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+#ifndef QPID_SYS_POSIX_FORK_H
+#define QPID_SYS_POSIX_FORK_H
+
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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 <string>
+#include <sys/types.h>
+
+namespace qpid {
+namespace sys {
+
+/**
+ * Fork the process. Call parent() in parent and child() in child.
+ */
+class Fork {
+ public:
+ Fork();
+ virtual ~Fork();
+
+ /**
+ * Fork the process.
+ * Calls parent() in the parent process, child() in the child.
+ */
+ virtual void fork();
+
+ protected:
+
+ /** Called in parent process.
+ *@child pid of child process
+ */
+ virtual void parent(pid_t child) = 0;
+
+ /** Called in child process */
+ virtual void child() = 0;
+};
+
+/**
+ * Like Fork but also allows the child to send a string message
+ * or throw an exception to the parent.
+ */
+class ForkWithMessage : public Fork {
+ public:
+ ForkWithMessage();
+ void fork();
+
+ protected:
+ /** Call from parent(): wait for child to send a value or throw exception.
+ * @timeout in seconds to wait for response.
+ * @return value passed by child to ready().
+ */
+ std::string wait(int timeout);
+
+ /** Call from child(): Send a value to the parent.
+ *@param value returned by parent call to wait().
+ */
+ void ready(const std::string& value);
+
+ private:
+ int pipeFds[2];
+};
+
+}} // namespace qpid::sys
+
+
+
+#endif /*!QPID_SYS_POSIX_FORK_H*/