Last change
on this file since 403 was 337, checked in by coas-nagasima, 6 years ago |
ASP3版ECNLを追加
|
-
Property svn:eol-style
set to
native
-
Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
|
File size:
404 bytes
|
Line | |
---|
1 | #include "pthread_impl.h"
|
---|
2 |
|
---|
3 | int pthread_rwlock_unlock(pthread_rwlock_t *rw)
|
---|
4 | {
|
---|
5 | int val, cnt, waiters, new, priv = rw->_rw_shared^128;
|
---|
6 |
|
---|
7 | do {
|
---|
8 | val = rw->_rw_lock;
|
---|
9 | cnt = val & 0x7fffffff;
|
---|
10 | waiters = rw->_rw_waiters;
|
---|
11 | new = (cnt == 0x7fffffff || cnt == 1) ? 0 : val-1;
|
---|
12 | } while (a_cas(&rw->_rw_lock, val, new) != val);
|
---|
13 |
|
---|
14 | if (!new && (waiters || val<0))
|
---|
15 | __wake(&rw->_rw_lock, cnt, priv);
|
---|
16 |
|
---|
17 | return 0;
|
---|
18 | }
|
---|
Note:
See
TracBrowser
for help on using the repository browser.