producer_consumer.cc: Use linear algorithm for producer.

2004-03-24  Felix Yen  <fwy@alumni.brown.edu>

	* testsuite/performance/20_util/allocator/producer_consumer.cc:
	Use linear algorithm for producer.

From-SVN: r79920

libstdc++-v3/ChangeLog

+2004-03-24  Felix Yen  <fwy@alumni.brown.edu>
+
+	* testsuite/performance/20_util/allocator/producer_consumer.cc:
+	Use linear algorithm for producer.
+	
 2004-03-24  Paolo Carlini  <pcarlini@suse.de>
 
 	* include/ext/mt_allocator.h (__mt_alloc<>::allocate,

libstdc++-v3/testsuite/performance/20_util/allocator/producer_consumer.cc

@@ -129,8 +129,9 @@ template<typename Container>
   Queue<Container>::push_back(const typename Container::value_type& value)
   {
     AutoLock auto_lock(lock);
+    const bool signal = queue.empty();
     queue.insert(queue.end(), value);
-    if (queue.size() == 1) pthread_cond_signal(&condition);
+    if (signal) pthread_cond_signal(&condition);
   }
 
 template<typename Container>