sched/sched/sched_waitpid.c: Discard the correct child entry
Summary:
- Discard the correct child entry after receiving SIGCHLD.
Impact:
- waitpid, wait
Testing:
hifive1-revb:nsh (CONFIG_SCHED_HAVE_PARENT=y, CONFIG_SCHED_CHILD_STATUS=y, CONFIG_SIG_DEFAULT=y)
on QEMU
static int task_main(int argc, char *argv[])
{
sleep(1);
return 0;
}
int main(int argc, FAR char *argv[])
{
pid_t pid1;
pid_t pid2;
int status;
task_create("task1", 224, 1024, task_main, NULL);
task_create("task2", 224, 1024, task_main, NULL);
pid1 = waitpid(-1, &status, 0);
pid2 = waitpid(-1, &status, 0);
assert(pid1 != pid2);
return 0;
}
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