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authorko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2011-06-27 00:30:41 +0000
committerko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2011-06-27 00:30:41 +0000
commitd1d5d5e79845c292c6118884fa66729954daad01 (patch)
tree6342d8b459610882aeb8a57aec34476b225ca904 /signal.c
parent8ce62003a0046374bc696cbf4b3c46e9283a85b1 (diff)
* thread_pthread.c: Stop polling in the timer thread when there are
no waiting thread. If there are 2 or more runnable threads, the timer thread does polling. Avoid polling makes power save for several computers (0.2W per a Ruby process, when I measured). If outside-event such as signal or Thread#kill was occuerred when the timer thread does not do polling, then wake-up the timer thread using communication-pipe (the timer thread waits this communication-pipe with select(2)). The discussion about this modification can be found from the post [ruby-core:33456] and other related posts. Note that Eric Wong and KOSAKI Motohiro give us the huge contributions for this modification. Thanks. * thread_pthread.c (rb_thread_wakeup_timer_thread): add a function. This function wakes up the timer thread using communication-pipe. * thread.c (rb_thread_stop_timer_thread): add a parameter which specify closing communication-pipe or not. * thread.c (rb_thread_terminate_all): do not stop timer thread here (ruby_cleanup() terminate timer thread). * signal.c: wake up timer thread using rb_thread_wakeup_timer_thread() from signal handler. * eval.c (ruby_cleanup): use rb_thread_stop_timer_thread(1). * process.c: use rb_thread_stop_timer_thread(0) (reuse communication-pipe). * thread_win32.c (rb_thread_wakeup_timer_thread): add a dummy function. * vm_core.h: add and fix decl. of functions. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32244 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'signal.c')
-rw-r--r--signal.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/signal.c b/signal.c
index 2e9f4f5aff..774cdad303 100644
--- a/signal.c
+++ b/signal.c
@@ -507,6 +507,7 @@ sighandler(int sig)
{
ATOMIC_INC(signal_buff.cnt[sig]);
ATOMIC_INC(signal_buff.size);
+ rb_thread_wakeup_timer_thread();
#if !defined(BSD_SIGNAL) && !defined(POSIX_SIGNAL)
ruby_signal(sig, sighandler);
#endif