[11f26f]: misc.c Maximize Restore History

Download this file

misc.c    66 lines (53 with data), 1.3 kB

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
/*
* misc.c
*
* Description:
* This translation unit implements miscellaneous thread functions.
*/
#include "pthread.h"
int
pthread_once(pthread_once_t *once_control,
void (*init_routine)(void))
{
/* A flag, allocated per invocation, that indicates if the amotic
test-and-set occured. */
unsigned short flag = 0;
if (once_control == NULL || init_routine == NULL)
{
return EINVAL;
}
/* FIXME: we are assuming that the `cs' object is initialised at DLL
load time. Likewise, the object should be destroyed when (if)
the DLL is unloaded. */
/* An atomic test-and-set of the "once" flag. */
EnterCriticalSection(&once_control->lock);
if (once_control->flag == 0)
{
flag = once_control->flag = 1;
}
LeaveCriticalSection(&once_control->lock);
if (flag)
{
/* Run the init routine. */
init_routine();
}
return 0;
}
pthread_t
pthread_self(void)
{
pthread_t ret;
/* This TLS index is allocated on DLL load by dll.c */
extern DWORD _pthread_threadID_TlsIndex;
ret = (pthread_t) TlsGetValue(_pthread_threadID_TlsIndex);
if (ret == 0)
{
/* FIXME: Oh no! This can't happen. */
}
return ret;
}
int
pthread_equal(pthread_t t1, pthread_t t2)
{
return (t1 != t2);
}