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
59 #include <stdlib.h>
60 #include <string.h>
61
62 #include <list>
63 #include <unordered_map>
64
65 #include "v8-vtune.h"
66 #include "vtune-jit.h"
67
68 namespace vTune {
69 namespace internal {
70
71
72 // This class is used to record the JITted code position info for JIT
73 // code profiling.
74 class JITCodeLineInfo {
75 public:
JITCodeLineInfo()76 JITCodeLineInfo() { }
77
SetPosition(intptr_t pc,int pos)78 void SetPosition(intptr_t pc, int pos) {
79 AddCodeLineInfo(LineNumInfo(pc, pos));
80 }
81
82 struct LineNumInfo {
LineNumInfovTune::internal::JITCodeLineInfo::LineNumInfo83 LineNumInfo(intptr_t pc, int pos)
84 : pc_(pc), pos_(pos) { }
85
86 intptr_t pc_;
87 int pos_;
88 };
89
GetLineNumInfo()90 std::list<LineNumInfo>* GetLineNumInfo() {
91 return &line_num_info_;
92 }
93
94 private:
AddCodeLineInfo(const LineNumInfo & line_info)95 void AddCodeLineInfo(const LineNumInfo& line_info) {
96 line_num_info_.push_back(line_info);
97 }
98 std::list<LineNumInfo> line_num_info_;
99 };
100
101 struct SameCodeObjects {
operator ()vTune::internal::SameCodeObjects102 bool operator () (void* key1, void* key2) const {
103 return key1 == key2;
104 }
105 };
106
107 struct HashForCodeObject {
operator ()vTune::internal::HashForCodeObject108 uint32_t operator () (void* code) const {
109 static const uintptr_t kGoldenRatio = 2654435761u;
110 uintptr_t hash = reinterpret_cast<uintptr_t>(code);
111 return static_cast<uint32_t>(hash * kGoldenRatio);
112 }
113 };
114
115 typedef std::unordered_map<void*, void*, HashForCodeObject, SameCodeObjects>
116 JitInfoMap;
117
GetEntries()118 static JitInfoMap* GetEntries() {
119 static JitInfoMap* entries;
120 if (entries == NULL) {
121 entries = new JitInfoMap();
122 }
123 return entries;
124 }
125
IsLineInfoTagged(void * ptr)126 static bool IsLineInfoTagged(void* ptr) {
127 return 0 != (reinterpret_cast<intptr_t>(ptr));
128 }
129
UntagLineInfo(void * ptr)130 static JITCodeLineInfo* UntagLineInfo(void* ptr) {
131 return reinterpret_cast<JITCodeLineInfo*>(
132 reinterpret_cast<intptr_t>(ptr));
133 }
134
135 // The parameter str is a mixed pattern which contains the
136 // function name and some other info. It comes from all the
137 // Logger::CodeCreateEvent(...) function. This funtion get the
138 // pure function name from the input parameter.
GetFunctionNameFromMixedName(const char * str,int length)139 static char* GetFunctionNameFromMixedName(const char* str, int length) {
140 int index = 0;
141 int count = 0;
142 char* start_ptr = NULL;
143
144 while (str[index++] != ':' && (index < length)) {}
145
146 if (str[index] == '*' || str[index] == '~' ) index++;
147 if (index >= length) return NULL;
148
149 start_ptr = const_cast<char*>(str + index);
150
151 while (index < length && str[index++] != ' ') {
152 count++;
153 }
154
155 char* result = new char[count + 1];
156 memcpy(result, start_ptr, count);
157 result[count] = '\0';
158
159 return result;
160 }
161
162 // The JitCodeEventHandler for Vtune.
event_handler(const v8::JitCodeEvent * event)163 void VTUNEJITInterface::event_handler(const v8::JitCodeEvent* event) {
164 if (VTUNERUNNING && event != NULL) {
165 switch (event->type) {
166 case v8::JitCodeEvent::CODE_ADDED: {
167 char* temp_file_name = NULL;
168 char* temp_method_name =
169 GetFunctionNameFromMixedName(event->name.str,
170 static_cast<int>(event->name.len));
171 iJIT_Method_Load jmethod;
172 memset(&jmethod, 0, sizeof jmethod);
173 jmethod.method_id = iJIT_GetNewMethodID();
174 jmethod.method_load_address = event->code_start;
175 jmethod.method_size = static_cast<unsigned int>(event->code_len);
176 jmethod.method_name = temp_method_name;
177
178 Local<UnboundScript> script = event->script;
179
180 if (*script != NULL) {
181 // Get the source file name and set it to jmethod.source_file_name
182 if ((*script->GetScriptName())->IsString()) {
183 Local<String> script_name =
184 Local<String>::Cast(script->GetScriptName());
185 temp_file_name = new char[script_name->Utf8Length() + 1];
186 script_name->WriteUtf8(temp_file_name);
187 jmethod.source_file_name = temp_file_name;
188 }
189
190 JitInfoMap::iterator entry =
191 GetEntries()->find(event->code_start);
192 if (entry != GetEntries()->end() && IsLineInfoTagged(entry->first)) {
193 JITCodeLineInfo* line_info = UntagLineInfo(entry->second);
194 // Get the line_num_info and set it to jmethod.line_number_table
195 std::list<JITCodeLineInfo::LineNumInfo>* vtunelineinfo =
196 line_info->GetLineNumInfo();
197
198 jmethod.line_number_size = (unsigned int)vtunelineinfo->size();
199 jmethod.line_number_table =
200 reinterpret_cast<LineNumberInfo*>(
201 malloc(sizeof(LineNumberInfo)*jmethod.line_number_size));
202
203 std::list<JITCodeLineInfo::LineNumInfo>::iterator Iter;
204 int index = 0;
205 for (Iter = vtunelineinfo->begin();
206 Iter != vtunelineinfo->end();
207 Iter++) {
208 jmethod.line_number_table[index].Offset =
209 static_cast<unsigned int>(Iter->pc_);
210 jmethod.line_number_table[index++].LineNumber =
211 script->GetLineNumber(Iter->pos_) + 1;
212 }
213 GetEntries()->erase(event->code_start);
214 }
215 }
216
217 iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED,
218 reinterpret_cast<void*>(&jmethod));
219 if (temp_method_name)
220 delete []temp_method_name;
221 if (temp_file_name)
222 delete []temp_file_name;
223 break;
224 }
225 // TODO(chunyang.dai@intel.com): code_move will be supported.
226 case v8::JitCodeEvent::CODE_MOVED:
227 break;
228 // Currently the CODE_REMOVED event is not issued.
229 case v8::JitCodeEvent::CODE_REMOVED:
230 break;
231 case v8::JitCodeEvent::CODE_ADD_LINE_POS_INFO: {
232 JITCodeLineInfo* line_info =
233 reinterpret_cast<JITCodeLineInfo*>(event->user_data);
234 if (line_info != NULL) {
235 line_info->SetPosition(static_cast<intptr_t>(event->line_info.offset),
236 static_cast<int>(event->line_info.pos));
237 }
238 break;
239 }
240 case v8::JitCodeEvent::CODE_START_LINE_INFO_RECORDING: {
241 v8::JitCodeEvent* temp_event = const_cast<v8::JitCodeEvent*>(event);
242 temp_event->user_data = new JITCodeLineInfo();
243 break;
244 }
245 case v8::JitCodeEvent::CODE_END_LINE_INFO_RECORDING: {
246 GetEntries()->insert(std::pair <void*, void*>(event->code_start, event->user_data));
247 break;
248 }
249 default:
250 break;
251 }
252 }
253 return;
254 }
255
256 } // namespace internal
257
GetVtuneCodeEventHandler()258 v8::JitCodeEventHandler GetVtuneCodeEventHandler() {
259 v8::V8::SetFlagsFromString("--nocompact_code_space",
260 (int)strlen("--nocompact_code_space"));
261 return vTune::internal::VTUNEJITInterface::event_handler;
262 }
263
264 } // namespace vTune
265