log: Output time stamps at log level spew

[libsigrok.git] / src / log.c

diff --git a/src/log.c b/src/log.c
index 4750a5bef6a2c13a078e5a1783d956dd63113de6..36aa5c0070c10659b6ef6f0a6d7a46f275996197 100644 (file)
--- a/src/log.c
+++ b/src/log.c
@@ -63,6 +63,8 @@ static void *sr_log_cb_data = NULL;
 /** @endcond */
 static char sr_log_domain[LOGDOMAIN_MAXLEN + 1] = LOGDOMAIN_DEFAULT;
 
+static int64_t sr_log_start_time = 0;
+
 /**
  * Set the libsigrok loglevel.
  *
@@ -86,6 +88,9 @@ SR_API int sr_log_loglevel_set(int loglevel)
                sr_err("Invalid loglevel %d.", loglevel);
                return SR_ERR_ARG;
        }
+       /* Output time stamps relative to time at startup */
+       if (loglevel >= SR_LOG_SPEW && sr_log_start_time == 0)
+               sr_log_start_time = g_get_monotonic_time();
 
        cur_loglevel = loglevel;
 
@@ -130,9 +135,9 @@ SR_API int sr_log_logdomain_set(const char *logdomain)
        }
 
        /* TODO: Error handling. */
-       snprintf((char *)&sr_log_domain, LOGDOMAIN_MAXLEN, "%s", logdomain);
+       snprintf(sr_log_domain, LOGDOMAIN_MAXLEN, "%s", logdomain);
 
-       sr_dbg("Log domain set to '%s'.", (const char *)&sr_log_domain);
+       sr_dbg("Log domain set to '%s'.", sr_log_domain);
 
        return SR_OK;
 }
@@ -148,7 +153,7 @@ SR_API int sr_log_logdomain_set(const char *logdomain)
  */
 SR_API char *sr_log_logdomain_get(void)
 {
-       return g_strdup((const char *)&sr_log_domain);
+       return g_strdup(sr_log_domain);
 }
 
 /**
@@ -204,21 +209,35 @@ SR_API int sr_log_callback_set_default(void)
 
 static int sr_logv(void *cb_data, int loglevel, const char *format, va_list args)
 {
-       int ret;
+       int64_t elapsed;
+       int64_t min;
+       int sec;
+       int usec;
 
        /* This specific log callback doesn't need the void pointer data. */
        (void)cb_data;
 
        /* Only output messages of at least the selected loglevel(s). */
        if (loglevel > cur_loglevel)
-               return SR_OK; /* TODO? */
+               return SR_OK;
 
-       if (sr_log_domain[0] != '\0')
-               fprintf(stderr, "%s", sr_log_domain);
-       ret = vfprintf(stderr, format, args);
-       fprintf(stderr, "\n");
+       if (cur_loglevel >= SR_LOG_SPEW) {
+               elapsed = g_get_monotonic_time() - sr_log_start_time;
+               min = elapsed / G_TIME_SPAN_MINUTE;
+               sec = (elapsed % G_TIME_SPAN_MINUTE) / G_TIME_SPAN_SECOND;
+               usec = elapsed % G_TIME_SPAN_SECOND;
 
-       return ret;
+               if (fprintf(stderr, "[%.2" PRIi64 ":%.2d.%.6d] ", min, sec, usec) < 0)
+                       return SR_ERR;
+       }
+       if (sr_log_domain[0] != '\0' && fputs(sr_log_domain, stderr) < 0)
+               return SR_ERR;
+       if (vfprintf(stderr, format, args) < 0)
+               return SR_ERR;
+       if (putc('\n', stderr) < 0)
+               return SR_ERR;
+
+       return SR_OK;
 }
 
 /** @private */