This patch is the propagation version of https://codereview.chromium.org/10824032 patch

src/log.cc

Index: src/log.cc
===================================================================
--- src/log.cc	(revision 13276)
+++ src/log.cc	(working copy)
@@ -469,12 +469,15 @@
 
 
 void Logger::IssueCodeAddedEvent(Code* code,
+                                 Script* script,
                                  const char* name,
                                  size_t name_len) {
   JitCodeEvent event;
+  memset(&event, 0, sizeof(event));
   event.type = JitCodeEvent::CODE_ADDED;
   event.code_start = code->instruction_start();
   event.code_len = code->instruction_size();
+  event.user_data = script;
   event.name.str = name;
   event.name.len = name_len;
 
@@ -513,7 +516,44 @@
   code_event_handler_(&event);
 }
 
+void Logger::IssueAddCodeLinePosInfoEvent(JITCodeLineInfo* line_info,
+                                          int pc_offset,
+                                          int position,
+                                          bool is_statement) {
+  JitCodeEvent event;
+  event.type = JitCodeEvent::CODE_ADD_LINE_POS_INFO;
 
+  event.user_data = line_info;
+  event.line_info.offset = pc_offset;
+  event.line_info.pos = position;
+  event.line_info.is_statement = is_statement;
+
+  code_event_handler_(&event);
+}
+
+void Logger::IssueStartCodePosInfoEvent(JITCodeLineInfo* line_info) {
+  JitCodeEvent event;
+  event.type = JitCodeEvent::CODE_START_LINE_INFO_RECORDING;
+  event.user_data = line_info;
+
+  code_event_handler_(&event);
+}
+
+void Logger::IssueEndCodePosInfoEvent(Code* code, JITCodeLineInfo* line_info) {
+  JitCodeEvent event;
+  event.type = JitCodeEvent::CODE_END_LINE_INFO_RECORDING;
+
+  if (code != NULL) {
+    event.code_start = code->instruction_start();
+  } else {
+    event.code_start = 0;
+  }
+
+  event.user_data = line_info;
+
+  code_event_handler_(&event);
+}
+
 #define DECLARE_EVENT(ignore1, name) name,
 static const char* const kLogEventsNames[Logger::NUMBER_OF_LOG_EVENTS] = {
   LOG_EVENTS_AND_TAGS_LIST(DECLARE_EVENT)
@@ -897,7 +937,7 @@
     name_buffer_->AppendBytes(comment);
   }
   if (code_event_handler_ != NULL) {
-    IssueCodeAddedEvent(code, name_buffer_->get(), name_buffer_->size());
+    IssueCodeAddedEvent(code, NULL, name_buffer_->get(), name_buffer_->size());
   }
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) {
@@ -937,7 +977,7 @@
     name_buffer_->AppendString(name);
   }
   if (code_event_handler_ != NULL) {
-    IssueCodeAddedEvent(code, name_buffer_->get(), name_buffer_->size());
+    IssueCodeAddedEvent(code, NULL, name_buffer_->get(), name_buffer_->size());
   }
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) {
@@ -984,7 +1024,10 @@
     name_buffer_->AppendString(name);
   }
   if (code_event_handler_ != NULL) {
-    IssueCodeAddedEvent(code, name_buffer_->get(), name_buffer_->size());
+    IssueCodeAddedEvent(code, shared->script()->IsScript() ?
+                        Script::cast(shared->script()):NULL,

[danno, 2013/01/10 16:47:33]

nit: formatting, please define the Script* before the IssueCodeAddedEvent and
follow style guidelines (space between ),: and NULL)

+                        name_buffer_->get(),
+                        name_buffer_->size());
   }
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) {
@@ -1034,7 +1077,10 @@
     name_buffer_->AppendInt(line);
   }
   if (code_event_handler_ != NULL) {
-    IssueCodeAddedEvent(code, name_buffer_->get(), name_buffer_->size());
+    IssueCodeAddedEvent(code, shared->script()->IsScript() ?
+                              Script::cast(shared->script()):NULL,

[danno, 2013/01/10 16:47:33]

same here.

+                              name_buffer_->get(),
+                              name_buffer_->size());
   }
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) {
@@ -1075,7 +1121,7 @@
     name_buffer_->AppendInt(args_count);
   }
   if (code_event_handler_ != NULL) {
-    IssueCodeAddedEvent(code, name_buffer_->get(), name_buffer_->size());
+    IssueCodeAddedEvent(code, NULL, name_buffer_->get(), name_buffer_->size());
   }
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) {
@@ -1113,7 +1159,7 @@
     name_buffer_->AppendString(source);
   }
   if (code_event_handler_ != NULL) {
-    IssueCodeAddedEvent(code, name_buffer_->get(), name_buffer_->size());
+    IssueCodeAddedEvent(code, NULL, name_buffer_->get(), name_buffer_->size());
   }
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) {
@@ -1157,7 +1203,25 @@
   DeleteEventInternal(CODE_DELETE_EVENT, from);
 }
 
+void Logger::CodeLinePosInfoAddEvent(JITCodeLineInfo* line_info,
+                                     int pc_offset,
+                                     int position,
+                                     bool is_statement) {
+  if (code_event_handler_ != NULL)

[danno, 2013/01/10 16:47:33]

style nit: always {} around if statements that don't fit on one line

+    IssueAddCodeLinePosInfoEvent(line_info, pc_offset, position, is_statement);
+}
 
+void Logger::CodeStartLinePosInfoRecordEvent(JITCodeLineInfo* line_info) {
+  if (code_event_handler_ != NULL)

[danno, 2013/01/10 16:47:33]

style nit: always {} around if statements that don't fit on one line

+    IssueStartCodePosInfoEvent(line_info);
+}
+
+void Logger::CodeEndLinePosInfoRecordEvent(Code* code,
+                                           JITCodeLineInfo* line_info) {
+  if (code_event_handler_ != NULL)

[danno, 2013/01/10 16:47:33]

style nit: always {} around if statements that don't fit on one line

+    IssueEndCodePosInfoEvent(code, line_info);

[danno, 2013/01/10 16:47:33]

style nit: always {} around if statements that don't fit on one line

+}
+
 void Logger::SnapshotPositionEvent(Address addr, int pos) {
   if (!log_->IsEnabled()) return;
   if (FLAG_ll_prof) LowLevelSnapshotPositionEvent(addr, pos);