Intel VTune integration for V8/D8

src/third_party/vtune/vtune-jit.cc

Index: src/third_party/vtune/vtune-jit.cc
===================================================================
--- src/third_party/vtune/vtune-jit.cc	(revision 0)
+++ src/third_party/vtune/vtune-jit.cc	(revision 0)
@@ -0,0 +1,263 @@
+/*
+  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.
+*/
+#ifdef ENABLE_VTUNE_JIT_INTERFACE
+#include <string.h>
+#include "vtune-jit.h"
+#include "../../factory.h"
+#include "../../global-handles.h"
+
+namespace v8 {
+namespace internal {
+
+Mutex* VTUNEJITInterface::vtunemutex_ = OS::CreateMutex();
+
+static bool SameCodeObjects(void* key1, void* key2) {
+  return key1 == key2;
+}
+
+
+static  HashMap* GetEntries() {
+  static HashMap* entries;
+  if (entries == NULL) {
+    entries = new HashMap(&SameCodeObjects);
+  }
+  return entries;
+}
+
+static uint32_t HashForCodeObject(void* code) {
+  static const uintptr_t kGoldenRatio = 2654435761u;
+  uintptr_t hash = reinterpret_cast<uintptr_t>(code);
+  return static_cast<uint32_t>(hash * kGoldenRatio);
+}
+
+
+static const intptr_t kLineInfoTag = 0x1;
+
+static bool IsSourceInfoAvailable(Handle<Script> script) {
+  return !script.is_null() &&
+    script->source()->IsString() &&
+    script->HasValidSource() &&
+    script->name()->IsString();
+}
+
+static bool IsLineInfoTagged(void* ptr) {
+  return 0 != (reinterpret_cast<intptr_t>(ptr));
+}
+
+
+static void* TagLineInfo(JITCodeLineInfo* ptr) {
+  return reinterpret_cast<void*>(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++] !=':');
+
+  if (str[index] == '*' || str[index] =='~' )
+    index++;
+
+  if (index < length) 
+    start_ptr = const_cast<char*>(str + index);
+  else 
+    return NULL;
+  
+  while(index < length && str[index++] != ' ') {
+    count++;
+  }
+
+  char* result = NewArray<char>(count+1);
+  index = 0;
+ 
+  while (index < count) {
+    result[index] = start_ptr[index];
+    index++;
+  }
+  result[index] = '\0';
+  
+  return result;
+}
+
+// The JitCodeEventHandler for Vtune.
+void VTUNEJITInterface::event_handler(const v8::JitCodeEvent* event) {
+  CHECK(event != NULL);
+
+  if (VTUNERUNNING) {
+    switch (event->type) {
+      case v8::JitCodeEvent::CODE_ADDED: {
+        ScopedLock lock(vtunemutex_);
+
+        char* localfilename = NULL;
+        char* methodname =  GetFunctionNameFromMixedName(event->name.str,
+                                                             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 = event->code_len;
+        jmethod.method_name = methodname;
+
+        Script* script = reinterpret_cast<Script*>(event->userdata);
+        if (script != NULL && script->name()->IsString()) {
+          Handle<String> filename = 
+                         Handle<String>(String::cast(script->name()));
+          SmartArrayPointer<char> filename_cstring = filename->ToCString(
+              DISALLOW_NULLS);
+            
+          localfilename = NewArray<char>(strlen(*filename_cstring) +1);
+          int index = 0;
+          while(filename_cstring[index] != '\0') {
+            localfilename[index] = filename_cstring[index];
+            index++;
+          }
+          localfilename[index]='\0';
+          jmethod.source_file_name = localfilename;
+
+          HashMap::Entry* entry = GetEntries()->Lookup(event->code_start,
+                                  HashForCodeObject(event->code_start),
+                                  false);
+
+          if (entry == NULL) {
+            iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED,
+                             reinterpret_cast<void*>(&jmethod));
+            return ;
+          }
+
+          if (IsLineInfoTagged(entry->value) && 
+              IsSourceInfoAvailable(Handle<Script>(script))) {
+            // Init Script Line Ends
+            GetScriptLineNumber(Handle<Script>(script), 0);
+            JITCodeLineInfo *vtunejitlineinfo_ = UntagLineInfo(entry->value);
+            List<JITCodeLineInfo::LineNumInfo>* vtunelineinfo = 
+                                              vtunejitlineinfo_->line_numinfo();
+
+            jmethod.line_number_size = vtunelineinfo->length();
+            jmethod.line_number_table = reinterpret_cast<LineNumberInfo*>(
+                       malloc(sizeof(LineNumberInfo)*jmethod.line_number_size));
+            // populate the lineinfo for the code. Filter it before
+            for (int e = 0; e < vtunelineinfo->length(); e++) {
+              JITCodeLineInfo::LineNumInfo line_info = vtunelineinfo->at(e);
+              jmethod.line_number_table[e].Offset = line_info.pc_;
+              jmethod.line_number_table[e].LineNumber = 
+              GetScriptLineNumberSafe(Handle<Script>(script),line_info.pos_)+1;
+            }
+            delete vtunelineinfo;
+          }
+          GetEntries()->Remove(event->code_start,
+                               HashForCodeObject(event->code_start));
+          VTUNEDEBUG(PrintF("Filename: %s,  MethodName: %s\n",
+                            jmethod.source_file_name,
+                            jmethod.method_name));
+        }
+
+        iJIT_NotifyEvent(iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED,
+                         reinterpret_cast<void*>(&jmethod));
+
+        DeleteArray(methodname);
+        DeleteArray(localfilename);
+      }
+      break;
+    case v8::JitCodeEvent::CODE_MOVED:
+      VTUNEDEBUG(PrintF("move %p --\n", event->new_code_start));
+      break;
+    case v8::JitCodeEvent::CODE_REMOVED:
+      VTUNEDEBUG(PrintF("remove code %p --\n", event->new_code_start));
+      break;
+    case v8::JitCodeEvent::CODE_ADD_LINE_POS_INFO: {
+      JITCodeLineInfo* lineinfo = 
+                       reinterpret_cast<JITCodeLineInfo*>(event->userdata);
+      if (lineinfo != NULL)
+        lineinfo->SetPosition(event->line_info.offset,
+                              event->line_info.pos,
+                              event->line_info.is_statement);
+      } 
+      break;
+    case v8::JitCodeEvent::CODE_START_LINE_INFO_RECORDING:
+      VTUNEDEBUG(PrintF("start line info record\n"));
+      break;
+    case v8::JitCodeEvent::CODE_END_LINE_INFO_RECORDING: { 
+      ScopedLock lock(vtunemutex_);
+      HashMap::Entry* entry = GetEntries()->Lookup(event->code_start,
+                              HashForCodeObject(event->code_start),
+                              true);
+      ASSERT(entry->value == NULL);
+      entry->value = TagLineInfo(
+                     reinterpret_cast<JITCodeLineInfo*>(event->userdata));
+      }
+      break;
+    default:
+      CHECK(false);
+      break;
+    }
+  }
+  return;
+}
+
+}}
+#endif