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7127706: G1: re-enable survivors during the initial-mark pause

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Re-enable survivors during the initial-mark pause. Afterwards, the concurrent marking threads have to scan them and mark everything reachable from them. The next GC will have to wait for the survivors to be scanned.

Reviewed-by: brutisso, johnc
This commit is contained in:
Antonios Printezis 2012-01-25 12:58:23 -05:00
parent 0fa6fc2279
commit 802519ea53
13 changed files with 425 additions and 82 deletions
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6
hotspot/src/share/vm/runtime/mutexLocker.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -126,13 +126,14 @@ Mutex* OopMapCacheAlloc_lock = NULL;
Mutex* FreeList_lock = NULL;
Monitor* SecondaryFreeList_lock = NULL;
Mutex* OldSets_lock = NULL;
Monitor* RootRegionScan_lock = NULL;
Mutex* MMUTracker_lock = NULL;
Mutex* HotCardCache_lock = NULL;
Monitor* GCTaskManager_lock = NULL;
Mutex* Management_lock = NULL;
Monitor* Service_lock = NULL;
Monitor* Service_lock = NULL;
#define MAX_NUM_MUTEX 128
static Monitor * _mutex_array[MAX_NUM_MUTEX];
@ -193,6 +194,7 @@ void mutex_init() {
def(FreeList_lock , Mutex, leaf , true );
def(SecondaryFreeList_lock , Monitor, leaf , true );
def(OldSets_lock , Mutex , leaf , true );
def(RootRegionScan_lock , Monitor, leaf , true );
def(MMUTracker_lock , Mutex , leaf , true );
def(HotCardCache_lock , Mutex , special , true );
def(EvacFailureStack_lock , Mutex , nonleaf , true );