| /* |
| * Copyright (c) 1997, 2017, 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 |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "runtime/safepointVerifiers.hpp" |
| #include "gc/shared/collectedHeap.hpp" |
| #include "memory/universe.hpp" |
| #include "utilities/debug.hpp" |
| |
| // Implementation of NoGCVerifier |
| |
| #ifdef ASSERT |
| |
| NoGCVerifier::NoGCVerifier(bool verifygc) { |
| _verifygc = verifygc; |
| if (_verifygc) { |
| CollectedHeap* h = Universe::heap(); |
| assert(!h->is_gc_active(), "GC active during NoGCVerifier"); |
| _old_invocations = h->total_collections(); |
| } |
| } |
| |
| |
| NoGCVerifier::~NoGCVerifier() { |
| if (_verifygc) { |
| CollectedHeap* h = Universe::heap(); |
| assert(!h->is_gc_active(), "GC active during NoGCVerifier"); |
| if (_old_invocations != h->total_collections()) { |
| fatal("collection in a NoGCVerifier secured function"); |
| } |
| } |
| } |
| |
| PauseNoGCVerifier::PauseNoGCVerifier(NoGCVerifier * ngcv) { |
| _ngcv = ngcv; |
| if (_ngcv->_verifygc) { |
| // if we were verifying, then make sure that nothing is |
| // wrong before we "pause" verification |
| CollectedHeap* h = Universe::heap(); |
| assert(!h->is_gc_active(), "GC active during NoGCVerifier"); |
| if (_ngcv->_old_invocations != h->total_collections()) { |
| fatal("collection in a NoGCVerifier secured function"); |
| } |
| } |
| } |
| |
| |
| PauseNoGCVerifier::~PauseNoGCVerifier() { |
| if (_ngcv->_verifygc) { |
| // if we were verifying before, then reenable verification |
| CollectedHeap* h = Universe::heap(); |
| assert(!h->is_gc_active(), "GC active during NoGCVerifier"); |
| _ngcv->_old_invocations = h->total_collections(); |
| } |
| } |
| |
| #endif |