mirror of
https://github.com/git-for-windows/git.git
synced 2026-03-02 06:23:48 -06:00
83f306a89e
The mingw-w64 GCC seems to link implicitly to libwinpthread, which does implement a pthread emulation (that is more complete than Git's). Let's keep preferring Git's. To avoid linker errors where it thinks that the `pthread_self` and the `pthread_create` symbols are defined twice, let's give our version a `win32_` prefix, just like we already do for `pthread_join()`. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
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* Header used to adapt pthread-based POSIX code to Windows API threads.
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*
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* Copyright (C) 2009 Andrzej K. Haczewski <ahaczewski@gmail.com>
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*/
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#ifndef PTHREAD_H
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#define PTHREAD_H
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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/*
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* Defines that adapt Windows API threads to pthreads API
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*/
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#define pthread_mutex_t CRITICAL_SECTION
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static inline int return_0(int i UNUSED) {
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return 0;
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}
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#define pthread_mutex_init(a,b) return_0((InitializeCriticalSection((a)), 0))
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#define pthread_mutex_destroy(a) DeleteCriticalSection((a))
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#define pthread_mutex_lock EnterCriticalSection
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#define pthread_mutex_unlock LeaveCriticalSection
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typedef int pthread_mutexattr_t;
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#define pthread_mutexattr_init(a) (*(a) = 0)
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#define pthread_mutexattr_destroy(a) do {} while (0)
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#define pthread_mutexattr_settype(a, t) 0
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#define PTHREAD_MUTEX_RECURSIVE 0
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#define pthread_cond_t CONDITION_VARIABLE
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#define pthread_cond_init(a,b) InitializeConditionVariable((a))
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#define pthread_cond_destroy(a) do {} while (0)
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#define pthread_cond_wait(a,b) return_0(SleepConditionVariableCS((a), (b), INFINITE))
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#define pthread_cond_signal WakeConditionVariable
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#define pthread_cond_broadcast WakeAllConditionVariable
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/*
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* Simple thread creation implementation using pthread API
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*/
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typedef struct {
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HANDLE handle;
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void *(*start_routine)(void*);
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void *arg;
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DWORD tid;
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} pthread_t;
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int win32_pthread_create(pthread_t *thread, const void *unused,
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void *(*start_routine)(void*), void *arg);
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#define pthread_create win32_pthread_create
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/*
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* To avoid the need of copying a struct, we use small macro wrapper to pass
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* pointer to win32_pthread_join instead.
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*/
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#define pthread_join(a, b) win32_pthread_join(&(a), (b))
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int win32_pthread_join(pthread_t *thread, void **value_ptr);
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#define pthread_equal(t1, t2) ((t1).tid == (t2).tid)
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pthread_t win32_pthread_self(void);
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#define pthread_self win32_pthread_self
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static inline void NORETURN pthread_exit(void *ret)
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{
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_endthreadex((unsigned)(uintptr_t)ret);
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}
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typedef DWORD pthread_key_t;
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static inline int pthread_key_create(pthread_key_t *keyp, void (*destructor)(void *value) UNUSED)
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{
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return (*keyp = TlsAlloc()) == TLS_OUT_OF_INDEXES ? EAGAIN : 0;
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}
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static inline int pthread_key_delete(pthread_key_t key)
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{
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return TlsFree(key) ? 0 : EINVAL;
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}
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static inline int pthread_setspecific(pthread_key_t key, const void *value)
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{
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return TlsSetValue(key, (void *)value) ? 0 : EINVAL;
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}
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static inline void *pthread_getspecific(pthread_key_t key)
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{
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return TlsGetValue(key);
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}
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#ifndef __MINGW64_VERSION_MAJOR
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static inline int pthread_sigmask(int how, const sigset_t *set, sigset_t *oset)
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{
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return 0;
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}
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#endif
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#endif /* PTHREAD_H */
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