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Merge pull request #3972 from mysterywolf/pr1 

[bug fixed] add mutex values' overflow-check code
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Bernard Xiong 2020-10-21 17:51:58 +08:00 committed by GitHub
parent 84b206533a b93b494239
commit b0b1e0c1a4
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1 changed files with 11 additions and 3 deletions
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14
src/ipc.c
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@ -37,7 +37,7 @@
* 2020-07-29 Meco Man fix thread->event_set/event_info when received an * 2020-07-29 Meco Man fix thread->event_set/event_info when received an
* event without pending * event without pending
* 2020-10-11 Meco Man add semaphore values' overflow-check code * 2020-10-11 Meco Man add semaphore values' overflow-check code
* in the function of rt_sem_release * 2020-10-21 Meco Man add mutex values' overflow-check code
*/ */
#include <rtthread.h> #include <rtthread.h>
@ -697,8 +697,16 @@ rt_err_t rt_mutex_take(rt_mutex_t mutex, rt_int32_t time)
if (mutex->owner == thread) if (mutex->owner == thread)
{ {
/* it's the same thread */ if(mutex->hold < 255u)
mutex->hold ++; {
/* it's the same thread */
mutex->hold ++;
}
else
{
rt_hw_interrupt_enable(temp); /* enable interrupt */
return -RT_EFULL; /* value overflowed */
}
} }
else else
{ {