Mon, 03 Jan 2011 14:09:11 -0500
6302804: Hotspot VM dies ungraceful death when C heap is exhausted in various places.
Summary: enhance the error reporting mechanism to help user to fix the problem rather than making it look like a VM error.
Reviewed-by: kvn, kamg
zgu@2364 | 1 | /* |
zgu@2364 | 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
zgu@2364 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
zgu@2364 | 4 | * |
zgu@2364 | 5 | * This code is free software; you can redistribute it and/or modify it |
zgu@2364 | 6 | * under the terms of the GNU General Public License version 2 only, as |
zgu@2364 | 7 | * published by the Free Software Foundation. |
zgu@2364 | 8 | * |
zgu@2364 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
zgu@2364 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
zgu@2364 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
zgu@2364 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
zgu@2364 | 13 | * accompanied this code). |
zgu@2364 | 14 | * |
zgu@2364 | 15 | * You should have received a copy of the GNU General Public License version |
zgu@2364 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
zgu@2364 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
zgu@2364 | 18 | * |
zgu@2364 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
zgu@2364 | 20 | * or visit www.oracle.com if you need additional information or have any |
zgu@2364 | 21 | * questions. |
zgu@2364 | 22 | * |
zgu@2364 | 23 | */ |
zgu@2364 | 24 | |
zgu@2364 | 25 | #include "precompiled.hpp" |
zgu@2364 | 26 | #include "prims/jvm.h" |
zgu@2364 | 27 | #include "utilities/decoder.hpp" |
zgu@2364 | 28 | |
zgu@2364 | 29 | Decoder::decoder_status Decoder::_decoder_status = Decoder::no_error; |
zgu@2364 | 30 | bool Decoder::_initialized = false; |
zgu@2364 | 31 | |
zgu@2364 | 32 | #ifndef _WINDOWS |
zgu@2364 | 33 | |
zgu@2364 | 34 | // Implementation of common functionalities among Solaris and Linux |
zgu@2364 | 35 | #include "utilities/elfFile.hpp" |
zgu@2364 | 36 | |
zgu@2364 | 37 | ElfFile* Decoder::_opened_elf_files = NULL; |
zgu@2364 | 38 | |
zgu@2364 | 39 | bool Decoder::can_decode_C_frame_in_vm() { |
zgu@2364 | 40 | return true; |
zgu@2364 | 41 | } |
zgu@2364 | 42 | |
zgu@2364 | 43 | void Decoder::initialize() { |
zgu@2364 | 44 | _initialized = true; |
zgu@2364 | 45 | } |
zgu@2364 | 46 | |
zgu@2364 | 47 | void Decoder::uninitialize() { |
zgu@2364 | 48 | if (_opened_elf_files != NULL) { |
zgu@2364 | 49 | delete _opened_elf_files; |
zgu@2364 | 50 | _opened_elf_files = NULL; |
zgu@2364 | 51 | } |
zgu@2364 | 52 | _initialized = false; |
zgu@2364 | 53 | } |
zgu@2364 | 54 | |
zgu@2364 | 55 | Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) { |
zgu@2364 | 56 | if (_decoder_status != no_error) { |
zgu@2364 | 57 | return _decoder_status; |
zgu@2364 | 58 | } |
zgu@2364 | 59 | |
zgu@2364 | 60 | ElfFile* file = get_elf_file(filepath); |
zgu@2364 | 61 | if (_decoder_status != no_error) { |
zgu@2364 | 62 | return _decoder_status; |
zgu@2364 | 63 | } |
zgu@2364 | 64 | |
zgu@2364 | 65 | const char* symbol = file->decode(addr, offset); |
zgu@2364 | 66 | if (file->get_status() == out_of_memory) { |
zgu@2364 | 67 | _decoder_status = out_of_memory; |
zgu@2364 | 68 | return _decoder_status; |
zgu@2364 | 69 | } else if (symbol != NULL) { |
zgu@2364 | 70 | if (!demangle(symbol, buf, buflen)) { |
zgu@2364 | 71 | jio_snprintf(buf, buflen, "%s", symbol); |
zgu@2364 | 72 | } |
zgu@2364 | 73 | return no_error; |
zgu@2364 | 74 | } else { |
zgu@2364 | 75 | return symbol_not_found; |
zgu@2364 | 76 | } |
zgu@2364 | 77 | } |
zgu@2364 | 78 | |
zgu@2364 | 79 | ElfFile* Decoder::get_elf_file(const char* filepath) { |
zgu@2364 | 80 | if (_decoder_status != no_error) { |
zgu@2364 | 81 | return NULL; |
zgu@2364 | 82 | } |
zgu@2364 | 83 | ElfFile* file = _opened_elf_files; |
zgu@2364 | 84 | while (file != NULL) { |
zgu@2364 | 85 | if (file->same_elf_file(filepath)) { |
zgu@2364 | 86 | return file; |
zgu@2364 | 87 | } |
zgu@2364 | 88 | file = file->m_next; |
zgu@2364 | 89 | } |
zgu@2364 | 90 | |
zgu@2364 | 91 | file = new ElfFile(filepath); |
zgu@2364 | 92 | if (file == NULL) { |
zgu@2364 | 93 | _decoder_status = out_of_memory; |
zgu@2364 | 94 | } |
zgu@2364 | 95 | if (_opened_elf_files != NULL) { |
zgu@2364 | 96 | file->m_next = _opened_elf_files; |
zgu@2364 | 97 | } |
zgu@2364 | 98 | |
zgu@2364 | 99 | _opened_elf_files = file; |
zgu@2364 | 100 | return file; |
zgu@2364 | 101 | } |
zgu@2364 | 102 | |
zgu@2364 | 103 | #endif |
zgu@2364 | 104 |