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8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling

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Introduce compressed oops mode disjoint base and improve compressed heap handling.

Reviewed-by: kvn, coleenp
This commit is contained in:
Goetz Lindenmaier 2015-01-05 12:07:37 -05:00
parent 5b8ee4c102
commit 1c18aef92c
13 changed files with 530 additions and 296 deletions
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8
hotspot/src/share/vm/prims/whitebox.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2015, 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
@ -176,11 +176,11 @@ WB_END
WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
size_t granularity = os::vm_allocation_granularity();
ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
ReservedHeapSpace rhs(100 * granularity, granularity, false);
VirtualSpace vs;
vs.initialize(rhs, 50 * granularity);
//Check if constraints are complied
// Check if constraints are complied
if (!( UseCompressedOops && rhs.base() != NULL &&
Universe::narrow_oop_base() != NULL &&
Universe::narrow_oop_use_implicit_null_checks() )) {
@ -203,7 +203,7 @@ WB_END
static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
size_t magnitude, size_t iterations) {
size_t granularity = os::vm_allocation_granularity();
ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
VirtualSpace vs;
if (!vs.initialize(rhs, 0)) {
tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");