From 5288fadbdc1b81993c51d5044035144fccebd75e Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Fri, 12 Dec 2014 18:41:57 +0100
Subject: runtime: add tracing of runtime events

Add actual tracing of interesting runtime events.
Part of a larger tracing functionality:
https://docs.google.com/document/u/1/d/1FP5apqzBgr7ahCCgFO-yoVhk4YZrNIDNf9RybngBc14/pub
Full change:
https://codereview.appspot.com/146920043

Change-Id: Icccf54aea54e09350bb698ba6bf11532f9fbe6d3
Reviewed-on: https://go-review.googlesource.com/1451
Reviewed-by: Russ Cox <rsc@golang.org>
---
 src/runtime/malloc.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/runtime/malloc.go')

diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go
index 69eb090706..f827b9c418 100644
--- a/src/runtime/malloc.go
+++ b/src/runtime/malloc.go
@@ -368,6 +368,12 @@ func gcwork(force int32) {
 	if force == 0 {
 		gctimer.cycle.sweepterm = nanotime()
 	}
+
+	if trace.enabled {
+		traceGoSched()
+		traceGCStart()
+	}
+
 	// Pick up the remaining unswept/not being swept spans before we STW
 	for gosweepone() != ^uintptr(0) {
 		sweep.nbgsweep++
@@ -423,6 +429,11 @@ func gcwork(force int32) {
 		gccheckmark_m(startTime, eagersweep)
 	})
 
+	if trace.enabled {
+		traceGCDone()
+		traceGoStart()
+	}
+
 	// all done
 	mp.gcing = 0
 
-- 
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