+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright 2010 LunarG, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
/**
* Logging facility for debug/info messages.
* _EGL_FATAL messages are printed to stderr
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+
#include "egllog.h"
+#include "eglstring.h"
+#include "eglmutex.h"
#define MAXSTRING 1000
-#define FALLBACK_LOG_LEVEL _EGL_WARNING
-#define FALLBACK_LOG_LEVEL_STR "warning"
+#define FALLBACK_LOG_LEVEL _EGL_WARNING
-static EGLint ReportingLevel = -1;
+static struct {
+ _EGLMutex mutex;
-static void
-log_level_initialize(void)
+ EGLBoolean initialized;
+ EGLint level;
+ _EGLLogProc logger;
+ EGLint num_messages;
+} logging = {
+ _EGL_MUTEX_INITIALIZER,
+ EGL_FALSE,
+ FALLBACK_LOG_LEVEL,
+ NULL,
+ 0
+};
+
+static const char *level_strings[] = {
+ /* the order is important */
+ "fatal",
+ "warning",
+ "info",
+ "debug",
+ NULL
+};
+
+
+/**
+ * Set the function to be called when there is a message to log.
+ * Note that the function will be called with an internal lock held.
+ * Recursive logging is not allowed.
+ */
+void
+_eglSetLogProc(_EGLLogProc logger)
{
-#if defined(_EGL_PLATFORM_X)
- char *log_env = getenv("EGL_LOG_LEVEL");
-#else
- char *log_env = NULL;
-#endif
-
- if (log_env == NULL) {
- ReportingLevel = FALLBACK_LOG_LEVEL;
- }
- else if (strcasecmp(log_env, "fatal") == 0) {
- ReportingLevel = _EGL_FATAL;
- }
- else if (strcasecmp(log_env, "warning") == 0) {
- ReportingLevel = _EGL_WARNING;
+ EGLint num_messages = 0;
+
+ _eglLockMutex(&logging.mutex);
+
+ if (logging.logger != logger) {
+ logging.logger = logger;
+
+ num_messages = logging.num_messages;
+ logging.num_messages = 0;
}
- else if (strcasecmp(log_env, "info") == 0) {
- ReportingLevel = _EGL_INFO;
+
+ _eglUnlockMutex(&logging.mutex);
+
+ if (num_messages)
+ _eglLog(_EGL_DEBUG,
+ "New logger installed. "
+ "Messages before the new logger might not be available.");
+}
+
+
+/**
+ * Set the log reporting level.
+ */
+void
+_eglSetLogLevel(EGLint level)
+{
+ switch (level) {
+ case _EGL_FATAL:
+ case _EGL_WARNING:
+ case _EGL_INFO:
+ case _EGL_DEBUG:
+ _eglLockMutex(&logging.mutex);
+ logging.level = level;
+ _eglUnlockMutex(&logging.mutex);
+ break;
+ default:
+ break;
}
- else if (strcasecmp(log_env, "debug") == 0) {
- ReportingLevel = _EGL_DEBUG;
+}
+
+
+/**
+ * The default logger. It prints the message to stderr.
+ */
+static void
+_eglDefaultLogger(EGLint level, const char *msg)
+{
+ fprintf(stderr, "libEGL %s: %s\n", level_strings[level], msg);
+}
+
+
+/**
+ * Initialize the logging facility.
+ */
+static void
+_eglInitLogger(void)
+{
+ const char *log_env;
+ EGLint i, level = -1;
+
+ if (logging.initialized)
+ return;
+
+ log_env = getenv("EGL_LOG_LEVEL");
+ if (log_env) {
+ for (i = 0; level_strings[i]; i++) {
+ if (_eglstrcasecmp(log_env, level_strings[i]) == 0) {
+ level = i;
+ break;
+ }
+ }
}
else {
- fprintf(stderr, "Unrecognized EGL_LOG_LEVEL environment variable value. "
+ level = FALLBACK_LOG_LEVEL;
+ }
+
+ logging.logger = _eglDefaultLogger;
+ logging.level = (level >= 0) ? level : FALLBACK_LOG_LEVEL;
+ logging.initialized = EGL_TRUE;
+
+ /* it is fine to call _eglLog now */
+ if (log_env && level < 0) {
+ _eglLog(_EGL_WARNING,
+ "Unrecognized EGL_LOG_LEVEL environment variable value. "
"Expected one of \"fatal\", \"warning\", \"info\", \"debug\". "
- "Got \"%s\". Falling back to \"%s\".\n",
- log_env, FALLBACK_LOG_LEVEL_STR);
- ReportingLevel = FALLBACK_LOG_LEVEL;
+ "Got \"%s\". Falling back to \"%s\".",
+ log_env, level_strings[FALLBACK_LOG_LEVEL]);
}
}
/**
- * Log a message to stderr.
+ * Log a message with message logger.
* \param level one of _EGL_FATAL, _EGL_WARNING, _EGL_INFO, _EGL_DEBUG.
*/
void
{
va_list args;
char msg[MAXSTRING];
- const char *levelStr;
- static int log_level_initialized = 0;
+ int ret;
- if (!log_level_initialized) {
- log_level_initialize();
- log_level_initialized = 1;
- }
+ /* one-time initialization; a little race here is fine */
+ if (!logging.initialized)
+ _eglInitLogger();
+ if (level > logging.level || level < 0)
+ return;
- if (level <= ReportingLevel) {
- switch (level) {
- case _EGL_FATAL:
- levelStr = "Fatal";
- break;
- case _EGL_WARNING:
- levelStr = "Warning";
- break;
- case _EGL_INFO:
- levelStr = "Info";
- break;
- case _EGL_DEBUG:
- levelStr = "Debug";
- break;
- default:
- levelStr = "";
- }
+ _eglLockMutex(&logging.mutex);
+ if (logging.logger) {
va_start(args, fmtStr);
- vsnprintf(msg, MAXSTRING, fmtStr, args);
+ ret = vsnprintf(msg, MAXSTRING, fmtStr, args);
+ if (ret < 0 || ret >= MAXSTRING)
+ strcpy(msg, "<message truncated>");
va_end(args);
- fprintf(stderr, "libEGL %s: %s\n", levelStr, msg);
-
- if (level == _EGL_FATAL) {
- exit(1); /* or abort()? */
- }
+ logging.logger(level, msg);
+ logging.num_messages++;
}
+
+ _eglUnlockMutex(&logging.mutex);
+
+ if (level == _EGL_FATAL)
+ exit(1); /* or abort()? */
}
projects / mesa.git / blobdiff