From 33fbf37feb959293b10d0b6e26d5e8ee7dff786c Mon Sep 17 00:00:00 2001
From: Mathieu Chartier <mathieuc@google.com>
Date: Mon, 7 Mar 2016 13:48:08 -0800
Subject: Add systrace logging to ScopedCodeCacheWrite

Shows if we are taking a long time to mprotect.

Bug: 27502458

(cherry picked from commit 462cd2cfa8c5fbb6548419eb8f27b448a12aca11)

Change-Id: Ic0f24641f5856b13f3b949dcd53dc01ec952d171
---
 runtime/jit/jit_code_cache.cc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/runtime/jit/jit_code_cache.cc b/runtime/jit/jit_code_cache.cc
index 1545cb7f01..0b0f926ed1 100644
--- a/runtime/jit/jit_code_cache.cc
+++ b/runtime/jit/jit_code_cache.cc
@@ -169,12 +169,16 @@ bool JitCodeCache::ContainsMethod(ArtMethod* method) {
   return false;
 }
 
-class ScopedCodeCacheWrite {
+class ScopedCodeCacheWrite : ScopedTrace {
  public:
-  explicit ScopedCodeCacheWrite(MemMap* code_map) : code_map_(code_map) {
+  explicit ScopedCodeCacheWrite(MemMap* code_map)
+      : ScopedTrace("ScopedCodeCacheWrite"),
+        code_map_(code_map) {
+    ScopedTrace trace("mprotect all");
     CHECKED_MPROTECT(code_map_->Begin(), code_map_->Size(), kProtAll);
   }
   ~ScopedCodeCacheWrite() {
+    ScopedTrace trace("mprotect code");
     CHECKED_MPROTECT(code_map_->Begin(), code_map_->Size(), kProtCode);
   }
  private:
-- 
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