#include <string.h>
#include <babeltrace2/logging.h>
#include "common/macros.h"
+#include "common/assert.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
*
* See BT_LOG_OUTPUT_LEVEL for details.
*/
+#define BT_LOG_ON_CUR_LVL(lvl, cur_lvl) \
+ (BT_LOG_ENABLED((lvl)) && (lvl) >= (cur_lvl))
#define BT_LOG_ON(lvl) \
(BT_LOG_ENABLED((lvl)) && (lvl) >= _BT_LOG_OUTPUT_LEVEL)
#define BT_LOG_ON_VERBOSE BT_LOG_ON(BT_LOG_VERBOSE)
* - BT_LOG_WRITE_MEM_AUX(&log_instance, level, tag, data_ptr, data_sz,
* "format string", args, ...)
*
+ * Explicit log level, current log level, and tag:
+ * - BT_LOG_WRITE_CUR_LVL(level, cur_level, tag, "format string", args, ...)
+ *
* Format string follows printf() conventions. Both data_ptr and data_sz could
* be 0. Tag can be 0 as well. Most compilers will verify that type of arguments
* match format specifiers in format string.
if (BT_LOG_ON(lvl)) \
_bt_log_write(lvl, tag, __VA_ARGS__); \
} _BT_LOG_ONCE
+ #define BT_LOG_WRITE_CUR_LVL(lvl, cur_lvl, tag, ...) \
+ do { \
+ if (BT_LOG_ON_CUR_LVL((lvl), (cur_lvl))) \
+ _bt_log_write(lvl, tag, __VA_ARGS__); \
+ } _BT_LOG_ONCE
#define BT_LOG_WRITE_MEM(lvl, tag, d, d_sz, ...) \
do { \
if (BT_LOG_ON(lvl)) \
_bt_log_write_d(_BT_LOG_SRCLOC_FUNCTION, __FILE__, __LINE__, \
lvl, tag, __VA_ARGS__); \
} _BT_LOG_ONCE
+ #define BT_LOG_WRITE_CUR_LVL(lvl, cur_lvl, tag, ...) \
+ do { \
+ if (BT_LOG_ON_CUR_LVL((lvl), (cur_lvl))) \
+ _bt_log_write_d(_BT_LOG_SRCLOC_FUNCTION, __FILE__, __LINE__, \
+ lvl, tag, __VA_ARGS__); \
+ } _BT_LOG_ONCE
#define BT_LOG_WRITE_MEM(lvl, tag, d, d_sz, ...) \
do { \
if (BT_LOG_ON(lvl)) \
} _BT_LOG_ONCE
#endif
-#define BT_LOG_WRITE_ERRNO(lvl, tag, _msg, _fmt, args...) \
+#define BT_LOG_WRITE_ERRNO_CUR_LVL(lvl, cur_lvl, tag, _msg, _fmt, args...) \
do { \
const char *error_str; \
error_str = g_strerror(errno); \
- BT_LOG_WRITE(lvl, tag, _msg ": %s" _fmt, error_str, ## args); \
+ BT_LOG_WRITE_CUR_LVL(lvl, cur_lvl, tag, _msg ": %s" _fmt, error_str, ## args); \
+ } _BT_LOG_ONCE
+
+#define BT_LOG_WRITE_ERRNO(lvl, tag, _msg, _fmt, args...) \
+ do { \
+ BT_LOG_WRITE_ERRNO_CUR_LVL(lvl, _BT_LOG_OUTPUT_LEVEL, tag, _msg, _fmt, ## args); \
} _BT_LOG_ONCE
static _BT_LOG_INLINE void _bt_log_unused(const int dummy, ...) {(void)dummy;}
*/
#define BT_LOG_STDERR (&_bt_log_stderr_spec)
+/*
+ * Returns the equivalent letter of the log level `level`.
+ *
+ * `level` must be a valid log level.
+ */
static inline
-int bt_log_get_level_from_env(const char *var)
+char bt_log_get_letter_from_level(int level)
{
- const char *varval = getenv(var);
- int level = BT_LOG_NONE;
-
- if (!varval) {
- goto end;
+ char letter;
+
+ switch (level) {
+ case BT_LOG_VERBOSE:
+ letter = 'V';
+ break;
+ case BT_LOG_DEBUG:
+ letter = 'D';
+ break;
+ case BT_LOG_INFO:
+ letter = 'I';
+ break;
+ case BT_LOG_WARN:
+ letter = 'W';
+ break;
+ case BT_LOG_ERROR:
+ letter = 'E';
+ break;
+ case BT_LOG_FATAL:
+ letter = 'F';
+ break;
+ case BT_LOG_NONE:
+ letter = 'N';
+ break;
+ default:
+ abort();
}
- if (strcmp(varval, "VERBOSE") == 0 ||
- strcmp(varval, "V") == 0) {
+ return letter;
+}
+
+/*
+ * Returns the log level for the string `str`, or -1 if `str` is not a
+ * valid log level string.
+ */
+static inline
+int bt_log_get_level_from_string(const char *str)
+{
+ int level = -1;
+
+ BT_ASSERT(str);
+
+ if (strcmp(str, "VERBOSE") == 0 ||
+ strcmp(str, "V") == 0) {
level = BT_LOG_VERBOSE;
- } else if (strcmp(varval, "DEBUG") == 0 ||
- strcmp(varval, "D") == 0) {
+ } else if (strcmp(str, "DEBUG") == 0 ||
+ strcmp(str, "D") == 0) {
level = BT_LOG_DEBUG;
- } else if (strcmp(varval, "INFO") == 0 ||
- strcmp(varval, "I") == 0) {
+ } else if (strcmp(str, "INFO") == 0 ||
+ strcmp(str, "I") == 0) {
level = BT_LOG_INFO;
- } else if (strcmp(varval, "WARN") == 0 ||
- strcmp(varval, "WARNING") == 0 ||
- strcmp(varval, "W") == 0) {
+ } else if (strcmp(str, "WARN") == 0 ||
+ strcmp(str, "WARNING") == 0 ||
+ strcmp(str, "W") == 0) {
level = BT_LOG_WARN;
- } else if (strcmp(varval, "ERROR") == 0 ||
- strcmp(varval, "E") == 0) {
+ } else if (strcmp(str, "ERROR") == 0 ||
+ strcmp(str, "E") == 0) {
level = BT_LOG_ERROR;
- } else if (strcmp(varval, "FATAL") == 0 ||
- strcmp(varval, "F") == 0) {
+ } else if (strcmp(str, "FATAL") == 0 ||
+ strcmp(str, "F") == 0) {
level = BT_LOG_FATAL;
- } else if (strcmp(varval, "NONE") == 0 ||
- strcmp(varval, "N") == 0) {
+ } else if (strcmp(str, "NONE") == 0 ||
+ strcmp(str, "N") == 0) {
level = BT_LOG_NONE;
} else {
- /* Should we warn here? How? */
+ /* FIXME: Should we warn here? How? */
+ }
+
+ return level;
+}
+
+/*
+ * Returns the log level for the letter `letter`, or -1 if `letter` is
+ * not a valid log level string.
+ */
+static inline
+int bt_log_get_level_from_letter(char letter)
+{
+ char str[] = {letter, '\0'};
+
+ return bt_log_get_level_from_string(str);
+}
+
+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;
+ }
+
+ level = bt_log_get_level_from_string(varval);
+ if (level < 0) {
+ /* FIXME: Should we warn here? How? */
+ level = BT_LOG_NONE;
}
end:
_level_sym = bt_log_get_level_from_env(_env_var); \
}
+#define BT_LOG_SUPPORTED
+
#ifdef __cplusplus
}
#endif
projects / babeltrace.git / blobdiff