kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

thread_pthread.c: microptimize vm->gvl.waiting checks

Browse source 
"gvl.waiting" is volatile, so the compiler won't perform
these optimizations for us.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63683 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2018-06-17 03:27:45 +00:00
parent cc6342fec3
commit 0e2ba8495e
1 changed files with 2 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
thread_pthread.c
View file

@ -73,8 +73,7 @@ gvl_acquire_common(rb_vm_t *vm)
{
if (vm->gvl.acquired) {
vm->gvl.waiting++;
if (vm->gvl.waiting == 1) {
if (!vm->gvl.waiting++) {
/*
* Wake up timer thread iff timer thread is slept.
* When timer thread is polling mode, we don't want to
@ -87,7 +86,7 @@ gvl_acquire_common(rb_vm_t *vm)
rb_native_cond_wait(&vm->gvl.cond, &vm->gvl.lock);
}
vm->gvl.waiting--;
--vm->gvl.waiting;
if (vm->gvl.need_yield) {
vm->gvl.need_yield = 0;