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| author | Rich Felker <dalias@aerifal.cx> | 2013-04-26 19:48:01 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2013-04-26 19:48:01 -0400 |
| commit | 2c074b0d6cb2b28c5d1c0ccb2809965f4676efeb (patch) | |
| tree | 9c56db36bf3ae26450e8374bb38f181b787ae707 /src/thread | |
| parent | d53c92c972dab717f8f8e521eb0e9c4404cef4bd (diff) | |
| download | musl-2c074b0d6cb2b28c5d1c0ccb2809965f4676efeb.tar.gz musl-2c074b0d6cb2b28c5d1c0ccb2809965f4676efeb.tar.bz2 musl-2c074b0d6cb2b28c5d1c0ccb2809965f4676efeb.tar.xz musl-2c074b0d6cb2b28c5d1c0ccb2809965f4676efeb.zip | |
transition to using functions for internal signal blocking/restoring
there are several reasons for this change. one is getting rid of the
repetition of the syscall signature all over the place. another is
sharing the constant masks without costly GOT accesses in PIC.
the main motivation, however, is accurately representing whether we
want to block signals that might be handled by the application, or all
signals.
Diffstat (limited to 'src/thread')
| -rw-r--r-- | src/thread/pthread_create.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c index 6e49acdc..6c841be7 100644 --- a/src/thread/pthread_create.c +++ b/src/thread/pthread_create.c @@ -35,7 +35,7 @@ _Noreturn void pthread_exit(void *result) * This is important to ensure that dynamically allocated TLS * is not under-allocated/over-committed, and possibly for other * reasons as well. */ - __syscall(SYS_rt_sigprocmask, SIG_BLOCK, SIGALL_SET, &set, _NSIG/8); + __block_all_sigs(&set); /* Wait to unlock the kill lock, which governs functions like * pthread_kill which target a thread id, until signals have @@ -51,7 +51,7 @@ _Noreturn void pthread_exit(void *result) * stdio cleanup code a consistent state. */ if (a_fetch_add(&libc.threads_minus_1, -1)==0) { libc.threads_minus_1 = 0; - __syscall(SYS_rt_sigprocmask, SIG_SETMASK, &set, 0, _NSIG/8); + __restore_sigs(&set); exit(0); } @@ -94,8 +94,7 @@ static int start(void *p) self->detached = 2; pthread_exit(0); } - __syscall(SYS_rt_sigprocmask, SIG_SETMASK, - self->sigmask, 0, _NSIG/8); + __restore_sigs(self->sigmask); } if (self->unblock_cancel) __syscall(SYS_rt_sigprocmask, SIG_UNBLOCK, @@ -202,8 +201,7 @@ int pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict attrp } if (attr._a_sched) { do_sched = new->startlock[0] = 1; - __syscall(SYS_rt_sigprocmask, SIG_BLOCK, - SIGALL_SET, new->sigmask, _NSIG/8); + __block_app_sigs(new->sigmask); } new->unblock_cancel = self->cancel; new->canary = self->canary; @@ -214,8 +212,7 @@ int pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict attrp __release_ptc(); if (do_sched) { - __syscall(SYS_rt_sigprocmask, SIG_SETMASK, - new->sigmask, 0, _NSIG/8); + __restore_sigs(new->sigmask); } if (ret < 0) { |