thodg/libgit2/src/win32/thread.h

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• Hash : 82f15896
  Author :
  Date : 2016-11-18T07:19:22
  

  threads: introduce `git_thread_exit` Introduce `git_thread_exit`, which will allow threads to terminate at an arbitrary time, returning a `void *`. On Windows, this means that we need to store the current `git_thread` in TLS, so that we can set its `return` value when terminating. We cannot simply use `ExitThread`, since Win32 returns `DWORD`s from threads; we return `void *`.

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• src/win32/thread.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  
  #ifndef INCLUDE_win32_thread_h__
  #define INCLUDE_win32_thread_h__
  
  #include "../common.h"
  
  #if defined (_MSC_VER)
  #	define GIT_RESTRICT __restrict
  #else
  #	define GIT_RESTRICT __restrict__
  #endif
  
  typedef struct {
  	HANDLE thread;
  	void *(*proc)(void *);
  	void *param;
  	void *result;
  } git_thread;
  
  typedef CRITICAL_SECTION git_mutex;
  typedef HANDLE git_cond;
  
  typedef struct { void *Ptr; } GIT_SRWLOCK;
  
  typedef struct {
  	union {
  		GIT_SRWLOCK srwl;
  		CRITICAL_SECTION csec;
  	} native;
  } git_rwlock;
  
  int git_threads_init(void);
  
  int git_thread_create(git_thread *GIT_RESTRICT,
  	void *(*) (void *),
  	void *GIT_RESTRICT);
  int git_thread_join(git_thread *, void **);
  size_t git_thread_currentid(void);
  void git_thread_exit(void *);
  
  int git_mutex_init(git_mutex *GIT_RESTRICT mutex);
  int git_mutex_free(git_mutex *);
  int git_mutex_lock(git_mutex *);
  int git_mutex_unlock(git_mutex *);
  
  int git_cond_init(git_cond *);
  int git_cond_free(git_cond *);
  int git_cond_wait(git_cond *, git_mutex *);
  int git_cond_signal(git_cond *);
  
  int git_rwlock_init(git_rwlock *GIT_RESTRICT lock);
  int git_rwlock_rdlock(git_rwlock *);
  int git_rwlock_rdunlock(git_rwlock *);
  int git_rwlock_wrlock(git_rwlock *);
  int git_rwlock_wrunlock(git_rwlock *);
  int git_rwlock_free(git_rwlock *);
  
  #endif /* INCLUDE_win32_thread_h__ */
  

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