X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Ferror.c;h=5abb7453aaf4bbb0a46a59d94fb9b38baad9b801;hb=49ceaa707d6fd92526e6afb4beeca7bb77409fe2;hp=eec9b7a3e3e6645d803cf03dff8590571199a438;hpb=a96bc65dd4f5ba299189ccd1aa725f1526429824;p=lttng-tools.git

diff --git a/src/common/error.c b/src/common/error.c
index eec9b7a3e..5abb7453a 100644
--- a/src/common/error.c
+++ b/src/common/error.c
@@ -17,6 +17,7 @@
 
 #define _GNU_SOURCE
 #include <assert.h>
+#include <inttypes.h>
 
 #include <lttng/lttng-error.h>
 #include <common/common.h>
@@ -25,6 +26,43 @@
 
 #define ERROR_INDEX(code) (code - LTTNG_OK)
 
+/* TLS variable that contains the time of one single log entry. */
+DEFINE_URCU_TLS(struct log_time, error_log_time);
+
+LTTNG_HIDDEN
+const char *log_add_time(void)
+{
+	int ret;
+	struct tm tm, *res;
+	struct timespec tp;
+	time_t now;
+
+	ret = clock_gettime(CLOCK_REALTIME, &tp);
+	if (ret < 0) {
+		goto error;
+	}
+	now = (time_t) tp.tv_sec;
+
+	res = localtime_r(&now, &tm);
+	if (!res) {
+		goto error;
+	}
+
+	/* Format time in the TLS variable. */
+	ret = snprintf(URCU_TLS(error_log_time).str, sizeof(error_log_time.str),
+			"%02d:%02d:%02d.%06ld",
+			tm.tm_hour, tm.tm_min, tm.tm_sec, tp.tv_nsec);
+	if (ret < 0) {
+		goto error;
+	}
+
+	return URCU_TLS(error_log_time).str;
+
+error:
+	/* Return an empty string on error so logging is not affected. */
+	return "";
+}
+
 /*
  * Human readable error message.
  */