#ifndef BABELTRACE_LOGGING_INTERNAL_H
#define BABELTRACE_LOGGING_INTERNAL_H
+#include <stdlib.h>
+#include <stdio.h>
#include <babeltrace/logging.h>
+#include <babeltrace/babeltrace-internal.h>
/* To detect incompatible changes you can define BT_LOG_VERSION_REQUIRED to be
* the current value of BT_LOG_VERSION before including this file (or via
* compiler command line):
*
* #define BT_LOG_VERSION_REQUIRED 4
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
*
* Compilation will fail when included file has different version.
*/
* before including bt_log.h:
*
* #define BT_LOG_LEVEL BT_LOG_VERBOSE
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
*
* If both BT_LOG_DEF_LEVEL and BT_LOG_LEVEL are undefined, then BT_LOG_INFO
* will be used for release builds (NDEBUG is defined) and BT_LOG_DEBUG
* Example:
*
* #define BT_LOG_OUTPUT_LEVEL g_module_log_level
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
* static int g_module_log_level = BT_LOG_INFO;
* static void foo() {
* BT_LOGI("Will check g_module_log_level for output log level");
* must be the first field in this structure:
*
* #define BT_LOG_OUTPUT_LEVEL (g_config.log_level)
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
* struct config {
* int log_level;
* unsigned other_field;
#if defined(BT_LOG_OUTPUT_LEVEL)
#define _BT_LOG_OUTPUT_LEVEL BT_LOG_OUTPUT_LEVEL
#else
- #define _BT_LOG_OUTPUT_LEVEL _bt_log_global_output_lvl
+ /*
+ * We disallow this to make sure Babeltrace modules always
+ * have their own local log level.
+ */
+ #error No log level symbol specified: please define BT_LOG_OUTPUT_LEVEL before including this header.
#endif
/* "Tag" is a compound string that could be associated with a log message. It
* before including bt_log.h:
*
* #define BT_LOG_TAG "MAIN"
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
*
* If both BT_LOG_DEF_TAG and BT_LOG_TAG are undefined no tag will be added to
* the log message (tag prefix still could be added though).
* before including bt_log.h:
*
* #define BT_LOG_SRCLOC BT_LOG_SRCLOC_NONE
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
*
* If both BT_LOG_DEF_SRCLOC and BT_LOG_SRCLOC are undefined, then
* BT_LOG_SRCLOC_NONE will be used for release builds (NDEBUG is defined) and
* very careful not to push such temporary changes to source control):
*
* #define BT_LOG_CENSORING BT_LOG_UNCENSORED
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
*
* If both BT_LOG_DEF_CENSORING and BT_LOG_CENSORING are undefined, then
* BT_LOG_CENSORED will be used for release builds (NDEBUG is defined) and
*
* For example, in log_config.c:
*
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
* BT_LOG_DEFINE_TAG_PREFIX = "MyApp";
* BT_LOG_DEFINE_GLOBAL_FORMAT = {CUSTOM_MEM_WIDTH};
* BT_LOG_DEFINE_GLOBAL_OUTPUT = {BT_LOG_PUT_STD, custom_output_callback, 0};
*
* // KittyHttpLogging.h
* #define BT_LOG_LIBRARY_PREFIX KittyHttp_
- * #include <babeltrace/log-internal.h>
+ * #include <babeltrace/logging-internal.h>
*
* Regardless of the method chosen, the end result is that bt_log symbols will
* be prefixed with "KittyHttp_", so if a user of KittyHttp (say DogeBrowser)
#endif
#if defined(__printflike)
- #define _BT_LOG_PRINTFLIKE(a, b) __printflike(a, b)
+ #define _BT_LOG_PRINTFLIKE(str_index, first_to_check) \
+ __printflike(str_index, first_to_check)
+#elif defined(__MINGW_PRINTF_FORMAT)
+ #define _BT_LOG_PRINTFLIKE(str_index, first_to_check) \
+ __attribute__((format(__MINGW_PRINTF_FORMAT, str_index, first_to_check)))
+#elif defined(__GNUC__)
+ #define _BT_LOG_PRINTFLIKE(str_index, first_to_check) \
+ __attribute__((format(__printf__, str_index, first_to_check)))
#else
- #define _BT_LOG_PRINTFLIKE(a, b)
+ #define _BT_LOG_PRINTFLIKE(str_index, first_to_check)
#endif
#if (defined(_WIN32) || defined(_WIN64)) && !defined(__GNUC__)
*/
#define BT_LOG_STDERR (&_bt_log_stderr_spec)
+static inline
+int bt_log_get_level_from_env(const char *var)
+{
+ const char *varval = getenv(var);
+ int level = BT_LOG_NONE;
+
+ if (!varval) {
+ goto end;
+ }
+
+ if (strcmp(varval, "VERBOSE") == 0 ||
+ strcmp(varval, "V") == 0) {
+ level = BT_LOG_VERBOSE;
+ } else if (strcmp(varval, "DEBUG") == 0 ||
+ strcmp(varval, "D") == 0) {
+ level = BT_LOG_DEBUG;
+ } else if (strcmp(varval, "INFO") == 0 ||
+ strcmp(varval, "I") == 0) {
+ level = BT_LOG_INFO;
+ } else if (strcmp(varval, "WARN") == 0 ||
+ strcmp(varval, "WARNING") == 0 ||
+ strcmp(varval, "W") == 0) {
+ level = BT_LOG_WARN;
+ } else if (strcmp(varval, "ERROR") == 0 ||
+ strcmp(varval, "E") == 0) {
+ level = BT_LOG_ERROR;
+ } else if (strcmp(varval, "FATAL") == 0 ||
+ strcmp(varval, "F") == 0) {
+ level = BT_LOG_FATAL;
+ } else if (strcmp(varval, "NONE") == 0 ||
+ strcmp(varval, "N") == 0) {
+ level = BT_LOG_NONE;
+ } else {
+ /* Should we warn here? How? */
+ }
+
+end:
+ return level;
+}
+
+#define BT_LOG_LEVEL_EXTERN_SYMBOL(_level_sym) \
+ extern int _level_sym
+
+#define BT_LOG_INIT_LOG_LEVEL(_level_sym, _env_var) \
+ BT_HIDDEN int _level_sym = BT_LOG_NONE; \
+ static \
+ void __attribute__((constructor)) _bt_log_level_ctor(void) \
+ { \
+ _level_sym = bt_log_get_level_from_env(_env_var); \
+ }
+
#ifdef __cplusplus
}
#endif
-#endif
+#endif /* BABELTRACE_LOGGING_INTERNAL_H */