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/* Threads compatibility routines for libgcc2. */ |
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/* Compile this one with gcc. */ |
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/* Copyright (C) 1997, 1998, 2004, 2008, 2009 Free Software Foundation, Inc. |
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This file is part of GCC. |
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GCC is free software; you can redistribute it and/or modify it under |
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the terms of the GNU General Public License as published by the Free |
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Software Foundation; either version 3, or (at your option) any later |
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version. |
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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for more details. |
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Under Section 7 of GPL version 3, you are granted additional |
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permissions described in the GCC Runtime Library Exception, version |
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3.1, as published by the Free Software Foundation. |
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You should have received a copy of the GNU General Public License and |
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a copy of the GCC Runtime Library Exception along with this program; |
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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. */ |
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#ifndef GCC_GTHR_H |
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#define GCC_GTHR_H |
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typedef unsigned int __gthread_key_t; |
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typedef struct { |
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volatile int done; |
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int started; |
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} __gthread_once_t; |
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typedef struct { |
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volatile int counter; |
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} __gthread_mutex_t; |
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void *tls_alloc(void); |
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static int __gthread_mutex_lock (__gthread_mutex_t *mutex) |
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{ |
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__mutex_lock(&mutex->counter); |
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return 0; |
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}; |
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static int __gthread_mutex_unlock (__gthread_mutex_t *mutex) |
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{ |
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mutex->counter = 0; |
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return 0; |
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}; |
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static inline int __gthread_key_create (__gthread_key_t *__key, |
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void (*__dtor) (void *) __attribute__((unused))) |
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{ |
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int __status = 0; |
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void *__tls_index = tls_alloc(); |
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if (__tls_index != NULL) |
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{ |
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*__key = (unsigned int)__tls_index; |
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#ifdef MINGW32_SUPPORTS_MT_EH /* FIXME */ |
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/* Mingw runtime will run the dtors in reverse order for each thread |
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when the thread exits. */ |
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// __status = __mingwthr_key_dtor (*__key, __dtor); |
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#endif |
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} |
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else |
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__status = (int) ENOMEM; |
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return __status; |
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} |
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static inline void * |
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__gthread_getspecific (__gthread_key_t __key) |
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{ |
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void *val; |
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__asm__ __volatile__( |
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"movl %%fs:(%1), %0" |
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:"=r"(val) |
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:"r"(__key)); |
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return val; |
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}; |
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static inline int |
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__gthread_setspecific (__gthread_key_t __key, const void *__ptr) |
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{ |
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if(!(__key & 3)) |
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{ |
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__asm__ __volatile__( |
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"movl %0, %%fs:(%1)" |
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::"r"(__ptr),"r"(__key)); |
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return 0; |
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} |
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else return EINVAL; |
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} |
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#endif |