mirror of
https://github.com/openjdk/jdk.git
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91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
/*
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* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2010 Red Hat, Inc.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "interpreter/interpreterRuntime.hpp"
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#include "stack_zero.hpp"
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#include "stack_zero.inline.hpp"
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int ZeroStack::suggest_size(Thread *thread) const {
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assert(needs_setup(), "already set up");
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int abi_available = abi_stack_available(thread);
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assert(abi_available >= 0, "available abi stack must be >= 0");
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return align_size_down(abi_available / 2, wordSize);
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}
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void ZeroStack::handle_overflow(TRAPS) {
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JavaThread *thread = (JavaThread *) THREAD;
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// Set up the frame anchor if it isn't already
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bool has_last_Java_frame = thread->has_last_Java_frame();
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if (!has_last_Java_frame) {
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intptr_t *sp = thread->zero_stack()->sp();
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ZeroFrame *frame = thread->top_zero_frame();
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while (frame) {
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if (frame->is_shark_frame())
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break;
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if (frame->is_interpreter_frame()) {
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interpreterState istate =
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frame->as_interpreter_frame()->interpreter_state();
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if (istate->self_link() == istate)
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break;
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}
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sp = ((intptr_t *) frame) + 1;
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frame = frame->next();
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}
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if (frame == NULL)
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fatal("unrecoverable stack overflow");
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thread->set_last_Java_frame(frame, sp);
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}
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// Throw the exception
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switch (thread->thread_state()) {
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case _thread_in_Java:
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InterpreterRuntime::throw_StackOverflowError(thread);
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break;
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case _thread_in_vm:
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Exceptions::throw_stack_overflow_exception(thread, __FILE__, __LINE__,
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methodHandle());
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break;
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default:
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ShouldNotReachHere();
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}
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// Reset the frame anchor if necessary
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if (!has_last_Java_frame)
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thread->reset_last_Java_frame();
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}
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#ifndef PRODUCT
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void ZeroStack::zap(int c) {
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memset(_base, c, available_words() * wordSize);
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}
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#endif // PRODUCT
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