Reviewers: danno,
Description:
Implemented function that returns code age.
This may be used to display debugging information.
BUG=
Please review this at https://codereview.chromium.org/16509005/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/objects.h
M src/objects.cc
Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index
fc42fc7ecc43c263aef2dd187b5ef21dae588f73..efaf833de765f6b0daff3df3673b581ff921229b
100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -10299,8 +10299,21 @@ byte* Code::FindCodeAgeSequence() {
}
+int Code::GetAge() {
+ byte* sequence = FindCodeAgeSequence();
+ if (sequence == NULL) {
+ return Code::kNoAge;
+ }
+ Age age;
+ MarkingParity parity;
+ GetCodeAgeAndParity(sequence, &age, &parity);
+ return age;
+}
+
+
void Code::GetCodeAgeAndParity(Code* code, Age* age,
MarkingParity* parity) {
+ ASSERT(code->FindCodeAgeSequence() != NULL);
Isolate* isolate = Isolate::Current();
Builtins* builtins = isolate->builtins();
Code* stub = NULL;
Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index
756631068e719d0345e1889f9b2f63ff367237e8..5ba1214e17d51297a5180e2234b1ebb737675e0f
100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4825,6 +4825,7 @@ class Code: public HeapObject {
void MakeOlder(MarkingParity);
static bool IsYoungSequence(byte* sequence);
bool IsOld();
+ int GetAge();
void PrintDeoptLocation(int bailout_id);
@@ -4966,7 +4967,7 @@ class Code: public HeapObject {
// Code aging
byte* FindCodeAgeSequence();
- static void GetCodeAgeAndParity(Code* code, Age* age,
+ static void GetCodeAgeAndParity(Code* code, Age* age,
MarkingParity* parity);
static void GetCodeAgeAndParity(byte* sequence, Age* age,
MarkingParity* parity);
--
--
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