rt: Remove lock_and_signal::signal_all

Author: brson

src/rt/rust_scheduler.cpp

@@ -358,7 +358,7 @@ rust_scheduler::exit() {
     A(this, !lock.lock_held_by_current_thread(), "Shouldn't have lock");
     scoped_lock with(lock);
     should_exit = true;
-    lock.signal_all();
+    lock.signal();
 }
 
 //

src/rt/sync/lock_and_signal.cpp

@@ -18,11 +18,6 @@
 lock_and_signal::lock_and_signal()
     : _holding_thread(INVALID_THREAD)
 {
-    // FIXME: In order to match the behavior of pthread_cond_broadcast on
-    // Windows, we create manual reset events. This however breaks the
-    // behavior of pthread_cond_signal, fixing this is quite involved:
-    // refer to: http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
-
     _event = CreateEvent(NULL, TRUE, FALSE, NULL);
     InitializeCriticalSection(&_cs);
 }
@@ -92,17 +87,6 @@ void lock_and_signal::signal() {
 #endif
 }
 
-/**
- * Signal condition, and resume all waiting threads.
- */
-void lock_and_signal::signal_all() {
-#if defined(__WIN32__)
-    SetEvent(_event);
-#else
-    CHECKED(pthread_cond_broadcast(&_cond));
-#endif
-}
-
 bool lock_and_signal::lock_held_by_current_thread()
 {
 #if defined(__WIN32__)

src/rt/sync/lock_and_signal.h

@@ -22,7 +22,6 @@ class lock_and_signal {
     void unlock();
     void wait();
     void signal();
-    void signal_all();
 
     bool lock_held_by_current_thread();
 };