From fe2656543d4d83139d239f6caabc09d1e68c2a72 Mon Sep 17 00:00:00 2001
From: Kevin Yang <kyang@twitter.com>
Date: Tue, 1 Mar 2016 14:42:31 -0800
Subject: [PATCH] update log_flush api to return # bytes flushed

---
 include/cc_log.h | 2 +-
 src/cc_log.c     | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/cc_log.h b/include/cc_log.h
index 8ef355d98..56eda540c 100644
--- a/include/cc_log.h
+++ b/include/cc_log.h
@@ -81,7 +81,7 @@ bool log_write(struct logger *logger, char *buf, uint32_t len);
 
 void _log_fd(int fd, const char *fmt, ...);
 
-void log_flush(struct logger *logger);
+size_t log_flush(struct logger *logger);
 
 #ifdef __cplusplus
 }
diff --git a/src/cc_log.c b/src/cc_log.c
index fad14162b..e34d58b16 100644
--- a/src/cc_log.c
+++ b/src/cc_log.c
@@ -275,7 +275,7 @@ _rbuf_flush(struct rbuf *buf, int fd)
     return ret;
 }
 
-void
+size_t
 log_flush(struct logger *logger)
 {
     ssize_t n;
@@ -299,4 +299,6 @@ log_flush(struct logger *logger)
     } else {
         INCR(log_metrics, log_flush);
     }
+
+    return n;
 }