From e01ded9e27f41af45e8614860b29164d13c0101e Mon Sep 17 00:00:00 2001
From: Takeshi Nakatani <ggtakec@gmail.com>
Date: Sun, 7 Feb 2016 07:40:55 +0000
Subject: [PATCH] Fixed codes about clock_gettime for osx

---
 configure.ac  |  3 +++
 src/cache.cpp | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/configure.ac b/configure.ac
index 70d8c65..449128a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -228,6 +228,9 @@ dnl ----------------------------------------------
 dnl malloc_trim function
 AC_CHECK_FUNCS([malloc_trim])
 
+dnl clock_gettime function(osx)
+AC_CHECK_FUNCS([clock_gettime])
+
 dnl ----------------------------------------------
 dnl check symbols/macros/enums
 dnl ----------------------------------------------
diff --git a/src/cache.cpp b/src/cache.cpp
index d8f7112..e5b9fc9 100644
--- a/src/cache.cpp
+++ b/src/cache.cpp
@@ -21,6 +21,9 @@
 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#ifndef HAVE_CLOCK_GETTIME
+#include <sys/time.h>
+#endif
 #include <unistd.h>
 #include <stdint.h>
 #include <pthread.h>
@@ -43,6 +46,23 @@ using namespace std;
 //-------------------------------------------------------------------
 // Utility
 //-------------------------------------------------------------------
+#if defined(CLOCK_MONOTONIC_COARSE)
+#define CLOCK_MONOTONIC_COARSE  6
+#endif
+
+#ifndef HAVE_CLOCK_GETTIME
+static int clock_gettime(int clk_id, struct timespec* ts)
+{
+  struct timeval now;
+  if(0 != gettimeofday(&now, NULL)){
+    return -1;
+  }
+  ts->tv_sec  = now.tv_sec;
+  ts->tv_nsec = now.tv_usec * 1000;
+  return 0;
+}
+#endif
+
 inline void SetStatCacheTime(struct timespec& ts)
 {
   if(-1 == clock_gettime(CLOCK_MONOTONIC_COARSE, &ts)){