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zlog_rotater_trylock fail #252

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philGemini opened this issue Mar 18, 2024 · 0 comments
Open

zlog_rotater_trylock fail #252

philGemini opened this issue Mar 18, 2024 · 0 comments

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@philGemini
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我的项目用了 zlog , 所有的工作很好
但是会出现
01-02 18:07:28 WARN (3363245:rotater.c:467) pthread_mutex_trylock fail, as lock_mutex is locked by other threads
01-02 18:07:28 WARN (3363245:rotater.c:510) zlog_rotater_trylock fail, maybe lock by other process or threads

很多,然后log文件和这个 zlog.error.log 文件会不断+大

工作环境是
1个守护进程拉起 多个子进程(8-10)
守护进程和所有子进程 同时指向一个config , 并默认的用这个config作为rotate的文件锁
所有的进程 指向同一个log文件路径

常用进程 每个约3个线程,
系统 Ubuntu 20, 大约是什么原因呢
而且这个一旦发生, 似乎就再也无法停下了, 哪怕我重启所有进程似乎也似乎无法rotate
BTW
static int zlog_rotater_trylock(zlog_rotater_t *a_rotater)
{
int rc;

rc = pthread_mutex_trylock(&(a_rotater->lock_mutex));
if (rc == EBUSY) {
	zc_warn("pthread_mutex_trylock fail, as lock_mutex is locked by other threads");
	return -1;
} else if (rc != 0) {
	zc_error("pthread_mutex_trylock fail, rc[%d]", rc);
	return -1;
}

a_rotater->lock_fd = lock_file(a_rotater->lock_file);
if (a_rotater->lock_fd == INVALID_LOCK_FD) {
	return -1;
}

return 0;

}
zlog_rotate 的时候尝试 trylock rotate 文件锁
但是失败后会直接返回
if (zlog_rotater_trylock(a_rotater)) {
zc_warn("zlog_rotater_trylock fail, maybe lock by other process or threads");
return 0;
}

如果情况是我线程锁+成功 但是 文件锁失败的情况
是不是会导致 线程就直接锁死无法释放?
还是我的理解有错误?

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