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base-linux: let core catch SIGCHLD signals

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This commit is contained in:
Norman Feske
2013-01-03 13:20:24 +01:00
parent 62e0dd579e
commit 38272b9172
5 changed files with 51 additions and 15 deletions
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11
base-linux/src/core/thread_linux.cc
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@ -27,15 +27,18 @@ static void empty_signal_handler(int) { }
void Thread_base::_thread_start()
{
/*
* Set signal handler such that canceled system calls get not
* transparently retried after a signal gets received.
* Set signal handler such that canceled system calls get not transparently
* retried after a signal gets received.
*/
lx_sigaction(LX_SIGUSR1, empty_signal_handler);
/*
* Prevent children from becoming zombies. (SIG_IGN = 1)
* Deliver SIGCHLD signals to no thread other than the main thread. Core's
* main thread will handle the signals while executing the 'wait_for_exit'
* function, which is known to not hold any locks that would interfere with
* the handling of the signal.
*/
lx_sigaction(LX_SIGCHLD, (void (*)(int))1);
lx_sigsetmask(LX_SIGCHLD, false);
Thread_base::myself()->entry();
Thread_base::myself()->_join_lock.unlock();