/** * Logging facility for debug/info messages. * _EGL_FATAL messages are printed to stderr * The EGL_LOG_LEVEL var controls the output of other warning/info/debug msgs. */ #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "egllog.h" #define MAXSTRING 1000 #define FALLBACK_LOG_LEVEL _EGL_WARNING #define FALLBACK_LOG_LEVEL_STR "warning" static EGLint ReportingLevel = -1; static void log_level_initialize(void) { #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; } else if (strcasecmp(log_env, "info") == 0) { ReportingLevel = _EGL_INFO; } else if (strcasecmp(log_env, "debug") == 0) { ReportingLevel = _EGL_DEBUG; } else { fprintf(stderr, "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; } } /** * Log a message to stderr. * \param level one of _EGL_FATAL, _EGL_WARNING, _EGL_INFO, _EGL_DEBUG. */ void _eglLog(EGLint level, const char *fmtStr, ...) { va_list args; char msg[MAXSTRING]; const char *levelStr; static int log_level_initialized = 0; if (!log_level_initialized) { log_level_initialize(); log_level_initialized = 1; } 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 = ""; } va_start(args, fmtStr); vsnprintf(msg, MAXSTRING, fmtStr, args); va_end(args); fprintf(stderr, "libEGL %s: %s\n", levelStr, msg); if (level == _EGL_FATAL) { exit(1); /* or abort()? */ } } }