RepoMirrors/musl
1
0
Fork 0
mirror of git://git.musl-libc.org/musl synced 2025-03-06 19:57:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

more efficient signal blocking for timer threads

Browse Source 
due to the barrier, it's safe just to block signals in the new thread,
rather than blocking and unblocking in the parent thread.
This commit is contained in:
Rich Felker 2011-08-12 01:11:28 -04:00
parent 8b625e45ff
commit b1a7102d83
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/time/timer_create.c
View File

@ -58,6 +58,7 @@ static void *start(void *arg)
{
pthread_t self = __pthread_self();
struct start_args *args = arg;
sigset_t set;
/* Reuse no-longer-needed thread structure fields to avoid
* needing the timer address in the signal handler. */
@ -65,6 +66,9 @@ static void *start(void *arg)
self->start_arg = args->sev->sigev_value.sival_ptr;
self->result = (void *)-1;
sigfillset(&set);
pthread_sigmask(SIG_BLOCK, &set, 0);
pthread_barrier_wait(&args->b);
__wait(&self->delete_timer, 0, 0, 1);
__syscall(SYS_timer_delete, self->result);
@ -80,7 +84,6 @@ int timer_create(clockid_t clk, struct sigevent *evp, timer_t *res)
struct start_args args;
struct ksigevent ksev, *ksevp=0;
int timerid;
sigset_t set;
switch (evp ? evp->sigev_notify : SIGEV_SIGNAL) {
case SIGEV_NONE:
@ -105,10 +108,7 @@ int timer_create(clockid_t clk, struct sigevent *evp, timer_t *res)
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_barrier_init(&args.b, 0, 2);
args.sev = evp;
sigfillset(&set);
pthread_sigmask(SIG_BLOCK, &set, &set);
r = pthread_create(&td, &attr, start, &args);
pthread_sigmask(SIG_SETMASK, &set, 0);
if (r) {
errno = r;
return -1;