1 files changed, 159 insertions, 0 deletions
diff --git a/pki/base/tps/src/include/httpClient/httpc/ThreadPool.h b/pki/base/tps/src/include/httpClient/httpc/ThreadPool.h
new file mode 100644
index 000000000..389d42606
--- /dev/null
+++ b/pki/base/tps/src/include/httpClient/httpc/ThreadPool.h
@@ -0,0 +1,159 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ */
+/** BEGIN COPYRIGHT BLOCK
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301  USA 
+ * 
+ * Copyright (C) 2007 Red Hat, Inc.
+ * All rights reserved.
+ * END COPYRIGHT BLOCK **/
+
+#ifndef __THREAD_POOL_H
+#define __THREAD_POOL_H
+
+#ifdef HAVE_CONFIG_H
+#ifndef AUTOTOOLS_CONFIG_H
+#define AUTOTOOLS_CONFIG_H
+
+/* Eliminate warnings when using Autotools */
+#undef PACKAGE_BUGREPORT
+#undef PACKAGE_NAME
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+#undef PACKAGE_VERSION
+
+#include <config.h>
+#endif /* AUTOTOOLS_CONFIG_H */
+#endif /* HAVE_CONFIG_H */
+
+/**
+ * ThreadPool.h	1.000 06/12/2002
+ * 
+ * A worker thread pool.
+ *
+ * @author  Surendra Rajam
+ * @version 1.000, 06/12/2002
+ */
+
+class EXPORT_DECL ThreadPool {
+	friend class WorkerThread;
+public:
+	/**
+	 * Constructor - creates the pool with default values
+	 *
+	 * @param	name	name of the threadpool
+	 */
+	ThreadPool(const char* name);
+
+	/**
+	 * Constructor
+	 *
+	 * @param	name	name of the threadpool
+	 * @param	min		minimum threads in the pool
+	 * @param	max		maximum threads that can be created
+	 * @param	timeout	timeout for each thread
+	 */
+	ThreadPool(const char* name, int min, int max, int timeout);
+	
+	/**
+	 * Destructor
+	 */
+	virtual ~ThreadPool();
+
+public:
+
+	/**
+	 * Initializes the thread pool with minimum threads
+	 */
+	void Init();
+
+	/**
+	 * Shutdown the thread pool
+	 */
+	void Shutdown();
+
+	/**
+	 * Adds a task for future execution
+	 *
+	 * @param	task	a task to execute
+	 */
+	void AddTask(ScheduledTask* task);	
+
+	/**
+	 * Executes the task immediately 
+	 *
+	 * @param	task	a task to execute
+	 */
+	void ExecuteTask(ScheduledTask* task);	
+
+	/**
+	 * Gets the number of active threads in the pool
+	 *
+	 * @return	number of active threads
+	 */
+	int GetThreads();
+
+	/**
+	 * Gets the number of pending tasks in the list
+	 *
+	 * @return	number of pending tasks
+	 */
+	int GetPendingTasks();
+
+	/**
+	 * Function to start a NSPR thread
+	 */
+	static void StartWorkerThread(void* arg);
+
+private:
+	/**
+	 * Initializes constructor params
+	 */
+	void ConstructorInit(const char* name, int min, int max, int timeout);
+
+	/**
+	 * Creates a new thread
+	 */
+	void CreateNewThread();
+
+	/**
+	 * Notify one of the threads waiting on a condition
+	 */
+	void Notify();
+
+private:
+	char* m_name;
+	TaskList* m_taskList;
+
+	int m_minThreads;
+	int m_maxThreads;
+	int m_timeout;
+
+	int m_threads;
+	int m_activeThreads;
+
+	PRBool m_threadWait;
+	PRLock* m_threadLock;
+	PRCondVar* m_threadCondVar;
+
+	PRBool m_newThreadInitialized;
+	PRLock* m_newThreadLock;
+	PRCondVar* m_newThreadCondVar;
+
+	bool m_keepRunning;
+};
+
+#endif // __THREAD_POOL_H
+