} + #endif /* _LIBOBJC */ +#undef UNUSED + #endif /* ! GCC_GTHR_SOLARIS_H */