truffle: src/share/vm/utilities/decoder.hpp annotate

annotate src/share/vm/utilities/decoder.hpp @ 20543:e7d0505c8a30

8059758: Footprint regressions with JDK-8038423 Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything. Reviewed-by: jwilhelm, brutisso

author	tschatzl
date	Fri, 10 Oct 2014 15:51:58 +0200
parents	55fb97c4c58d
children	4ca6dc0799b6

rev	line source
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	1 /*
17467 55fb97c4c58d 8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013 mikael parents: 12199 diff changeset	2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	4 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	7 * published by the Free Software Foundation.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	8 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	13 * accompanied this code).
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	14 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	18 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	21 * questions.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	22 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	23 */
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	24
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	25
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	26 #ifndef SHARE_VM_UTILITIES_DECODER_HPP
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	27 #define SHARE_VM_UTILITIES_DECODER_HPP
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	28
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	29 #include "memory/allocation.hpp"
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	30 #include "runtime/mutex.hpp"
12199 38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	31 #include "runtime/mutexLocker.hpp"
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	32
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4917 diff changeset	33 class AbstractDecoder : public CHeapObj<mtInternal> {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	34 public:
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	35 // status code for decoding native C frame
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	36 enum decoder_status {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	37 not_available = -10, // real decoder is not available
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	38 no_error = 0, // successfully decoded frames
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	39 out_of_memory, // out of memory
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	40 file_invalid, // invalid elf file
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	41 file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	42 helper_not_found, // could not load dbghelp.dll (Windows only)
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	43 helper_func_error, // decoding functions not found (Windows only)
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	44 helper_init_error // SymInitialize failed (Windows only)
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	45 };
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	46
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	47 // decode an pc address to corresponding function name and an offset from the beginning of
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	48 // the function
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	49 virtual bool decode(address pc, char* buf, int buflen, int* offset,
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	50 const char* modulepath = NULL) = 0;
6258 3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	51 virtual bool decode(address pc, char* buf, int buflen, int* offset, const void* base) = 0;
3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	52
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	53 // demangle a C++ symbol
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	54 virtual bool demangle(const char* symbol, char* buf, int buflen) = 0;
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	55 // if the decoder can decode symbols in vm
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	56 virtual bool can_decode_C_frame_in_vm() const = 0;
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	57
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	58 virtual decoder_status status() const {
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	59 return _decoder_status;
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	60 }
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	61
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	62 virtual bool has_error() const {
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	63 return is_error(_decoder_status);
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	64 }
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	65
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	66 static bool is_error(decoder_status status) {
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	67 return (status > 0);
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	68 }
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	69
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	70 protected:
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	71 decoder_status _decoder_status;
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	72 };
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	73
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	74 // Do nothing decoder
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	75 class NullDecoder : public AbstractDecoder {
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	76 public:
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	77 NullDecoder() {
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	78 _decoder_status = not_available;
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	79 }
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	80
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	81 ~NullDecoder() {};
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	82
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	83 virtual bool decode(address pc, char* buf, int buflen, int* offset,
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	84 const char* modulepath = NULL) {
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	85 return false;
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	86 }
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	87
6258 3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	88 virtual bool decode(address pc, char* buf, int buflen, int* offset, const void* base) {
3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	89 return false;
3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	90 }
3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	91
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	92 virtual bool demangle(const char* symbol, char* buf, int buflen) {
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	93 return false;
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	94 }
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	95
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	96 virtual bool can_decode_C_frame_in_vm() const {
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	97 return false;
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	98 }
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	99 };
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	100
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	101
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	102 class Decoder : AllStatic {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	103 public:
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	104 static bool decode(address pc, char* buf, int buflen, int* offset, const char* modulepath = NULL);
6258 3b01d0321dfa 7186778: MachO decoder implementation for MacOSX zgu parents: 6197 diff changeset	105 static bool decode(address pc, char* buf, int buflen, int* offset, const void* base);
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	106 static bool demangle(const char* symbol, char* buf, int buflen);
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	107 static bool can_decode_C_frame_in_vm();
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	108
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	109 // shutdown shared instance
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	110 static void shutdown();
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	111 protected:
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	112 // shared decoder instance, _shared_instance_lock is needed
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	113 static AbstractDecoder* get_shared_instance();
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	114 // a private instance for error handler. Error handler can be
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	115 // triggered almost everywhere, including signal handler, where
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	116 // no lock can be taken. So the shared decoder can not be used
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	117 // in this scenario.
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	118 static AbstractDecoder* get_error_handler_instance();
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	119
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	120 static AbstractDecoder* create_decoder();
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	121 private:
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	122 static AbstractDecoder* _shared_decoder;
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	123 static AbstractDecoder* _error_handler_decoder;
db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	124 static NullDecoder _do_nothing_decoder;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	125
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	126 protected:
4917 db006a85bf91 7141259: Native stack is missing in hs_err zgu parents: 4803 diff changeset	127 static Mutex* _shared_decoder_lock;
12199 38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	128 static Mutex* shared_decoder_lock();
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	129
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	130 friend class DecoderLocker;
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	131 };
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	132
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	133 class DecoderLocker : public MutexLockerEx {
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	134 AbstractDecoder* _decoder;
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	135 inline bool is_first_error_thread();
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	136 public:
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	137 DecoderLocker();
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	138 AbstractDecoder* decoder() {
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	139 return _decoder;
38f750491293 8022335: Native stack walk while generating hs_err does not work on Windows x64 iklam parents: 6258 diff changeset	140 }
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	141 };
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	142
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	143 #endif // SHARE_VM_UTILITIES_DECODER_HPP

Mercurial > hg > truffle

annotate src/share/vm/utilities/decoder.hpp @ 20543:e7d0505c8a30