Sat, 07 Nov 2020 10:30:02 +0800
Added tag mips-jdk8u275-b01 for changeset d3b4d62f391f
1 /*
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2010 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
26 #include "precompiled.hpp"
27 #include "interpreter/interpreterRuntime.hpp"
28 #include "stack_zero.hpp"
29 #include "stack_zero.inline.hpp"
31 int ZeroStack::suggest_size(Thread *thread) const {
32 assert(needs_setup(), "already set up");
33 int abi_available = abi_stack_available(thread);
34 assert(abi_available >= 0, "available abi stack must be >= 0");
35 return align_size_down(abi_available / 2, wordSize);
36 }
38 void ZeroStack::handle_overflow(TRAPS) {
39 JavaThread *thread = (JavaThread *) THREAD;
41 // Set up the frame anchor if it isn't already
42 bool has_last_Java_frame = thread->has_last_Java_frame();
43 if (!has_last_Java_frame) {
44 intptr_t *sp = thread->zero_stack()->sp();
45 ZeroFrame *frame = thread->top_zero_frame();
46 while (frame) {
47 if (frame->is_shark_frame())
48 break;
50 if (frame->is_interpreter_frame()) {
51 interpreterState istate =
52 frame->as_interpreter_frame()->interpreter_state();
53 if (istate->self_link() == istate)
54 break;
55 }
57 sp = ((intptr_t *) frame) + 1;
58 frame = frame->next();
59 }
61 if (frame == NULL)
62 fatal("unrecoverable stack overflow");
64 thread->set_last_Java_frame(frame, sp);
65 }
67 // Throw the exception
68 switch (thread->thread_state()) {
69 case _thread_in_Java:
70 InterpreterRuntime::throw_StackOverflowError(thread);
71 break;
73 case _thread_in_vm:
74 Exceptions::throw_stack_overflow_exception(thread, __FILE__, __LINE__,
75 methodHandle());
76 break;
78 default:
79 ShouldNotReachHere();
80 }
82 // Reset the frame anchor if necessary
83 if (!has_last_Java_frame)
84 thread->reset_last_Java_frame();
85 }
87 #ifndef PRODUCT
88 void ZeroStack::zap(int c) {
89 memset(_base, c, available_words() * wordSize);
90 }
91 #endif // PRODUCT