varnishevent: monitoring stats for writer threads include bytes written

bin/varnishevent/writer.c

@@ -76,10 +76,11 @@ static char *obuf = NULL;
 static pthread_mutex_t reopen_lock = PTHREAD_MUTEX_INITIALIZER;
 
 /* stats */
-static unsigned deqs = 0;
-static unsigned waits = 0;
-static unsigned writes = 0;
-static unsigned errors = 0;
+static unsigned long deqs = 0;
+static unsigned long bytes = 0;
+static unsigned long waits = 0;
+static unsigned long writes = 0;
+static unsigned long errors = 0;
 
 typedef struct writer_data_s {
     unsigned magic;
@@ -166,6 +167,7 @@ wrt_write(logline_t *ll)
     }
 
     writes++;
+    bytes += VSB_len(os);
     MON_StatsUpdate(STATS_WRITTEN);
 
     /* clean up */
@@ -276,8 +278,10 @@ WRT_Stats(void)
     if (!run) return;
     
     LOG_Log(LOG_INFO,
-        "Writer (%s): seen=%u writes=%u errors=%u waits=%u free=%u",
-        statename[wrt_data.state], deqs, writes, errors, waits, wrt_nfree);
+        "Writer (%s): seen=%lu writes=%lu bytes=%lu errors=%lu waits=%lu"
+        " free=%u",
+        statename[wrt_data.state], deqs, writes, bytes, errors, waits,
+        wrt_nfree);
 }
 
 int