1 files changed, 84 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/sys/apr/Condition.h b/qpid/cpp/src/qpid/sys/apr/Condition.h
new file mode 100644
index 0000000000..5e544219ab
--- /dev/null
+++ b/qpid/cpp/src/qpid/sys/apr/Condition.h
@@ -0,0 +1,84 @@
+#ifndef _sys_apr_Condition_h
+#define _sys_apr_Condition_h
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#include "APRPool.h"
+#include "qpid/sys/Mutex.h"
+#include "qpid/sys/Time.h"
+
+#include <sys/errno.h>
+#include <boost/noncopyable.hpp>
+#include <apr_thread_cond.h>
+
+namespace qpid {
+namespace sys {
+
+/**
+ * A condition variable for thread synchronization.
+ */
+class Condition
+{
+  public:
+    inline Condition();
+    inline ~Condition();
+    inline void wait(Mutex&);
+    inline bool wait(Mutex&, const AbsTime& absoluteTime);
+    inline void notify();
+    inline void notifyAll();
+
+  private:
+    apr_thread_cond_t* condition;
+};
+
+
+Condition::Condition() {
+    CHECK_APR_SUCCESS(apr_thread_cond_create(&condition, APRPool::get()));
+}
+
+Condition::~Condition() {
+    CHECK_APR_SUCCESS(apr_thread_cond_destroy(condition));
+}
+
+void Condition::wait(Mutex& mutex) {
+    CHECK_APR_SUCCESS(apr_thread_cond_wait(condition, mutex.mutex));
+}
+
+bool Condition::wait(Mutex& mutex, const AbsTime& absoluteTime){
+    // APR uses microseconds.
+    apr_status_t status =
+        apr_thread_cond_timedwait(
+            condition, mutex.mutex, Duration(now(), absoluteTime)/TIME_USEC);
+    if(status != APR_TIMEUP) CHECK_APR_SUCCESS(status);
+    return status == 0;
+}
+
+void Condition::notify(){
+    CHECK_APR_SUCCESS(apr_thread_cond_signal(condition));
+}
+
+void Condition::notifyAll(){
+    CHECK_APR_SUCCESS(apr_thread_cond_broadcast(condition));
+}
+
+}}
+#endif  /*!_sys_apr_Condition_h*/