vtune-jit.cc 8.89 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
/*
  This file is provided under a dual BSD/GPLv2 license.  When using or
  redistributing this file, you may do so under either license.

  GPL LICENSE SUMMARY

  Copyright(c) 2005-2012 Intel Corporation. All rights reserved.

  This program is free software; you can redistribute it and/or modify
  it under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program 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 for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  The full GNU General Public License is included in this distribution
  in the file called LICENSE.GPL.

  Contact Information:
  http://software.intel.com/en-us/articles/intel-vtune-amplifier-xe/

  BSD LICENSE

  Copyright(c) 2005-2012 Intel Corporation. All rights reserved.
  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the
      distribution.
    * Neither the name of Intel Corporation nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

59 60
#include <stdlib.h>
#include <string.h>
61

62
#include <list>
63
#include <unordered_map>
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114

#include "v8-vtune.h"
#include "vtune-jit.h"

namespace vTune {
namespace internal {


// This class is used to record the JITted code position info for JIT
// code profiling.
class JITCodeLineInfo {
 public:
  JITCodeLineInfo() { }

  void SetPosition(intptr_t pc, int pos) {
    AddCodeLineInfo(LineNumInfo(pc, pos));
  }

  struct LineNumInfo {
    LineNumInfo(intptr_t pc, int pos)
        : pc_(pc), pos_(pos) { }

    intptr_t pc_;
    int pos_;
  };

  std::list<LineNumInfo>* GetLineNumInfo() {
    return &line_num_info_;
  }

 private:
  void AddCodeLineInfo(const LineNumInfo& line_info) {
	  line_num_info_.push_back(line_info);
  }
  std::list<LineNumInfo> line_num_info_;
};

struct SameCodeObjects {
  bool operator () (void* key1, void* key2) const {
    return key1 == key2;
  }
};

struct HashForCodeObject {
  uint32_t operator () (void* code) const {
    static const uintptr_t kGoldenRatio = 2654435761u;
    uintptr_t hash = reinterpret_cast<uintptr_t>(code);
    return static_cast<uint32_t>(hash * kGoldenRatio);
  }
};

115 116
typedef std::unordered_map<void*, void*, HashForCodeObject, SameCodeObjects>
    JitInfoMap;
117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177

static JitInfoMap* GetEntries() {
  static JitInfoMap* entries;
  if (entries == NULL) {
    entries = new JitInfoMap();
  }
  return entries;
}

static bool IsLineInfoTagged(void* ptr) {
  return 0 != (reinterpret_cast<intptr_t>(ptr));
}

static JITCodeLineInfo* UntagLineInfo(void* ptr) {
  return reinterpret_cast<JITCodeLineInfo*>(
    reinterpret_cast<intptr_t>(ptr));
}

// The parameter str is a mixed pattern which contains the
// function name and some other info. It comes from all the
// Logger::CodeCreateEvent(...) function. This funtion get the
// pure function name from the input parameter.
static char* GetFunctionNameFromMixedName(const char* str, int length) {
  int index = 0;
  int count = 0;
  char* start_ptr = NULL;

  while (str[index++] != ':' && (index < length)) {}

  if (str[index] == '*' || str[index] == '~' ) index++;
  if (index >= length) return NULL;

  start_ptr = const_cast<char*>(str + index);

  while (index < length && str[index++] != ' ') {
    count++;
  }

  char* result = new char[count + 1];
  memcpy(result, start_ptr, count);
  result[count] = '\0';

  return result;
}

// The JitCodeEventHandler for Vtune.
void VTUNEJITInterface::event_handler(const v8::JitCodeEvent* event) {
  if (VTUNERUNNING && event != NULL) {
    switch (event->type) {
      case v8::JitCodeEvent::CODE_ADDED: {
        char* temp_file_name = NULL;
        char* temp_method_name =
            GetFunctionNameFromMixedName(event->name.str,
                                         static_cast<int>(event->name.len));
        iJIT_Method_Load jmethod;
        memset(&jmethod, 0, sizeof jmethod);
        jmethod.method_id = iJIT_GetNewMethodID();
        jmethod.method_load_address = event->code_start;
        jmethod.method_size = static_cast<unsigned int>(event->code_len);
        jmethod.method_name = temp_method_name;

178
        Local<UnboundScript> script = event->script;
179

180 181
        if (*script != NULL) {
          // Get the source file name and set it to jmethod.source_file_name
182
          if ((*script->GetScriptName())->IsString()) {
183 184
            Local<String> script_name =
                Local<String>::Cast(script->GetScriptName());
185 186
            temp_file_name = new char[script_name->Utf8Length() + 1];
            script_name->WriteUtf8(temp_file_name);
187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
            jmethod.source_file_name = temp_file_name;
          }

          JitInfoMap::iterator entry =
              GetEntries()->find(event->code_start);
          if (entry != GetEntries()->end() && IsLineInfoTagged(entry->first)) {
            JITCodeLineInfo* line_info = UntagLineInfo(entry->second);
            // Get the line_num_info and set it to jmethod.line_number_table
            std::list<JITCodeLineInfo::LineNumInfo>* vtunelineinfo =
                line_info->GetLineNumInfo();

            jmethod.line_number_size = (unsigned int)vtunelineinfo->size();
            jmethod.line_number_table =
                reinterpret_cast<LineNumberInfo*>(
                    malloc(sizeof(LineNumberInfo)*jmethod.line_number_size));

            std::list<JITCodeLineInfo::LineNumInfo>::iterator Iter;
            int index = 0;
            for (Iter = vtunelineinfo->begin();
                 Iter != vtunelineinfo->end();
                 Iter++) {
              jmethod.line_number_table[index].Offset =
                  static_cast<unsigned int>(Iter->pc_);
              jmethod.line_number_table[index++].LineNumber =
211
                  script->GetLineNumber(Iter->pos_) + 1;
212 213 214
            }
            GetEntries()->erase(event->code_start);
          }
215
        }
216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247

        iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED,
                         reinterpret_cast<void*>(&jmethod));
        if (temp_method_name)
          delete []temp_method_name;
        if (temp_file_name)
          delete []temp_file_name;
        break;
      }
      // TODO(chunyang.dai@intel.com): code_move will be supported.
      case v8::JitCodeEvent::CODE_MOVED:
        break;
      // Currently the CODE_REMOVED event is not issued.
      case v8::JitCodeEvent::CODE_REMOVED:
        break;
      case v8::JitCodeEvent::CODE_ADD_LINE_POS_INFO: {
        JITCodeLineInfo* line_info =
            reinterpret_cast<JITCodeLineInfo*>(event->user_data);
        if (line_info != NULL) {
          line_info->SetPosition(static_cast<intptr_t>(event->line_info.offset),
                                 static_cast<int>(event->line_info.pos));
        }
        break;
      }
      case v8::JitCodeEvent::CODE_START_LINE_INFO_RECORDING: {
        v8::JitCodeEvent* temp_event = const_cast<v8::JitCodeEvent*>(event);
        temp_event->user_data = new JITCodeLineInfo();
        break;
      }
      case v8::JitCodeEvent::CODE_END_LINE_INFO_RECORDING: {
        GetEntries()->insert(std::pair <void*, void*>(event->code_start, event->user_data));
        break;
248
      }
249 250 251
      default:
        break;
    }
252
  }
253 254 255 256 257
  return;
}

}  // namespace internal

258
v8::JitCodeEventHandler GetVtuneCodeEventHandler() {
259 260
  v8::V8::SetFlagsFromString("--nocompact_code_space",
                             (int)strlen("--nocompact_code_space"));
261
  return vTune::internal::VTUNEJITInterface::event_handler;
262 263 264
}

}  // namespace vTune