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* thread.c (rb_mutex_owned_p): remove static.

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* io.c (io_flush_buffer): don't hold mutex if already have.
  Now recursive lock may occur when following scenario.
  fptr_finalize -> finish_writeconv_sync -> finish_writeconv
  -> io_fflush.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38400 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
kosaki 2012-12-15 05:40:18 +00:00
parent 9bd33790b7
commit e78d4e69fe
4 changed files with 14 additions and 2 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Sat Dec 15 13:57:08 2012 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* thread.c (rb_mutex_owned_p): remove static.
* io.c (io_flush_buffer): don't hold mutex if already have.
Now recursive lock may occur when following scenario.
fptr_finalize -> finish_writeconv_sync -> finish_writeconv
-> io_fflush.
Sat Dec 15 13:38:30 2012 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* io.c (io_flush_buffer): uses io_flush_buffer_async2 instead of

1
internal.h
View file

@ -283,6 +283,7 @@ VALUE rb_thread_shield_release(VALUE self);
VALUE rb_thread_shield_destroy(VALUE self);
void rb_mutex_allow_trap(VALUE self, int val);
VALUE rb_uninterruptible(VALUE (*b_proc)(ANYARGS), VALUE data);
VALUE rb_mutex_owned_p(VALUE self);
/* thread_pthread.c, thread_win32.c */
void Init_native_thread(void);

5
io.c
View file

@ -1006,7 +1006,10 @@ static inline int
io_flush_buffer(rb_io_t *fptr)
{
if (fptr->write_lock) {
return (int)rb_mutex_synchronize(fptr->write_lock, io_flush_buffer_async2, (VALUE)fptr);
if (rb_mutex_owned_p(fptr->write_lock))
return (int)io_flush_buffer_async2((VALUE)fptr);
else
return (int)rb_mutex_synchronize(fptr->write_lock, io_flush_buffer_async2, (VALUE)fptr);
}
else {
return (int)io_flush_buffer_async((VALUE)fptr);

2
thread.c
View file

@ -4264,7 +4264,7 @@ rb_mutex_lock(VALUE self)
* Returns +true+ if this lock is currently held by current thread.
* <em>This API is experimental, and subject to change.</em>
*/
static VALUE
VALUE
rb_mutex_owned_p(VALUE self)
{
VALUE owned = Qfalse;