archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-22 03:54:33 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6711316: Open source the Garbage-First garbage collector

Browse source 
First mercurial integration of the code for the Garbage-First garbage collector.

Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
This commit is contained in:
Y. Srinivas Ramakrishna 2008-06-05 15:57:56 -07:00
parent 39463bb3fc
commit 18f3386a98
215 changed files with 36088 additions and 1249 deletions
Download patch file Download diff file Expand all files Collapse all files

23
hotspot/src/share/vm/memory/iterator.hpp
View file

@ -26,9 +26,23 @@
class ReferenceProcessor;
// Closure provides abortability.
class Closure : public StackObj {
protected:
bool _abort;
void set_abort() { _abort = true; }
public:
Closure() : _abort(false) {}
// A subtype can use this mechanism to indicate to some iterator mapping
// functions that the iteration should cease.
bool abort() { return _abort; }
void clear_abort() { _abort = false; }
};
// OopClosure is used for iterating through roots (oop*)
class OopClosure : public StackObj {
class OopClosure : public Closure {
public:
ReferenceProcessor* _ref_processor;
OopClosure(ReferenceProcessor* rp) : _ref_processor(rp) { }
@ -55,11 +69,16 @@ class OopClosure : public StackObj {
Prefetch::style prefetch_style() { // Note that this is non-virtual.
return Prefetch::do_none;
}
// True iff this closure may be safely applied more than once to an oop
// location without an intervening "major reset" (like the end of a GC).
virtual bool idempotent() { return false; }
virtual bool apply_to_weak_ref_discovered_field() { return false; }
};
// ObjectClosure is used for iterating through an object space
class ObjectClosure : public StackObj {
class ObjectClosure : public Closure {
public:
// Called for each object.
virtual void do_object(oop obj) = 0;