greenplumn pthread-win32 源码
greenplumn pthread-win32 代码
文件路径：/src/interfaces/libpq/pthread-win32.c
/*-------------------------------------------------------------------------
*
* pthread-win32.c
* partial pthread implementation for win32
*
* Copyright (c) 2004-2019, PostgreSQL Global Development Group
* IDENTIFICATION
* src/interfaces/libpq/pthread-win32.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include "pthread-win32.h"
DWORD
pthread_self(void)
{
return GetCurrentThreadId();
}
void
pthread_setspecific(pthread_key_t key, void *val)
{
}
void *
pthread_getspecific(pthread_key_t key)
{
return NULL;
}
int
pthread_mutex_init(pthread_mutex_t *mp, void *attr)
{
*mp = (CRITICAL_SECTION *) malloc(sizeof(CRITICAL_SECTION));
if (!*mp)
return 1;
InitializeCriticalSection(*mp);
return 0;
}
int
pthread_mutex_lock(pthread_mutex_t *mp)
{
if (!*mp)
return 1;
EnterCriticalSection(*mp);
return 0;
}
int
pthread_mutex_unlock(pthread_mutex_t *mp)
{
if (!*mp)
return 1;
LeaveCriticalSection(*mp);
return 0;
}
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