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apps/enclave/libsockthread/src/logger.hpp

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+/*
+ * Copyright (c) 2004, Matthew P. Cashdollar <mpc@innographx.com>
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the author nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LIBSOCKTHREAD_LOGGER_HPP
+#define LIBSOCKTHREAD_LOGGER_HPP
+
+namespace Libsockthread {
+	class Logger {
+		public:
+			typedef enum {DEBUG = 0, MINOR = 1, INFO = 2, WARN = 3, ERROR = 4}
+				priority_t;
+
+			Logger(void)
+				: logf(0), loglevel(Logger::DEBUG) { }
+			~Logger(void) { close(); }
+
+			void close(void);
+			void log(priority_t priority, const char* format, ...);
+			priority_t get_loglevel(void) const
+				{ mutex.lock(); priority_t ll = loglevel; mutex.unlock(); return ll; }
+			void open(const string& file);  // throws Logger_error
+			void set_loglevel(priority_t priority)
+				{ mutex.lock(); loglevel = priority; mutex.unlock(); }
+		private:
+			Mutex cerr_m;
+			FILE* logf;
+			priority_t loglevel;
+			Mutex logger_m;
+	};
+
+	class Logger_error : public runtime_error {
+		public:
+			Logger_error(const string& s)
+				: runtime_error(s) { }
+	};
+}
+
+#endif  // LIBSOCKTHREAD_LOGGER_HPP