From c7ece60e2d3715a1b37973fd503eea0848a795d5 Mon Sep 17 00:00:00 2001
From: liaogang <liaogang@baidu.com>
Date: Mon, 12 Sep 2016 19:43:12 +0800
Subject: [PATCH] add gettid syscall for MAC OS

---
 paddle/utils/Stat.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/paddle/utils/Stat.cpp b/paddle/utils/Stat.cpp
index 14aae6909d4..aab5446a98c 100644
--- a/paddle/utils/Stat.cpp
+++ b/paddle/utils/Stat.cpp
@@ -23,10 +23,14 @@ namespace paddle {
 
 // return the thread id used by glog
 pid_t getTID() {
-#ifndef __NR_gettid
-#define __NR_gettid 224
-#endif
-  pid_t tid = syscall(__NR_gettid);
+  #if defined(__APPLE__) || defined(__OSX__)
+      pid_t tid = syscall(SYS_thread_selfid);
+  #elif defined(__LINUX__)
+      #ifndef __NR_gettid
+      #define __NR_gettid 224
+      #endif
+      pid_t tid = syscall(__NR_gettid);
+  #endif
   CHECK_NE(tid, -1);
   return tid;
 }
-- 
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