From: Nikita Kalyazin <n.kalyazin@samsung.com>
Date: Thu, 31 Oct 2013 10:07:26 +0000 (+0400)
Subject: [IMPROVE] add cache for pid
X-Git-Tag: Tizen_SDK_2.3~124
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b74a6adfc4e8a93e93eaa8254d23a2776449ed32;p=platform%2Fcore%2Fsystem%2Fswap-probe.git

[IMPROVE] add cache for pid

As it's done for tid

Change-Id: Ieecf7ce5cc7f82bd1a9e1ad3bc078278152ab573
Signed-off-by: Nikita Kalyazin <n.kalyazin@samsung.com>
---

diff --git a/helper/libdaprobe.c b/helper/libdaprobe.c
index 01f8a78..8ed1dfb 100755
--- a/helper/libdaprobe.c
+++ b/helper/libdaprobe.c
@@ -66,6 +66,7 @@
 
 __thread int		gProbeBlockCount = 0;
 __thread int		gProbeDepth = 0;
+pid_t gPid = -1;
 __thread pid_t		gTid = -1;
 
 int			g_timerfd = 0;
@@ -184,6 +185,14 @@ static int determineCaller(char* tracestring)
 	}
 }
 
+// return current process id
+static pid_t _getpid()
+{
+	if (gPid == -1)
+		gPid = getpid();
+	return gPid;
+}
+
 // return current thread id
 static pid_t _gettid()
 {
@@ -761,7 +770,7 @@ bool setProbePoint(probeInfo_t* iProbe)
 	real_pthread_mutex_unlock(&(gTraceInfo.index.eventMutex));
 
 	iProbe->currentTime = getCurrentTime();
-	iProbe->pID = getpid();
+	iProbe->pID = _getpid();
 	iProbe->tID = _gettid();
 	iProbe->callDepth = gProbeDepth;