diff options
author | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-12-30 22:25:16 +0000 |
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committer | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-12-30 22:25:16 +0000 |
commit | 82ab1e189b7761c6e871176a2dcff3a867940270 (patch) | |
tree | ca7cb2e0ab06aeb369a3b2270bd3442a1fecdf77 /thread.c | |
parent | 035e4949c5f3c1dda9a9bf31db3f29201d70a25f (diff) | |
download | ruby-82ab1e189b7761c6e871176a2dcff3a867940270.tar.gz |
* thread.c (rb_barrier_waiting): save the number of waiting threads
in RBASIC()->flags. [ruby-dev:45002] [Bug #5768]
* thread.c (rb_barrier_wait): increment and decrement around
rb_mutex_lock, and use rb_barrier_waiting().
* thread.c (rb_barrier_release): use rb_barrier_waiting().
* thread.c (rb_barrier_destroy): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34163 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'thread.c')
-rw-r--r-- | thread.c | 40 |
1 files changed, 20 insertions, 20 deletions
@@ -3685,6 +3685,21 @@ barrier_alloc(VALUE klass) } #define GetBarrierPtr(obj) ((VALUE)rb_check_typeddata((obj), &barrier_data_type)) +#define BARRIER_WAITING_MASK (FL_USER0|FL_USER1|FL_USER2|FL_USER3|FL_USER4|FL_USER5|FL_USER6|FL_USER7|FL_USER8|FL_USER9|FL_USER10|FL_USER11|FL_USER12|FL_USER13|FL_USER14|FL_USER15|FL_USER16|FL_USER17|FL_USER18|FL_USER19) +#define BARRIER_WAITING_SHIFT (FL_USHIFT) +#define rb_barrier_waiting(b) ((RBASIC(b)->flags&BARRIER_WAITING_MASK)>>BARRIER_WAITING_SHIFT) +#define rb_barrier_waiting_inc(b) do { \ + int w = rb_barrier_waiting(b); \ + w++; \ + RBASIC(b)->flags &= ~BARRIER_WAITING_MASK; \ + RBASIC(b)->flags |= (w << BARRIER_WAITING_SHIFT); \ +} while (0) +#define rb_barrier_waiting_dec(b) do { \ + int w = rb_barrier_waiting(b); \ + w--; \ + RBASIC(b)->flags &= ~BARRIER_WAITING_MASK; \ + RBASIC(b)->flags |= (w << BARRIER_WAITING_SHIFT); \ +} while (0) VALUE rb_barrier_new(void) @@ -3707,16 +3722,16 @@ rb_barrier_wait(VALUE self) { VALUE mutex = GetBarrierPtr(self); rb_mutex_t *m; - int waiting; if (!mutex) return Qfalse; GetMutexPtr(mutex, m); if (m->th == GET_THREAD()) return Qnil; + rb_barrier_waiting_inc(self); rb_mutex_lock(mutex); + rb_barrier_waiting_dec(self); if (DATA_PTR(self)) return Qtrue; - waiting = m->cond_waiting; rb_mutex_unlock(mutex); - return waiting ? Qnil : Qfalse; + return rb_barrier_waiting(self) > 0 ? Qnil : Qfalse; } /* @@ -3726,10 +3741,8 @@ VALUE rb_barrier_release(VALUE self) { VALUE mutex = GetBarrierPtr(self); - rb_mutex_t *m; rb_mutex_unlock(mutex); - GetMutexPtr(mutex, m); - return m->cond_waiting > 0 ? Qtrue : Qfalse; + return rb_barrier_waiting(self) > 0 ? Qtrue : Qfalse; } /* @@ -3739,22 +3752,9 @@ VALUE rb_barrier_destroy(VALUE self) { VALUE mutex = GetBarrierPtr(self); - rb_mutex_t *m; DATA_PTR(self) = 0; rb_mutex_unlock(mutex); - GetMutexPtr(mutex, m); - return m->cond_waiting > 0 ? Qtrue : Qfalse; -} - -int -rb_barrier_waiting(VALUE self) -{ - VALUE mutex = GetBarrierPtr(self); - rb_mutex_t *m; - - if (!mutex) return 0; - GetMutexPtr(mutex, m); - return m->cond_waiting; + return rb_barrier_waiting(self) > 0 ? Qtrue : Qfalse; } /* variables for recursive traversals */ |