Merged out from trunkQPID-2519

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/QPID-2519@1187375 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 112 insertions, 0 deletions

diff --git a/cpp/src/qmf/PosixEventNotifierImpl.cpp b/cpp/src/qmf/PosixEventNotifierImpl.cpp
new file mode 100644
index 0000000000..011dbcc214
--- /dev/null
+++ b/cpp/src/qmf/PosixEventNotifierImpl.cpp
@@ -0,0 +1,112 @@
+/*
+ * 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 "PosixEventNotifierImpl.h"
+#include "qpid/log/Statement.h"
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#define BUFFER_SIZE 10
+
+using namespace qmf;
+
+PosixEventNotifierImpl::PosixEventNotifierImpl(AgentSession& agentSession)
+    : EventNotifierImpl(agentSession)
+{
+    openHandle();
+}
+
+
+PosixEventNotifierImpl::PosixEventNotifierImpl(ConsoleSession& consoleSession)
+    : EventNotifierImpl(consoleSession)
+{
+    openHandle();
+}
+
+
+PosixEventNotifierImpl::~PosixEventNotifierImpl()
+{
+    closeHandle();
+}
+
+
+void PosixEventNotifierImpl::update(bool readable)
+{
+    char buffer[BUFFER_SIZE];
+
+    if(readable && !this->isReadable()) {
+        if (::write(myHandle, "1", 1) == -1)
+            QPID_LOG(error, "PosixEventNotifierImpl::update write failed: " << errno);
+    }
+    else if(!readable && this->isReadable()) {
+        if (::read(yourHandle, buffer, BUFFER_SIZE) == -1)
+            QPID_LOG(error, "PosixEventNotifierImpl::update read failed: " << errno);
+    }
+}
+
+
+void PosixEventNotifierImpl::openHandle()
+{
+    int pair[2];
+
+    if(::pipe(pair) == -1)
+        throw QmfException("Unable to open event notifier handle.");
+
+    yourHandle = pair[0];
+    myHandle = pair[1];
+
+    int flags;
+
+    flags = ::fcntl(yourHandle, F_GETFL);
+    if((::fcntl(yourHandle, F_SETFL, flags | O_NONBLOCK)) == -1)
+        throw QmfException("Unable to make remote handle non-blocking.");
+
+    flags = ::fcntl(myHandle, F_GETFL);
+    if((::fcntl(myHandle, F_SETFL, flags | O_NONBLOCK)) == -1)
+        throw QmfException("Unable to make local handle non-blocking.");
+}
+
+
+void PosixEventNotifierImpl::closeHandle()
+{
+    if(myHandle > 0) {
+        ::close(myHandle);
+        myHandle = -1;
+    }
+
+    if(yourHandle > 0) {
+        ::close(yourHandle);
+        yourHandle = -1;
+    }
+}
+
+
+PosixEventNotifierImpl& PosixEventNotifierImplAccess::get(posix::EventNotifier& notifier)
+{
+    return *notifier.impl;
+}
+
+
+const PosixEventNotifierImpl& PosixEventNotifierImplAccess::get(const posix::EventNotifier& notifier)
+{
+    return *notifier.impl;
+}
+