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authorAmar Tumballi <amar@gluster.com>2010-09-10 20:24:07 +0000
committerVijay Bellur <vijay@dev.gluster.com>2010-09-13 06:44:50 -0700
commit6d52dfb6646286f2dfd554dc008e96f9b13aade9 (patch)
tree0e167503e0987d728f3de931305ca18152808be4 /libglusterfs/src/logging.c
parentd0ee998f5c997cfdebd0b7ff4bcbc9b2ea74c1ff (diff)
logging: provide a API to print calling functions
* logs 3 calling functions Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1493 (log enhancement to print calling function..) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1493
Diffstat (limited to 'libglusterfs/src/logging.c')
-rw-r--r--libglusterfs/src/logging.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/libglusterfs/src/logging.c b/libglusterfs/src/logging.c
index 4493b05c7..4287fe874 100644
--- a/libglusterfs/src/logging.c
+++ b/libglusterfs/src/logging.c
@@ -39,6 +39,10 @@
#include <syslog.h>
#endif
+#ifdef HAVE_BACKTRACE
+#include <execinfo.h>
+#endif
+
static pthread_mutex_t logfile_mutex;
static char *filename = NULL;
@@ -188,6 +192,142 @@ gf_log_cleanup (void)
pthread_mutex_destroy (&logfile_mutex);
}
+int
+_gf_log_callingfn (const char *domain, const char *file, const char *function,
+ int line, gf_loglevel_t level, const char *fmt, ...)
+{
+ const char *basename = NULL;
+ struct tm *tm = NULL;
+ xlator_t *this = NULL;
+ char *str1 = NULL;
+ char *str2 = NULL;
+ char *msg = NULL;
+ char timestr[256] = {0,};
+ char callstr[1024] = {0,};
+ struct timeval tv = {0,};
+ size_t len = 0;
+ int ret = 0;
+ gf_loglevel_t xlator_loglevel = 0;
+ va_list ap;
+
+ if (!logfile)
+ return -1;
+
+ this = THIS;
+
+ xlator_loglevel = this->loglevel;
+ if (xlator_loglevel == 0)
+ xlator_loglevel = loglevel;
+
+ if (level > xlator_loglevel)
+ goto out;
+
+ static char *level_strings[] = {"", /* NONE */
+ "M", /* EMERGENCY */
+ "A", /* ALERT */
+ "C", /* CRITICAL */
+ "E", /* ERROR */
+ "W", /* WARNING */
+ "N", /* NOTICE */
+ "I", /* INFO/NORMAL */
+ "D", /* DEBUG */
+ "T", /* TRACE */
+ ""};
+
+ if (!domain || !file || !function || !fmt) {
+ fprintf (stderr,
+ "logging: %s:%s():%d: invalid argument\n",
+ __FILE__, __PRETTY_FUNCTION__, __LINE__);
+ return -1;
+ }
+
+#if HAVE_BACKTRACE
+ /* Print 'calling function' */
+ do {
+ void *array[5];
+ char **callingfn = NULL;
+ size_t size = 0;
+
+ size = backtrace (array, 5);
+ if (size)
+ callingfn = backtrace_symbols (&array[2], size-2);
+ if (!callingfn)
+ break;
+
+ snprintf (callstr, 1024, "(-->%s (-->%s (-->%s)))", callingfn[2],
+ callingfn[1], callingfn[0]);
+ free (callingfn);
+ } while (0);
+#endif /* HAVE_BACKTRACE */
+
+ ret = gettimeofday (&tv, NULL);
+ if (-1 == ret)
+ goto out;
+
+ tm = localtime (&tv.tv_sec);
+
+ pthread_mutex_lock (&logfile_mutex);
+ {
+ va_start (ap, fmt);
+
+ strftime (timestr, 256, "%Y-%m-%d %H:%M:%S", tm);
+ snprintf (timestr + strlen (timestr), 256 - strlen (timestr),
+ ".%"GF_PRI_SUSECONDS, tv.tv_usec);
+
+ basename = strrchr (file, '/');
+ if (basename)
+ basename++;
+ else
+ basename = file;
+
+ ret = gf_asprintf (&str1, "[%s] %s [%s:%d:%s] %s %s: ",
+ timestr, level_strings[level],
+ basename, line, function, callstr,
+ domain);
+ if (-1 == ret) {
+ goto unlock;
+ }
+
+ ret = vasprintf (&str2, fmt, ap);
+ if (-1 == ret) {
+ goto unlock;
+ }
+
+ va_end (ap);
+
+ len = strlen (str1);
+ msg = GF_MALLOC (len + strlen (str2) + 1, gf_common_mt_char);
+
+ strcpy (msg, str1);
+ strcpy (msg + len, str2);
+
+ fprintf (logfile, "%s\n", msg);
+ fflush (logfile);
+
+#ifdef GF_LINUX_HOST_OS
+ /* We want only serious log in 'syslog', not our debug
+ and trace logs */
+ if (gf_log_syslog && level && (level <= GF_LOG_ERROR))
+ syslog ((level-1), "%s\n", msg);
+#endif
+ }
+
+unlock:
+ pthread_mutex_unlock (&logfile_mutex);
+
+ if (msg) {
+ GF_FREE (msg);
+ }
+
+ if (str1)
+ GF_FREE (str1);
+
+ if (str2)
+ FREE (str2);
+
+out:
+ return ret;
+}
int
_gf_log (const char *domain, const char *file, const char *function, int line,