diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ipc.c | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -26,6 +26,8 @@ * 2009-07-18 Bernard fix the event clear bug * 2009-09-09 Bernard remove fast event and fix ipc release bug * 2009-10-10 Bernard change semaphore and mutex value to unsigned value + * 2009-10-25 Bernard change the mb/mq receive timeout to 0 if the + * re-calculated delta tick is a negative number. */ #include <rtthread.h> @@ -1398,6 +1400,7 @@ rt_err_t rt_mb_recv (rt_mailbox_t mb, rt_uint32_t* value, rt_int32_t timeout) { tick_delta = rt_tick_get() - tick_delta; timeout -= tick_delta; + if (timeout < 0) timeout = 0; } } @@ -1843,6 +1846,7 @@ rt_err_t rt_mq_recv (rt_mq_t mq, void* buffer, rt_size_t size, rt_int32_t timeou { tick_delta = rt_tick_get() - tick_delta; timeout -= tick_delta; + if (timeout < 0) timeout = 0; } } |