Mercurial > hg > graal-compiler
diff src/share/vm/utilities/decoder_elf.cpp @ 4803:d7e3846464d0
7071311: Decoder enhancement
Summary: Made decoder thread-safe
Reviewed-by: coleenp, kamg
author | zgu |
---|---|
date | Tue, 17 Jan 2012 13:08:52 -0500 |
parents | |
children | b9a9ed0f8eeb |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/utilities/decoder_elf.cpp Tue Jan 17 13:08:52 2012 -0500 @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#include "precompiled.hpp" + +#if !defined(_WINDOWS) && !defined(__APPLE__) +#include "decoder_elf.hpp" + +ElfDecoder::~ElfDecoder() { + if (_opened_elf_files != NULL) { + delete _opened_elf_files; + _opened_elf_files = NULL; + } +} + +bool ElfDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* filepath) { + assert(filepath, "null file path"); + assert(buf != NULL && buflen > 0, "Invalid buffer"); + if (has_error()) return false; + ElfFile* file = get_elf_file(filepath); + if (file == NULL) { + return false; + } + + if (!file->decode(addr, buf, buflen, offset)) { + return false; + } + if (buf[0] != '\0') { + demangle(buf, buf, buflen); + } + return true; +} + +ElfFile* ElfDecoder::get_elf_file(const char* filepath) { + ElfFile* file; + + file = _opened_elf_files; + while (file != NULL) { + if (file->same_elf_file(filepath)) { + return file; + } + file = file->next(); + } + + file = new (std::nothrow)ElfFile(filepath); + if (file != NULL) { + if (_opened_elf_files != NULL) { + file->set_next(_opened_elf_files); + } + _opened_elf_files = file; + } + + return file; +} +#endif