PostgreSQL Source Code: src/interfaces/libpq/pthread-win32.c Source File

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pthread-win32.c
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1/*-------------------------------------------------------------------------
2*
3* pthread-win32.c
4* partial pthread implementation for win32
5*
6* Copyright (c) 2004-2025, PostgreSQL Global Development Group
7* IDENTIFICATION
8* src/interfaces/libpq/pthread-win32.c
9*
10*-------------------------------------------------------------------------
11*/
12
13#include "postgres_fe.h"
14
15#include "pthread-win32.h"
16
17DWORD
18 pthread_self(void)
19{
20 return GetCurrentThreadId();
21}
22
23void
24 pthread_setspecific(pthread_key_t key, void *val)
25{
26}
27
28void *
29 pthread_getspecific(pthread_key_t key)
30{
31 return NULL;
32}
33
34int
35 pthread_mutex_init(pthread_mutex_t *mp, void *attr)
36{
37 mp->initstate = 0;
38 return 0;
39}
40
41int
42 pthread_mutex_lock(pthread_mutex_t *mp)
43{
44 /* Initialize the csection if not already done */
45 if (mp->initstate != 1)
46 {
47 LONG istate;
48
49 while ((istate = InterlockedExchange(&mp->initstate, 2)) == 2)
50 Sleep(0); /* wait, another thread is doing this */
51 if (istate != 1)
52 InitializeCriticalSection(&mp->csection);
53 InterlockedExchange(&mp->initstate, 1);
54 }
55 EnterCriticalSection(&mp->csection);
56 return 0;
57}
58
59int
60 pthread_mutex_unlock(pthread_mutex_t *mp)
61{
62 if (mp->initstate != 1)
63 return EINVAL;
64 LeaveCriticalSection(&mp->csection);
65 return 0;
66}
long val
Definition: informix.c:689
int pthread_mutex_unlock(pthread_mutex_t *mp)
Definition: pthread-win32.c:60
int pthread_mutex_lock(pthread_mutex_t *mp)
Definition: pthread-win32.c:42
void pthread_setspecific(pthread_key_t key, void *val)
Definition: pthread-win32.c:24
DWORD pthread_self(void)
Definition: pthread-win32.c:18
void * pthread_getspecific(pthread_key_t key)
Definition: pthread-win32.c:29
int pthread_mutex_init(pthread_mutex_t *mp, void *attr)
Definition: pthread-win32.c:35
ULONG pthread_key_t
Definition: pthread-win32.h:7
Definition: pthread-win32.h:10
CRITICAL_SECTION csection
Definition: pthread-win32.h:13
LONG initstate
Definition: pthread-win32.h:12

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