1 /* 2 This file is provided under a dual BSD/GPLv2 license. When using or 3 redistributing this file, you may do so under either license. 4 5 GPL LICENSE SUMMARY 6 7 Copyright(c) 2005-2012 Intel Corporation. All rights reserved. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of version 2 of the GNU General Public License as 11 published by the Free Software Foundation. 12 13 This program is distributed in the hope that it will be useful, but 14 WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 The full GNU General Public License is included in this distribution 22 in the file called LICENSE.GPL. 23 24 Contact Information: 25 http://software.intel.com/en-us/articles/intel-vtune-amplifier-xe/ 26 27 BSD LICENSE 28 29 Copyright(c) 2005-2012 Intel Corporation. All rights reserved. 30 All rights reserved. 31 32 Redistribution and use in source and binary forms, with or without 33 modification, are permitted provided that the following conditions 34 are met: 35 36 * Redistributions of source code must retain the above copyright 37 notice, this list of conditions and the following disclaimer. 38 * Redistributions in binary form must reproduce the above copyright 39 notice, this list of conditions and the following disclaimer in 40 the documentation and/or other materials provided with the 41 distribution. 42 * Neither the name of Intel Corporation nor the names of its 43 contributors may be used to endorse or promote products derived 44 from this software without specific prior written permission. 45 46 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 47 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 48 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 49 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 50 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 51 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 52 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 56 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 #include <string.h> 59 60 #ifdef WIN32 61 #include <hash_map> 62 using namespace std; 63 #else 64 // To avoid GCC 4.4 compilation warning about hash_map being deprecated. 65 #define OLD_DEPRECATED __DEPRECATED 66 #undef __DEPRECATED 67 #if defined (ANDROID) 68 #include <hash_map> 69 using namespace std; 70 #else 71 #include <ext/hash_map> 72 using namespace __gnu_cxx; 73 #endif 74 #define __DEPRECATED OLD_DEPRECATED 75 #endif 76 77 #include <list> 78 79 #include "v8-vtune.h" 80 #include "vtune-jit.h" 81 82 namespace vTune { 83 namespace internal { 84 85 86 // This class is used to record the JITted code position info for JIT 87 // code profiling. 88 class JITCodeLineInfo { 89 public: 90 JITCodeLineInfo() { } 91 92 void SetPosition(intptr_t pc, int pos) { 93 AddCodeLineInfo(LineNumInfo(pc, pos)); 94 } 95 96 struct LineNumInfo { 97 LineNumInfo(intptr_t pc, int pos) 98 : pc_(pc), pos_(pos) { } 99 100 intptr_t pc_; 101 int pos_; 102 }; 103 104 std::list<LineNumInfo>* GetLineNumInfo() { 105 return &line_num_info_; 106 } 107 108 private: 109 void AddCodeLineInfo(const LineNumInfo& line_info) { 110 line_num_info_.push_back(line_info); 111 } 112 std::list<LineNumInfo> line_num_info_; 113 }; 114 115 struct SameCodeObjects { 116 bool operator () (void* key1, void* key2) const { 117 return key1 == key2; 118 } 119 }; 120 121 struct HashForCodeObject { 122 uint32_t operator () (void* code) const { 123 static const uintptr_t kGoldenRatio = 2654435761u; 124 uintptr_t hash = reinterpret_cast<uintptr_t>(code); 125 return static_cast<uint32_t>(hash * kGoldenRatio); 126 } 127 }; 128 129 #ifdef WIN32 130 typedef hash_map<void*, void*> JitInfoMap; 131 #else 132 typedef hash_map<void*, void*, HashForCodeObject, SameCodeObjects> JitInfoMap; 133 #endif 134 135 static JitInfoMap* GetEntries() { 136 static JitInfoMap* entries; 137 if (entries == NULL) { 138 entries = new JitInfoMap(); 139 } 140 return entries; 141 } 142 143 static bool IsLineInfoTagged(void* ptr) { 144 return 0 != (reinterpret_cast<intptr_t>(ptr)); 145 } 146 147 static JITCodeLineInfo* UntagLineInfo(void* ptr) { 148 return reinterpret_cast<JITCodeLineInfo*>( 149 reinterpret_cast<intptr_t>(ptr)); 150 } 151 152 // The parameter str is a mixed pattern which contains the 153 // function name and some other info. It comes from all the 154 // Logger::CodeCreateEvent(...) function. This funtion get the 155 // pure function name from the input parameter. 156 static char* GetFunctionNameFromMixedName(const char* str, int length) { 157 int index = 0; 158 int count = 0; 159 char* start_ptr = NULL; 160 161 while (str[index++] != ':' && (index < length)) {} 162 163 if (str[index] == '*' || str[index] == '~' ) index++; 164 if (index >= length) return NULL; 165 166 start_ptr = const_cast<char*>(str + index); 167 168 while (index < length && str[index++] != ' ') { 169 count++; 170 } 171 172 char* result = new char[count + 1]; 173 memcpy(result, start_ptr, count); 174 result[count] = '\0'; 175 176 return result; 177 } 178 179 // The JitCodeEventHandler for Vtune. 180 void VTUNEJITInterface::event_handler(const v8::JitCodeEvent* event) { 181 if (VTUNERUNNING && event != NULL) { 182 switch (event->type) { 183 case v8::JitCodeEvent::CODE_ADDED: { 184 char* temp_file_name = NULL; 185 char* temp_method_name = 186 GetFunctionNameFromMixedName(event->name.str, 187 static_cast<int>(event->name.len)); 188 iJIT_Method_Load jmethod; 189 memset(&jmethod, 0, sizeof jmethod); 190 jmethod.method_id = iJIT_GetNewMethodID(); 191 jmethod.method_load_address = event->code_start; 192 jmethod.method_size = static_cast<unsigned int>(event->code_len); 193 jmethod.method_name = temp_method_name; 194 195 Handle<UnboundScript> script = event->script; 196 197 if (*script != NULL) { 198 // Get the source file name and set it to jmethod.source_file_name 199 if ((*script->GetScriptName())->IsString()) { 200 Handle<String> script_name = script->GetScriptName()->ToString(); 201 temp_file_name = new char[script_name->Utf8Length() + 1]; 202 script_name->WriteUtf8(temp_file_name); 203 jmethod.source_file_name = temp_file_name; 204 } 205 206 JitInfoMap::iterator entry = 207 GetEntries()->find(event->code_start); 208 if (entry != GetEntries()->end() && IsLineInfoTagged(entry->first)) { 209 JITCodeLineInfo* line_info = UntagLineInfo(entry->second); 210 // Get the line_num_info and set it to jmethod.line_number_table 211 std::list<JITCodeLineInfo::LineNumInfo>* vtunelineinfo = 212 line_info->GetLineNumInfo(); 213 214 jmethod.line_number_size = (unsigned int)vtunelineinfo->size(); 215 jmethod.line_number_table = 216 reinterpret_cast<LineNumberInfo*>( 217 malloc(sizeof(LineNumberInfo)*jmethod.line_number_size)); 218 219 std::list<JITCodeLineInfo::LineNumInfo>::iterator Iter; 220 int index = 0; 221 for (Iter = vtunelineinfo->begin(); 222 Iter != vtunelineinfo->end(); 223 Iter++) { 224 jmethod.line_number_table[index].Offset = 225 static_cast<unsigned int>(Iter->pc_); 226 jmethod.line_number_table[index++].LineNumber = 227 script->GetLineNumber(Iter->pos_) + 1; 228 } 229 GetEntries()->erase(event->code_start); 230 } 231 } 232 233 iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED, 234 reinterpret_cast<void*>(&jmethod)); 235 if (temp_method_name) 236 delete []temp_method_name; 237 if (temp_file_name) 238 delete []temp_file_name; 239 break; 240 } 241 // TODO(chunyang.dai (at) intel.com): code_move will be supported. 242 case v8::JitCodeEvent::CODE_MOVED: 243 break; 244 // Currently the CODE_REMOVED event is not issued. 245 case v8::JitCodeEvent::CODE_REMOVED: 246 break; 247 case v8::JitCodeEvent::CODE_ADD_LINE_POS_INFO: { 248 JITCodeLineInfo* line_info = 249 reinterpret_cast<JITCodeLineInfo*>(event->user_data); 250 if (line_info != NULL) { 251 line_info->SetPosition(static_cast<intptr_t>(event->line_info.offset), 252 static_cast<int>(event->line_info.pos)); 253 } 254 break; 255 } 256 case v8::JitCodeEvent::CODE_START_LINE_INFO_RECORDING: { 257 v8::JitCodeEvent* temp_event = const_cast<v8::JitCodeEvent*>(event); 258 temp_event->user_data = new JITCodeLineInfo(); 259 break; 260 } 261 case v8::JitCodeEvent::CODE_END_LINE_INFO_RECORDING: { 262 GetEntries()->insert(std::pair <void*, void*>(event->code_start, event->user_data)); 263 break; 264 } 265 default: 266 break; 267 } 268 } 269 return; 270 } 271 272 } // namespace internal 273 274 void InitializeVtuneForV8(v8::Isolate::CreateParams& params) { 275 v8::V8::SetFlagsFromString("--nocompact_code_space", 276 (int)strlen("--nocompact_code_space")); 277 params.code_event_handler = vTune::internal::VTUNEJITInterface::event_handler; 278 } 279 280 } // namespace vTune 281