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:
JITCodeLineInfo()90 JITCodeLineInfo() { }
91
SetPosition(intptr_t pc,int pos)92 void SetPosition(intptr_t pc, int pos) {
93 AddCodeLineInfo(LineNumInfo(pc, pos));
94 }
95
96 struct LineNumInfo {
LineNumInfovTune::internal::JITCodeLineInfo::LineNumInfo97 LineNumInfo(intptr_t pc, int pos)
98 : pc_(pc), pos_(pos) { }
99
100 intptr_t pc_;
101 int pos_;
102 };
103
GetLineNumInfo()104 std::list<LineNumInfo>* GetLineNumInfo() {
105 return &line_num_info_;
106 }
107
108 private:
AddCodeLineInfo(const LineNumInfo & line_info)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 {
operator ()vTune::internal::SameCodeObjects116 bool operator () (void* key1, void* key2) const {
117 return key1 == key2;
118 }
119 };
120
121 struct HashForCodeObject {
operator ()vTune::internal::HashForCodeObject122 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
GetEntries()135 static JitInfoMap* GetEntries() {
136 static JitInfoMap* entries;
137 if (entries == NULL) {
138 entries = new JitInfoMap();
139 }
140 return entries;
141 }
142
IsLineInfoTagged(void * ptr)143 static bool IsLineInfoTagged(void* ptr) {
144 return 0 != (reinterpret_cast<intptr_t>(ptr));
145 }
146
UntagLineInfo(void * ptr)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.
GetFunctionNameFromMixedName(const char * str,int length)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.
event_handler(const v8::JitCodeEvent * event)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@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
InitializeVtuneForV8(v8::Isolate::CreateParams & params)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