OrgApache/incubator-nuttx
OrgApache
/
incubator-nuttx
mirror of https://github.com/apache/incubator-nuttx.git
1
0
Fork 0
Code Issues Releases Wiki Activity

semaphore: do not assert if the count exceeds the limit 

Linux Programmer's Manual:

SEM_POST(3)

NAME
       sem_post - unlock a semaphore
...

ERRORS
...
       EOVERFLOW
              The maximum allowable value for a semaphore would be exceeded.

Change-Id: I57c1a797a5510df4290a10aa2f3106fd01754b37
Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2020-04-21 14:05:21 +08:00 committed by patacongo
parent 0887203c57
commit 8b289023bf
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
sched/semaphore/sem_post.c
View File

@ -100,6 +100,14 @@ int nxsem_post(FAR sem_t *sem)
flags = enter_critical_section();
/* Check the maximum allowable value */
if (sem->semcount >= SEM_VALUE_MAX)
{
leave_critical_section(flags);
return -EOVERFLOW;
}
/* Perform the semaphore unlock operation, releasing this task as a
* holder then also incrementing the count on the semaphore.
*
@ -117,7 +125,6 @@ int nxsem_post(FAR sem_t *sem)
* initialized if the semaphore is to used for signaling purposes.
*/
DEBUGASSERT(sem->semcount < SEM_VALUE_MAX);
nxsem_releaseholder(sem);
sem->semcount++;