author | shade |
Wed, 11 Nov 2015 01:27:36 +0300 | |
changeset 34169 | b0b7187852b7 |
parent 27669 | c2c526bc1a18 |
child 35479 | 62c12ca7a45e |
permissions | -rw-r--r-- |
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/* |
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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 |