diff --git a/contrib/toolchain/gcc/5x/libgcc/Makefile b/contrib/toolchain/gcc/5x/libgcc/Makefile index c394a8ced3..8164497a57 100644 --- a/contrib/toolchain/gcc/5x/libgcc/Makefile +++ b/contrib/toolchain/gcc/5x/libgcc/Makefile @@ -64,10 +64,10 @@ TPBIT_FUNCS = _pack_tf _unpack_tf _addsub_tf _mul_tf _div_tf \ _tf_to_df _tf_to_sf _thenan_tf _tf_to_usi _usi_to_tf # Additional sources to handle exceptions; overridden by targets as needed. -LIB2ADDEH = unwind-dw2.c unwind-dw2-fde.c unwind-sjlj.c unwind-c.c +#LIB2ADDEH = unwind-dw2.c unwind-dw2-fde.c unwind-sjlj.c unwind-c.c LIB2ADDEHSTATIC = $(LIB2ADDEH) -#LIB2ADD = $(srcdir)/config/i386/gthr-win32.c +LIB2ADD = config/i386/gthr-kos32.c EH_MODEL = dw2 CUSTOM_CRTSTUFF = yes @@ -451,7 +451,7 @@ include $(iterator) c_flags := -fexceptions -#libgcc-objects += $(addsuffix $(objext),$(basename $(notdir $(LIB2ADDEH)))) +libgcc-objects += $(addsuffix $(objext),$(basename $(notdir $(LIB2ADDEH)))) iter-items := $(LIB2ADDEH) include $(iterator) diff --git a/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-kos32.c b/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-kos32.c new file mode 100644 index 0000000000..2de5c4674f --- /dev/null +++ b/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-kos32.c @@ -0,0 +1,251 @@ +/* Implementation of Kos32-specific threads compatibility routines for + libgcc2. + +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 +. */ + +#include "gthr-kos32.h" + +#define FUTEX_INIT 0 +#define FUTEX_DESTROY 1 +#define FUTEX_WAIT 2 +#define FUTEX_WAKE 3 + +unsigned int tls_alloc(void); +int tls_free(unsigned int key); +void *tls_get(unsigned int key); +void *tls_set(unsigned int key, void *val); + +#define exchange_acquire(ptr, new) \ + __atomic_exchange_4((ptr), (new), __ATOMIC_ACQUIRE) + +#define exchange_release(ptr, new) \ + __atomic_exchange_4((ptr), (new), __ATOMIC_RELEASE) + + +static inline void yield(void) +{ + __asm__ __volatile__( + "int $0x40" + ::"a"(68), "b"(1)); +}; + + + +int __gthr_kos32_once (__gthread_once_t *once, void (*func) (void)) +{ + if (once == NULL || func == NULL) + return EINVAL; + + if (! once->done) + { + if (__sync_add_and_fetch(&(once->started), 1) == 0) + { + (*func) (); + once->done = 1; + } + else + { + while (! once->done) + yield(); + } + } + return 0; +}; + +int __gthr_kos32_key_create (__gthread_key_t *key, + void (*dtor) (void *) __attribute__((unused))) +{ + int status = 0; + unsigned int tls_index = tls_alloc(); + if (tls_index != 0xFFFFFFFF) + { + *key = tls_index; +#ifdef MINGW32_SUPPORTS_MT_EH + /* Mingw runtime will run the dtors in reverse order for each thread + when the thread exits. */ + status = __mingwthr_key_dtor (*key, dtor); +#endif + } + else + status = -1; + return status; +} + +int __gthr_kos32_key_delete (__gthread_key_t key) +{ + return tls_free(key); +} + +void* __gthr_kos32_getspecific (__gthread_key_t key) +{ + void *ptr; + ptr = tls_get(key); + return ptr; +} + +int __gthr_kos32_setspecific (__gthread_key_t key, const void *ptr) +{ + tls_set(key, CONST_CAST2(void *, const void *, ptr)); + return 0; +} + +void __gthr_kos32_mutex_init_function (__gthread_mutex_t *mutex) +{ + int handle; + + mutex->lock = 0; + + __asm__ volatile( + "int $0x40\t" + :"=a"(handle) + :"a"(77),"b"(FUTEX_INIT),"c"(mutex)); + mutex->handle = handle; +} + +void __gthr_kos32_mutex_destroy (__gthread_mutex_t *mutex) +{ + int retval; + + __asm__ volatile( + "int $0x40\t" + :"=a"(retval) + :"a"(77),"b"(FUTEX_DESTROY),"c"(mutex->handle)); +} + +int __gthr_kos32_mutex_lock (__gthread_mutex_t *mutex) +{ + int tmp; + + if( __sync_fetch_and_add(&mutex->lock, 1) == 0) + return 0; + + while (exchange_acquire (&mutex->lock, 2) != 0) + { + __asm__ volatile( + "int $0x40\t\n" + :"=a"(tmp) + :"a"(77),"b"(FUTEX_WAIT), + "c"(mutex->handle),"d"(2),"S"(0)); + } + return 0; +} + +int __gthr_kos32_mutex_trylock (__gthread_mutex_t *mutex) +{ + int zero = 0; + + return __atomic_compare_exchange_4(&mutex->lock, &zero, 1,0,__ATOMIC_ACQUIRE,__ATOMIC_RELAXED); +} + +int __gthr_kos32_mutex_unlock (__gthread_mutex_t *mutex) +{ + int prev; + + prev = exchange_release (&mutex->lock, 0); + + if (prev != 1) + { + __asm__ volatile( + "int $0x40\t" + :"=a"(prev) + :"a"(77),"b"(FUTEX_WAKE), + "c"(mutex->handle),"d"(1)); + }; + return 0; +} + +void __gthr_kos32_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex) +{ +// mutex->counter = -1; + mutex->depth = 0; + mutex->owner = 0; +// mutex->sema = CreateSemaphoreW (NULL, 0, 65535, NULL); +} + +#if 0 +int +__gthr_win32_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex) +{ + DWORD me = GetCurrentThreadId(); + if (InterlockedIncrement (&mutex->counter) == 0) + { + mutex->depth = 1; + mutex->owner = me; + } + else if (mutex->owner == me) + { + InterlockedDecrement (&mutex->counter); + ++(mutex->depth); + } + else if (WaitForSingleObject (mutex->sema, INFINITE) == WAIT_OBJECT_0) + { + mutex->depth = 1; + mutex->owner = me; + } + else + { + /* WaitForSingleObject returns WAIT_FAILED, and we can only do + some best-effort cleanup here. */ + InterlockedDecrement (&mutex->counter); + return 1; + } + return 0; +} + +int +__gthr_win32_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex) +{ + DWORD me = GetCurrentThreadId(); + if (__GTHR_W32_InterlockedCompareExchange (&mutex->counter, 0, -1) < 0) + { + mutex->depth = 1; + mutex->owner = me; + } + else if (mutex->owner == me) + ++(mutex->depth); + else + return 1; + + return 0; +} + +int +__gthr_win32_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex) +{ + --(mutex->depth); + if (mutex->depth == 0) + { + mutex->owner = 0; + + if (InterlockedDecrement (&mutex->counter) >= 0) + return ReleaseSemaphore (mutex->sema, 1, NULL) ? 0 : 1; + } + + return 0; +} + +int +__gthr_win32_recursive_mutex_destroy (__gthread_recursive_mutex_t *mutex) +{ + CloseHandle ((HANDLE) mutex->sema); + return 0; +} + +#endif diff --git a/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-kos32.h b/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-kos32.h new file mode 100644 index 0000000000..7e169ecf04 --- /dev/null +++ b/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-kos32.h @@ -0,0 +1,216 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ + +/* Copyright (C) 1999-2015 Free Software Foundation, Inc. + Contributed by Mumit Khan . + +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 +. */ + +#ifndef GCC_GTHR_KOS32_H +#define GCC_GTHR_KOS32_H + +/* Make sure CONST_CAST2 (origin in system.h) is declared. */ +#ifndef CONST_CAST2 +#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) +#endif + + +#define __GTHREADS 1 + +#include +#include + +#ifndef __UNUSED_PARAM +#define __UNUSED_PARAM(x) x +#endif + + +#ifdef __cplusplus +extern "C" { +#endif + +typedef unsigned long __gthread_key_t; + +typedef struct +{ + int done; + long started; +} __gthread_once_t; + +typedef struct +{ + volatile int lock; + int handle; +} __gthread_mutex_t; + +typedef struct +{ + volatile int lock; + int handle; + long depth; + unsigned long owner; +} __gthread_recursive_mutex_t; + +#define __GTHREAD_ONCE_INIT {0, -1} +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function + +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION \ + __gthread_recursive_mutex_init_function + + +#if defined (_WIN32) && !defined(__CYGWIN__) +#define MINGW32_SUPPORTS_MT_EH 1 +/* Mingw runtime >= v0.3 provides a magic variable that is set to nonzero + if -mthreads option was specified, or 0 otherwise. This is to get around + the lack of weak symbols in PE-COFF. */ +extern int _CRT_MT; +extern int __mingwthr_key_dtor (unsigned long, void (*) (void *)); +#endif /* _WIN32 && !__CYGWIN__ */ + + +static inline int __gthread_active_p (void) +{ +#ifdef MINGW32_SUPPORTS_MT_EH + return _CRT_MT; +#else + return 1; +#endif +} + +extern int __gthr_kos32_once (__gthread_once_t *, void (*) (void)); +extern int __gthr_kos32_key_create (__gthread_key_t *, void (*) (void*)); +extern int __gthr_kos32_key_delete (__gthread_key_t); +extern void * __gthr_kos32_getspecific (__gthread_key_t); +extern int __gthr_kos32_setspecific (__gthread_key_t, const void *); +extern void __gthr_kos32_mutex_init_function (__gthread_mutex_t *); +extern int __gthr_kos32_mutex_lock (__gthread_mutex_t *); +extern int __gthr_kos32_mutex_trylock (__gthread_mutex_t *); +extern int __gthr_kos32_mutex_unlock (__gthread_mutex_t *); +extern void __gthr_kos32_recursive_mutex_init_function (__gthread_recursive_mutex_t *); +extern int __gthr_kos32_recursive_mutex_lock (__gthread_recursive_mutex_t *); +extern int __gthr_kos32_recursive_mutex_trylock (__gthread_recursive_mutex_t *); +extern int __gthr_kos32_recursive_mutex_unlock (__gthread_recursive_mutex_t *); +extern void __gthr_kos32_mutex_destroy (__gthread_mutex_t *); +extern int __gthr_kos32_recursive_mutex_destroy (__gthread_recursive_mutex_t *); + +static inline int __gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthr_kos32_once (__once, __func); + else + return -1; +} + +static inline int __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthr_kos32_key_create (__key, __dtor); +} + +static inline int __gthread_key_delete (__gthread_key_t __key) +{ + return __gthr_kos32_key_delete (__key); +} + +static inline void* __gthread_getspecific (__gthread_key_t __key) +{ + return __gthr_kos32_getspecific (__key); +} + +static inline int __gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthr_kos32_setspecific (__key, __ptr); +} + +static inline void __gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + __gthr_kos32_mutex_init_function(__mutex); +} + +static inline void __gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + __gthr_kos32_mutex_destroy (__mutex); +} + +static inline int __gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_mutex_lock (__mutex); + else + return 0; +} + +static inline int __gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_mutex_trylock (__mutex); + else + return 0; +} + +static inline int __gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_mutex_unlock (__mutex); + else + return 0; +} + +static inline void __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + __gthr_kos32_recursive_mutex_init_function (__mutex); +} + +static inline int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_recursive_mutex_lock (__mutex); + else + return 0; +} + +static inline int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_recursive_mutex_trylock (__mutex); + else + return 0; +} + +static inline int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_recursive_mutex_unlock (__mutex); + else + return 0; +} + +static inline int __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) +{ + return __gthr_kos32_recursive_mutex_destroy (__mutex); +} + + +#ifdef __cplusplus +} +#endif + +#endif /* ! GCC_GTHR_WIN32_H */ diff --git a/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-win32.c b/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-win32.c deleted file mode 100644 index 8492d54c4a..0000000000 --- a/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-win32.c +++ /dev/null @@ -1,267 +0,0 @@ -/* Implementation of W32-specific threads compatibility routines for - libgcc2. */ - -/* Copyright (C) 1999-2015 Free Software Foundation, Inc. - Contributed by Mumit Khan . - Modified and moved to separate file by Danny Smith - . - -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 -. */ - -#include -#ifndef __GTHREAD_HIDE_WIN32API -# define __GTHREAD_HIDE_WIN32API 1 -#endif -#undef __GTHREAD_I486_INLINE_LOCK_PRIMITIVES -#define __GTHREAD_I486_INLINE_LOCK_PRIMITIVES -#include "gthr-win32.h" - -/* Windows32 threads specific definitions. The windows32 threading model - does not map well into pthread-inspired gcc's threading model, and so - there are caveats one needs to be aware of. - - 1. The destructor supplied to __gthread_key_create is ignored for - generic x86-win32 ports. This will certainly cause memory leaks - due to unreclaimed eh contexts (sizeof (eh_context) is at least - 24 bytes for x86 currently). - - This memory leak may be significant for long-running applications - that make heavy use of C++ EH. - - However, Mingw runtime (version 0.3 or newer) provides a mechanism - to emulate pthreads key dtors; the runtime provides a special DLL, - linked in if -mthreads option is specified, that runs the dtors in - the reverse order of registration when each thread exits. If - -mthreads option is not given, a stub is linked in instead of the - DLL, which results in memory leak. Other x86-win32 ports can use - the same technique of course to avoid the leak. - - 2. The error codes returned are non-POSIX like, and cast into ints. - This may cause incorrect error return due to truncation values on - hw where sizeof (DWORD) > sizeof (int). - - 3. We are currently using a special mutex instead of the Critical - Sections, since Win9x does not support TryEnterCriticalSection - (while NT does). - - The basic framework should work well enough. In the long term, GCC - needs to use Structured Exception Handling on Windows32. */ - -int -__gthr_win32_once (__gthread_once_t *once, void (*func) (void)) -{ - if (once == NULL || func == NULL) - return EINVAL; - - if (! once->done) - { - if (InterlockedIncrement (&(once->started)) == 0) - { - (*func) (); - once->done = TRUE; - } - else - { - /* Another thread is currently executing the code, so wait for it - to finish; yield the CPU in the meantime. If performance - does become an issue, the solution is to use an Event that - we wait on here (and set above), but that implies a place to - create the event before this routine is called. */ - while (! once->done) - Sleep (0); - } - } - return 0; -} - -/* Windows32 thread local keys don't support destructors; this leads to - leaks, especially in threaded applications making extensive use of - C++ EH. Mingw uses a thread-support DLL to work-around this problem. */ - -int -__gthr_win32_key_create (__gthread_key_t *key, - void (*dtor) (void *) __attribute__((unused))) -{ - int status = 0; - DWORD tls_index = TlsAlloc (); - if (tls_index != 0xFFFFFFFF) - { - *key = tls_index; -#ifdef MINGW32_SUPPORTS_MT_EH - /* Mingw runtime will run the dtors in reverse order for each thread - when the thread exits. */ - status = __mingwthr_key_dtor (*key, dtor); -#endif - } - else - status = (int) GetLastError (); - return status; -} - -int -__gthr_win32_key_delete (__gthread_key_t key) -{ - return (TlsFree (key) != 0) ? 0 : (int) GetLastError (); -} - -void * -__gthr_win32_getspecific (__gthread_key_t key) -{ - DWORD lasterror; - void *ptr; - lasterror = GetLastError(); - ptr = TlsGetValue(key); - SetLastError( lasterror ); - return ptr; -} - -int -__gthr_win32_setspecific (__gthread_key_t key, const void *ptr) -{ - if (TlsSetValue (key, CONST_CAST2(void *, const void *, ptr)) != 0) - return 0; - else - return GetLastError (); -} - -void -__gthr_win32_mutex_init_function (__gthread_mutex_t *mutex) -{ - mutex->counter = -1; - mutex->sema = CreateSemaphoreW (NULL, 0, 65535, NULL); -} - -void -__gthr_win32_mutex_destroy (__gthread_mutex_t *mutex) -{ - CloseHandle ((HANDLE) mutex->sema); -} - -int -__gthr_win32_mutex_lock (__gthread_mutex_t *mutex) -{ - if (InterlockedIncrement (&mutex->counter) == 0 || - WaitForSingleObject (mutex->sema, INFINITE) == WAIT_OBJECT_0) - return 0; - else - { - /* WaitForSingleObject returns WAIT_FAILED, and we can only do - some best-effort cleanup here. */ - InterlockedDecrement (&mutex->counter); - return 1; - } -} - -int -__gthr_win32_mutex_trylock (__gthread_mutex_t *mutex) -{ - if (__GTHR_W32_InterlockedCompareExchange (&mutex->counter, 0, -1) < 0) - return 0; - else - return 1; -} - -int -__gthr_win32_mutex_unlock (__gthread_mutex_t *mutex) -{ - if (InterlockedDecrement (&mutex->counter) >= 0) - return ReleaseSemaphore (mutex->sema, 1, NULL) ? 0 : 1; - else - return 0; -} - -void -__gthr_win32_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex) -{ - mutex->counter = -1; - mutex->depth = 0; - mutex->owner = 0; - mutex->sema = CreateSemaphoreW (NULL, 0, 65535, NULL); -} - -int -__gthr_win32_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex) -{ - DWORD me = GetCurrentThreadId(); - if (InterlockedIncrement (&mutex->counter) == 0) - { - mutex->depth = 1; - mutex->owner = me; - } - else if (mutex->owner == me) - { - InterlockedDecrement (&mutex->counter); - ++(mutex->depth); - } - else if (WaitForSingleObject (mutex->sema, INFINITE) == WAIT_OBJECT_0) - { - mutex->depth = 1; - mutex->owner = me; - } - else - { - /* WaitForSingleObject returns WAIT_FAILED, and we can only do - some best-effort cleanup here. */ - InterlockedDecrement (&mutex->counter); - return 1; - } - return 0; -} - -int -__gthr_win32_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex) -{ - DWORD me = GetCurrentThreadId(); - if (__GTHR_W32_InterlockedCompareExchange (&mutex->counter, 0, -1) < 0) - { - mutex->depth = 1; - mutex->owner = me; - } - else if (mutex->owner == me) - ++(mutex->depth); - else - return 1; - - return 0; -} - -int -__gthr_win32_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex) -{ - --(mutex->depth); - if (mutex->depth == 0) - { - mutex->owner = 0; - - if (InterlockedDecrement (&mutex->counter) >= 0) - return ReleaseSemaphore (mutex->sema, 1, NULL) ? 0 : 1; - } - - return 0; -} - -int -__gthr_win32_recursive_mutex_destroy (__gthread_recursive_mutex_t *mutex) -{ - CloseHandle ((HANDLE) mutex->sema); - return 0; -} diff --git a/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-win32.h b/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-win32.h deleted file mode 100644 index 3f3e308027..0000000000 --- a/contrib/toolchain/gcc/5x/libgcc/config/i386/gthr-win32.h +++ /dev/null @@ -1,786 +0,0 @@ -/* Threads compatibility routines for libgcc2 and libobjc. */ -/* Compile this one with gcc. */ - -/* Copyright (C) 1999-2015 Free Software Foundation, Inc. - Contributed by Mumit Khan . - -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 -. */ - -#ifndef GCC_GTHR_WIN32_H -#define GCC_GTHR_WIN32_H - -/* Make sure CONST_CAST2 (origin in system.h) is declared. */ -#ifndef CONST_CAST2 -#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) -#endif - -/* Windows32 threads specific definitions. The windows32 threading model - does not map well into pthread-inspired gcc's threading model, and so - there are caveats one needs to be aware of. - - 1. The destructor supplied to __gthread_key_create is ignored for - generic x86-win32 ports. This will certainly cause memory leaks - due to unreclaimed eh contexts (sizeof (eh_context) is at least - 24 bytes for x86 currently). - - This memory leak may be significant for long-running applications - that make heavy use of C++ EH. - - However, Mingw runtime (version 0.3 or newer) provides a mechanism - to emulate pthreads key dtors; the runtime provides a special DLL, - linked in if -mthreads option is specified, that runs the dtors in - the reverse order of registration when each thread exits. If - -mthreads option is not given, a stub is linked in instead of the - DLL, which results in memory leak. Other x86-win32 ports can use - the same technique of course to avoid the leak. - - 2. The error codes returned are non-POSIX like, and cast into ints. - This may cause incorrect error return due to truncation values on - hw where sizeof (DWORD) > sizeof (int). - - 3. We are currently using a special mutex instead of the Critical - Sections, since Win9x does not support TryEnterCriticalSection - (while NT does). - - The basic framework should work well enough. In the long term, GCC - needs to use Structured Exception Handling on Windows32. */ - -#define __GTHREADS 1 - -#include -#ifdef __MINGW32__ -#include <_mingw.h> -#endif - -#ifndef __UNUSED_PARAM -#define __UNUSED_PARAM(x) x -#endif - -#ifdef _LIBOBJC - -/* This is necessary to prevent windef.h (included from windows.h) from - defining its own BOOL as a typedef. */ -#ifndef __OBJC__ -#define __OBJC__ -#endif -#include -/* Now undef the windows BOOL. */ -#undef BOOL - -/* Key structure for maintaining thread specific storage */ -static DWORD __gthread_objc_data_tls = (DWORD) -1; - -/* Backend initialization functions */ - -/* Initialize the threads subsystem. */ -int -__gthread_objc_init_thread_system (void) -{ - /* Initialize the thread storage key. */ - if ((__gthread_objc_data_tls = TlsAlloc ()) != (DWORD) -1) - return 0; - else - return -1; -} - -/* Close the threads subsystem. */ -int -__gthread_objc_close_thread_system (void) -{ - if (__gthread_objc_data_tls != (DWORD) -1) - TlsFree (__gthread_objc_data_tls); - return 0; -} - -/* Backend thread functions */ - -/* Create a new thread of execution. */ -objc_thread_t -__gthread_objc_thread_detach (void (*func)(void *arg), void *arg) -{ - DWORD thread_id = 0; - HANDLE win32_handle; - - if (!(win32_handle = CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) func, - arg, 0, &thread_id))) - thread_id = 0; - - return (objc_thread_t) (INT_PTR) thread_id; -} - -/* Set the current thread's priority. */ -int -__gthread_objc_thread_set_priority (int priority) -{ - int sys_priority = 0; - - switch (priority) - { - case OBJC_THREAD_INTERACTIVE_PRIORITY: - sys_priority = THREAD_PRIORITY_NORMAL; - break; - default: - case OBJC_THREAD_BACKGROUND_PRIORITY: - sys_priority = THREAD_PRIORITY_BELOW_NORMAL; - break; - case OBJC_THREAD_LOW_PRIORITY: - sys_priority = THREAD_PRIORITY_LOWEST; - break; - } - - /* Change priority */ - if (SetThreadPriority (GetCurrentThread (), sys_priority)) - return 0; - else - return -1; -} - -/* Return the current thread's priority. */ -int -__gthread_objc_thread_get_priority (void) -{ - int sys_priority; - - sys_priority = GetThreadPriority (GetCurrentThread ()); - - switch (sys_priority) - { - case THREAD_PRIORITY_HIGHEST: - case THREAD_PRIORITY_TIME_CRITICAL: - case THREAD_PRIORITY_ABOVE_NORMAL: - case THREAD_PRIORITY_NORMAL: - return OBJC_THREAD_INTERACTIVE_PRIORITY; - - default: - case THREAD_PRIORITY_BELOW_NORMAL: - return OBJC_THREAD_BACKGROUND_PRIORITY; - - case THREAD_PRIORITY_IDLE: - case THREAD_PRIORITY_LOWEST: - return OBJC_THREAD_LOW_PRIORITY; - } - - /* Couldn't get priority. */ - return -1; -} - -/* Yield our process time to another thread. */ -void -__gthread_objc_thread_yield (void) -{ - Sleep (0); -} - -/* Terminate the current thread. */ -int -__gthread_objc_thread_exit (void) -{ - /* exit the thread */ - ExitThread (__objc_thread_exit_status); - - /* Failed if we reached here */ - return -1; -} - -/* Returns an integer value which uniquely describes a thread. */ -objc_thread_t -__gthread_objc_thread_id (void) -{ - return (objc_thread_t) (INT_PTR) GetCurrentThreadId (); -} - -/* Sets the thread's local storage pointer. */ -int -__gthread_objc_thread_set_data (void *value) -{ - if (TlsSetValue (__gthread_objc_data_tls, value)) - return 0; - else - return -1; -} - -/* Returns the thread's local storage pointer. */ -void * -__gthread_objc_thread_get_data (void) -{ - DWORD lasterror; - void *ptr; - - lasterror = GetLastError (); - - ptr = TlsGetValue (__gthread_objc_data_tls); /* Return thread data. */ - - SetLastError (lasterror); - - return ptr; -} - -/* Backend mutex functions */ - -/* Allocate a mutex. */ -int -__gthread_objc_mutex_allocate (objc_mutex_t mutex) -{ - if ((mutex->backend = (void *) CreateMutex (NULL, 0, NULL)) == NULL) - return -1; - else - return 0; -} - -/* Deallocate a mutex. */ -int -__gthread_objc_mutex_deallocate (objc_mutex_t mutex) -{ - CloseHandle ((HANDLE) (mutex->backend)); - return 0; -} - -/* Grab a lock on a mutex. */ -int -__gthread_objc_mutex_lock (objc_mutex_t mutex) -{ - int status; - - status = WaitForSingleObject ((HANDLE) (mutex->backend), INFINITE); - if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED) - return -1; - else - return 0; -} - -/* Try to grab a lock on a mutex. */ -int -__gthread_objc_mutex_trylock (objc_mutex_t mutex) -{ - int status; - - status = WaitForSingleObject ((HANDLE) (mutex->backend), 0); - if (status != WAIT_OBJECT_0 && status != WAIT_ABANDONED) - return -1; - else - return 0; -} - -/* Unlock the mutex */ -int -__gthread_objc_mutex_unlock (objc_mutex_t mutex) -{ - if (ReleaseMutex ((HANDLE) (mutex->backend)) == 0) - return -1; - else - return 0; -} - -/* Backend condition mutex functions */ - -/* Allocate a condition. */ -int -__gthread_objc_condition_allocate (objc_condition_t __UNUSED_PARAM(condition)) -{ - /* Unimplemented. */ - return -1; -} - -/* Deallocate a condition. */ -int -__gthread_objc_condition_deallocate (objc_condition_t __UNUSED_PARAM(condition)) -{ - /* Unimplemented. */ - return -1; -} - -/* Wait on the condition */ -int -__gthread_objc_condition_wait (objc_condition_t __UNUSED_PARAM(condition), - objc_mutex_t __UNUSED_PARAM(mutex)) -{ - /* Unimplemented. */ - return -1; -} - -/* Wake up all threads waiting on this condition. */ -int -__gthread_objc_condition_broadcast (objc_condition_t __UNUSED_PARAM(condition)) -{ - /* Unimplemented. */ - return -1; -} - -/* Wake up one thread waiting on this condition. */ -int -__gthread_objc_condition_signal (objc_condition_t __UNUSED_PARAM(condition)) -{ - /* Unimplemented. */ - return -1; -} - -#else /* _LIBOBJC */ - -#ifdef __cplusplus -extern "C" { -#endif - -typedef unsigned long __gthread_key_t; - -typedef struct { - int done; - long started; -} __gthread_once_t; - -typedef struct { - long counter; - void *sema; -} __gthread_mutex_t; - -typedef struct { - long counter; - long depth; - unsigned long owner; - void *sema; -} __gthread_recursive_mutex_t; - -#define __GTHREAD_ONCE_INIT {0, -1} -#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function -#define __GTHREAD_MUTEX_INIT_DEFAULT {-1, 0} -#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION \ - __gthread_recursive_mutex_init_function -#define __GTHREAD_RECURSIVE_MUTEX_INIT_DEFAULT {-1, 0, 0, 0} - -#if defined (_WIN32) && !defined(__CYGWIN__) -#define MINGW32_SUPPORTS_MT_EH 1 -/* Mingw runtime >= v0.3 provides a magic variable that is set to nonzero - if -mthreads option was specified, or 0 otherwise. This is to get around - the lack of weak symbols in PE-COFF. */ -extern int _CRT_MT; -extern int __mingwthr_key_dtor (unsigned long, void (*) (void *)); -#endif /* _WIN32 && !__CYGWIN__ */ - -/* The Windows95 kernel does not export InterlockedCompareExchange. - This provides a substitute. When building apps that reference - gthread_mutex_try_lock, the __GTHREAD_I486_INLINE_LOCK_PRIMITIVES - macro must be defined if Windows95 is a target. Currently - gthread_mutex_try_lock is not referenced by libgcc or libstdc++. */ -#ifdef __GTHREAD_I486_INLINE_LOCK_PRIMITIVES -static inline long -__gthr_i486_lock_cmp_xchg(long *__dest, long __xchg, long __comperand) -{ - long result; - __asm__ __volatile__ ("\n\ - lock\n\ - cmpxchg{l} {%4, %1|%1, %4}\n" - : "=a" (result), "=m" (*__dest) - : "0" (__comperand), "m" (*__dest), "r" (__xchg) - : "cc"); - return result; -} -#define __GTHR_W32_InterlockedCompareExchange __gthr_i486_lock_cmp_xchg -#else /* __GTHREAD_I486_INLINE_LOCK_PRIMITIVES */ -#define __GTHR_W32_InterlockedCompareExchange InterlockedCompareExchange -#endif /* __GTHREAD_I486_INLINE_LOCK_PRIMITIVES */ - -static inline int -__gthread_active_p (void) -{ -#ifdef MINGW32_SUPPORTS_MT_EH - return _CRT_MT; -#else - return 1; -#endif -} - -#if __GTHREAD_HIDE_WIN32API - -/* The implementations are in config/i386/gthr-win32.c in libgcc.a. - Only stubs are exposed to avoid polluting the C++ namespace with - windows api definitions. */ - -extern int __gthr_win32_once (__gthread_once_t *, void (*) (void)); -extern int __gthr_win32_key_create (__gthread_key_t *, void (*) (void*)); -extern int __gthr_win32_key_delete (__gthread_key_t); -extern void * __gthr_win32_getspecific (__gthread_key_t); -extern int __gthr_win32_setspecific (__gthread_key_t, const void *); -extern void __gthr_win32_mutex_init_function (__gthread_mutex_t *); -extern int __gthr_win32_mutex_lock (__gthread_mutex_t *); -extern int __gthr_win32_mutex_trylock (__gthread_mutex_t *); -extern int __gthr_win32_mutex_unlock (__gthread_mutex_t *); -extern void - __gthr_win32_recursive_mutex_init_function (__gthread_recursive_mutex_t *); -extern int __gthr_win32_recursive_mutex_lock (__gthread_recursive_mutex_t *); -extern int - __gthr_win32_recursive_mutex_trylock (__gthread_recursive_mutex_t *); -extern int __gthr_win32_recursive_mutex_unlock (__gthread_recursive_mutex_t *); -extern void __gthr_win32_mutex_destroy (__gthread_mutex_t *); -extern int - __gthr_win32_recursive_mutex_destroy (__gthread_recursive_mutex_t *); - -static inline int -__gthread_once (__gthread_once_t *__once, void (*__func) (void)) -{ - if (__gthread_active_p ()) - return __gthr_win32_once (__once, __func); - else - return -1; -} - -static inline int -__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) -{ - return __gthr_win32_key_create (__key, __dtor); -} - -static inline int -__gthread_key_delete (__gthread_key_t __key) -{ - return __gthr_win32_key_delete (__key); -} - -static inline void * -__gthread_getspecific (__gthread_key_t __key) -{ - return __gthr_win32_getspecific (__key); -} - -static inline int -__gthread_setspecific (__gthread_key_t __key, const void *__ptr) -{ - return __gthr_win32_setspecific (__key, __ptr); -} - -static inline void -__gthread_mutex_init_function (__gthread_mutex_t *__mutex) -{ - __gthr_win32_mutex_init_function (__mutex); -} - -static inline void -__gthread_mutex_destroy (__gthread_mutex_t *__mutex) -{ - __gthr_win32_mutex_destroy (__mutex); -} - -static inline int -__gthread_mutex_lock (__gthread_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - return __gthr_win32_mutex_lock (__mutex); - else - return 0; -} - -static inline int -__gthread_mutex_trylock (__gthread_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - return __gthr_win32_mutex_trylock (__mutex); - else - return 0; -} - -static inline int -__gthread_mutex_unlock (__gthread_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - return __gthr_win32_mutex_unlock (__mutex); - else - return 0; -} - -static inline void -__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) -{ - __gthr_win32_recursive_mutex_init_function (__mutex); -} - -static inline int -__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - return __gthr_win32_recursive_mutex_lock (__mutex); - else - return 0; -} - -static inline int -__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - return __gthr_win32_recursive_mutex_trylock (__mutex); - else - return 0; -} - -static inline int -__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - return __gthr_win32_recursive_mutex_unlock (__mutex); - else - return 0; -} - -static inline int -__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) -{ - return __gthr_win32_recursive_mutex_destroy (__mutex); -} - -#else /* ! __GTHREAD_HIDE_WIN32API */ - -#include -#include - -static inline int -__gthread_once (__gthread_once_t *__once, void (*__func) (void)) -{ - if (! __gthread_active_p ()) - return -1; - else if (__once == NULL || __func == NULL) - return EINVAL; - - if (! __once->done) - { - if (InterlockedIncrement (&(__once->started)) == 0) - { - (*__func) (); - __once->done = TRUE; - } - else - { - /* Another thread is currently executing the code, so wait for it - to finish; yield the CPU in the meantime. If performance - does become an issue, the solution is to use an Event that - we wait on here (and set above), but that implies a place to - create the event before this routine is called. */ - while (! __once->done) - Sleep (0); - } - } - - return 0; -} - -/* Windows32 thread local keys don't support destructors; this leads to - leaks, especially in threaded applications making extensive use of - C++ EH. Mingw uses a thread-support DLL to work-around this problem. */ -static inline int -__gthread_key_create (__gthread_key_t *__key, - void (*__dtor) (void *) __attribute__((__unused__))) -{ - int __status = 0; - DWORD __tls_index = TlsAlloc (); - if (__tls_index != 0xFFFFFFFF) - { - *__key = __tls_index; -#ifdef MINGW32_SUPPORTS_MT_EH - /* Mingw runtime will run the dtors in reverse order for each thread - when the thread exits. */ - __status = __mingwthr_key_dtor (*__key, __dtor); -#endif - } - else - __status = (int) GetLastError (); - return __status; -} - -static inline int -__gthread_key_delete (__gthread_key_t __key) -{ - return (TlsFree (__key) != 0) ? 0 : (int) GetLastError (); -} - -static inline void * -__gthread_getspecific (__gthread_key_t __key) -{ - DWORD __lasterror; - void *__ptr; - - __lasterror = GetLastError (); - - __ptr = TlsGetValue (__key); - - SetLastError (__lasterror); - - return __ptr; -} - -static inline int -__gthread_setspecific (__gthread_key_t __key, const void *__ptr) -{ - if (TlsSetValue (__key, CONST_CAST2(void *, const void *, __ptr)) != 0) - return 0; - else - return GetLastError (); -} - -static inline void -__gthread_mutex_init_function (__gthread_mutex_t *__mutex) -{ - __mutex->counter = -1; - __mutex->sema = CreateSemaphoreW (NULL, 0, 65535, NULL); -} - -static inline void -__gthread_mutex_destroy (__gthread_mutex_t *__mutex) -{ - CloseHandle ((HANDLE) __mutex->sema); -} - -static inline int -__gthread_mutex_lock (__gthread_mutex_t *__mutex) -{ - int __status = 0; - - if (__gthread_active_p ()) - { - if (InterlockedIncrement (&__mutex->counter) == 0 || - WaitForSingleObject (__mutex->sema, INFINITE) == WAIT_OBJECT_0) - __status = 0; - else - { - /* WaitForSingleObject returns WAIT_FAILED, and we can only do - some best-effort cleanup here. */ - InterlockedDecrement (&__mutex->counter); - __status = 1; - } - } - return __status; -} - -static inline int -__gthread_mutex_trylock (__gthread_mutex_t *__mutex) -{ - int __status = 0; - - if (__gthread_active_p ()) - { - if (__GTHR_W32_InterlockedCompareExchange (&__mutex->counter, 0, -1) < 0) - __status = 0; - else - __status = 1; - } - return __status; -} - -static inline int -__gthread_mutex_unlock (__gthread_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - { - if (InterlockedDecrement (&__mutex->counter) >= 0) - return ReleaseSemaphore (__mutex->sema, 1, NULL) ? 0 : 1; - } - return 0; -} - -static inline void -__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) -{ - __mutex->counter = -1; - __mutex->depth = 0; - __mutex->owner = 0; - __mutex->sema = CreateSemaphoreW (NULL, 0, 65535, NULL); -} - -static inline int -__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - { - DWORD __me = GetCurrentThreadId(); - if (InterlockedIncrement (&__mutex->counter) == 0) - { - __mutex->depth = 1; - __mutex->owner = __me; - } - else if (__mutex->owner == __me) - { - InterlockedDecrement (&__mutex->counter); - ++(__mutex->depth); - } - else if (WaitForSingleObject (__mutex->sema, INFINITE) == WAIT_OBJECT_0) - { - __mutex->depth = 1; - __mutex->owner = __me; - } - else - { - /* WaitForSingleObject returns WAIT_FAILED, and we can only do - some best-effort cleanup here. */ - InterlockedDecrement (&__mutex->counter); - return 1; - } - } - return 0; -} - -static inline int -__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - { - DWORD __me = GetCurrentThreadId(); - if (__GTHR_W32_InterlockedCompareExchange (&__mutex->counter, 0, -1) < 0) - { - __mutex->depth = 1; - __mutex->owner = __me; - } - else if (__mutex->owner == __me) - ++(__mutex->depth); - else - return 1; - } - return 0; -} - -static inline int -__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) -{ - if (__gthread_active_p ()) - { - --(__mutex->depth); - if (__mutex->depth == 0) - { - __mutex->owner = 0; - - if (InterlockedDecrement (&__mutex->counter) >= 0) - return ReleaseSemaphore (__mutex->sema, 1, NULL) ? 0 : 1; - } - } - return 0; -} - -static inline int -__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) -{ - CloseHandle ((HANDLE) __mutex->sema); - return 0; -} - -#endif /* __GTHREAD_HIDE_WIN32API */ - -#ifdef __cplusplus -} -#endif - -#endif /* _LIBOBJC */ - -#endif /* ! GCC_GTHR_WIN32_H */ diff --git a/contrib/toolchain/gcc/5x/libgcc/gthr-default.h b/contrib/toolchain/gcc/5x/libgcc/gthr-default.h new file mode 100644 index 0000000000..7e169ecf04 --- /dev/null +++ b/contrib/toolchain/gcc/5x/libgcc/gthr-default.h @@ -0,0 +1,216 @@ +/* Threads compatibility routines for libgcc2 and libobjc. */ +/* Compile this one with gcc. */ + +/* Copyright (C) 1999-2015 Free Software Foundation, Inc. + Contributed by Mumit Khan . + +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 +. */ + +#ifndef GCC_GTHR_KOS32_H +#define GCC_GTHR_KOS32_H + +/* Make sure CONST_CAST2 (origin in system.h) is declared. */ +#ifndef CONST_CAST2 +#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) +#endif + + +#define __GTHREADS 1 + +#include +#include + +#ifndef __UNUSED_PARAM +#define __UNUSED_PARAM(x) x +#endif + + +#ifdef __cplusplus +extern "C" { +#endif + +typedef unsigned long __gthread_key_t; + +typedef struct +{ + int done; + long started; +} __gthread_once_t; + +typedef struct +{ + volatile int lock; + int handle; +} __gthread_mutex_t; + +typedef struct +{ + volatile int lock; + int handle; + long depth; + unsigned long owner; +} __gthread_recursive_mutex_t; + +#define __GTHREAD_ONCE_INIT {0, -1} +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function + +#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION \ + __gthread_recursive_mutex_init_function + + +#if defined (_WIN32) && !defined(__CYGWIN__) +#define MINGW32_SUPPORTS_MT_EH 1 +/* Mingw runtime >= v0.3 provides a magic variable that is set to nonzero + if -mthreads option was specified, or 0 otherwise. This is to get around + the lack of weak symbols in PE-COFF. */ +extern int _CRT_MT; +extern int __mingwthr_key_dtor (unsigned long, void (*) (void *)); +#endif /* _WIN32 && !__CYGWIN__ */ + + +static inline int __gthread_active_p (void) +{ +#ifdef MINGW32_SUPPORTS_MT_EH + return _CRT_MT; +#else + return 1; +#endif +} + +extern int __gthr_kos32_once (__gthread_once_t *, void (*) (void)); +extern int __gthr_kos32_key_create (__gthread_key_t *, void (*) (void*)); +extern int __gthr_kos32_key_delete (__gthread_key_t); +extern void * __gthr_kos32_getspecific (__gthread_key_t); +extern int __gthr_kos32_setspecific (__gthread_key_t, const void *); +extern void __gthr_kos32_mutex_init_function (__gthread_mutex_t *); +extern int __gthr_kos32_mutex_lock (__gthread_mutex_t *); +extern int __gthr_kos32_mutex_trylock (__gthread_mutex_t *); +extern int __gthr_kos32_mutex_unlock (__gthread_mutex_t *); +extern void __gthr_kos32_recursive_mutex_init_function (__gthread_recursive_mutex_t *); +extern int __gthr_kos32_recursive_mutex_lock (__gthread_recursive_mutex_t *); +extern int __gthr_kos32_recursive_mutex_trylock (__gthread_recursive_mutex_t *); +extern int __gthr_kos32_recursive_mutex_unlock (__gthread_recursive_mutex_t *); +extern void __gthr_kos32_mutex_destroy (__gthread_mutex_t *); +extern int __gthr_kos32_recursive_mutex_destroy (__gthread_recursive_mutex_t *); + +static inline int __gthread_once (__gthread_once_t *__once, void (*__func) (void)) +{ + if (__gthread_active_p ()) + return __gthr_kos32_once (__once, __func); + else + return -1; +} + +static inline int __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) +{ + return __gthr_kos32_key_create (__key, __dtor); +} + +static inline int __gthread_key_delete (__gthread_key_t __key) +{ + return __gthr_kos32_key_delete (__key); +} + +static inline void* __gthread_getspecific (__gthread_key_t __key) +{ + return __gthr_kos32_getspecific (__key); +} + +static inline int __gthread_setspecific (__gthread_key_t __key, const void *__ptr) +{ + return __gthr_kos32_setspecific (__key, __ptr); +} + +static inline void __gthread_mutex_init_function (__gthread_mutex_t *__mutex) +{ + __gthr_kos32_mutex_init_function(__mutex); +} + +static inline void __gthread_mutex_destroy (__gthread_mutex_t *__mutex) +{ + __gthr_kos32_mutex_destroy (__mutex); +} + +static inline int __gthread_mutex_lock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_mutex_lock (__mutex); + else + return 0; +} + +static inline int __gthread_mutex_trylock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_mutex_trylock (__mutex); + else + return 0; +} + +static inline int __gthread_mutex_unlock (__gthread_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_mutex_unlock (__mutex); + else + return 0; +} + +static inline void __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) +{ + __gthr_kos32_recursive_mutex_init_function (__mutex); +} + +static inline int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_recursive_mutex_lock (__mutex); + else + return 0; +} + +static inline int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_recursive_mutex_trylock (__mutex); + else + return 0; +} + +static inline int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) +{ + if (__gthread_active_p ()) + return __gthr_kos32_recursive_mutex_unlock (__mutex); + else + return 0; +} + +static inline int __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) +{ + return __gthr_kos32_recursive_mutex_destroy (__mutex); +} + + +#ifdef __cplusplus +} +#endif + +#endif /* ! GCC_GTHR_WIN32_H */