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src/cpu/zero/vm/stack_zero.inline.hpp@04ff2f6cd0eb (annotated)
src/cpu/zero/vm/stack_zero.inline.hpp
Tue, 17 Oct 2017 12:58:25 +0800
- author
- aoqi
- date
- Tue, 17 Oct 2017 12:58:25 +0800
- changeset 7994
- 04ff2f6cd0eb
- parent 7599
- c6affd32651a
- parent 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * Copyright 2010 Red Hat, Inc. |
| aoqi@0 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 5 | * |
| aoqi@0 | 6 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 7 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 8 | * published by the Free Software Foundation. |
| aoqi@0 | 9 | * |
| aoqi@0 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 14 | * accompanied this code). |
| aoqi@0 | 15 | * |
| aoqi@0 | 16 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 19 | * |
| aoqi@0 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 21 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 22 | * questions. |
| aoqi@0 | 23 | * |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | |
| aoqi@0 | 26 | #ifndef CPU_ZERO_VM_STACK_ZERO_INLINE_HPP |
| aoqi@0 | 27 | #define CPU_ZERO_VM_STACK_ZERO_INLINE_HPP |
| aoqi@0 | 28 | |
| aoqi@0 | 29 | #include "runtime/thread.hpp" |
| aoqi@0 | 30 | #include "stack_zero.hpp" |
| aoqi@0 | 31 | |
| aoqi@0 | 32 | // This function should match SharkStack::CreateStackOverflowCheck |
| aoqi@0 | 33 | inline void ZeroStack::overflow_check(int required_words, TRAPS) { |
| aoqi@0 | 34 | // Check the Zero stack |
| aoqi@0 | 35 | if (available_words() < required_words) { |
| aoqi@0 | 36 | handle_overflow(THREAD); |
| aoqi@0 | 37 | return; |
| aoqi@0 | 38 | } |
| aoqi@0 | 39 | |
| aoqi@0 | 40 | // Check the ABI stack |
| aoqi@0 | 41 | if (abi_stack_available(THREAD) < 0) { |
| aoqi@0 | 42 | handle_overflow(THREAD); |
| aoqi@0 | 43 | return; |
| aoqi@0 | 44 | } |
| aoqi@0 | 45 | } |
| aoqi@0 | 46 | |
| aoqi@0 | 47 | // This method returns the amount of ABI stack available for us |
| aoqi@0 | 48 | // to use under normal circumstances. Note that the returned |
| aoqi@0 | 49 | // value can be negative. |
| aoqi@0 | 50 | inline int ZeroStack::abi_stack_available(Thread *thread) const { |
| simonis@7599 | 51 | guarantee(Thread::current() == thread, "should run in the same thread"); |
| simonis@7599 | 52 | int stack_used = thread->stack_base() - (address) &stack_used |
| simonis@7599 | 53 | + (StackYellowPages+StackRedPages+StackShadowPages) * os::vm_page_size(); |
| aoqi@0 | 54 | int stack_free = thread->stack_size() - stack_used; |
| simonis@7599 | 55 | return stack_free; |
| aoqi@0 | 56 | } |
| aoqi@0 | 57 | |
| aoqi@0 | 58 | #endif // CPU_ZERO_VM_STACK_ZERO_INLINE_HPP |
