/*
* Copyright ( c ) 1997 , 2022 , Oracle and / or its affiliates . All rights reserved .
* Copyright ( c ) 2017 , 2020 SAP SE . 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"
#include "jvm.h"
#include "memory/allocation.inline.hpp"
#include "utilities/decoder.hpp"
#include "utilities/vmError.hpp"
#ifndef _WINDOWS
#if defined (__APPLE__)
#include "decoder_machO.hpp"
#elif defined (AIX)
#include "decoder_aix.hpp"
#else
#include "decoder_elf.hpp"
#endif
AbstractDecoder* Decoder::_shared_decoder = NULL;
AbstractDecoder* Decoder::_error_handler_decoder = NULL;
NullDecoder Decoder::_do_nothing_decoder;
AbstractDecoder* Decoder::get_shared_instance() {
assert(shared_decoder_lock()->owned_by_self(), "Require DecoderLock to enter" );
if (_shared_decoder == NULL) {
_shared_decoder = create_decoder();
}
return _shared_decoder;
}
AbstractDecoder* Decoder::get_error_handler_instance() {
if (_error_handler_decoder == NULL) {
_error_handler_decoder = create_decoder();
}
return _error_handler_decoder;
}
AbstractDecoder* Decoder::create_decoder() {
AbstractDecoder* decoder;
#if defined (__APPLE__)
decoder = new (std::nothrow)MachODecoder();
#elif defined (AIX)
decoder = new (std::nothrow)AIXDecoder();
#else
decoder = new (std::nothrow)ElfDecoder();
#endif
if (decoder == NULL || decoder->has_error()) {
if (decoder != NULL) {
delete decoder;
}
decoder = &_do_nothing_decoder;
}
return decoder;
}
Mutex* Decoder::shared_decoder_lock() {
assert(SharedDecoder_lock != NULL, "Just check" );
return SharedDecoder_lock;
}
bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const char* modulepath, bool demangle) {
if (VMError::is_error_reported_in_current_thread()) {
return get_error_handler_instance()->decode(addr, buf, buflen, offset, modulepath, demangle);
} else {
MutexLocker locker(shared_decoder_lock(), Mutex::_no_safepoint_check_flag);
return get_shared_instance()->decode(addr, buf, buflen, offset, modulepath, demangle);
}
}
bool Decoder::decode(address addr, char* buf, int buflen, int* offset, const void * base) {
if (VMError::is_error_reported_in_current_thread()) {
return get_error_handler_instance()->decode(addr, buf, buflen, offset, base);
} else {
MutexLocker locker(shared_decoder_lock(), Mutex::_no_safepoint_check_flag);
return get_shared_instance()->decode(addr, buf, buflen, offset, base);
}
}
bool Decoder::demangle(const char* symbol, char* buf, int buflen) {
if (VMError::is_error_reported_in_current_thread()) {
return get_error_handler_instance()->demangle(symbol, buf, buflen);
} else {
MutexLocker locker(shared_decoder_lock(), Mutex::_no_safepoint_check_flag);
return get_shared_instance()->demangle(symbol, buf, buflen);
}
}
void Decoder::print_state_on(outputStream* st) {
}
bool Decoder::get_source_info(address pc, char* filename, size_t filename_len, int* line, bool is_pc_after_call) {
if (VMError::is_error_reported_in_current_thread()) {
return get_error_handler_instance()->get_source_info(pc, filename, filename_len, line, is_pc_after_call);
} else {
MutexLocker locker(shared_decoder_lock(), Mutex::_no_safepoint_check_flag);
return get_shared_instance()->get_source_info(pc, filename, filename_len, line, is_pc_after_call);
}
}
#endif // !_WINDOWS
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