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Try to use flock first to lock file.

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This commit is contained in:
zhengshuxin 2024-04-24 11:56:23 +08:00
parent 0e96092516
commit 687250daf7
1 changed files with 13 additions and 2 deletions
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15
lib_acl_cpp/src/stdlib/locker.cpp
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@ -127,8 +127,12 @@ bool locker::lock(void)
return true;
}
#ifdef ACL_HAS_FLOCK_LOCK
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FLOCK, LOCK_EX) == 0) {
#else
int operation = ACL_FLOCK_OP_EXCLUSIVE;
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FCNTL, operation) == 0) {
#endif
return true;
}
@ -155,8 +159,12 @@ bool locker::try_lock(void)
return true;
}
#ifdef ACL_HAS_FLOCK_LOCK
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FLOCK, (LOCK_EX | LOCK_NB)) == 0) {
#else
int operation = ACL_FLOCK_OP_EXCLUSIVE | ACL_FLOCK_OP_NOWAIT;
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FCNTL, operation) == 0) {
#endif
return true;
}
@ -193,8 +201,11 @@ bool locker::unlock(void)
return ret;
}
int operation = ACL_FLOCK_STYLE_FCNTL;
if (acl_myflock(fHandle_, operation, ACL_FLOCK_OP_NONE) == -1) {
#ifdef ACL_HAS_FLOCK_LOCK
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FLOCK, ACL_FLOCK_OP_NONE) == -1) {
#else
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FCNTL, ACL_FLOCK_OP_NONE) == -1) {
#endif
return false;
}
return ret;