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avoid redundant GET_THREAD() calls

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This reduces binary size slightly on my 32-bit system:

   text    data     bss     dec     hex filename
2847705   12360   30632 2890697  2c1bc9 ruby.orig
2847641   12360   30632 2890633  2c1b89 ruby

* iseq.c (rb_iseq_compile_with_option): reuse result of previous
  GET_THREAD() call
* thread.c (thread_create_core): ditto
  (rb_mutex_trylock): ditto
  (rb_mutex_lock): ditto
* process.c (rb_waitpid): avoid multiple eval from RUBY_VM_CHECK_INTS
* thread.c (rb_thread_check_ints): ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51273 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2015-07-16 20:42:43 +00:00
parent 5d59a808ce
commit 4fd2443580
4 changed files with 20 additions and 7 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
Fri Jul 17 05:33:58 2015 Eric Wong <e@80x24.org>
* iseq.c (rb_iseq_compile_with_option): reuse result of previous
GET_THREAD() call
* thread.c (thread_create_core): ditto
(rb_mutex_trylock): ditto
(rb_mutex_lock): ditto
* process.c (rb_waitpid): avoid multiple eval from RUBY_VM_CHECK_INTS
* thread.c (rb_thread_check_ints): ditto
Thu Jul 16 19:12:30 2015 Eric Wong <e@80x24.org>
* thread.c (mutex_alloc): remove needless volatile

2
iseq.c
View file

@ -568,7 +568,7 @@ rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE absolute_path, VALUE li
node = rb_parser_compile_string_path(parser, file, src, ln);
if (!node) {
rb_exc_raise(GET_THREAD()->errinfo); /* TODO: check err */
rb_exc_raise(th->errinfo); /* TODO: check err */
}
}

3
process.c
View file

@ -887,7 +887,8 @@ rb_waitpid(rb_pid_t pid, int *st, int flags)
RUBY_UBF_PROCESS, 0);
if (result < 0) {
if (errno == EINTR) {
RUBY_VM_CHECK_INTS(GET_THREAD());
rb_thread_t *th = GET_THREAD();
RUBY_VM_CHECK_INTS(th);
goto retry;
}
return (rb_pid_t)-1;

12
thread.c
View file

@ -670,7 +670,7 @@ thread_create_core(VALUE thval, VALUE args, VALUE (*fn)(ANYARGS))
rb_thread_t *th, *current_th = GET_THREAD();
int err;
if (OBJ_FROZEN(GET_THREAD()->thgroup)) {
if (OBJ_FROZEN(current_th->thgroup)) {
rb_raise(rb_eThreadError,
"can't start a new thread (frozen ThreadGroup)");
}
@ -1173,7 +1173,8 @@ rb_thread_wait_for(struct timeval time)
void
rb_thread_check_ints(void)
{
RUBY_VM_CHECK_INTS_BLOCKING(GET_THREAD());
rb_thread_t *th = GET_THREAD();
RUBY_VM_CHECK_INTS_BLOCKING(th);
}
/*
@ -4258,10 +4259,11 @@ rb_mutex_trylock(VALUE self)
native_mutex_lock(&mutex->lock);
if (mutex->th == 0) {
mutex->th = GET_THREAD();
rb_thread_t *th = GET_THREAD();
mutex->th = th;
locked = Qtrue;
mutex_locked(GET_THREAD(), self);
mutex_locked(th, self);
}
native_mutex_unlock(&mutex->lock);
@ -4345,7 +4347,7 @@ rb_mutex_lock(VALUE self)
}
if (rb_mutex_trylock(self) == Qfalse) {
if (mutex->th == GET_THREAD()) {
if (mutex->th == th) {
rb_raise(rb_eThreadError, "deadlock; recursive locking");
}