X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgthr-single.h;h=64ff354131d5c82cffe95f55d17027f16466b7c5;hb=bb9594ed71fc9d4d347495ae70cb925196c0da46;hp=f8dfbff4e64577cfea0938f1cf0ae43777414ccf;hpb=8c3046881134b6f302c9153e02d3ce52ac94a110;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/gthr-single.h b/gcc/gthr-single.h index f8dfbff4e64..64ff354131d 100644 --- a/gcc/gthr-single.h +++ b/gcc/gthr-single.h @@ -1,23 +1,23 @@ -/* Threads compatibily routines for libgcc2. */ +/* Threads compatibility routines for libgcc2 and libobjc. */ /* Compile this one with gcc. */ -/* Copyright (C) 1997 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1999, 2000 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, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ /* As a special exception, if you link this library with other files, some of which are compiled with GCC, to produce an executable, @@ -26,37 +26,214 @@ Boston, MA 02111-1307, USA. */ This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ -#ifndef __gthr_single_h -#define __gthr_single_h +#ifndef GCC_GTHR_SINGLE_H +#define GCC_GTHR_SINGLE_H -/* Just provide compatibility for mutex handling. */ +/* Just provide compatibility for mutex handling. */ typedef int __gthread_mutex_t; #define __GTHREAD_MUTEX_INIT 0 +#ifdef __cplusplus +#define UNUSED(x) +#else +#define UNUSED(x) x __attribute__((unused)) +#endif + +#ifdef _LIBOBJC + +/* Thread local storage for a single thread */ +static void *thread_local_storage = NULL; + +/* Backend initialization functions */ + +/* Initialize the threads subsystem. */ static inline int -__gthread_active_p () +__gthread_objc_init_thread_system(void) +{ + /* No thread support available */ + return -1; +} + +/* Close the threads subsystem. */ +static inline int +__gthread_objc_close_thread_system(void) +{ + /* No thread support available */ + return -1; +} + +/* Backend thread functions */ + +/* Create a new thread of execution. */ +static inline objc_thread_t +__gthread_objc_thread_detach(void (* func)(void *), void * UNUSED(arg)) +{ + /* No thread support available */ + return NULL; +} + +/* Set the current thread's priority. */ +static inline int +__gthread_objc_thread_set_priority(int UNUSED(priority)) +{ + /* No thread support available */ + return -1; +} + +/* Return the current thread's priority. */ +static inline int +__gthread_objc_thread_get_priority(void) +{ + return OBJC_THREAD_INTERACTIVE_PRIORITY; +} + +/* Yield our process time to another thread. */ +static inline void +__gthread_objc_thread_yield(void) +{ + return; +} + +/* Terminate the current thread. */ +static inline int +__gthread_objc_thread_exit(void) +{ + /* No thread support available */ + /* Should we really exit the program */ + /* exit(&__objc_thread_exit_status); */ + return -1; +} + +/* Returns an integer value which uniquely describes a thread. */ +static inline objc_thread_t +__gthread_objc_thread_id(void) +{ + /* No thread support, use 1. */ + return (objc_thread_t)1; +} + +/* Sets the thread's local storage pointer. */ +static inline int +__gthread_objc_thread_set_data(void *value) +{ + thread_local_storage = value; + return 0; +} + +/* Returns the thread's local storage pointer. */ +static inline void * +__gthread_objc_thread_get_data(void) +{ + return thread_local_storage; +} + +/* Backend mutex functions */ + +/* Allocate a mutex. */ +static inline int +__gthread_objc_mutex_allocate(objc_mutex_t UNUSED(mutex)) { return 0; } +/* Deallocate a mutex. */ static inline int -__gthread_mutex_lock (__gthread_mutex_t *mutex __attribute__ ((__unused__))) +__gthread_objc_mutex_deallocate(objc_mutex_t UNUSED(mutex)) { return 0; } +/* Grab a lock on a mutex. */ static inline int -__gthread_mutex_trylock (__gthread_mutex_t *mutex __attribute__ ((__unused__))) +__gthread_objc_mutex_lock(objc_mutex_t UNUSED(mutex)) { + /* There can only be one thread, so we always get the lock */ return 0; } +/* Try to grab a lock on a mutex. */ static inline int -__gthread_mutex_unlock (__gthread_mutex_t *mutex __attribute__ ((__unused__))) +__gthread_objc_mutex_trylock(objc_mutex_t UNUSED(mutex)) { + /* There can only be one thread, so we always get the lock */ return 0; } -#endif /* not __gthr_single_h */ +/* Unlock the mutex */ +static inline int +__gthread_objc_mutex_unlock(objc_mutex_t UNUSED(mutex)) +{ + return 0; +} + +/* Backend condition mutex functions */ + +/* Allocate a condition. */ +static inline int +__gthread_objc_condition_allocate(objc_condition_t UNUSED(condition)) +{ + return 0; +} + +/* Deallocate a condition. */ +static inline int +__gthread_objc_condition_deallocate(objc_condition_t UNUSED(condition)) +{ + return 0; +} + +/* Wait on the condition */ +static inline int +__gthread_objc_condition_wait(objc_condition_t UNUSED(condition), + objc_mutex_t UNUSED(mutex)) +{ + return 0; +} + +/* Wake up all threads waiting on this condition. */ +static inline int +__gthread_objc_condition_broadcast(objc_condition_t UNUSED(condition)) +{ + return 0; +} + +/* Wake up one thread waiting on this condition. */ +static inline int +__gthread_objc_condition_signal(objc_condition_t UNUSED(condition)) +{ + return 0; +} + +#else /* _LIBOBJC */ + +static inline int +__gthread_active_p (void) +{ + return 0; +} + +static inline int +__gthread_mutex_lock (__gthread_mutex_t * UNUSED(mutex)) +{ + return 0; +} + +static inline int +__gthread_mutex_trylock (__gthread_mutex_t * UNUSED(mutex)) +{ + return 0; +} + +static inline int +__gthread_mutex_unlock (__gthread_mutex_t * UNUSED(mutex)) +{ + return 0; +} + +#endif /* _LIBOBJC */ + +#undef UNUSED + +#endif /* ! GCC_GTHR_SINGLE_H */