Revision: 15083
Author: [email protected]
Date: Wed Jun 12 05:39:15 2013
Log: Implemented function that returns code age.
This may be used to display debugging information.
BUG=
[email protected], [email protected]
Review URL: https://codereview.chromium.org/16509005
http://code.google.com/p/v8/source/detail?r=15083
Modified:
/branches/bleeding_edge/src/mark-compact.cc
/branches/bleeding_edge/src/objects.cc
/branches/bleeding_edge/src/objects.h
=======================================
--- /branches/bleeding_edge/src/mark-compact.cc Wed Jun 12 02:43:22 2013
+++ /branches/bleeding_edge/src/mark-compact.cc Wed Jun 12 05:39:15 2013
@@ -1004,7 +1004,7 @@
if (!code_mark.Get()) {
if (FLAG_trace_code_flushing && shared->is_compiled()) {
SmartArrayPointer<char> name = shared->DebugName()->ToCString();
- PrintF("[code-flushing clears: %s]\n", *name);
+ PrintF("[code-flushing clears: %s - age: %d]\n", *name,
code->GetAge());
}
shared->set_code(lazy_compile);
candidate->set_code(lazy_compile);
@@ -1045,7 +1045,7 @@
if (!code_mark.Get()) {
if (FLAG_trace_code_flushing && candidate->is_compiled()) {
SmartArrayPointer<char> name = candidate->DebugName()->ToCString();
- PrintF("[code-flushing clears: %s]\n", *name);
+ PrintF("[code-flushing clears: %s - age: %d]\n", *name,
code->GetAge());
}
candidate->set_code(lazy_compile);
}
=======================================
--- /branches/bleeding_edge/src/objects.cc Wed Jun 12 02:43:22 2013
+++ /branches/bleeding_edge/src/objects.cc Wed Jun 12 05:39:15 2013
@@ -10297,6 +10297,18 @@
? instruction_start() + prologue_offset()
: NULL;
}
+
+
+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,
=======================================
--- /branches/bleeding_edge/src/objects.h Wed Jun 12 02:43:22 2013
+++ /branches/bleeding_edge/src/objects.h Wed Jun 12 05:39:15 2013
@@ -4825,6 +4825,7 @@
void MakeOlder(MarkingParity);
static bool IsYoungSequence(byte* sequence);
bool IsOld();
+ int GetAge();
void PrintDeoptLocation(int bailout_id);
@@ -4966,8 +4967,8 @@
// Code aging
byte* FindCodeAgeSequence();
- static void GetCodeAgeAndParity(Code* code, Age* age,
- MarkingParity* parity);
+ static void GetCodeAgeAndParity(Code* code, Age* age,
+ MarkingParity* parity);
static void GetCodeAgeAndParity(byte* sequence, Age* age,
MarkingParity* parity);
static Code* GetCodeAgeStub(Age age, MarkingParity parity);
--
--
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