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fix(ulog): Avoid async ulog empty wakeups and missed notifications

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This commit is contained in:
wdfk-prog
2026-02-12 09:01:15 +08:00
committed by Rbb666
parent cbc759d6a5
commit e5e29350b8
1 changed files with 8 additions and 3 deletions
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11
components/utilities/ulog/ulog.c
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@@ -635,7 +635,7 @@ static void do_output(rt_uint32_t level, const char *tag, rt_bool_t is_raw, cons
{
static rt_bool_t warned_async_log_buf = RT_FALSE;
ulog_warn_once(&warned_async_log_buf,
"Warning: There is no enough buffer for saving async log,"
"Warning: There is not enough buffer for saving async log,"
" please increase the ULOG_ASYNC_OUTPUT_BUF_SIZE option.\n");
}
}
@@ -653,7 +653,7 @@ static void do_output(rt_uint32_t level, const char *tag, rt_bool_t is_raw, cons
{
static rt_bool_t warned_async_raw_partial = RT_FALSE;
ulog_warn_once(&warned_async_raw_partial,
"Warning: There is no enough buffer for saving async raw log,"
"Warning: There is not enough buffer for saving async raw log,"
" please increase the ULOG_ASYNC_OUTPUT_BUF_SIZE option.\n");
}
}
@@ -1479,7 +1479,6 @@ void ulog_async_output_enabled(rt_bool_t enabled)
*/
rt_err_t ulog_async_waiting_log(rt_int32_t time)
{
rt_sem_control(&ulog.async_notice, RT_IPC_CMD_RESET, RT_NULL);
return rt_sem_take(&ulog.async_notice, time);
}
@@ -1569,6 +1568,12 @@ int ulog_init(void)
return -RT_ENOMEM;
}
rt_sem_init(&ulog.async_notice, "ulog", 0, RT_IPC_FLAG_FIFO);
/*
* Use binary-semaphore semantics for async_notice.
* This relies on ulog_async_output() draining all pending logs in one wakeup,
* so coalescing multiple notices will not lose log data.
*/
rt_sem_control(&ulog.async_notice, RT_IPC_CMD_SET_VLIMIT, (void *)1);
#endif /* ULOG_USING_ASYNC_OUTPUT */
#ifdef ULOG_USING_FILTER