Progress towards making Zones independent of Isolates and Threads.

src/runtime.cc

 // Copyright 2012 the V8 project authors. 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
@@ skipping 1728 matching lines @@
   // length of a string, i.e. it is always a Smi.  We check anyway for security.
   CONVERT_SMI_ARG_CHECKED(index, 2);
   CONVERT_ARG_HANDLE_CHECKED(JSArray, last_match_info, 3);
   RUNTIME_ASSERT(last_match_info->HasFastObjectElements());
   RUNTIME_ASSERT(index >= 0);
   RUNTIME_ASSERT(index <= subject->length());
   isolate->counters()->regexp_entry_runtime()->Increment();
   Handle<Object> result = RegExpImpl::Exec(regexp,
                                            subject,
                                            index,
-                                           last_match_info);
+                                           last_match_info,
+                                           isolate->zone());
   if (result.is_null()) return Failure::Exception();
   return *result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_RegExpConstructResult) {
   ASSERT(args.length() == 3);
   CONVERT_SMI_ARG_CHECKED(elements_count, 0);
   if (elements_count < 0 ||
       elements_count > FixedArray::kMaxLength ||
@@ skipping 1287 matching lines @@
   HandleScope handles(isolate);
 
   int length = subject->length();
   Handle<String> subject_handle(subject);
   Handle<JSRegExp> regexp_handle(regexp);
   Handle<String> replacement_handle(replacement);
   Handle<JSArray> last_match_info_handle(last_match_info);
   Handle<Object> match = RegExpImpl::Exec(regexp_handle,
                                           subject_handle,
                                           0,
-                                          last_match_info_handle);
+                                          last_match_info_handle,
+                                          isolate->zone());
   if (match.is_null()) {
     return Failure::Exception();
   }
   if (match->IsNull()) {
     return *subject_handle;
   }
 
   int capture_count = regexp_handle->CaptureCount();
 
   // CompiledReplacement uses zone allocation.
@@ skipping 78 matching lines @@
     // Continue from where the match ended, unless it was an empty match.
     int next = end;
     if (start == end) {
       next = end + 1;
       if (next > length) break;
     }
 
     match = RegExpImpl::Exec(regexp_handle,
                              subject_handle,
                              next,
-                             last_match_info_handle);
+                             last_match_info_handle,
+                             isolate->zone());
     if (match.is_null()) {
       return Failure::Exception();
     }
     matched = !match->IsNull();
   } while (matched);
 
   if (prev < length) {
     builder.AddSubjectSlice(prev, length);
   }
 
@@ skipping 32 matching lines @@
           subject_handle,
           regexp_handle,
           empty_string_handle,
           last_match_info_handle);
     }
   }
 
   Handle<Object> match = RegExpImpl::Exec(regexp_handle,
                                           subject_handle,
                                           0,
-                                          last_match_info_handle);
+                                          last_match_info_handle,
+                                          isolate->zone());
   if (match.is_null()) return Failure::Exception();
   if (match->IsNull()) return *subject_handle;
 
   ASSERT(last_match_info_handle->HasFastObjectElements());
 
   int start, end;
   {
     AssertNoAllocation match_info_array_is_not_in_a_handle;
     FixedArray* match_info_array =
         FixedArray::cast(last_match_info_handle->elements());
@@ skipping 53 matching lines @@
     prev = end;
     next = end;
     // Continue from where the match ended, unless it was an empty match.
     if (start == end) {
       next++;
       if (next > length) break;
     }
     match = RegExpImpl::Exec(regexp_handle,
                              subject_handle,
                              next,
-                             last_match_info_handle);
+                             last_match_info_handle,
+                             isolate->zone());
     if (match.is_null()) return Failure::Exception();
     if (match->IsNull()) break;
 
     ASSERT(last_match_info_handle->HasFastObjectElements());
     HandleScope loop_scope(isolate);
     {
       AssertNoAllocation match_info_array_is_not_in_a_handle;
       FixedArray* match_info_array =
           FixedArray::cast(last_match_info_handle->elements());
       start = RegExpImpl::GetCapture(match_info_array, 0);
@@ skipping 392 matching lines @@
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_StringMatch) {
   ASSERT_EQ(3, args.length());
 
   CONVERT_ARG_HANDLE_CHECKED(String, subject, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSRegExp, regexp, 1);
   CONVERT_ARG_HANDLE_CHECKED(JSArray, regexp_info, 2);
   HandleScope handles;
 
-  Handle<Object> match = RegExpImpl::Exec(regexp, subject, 0, regexp_info);
+  Handle<Object> match = RegExpImpl::Exec(regexp, subject, 0, regexp_info,
+                                          isolate->zone());
 
   if (match.is_null()) {
     return Failure::Exception();
   }
   if (match->IsNull()) {
     return isolate->heap()->null_value();
   }
   int length = subject->length();
 
   ZoneScope zone_space(isolate, DELETE_ON_EXIT);
   ZoneList<int> offsets(8);
   int start;
   int end;
   do {
     {
       AssertNoAllocation no_alloc;
       FixedArray* elements = FixedArray::cast(regexp_info->elements());
       start = Smi::cast(elements->get(RegExpImpl::kFirstCapture))->value();
       end = Smi::cast(elements->get(RegExpImpl::kFirstCapture + 1))->value();
     }
     offsets.Add(start);
     offsets.Add(end);
     if (start == end) if (++end > length) break;
-    match = RegExpImpl::Exec(regexp, subject, end, regexp_info);
+    match = RegExpImpl::Exec(regexp, subject, end, regexp_info,
+                             isolate->zone());
     if (match.is_null()) {
       return Failure::Exception();
     }
   } while (!match->IsNull());
   int matches = offsets.length() / 2;
   Handle<FixedArray> elements = isolate->factory()->NewFixedArray(matches);
   Handle<String> substring = isolate->factory()->
     NewSubString(subject, offsets.at(0), offsets.at(1));
   elements->set(0, *substring);
   for (int i = 1; i < matches ; i++) {
@@ skipping 77 matching lines @@
     Isolate* isolate,
     Handle<String> subject,
     Handle<JSRegExp> regexp,
     Handle<JSArray> last_match_array,
     FixedArrayBuilder* builder) {
   ASSERT(subject->IsFlat());
   ASSERT(regexp->CaptureCount() == 0);
   int match_start = -1;
   int match_end = 0;
   int pos = 0;
-  int registers_per_match = RegExpImpl::IrregexpPrepare(regexp, subject);
+  int registers_per_match = RegExpImpl::IrregexpPrepare(regexp, subject,
+                                                        isolate->zone());
   if (registers_per_match < 0) return RegExpImpl::RE_EXCEPTION;
 
   int max_matches;
   int num_registers = RegExpImpl::GlobalOffsetsVectorSize(regexp,
                                                           registers_per_match,
                                                           &max_matches);
   OffsetsVector registers(num_registers, isolate);
   Vector<int32_t> register_vector(registers.vector(), registers.length());
   int subject_length = subject->length();
   bool first = true;
   for (;;) {  // Break on failure, return on exception.
     int num_matches = RegExpImpl::IrregexpExecRaw(regexp,
                                                   subject,
                                                   pos,
-                                                  register_vector);
+                                                  register_vector,
+                                                  isolate->zone());
     if (num_matches > 0) {
       for (int match_index = 0; match_index < num_matches; match_index++) {
         int32_t* current_match = &register_vector[match_index * 2];
         match_start = current_match[0];
         builder->EnsureCapacity(kMaxBuilderEntriesPerRegExpMatch);
         if (match_end < match_start) {
           ReplacementStringBuilder::AddSubjectSlice(builder,
                                                     match_end,
                                                     match_start);
         }
@@ skipping 49 matching lines @@
 // Only called from Runtime_RegExpExecMultiple so it doesn't need to maintain
 // separate last match info.  See comment on that function.
 static int SearchRegExpMultiple(
     Isolate* isolate,
     Handle<String> subject,
     Handle<JSRegExp> regexp,
     Handle<JSArray> last_match_array,
     FixedArrayBuilder* builder) {
 
   ASSERT(subject->IsFlat());
-  int registers_per_match = RegExpImpl::IrregexpPrepare(regexp, subject);
+  int registers_per_match = RegExpImpl::IrregexpPrepare(regexp, subject,
+                                                        isolate->zone());
   if (registers_per_match < 0) return RegExpImpl::RE_EXCEPTION;
 
   int max_matches;
   int num_registers = RegExpImpl::GlobalOffsetsVectorSize(regexp,
                                                           registers_per_match,
                                                           &max_matches);
   OffsetsVector registers(num_registers, isolate);
   Vector<int32_t> register_vector(registers.vector(), registers.length());
 
   int num_matches = RegExpImpl::IrregexpExecRaw(regexp,
                                                 subject,
                                                 0,
-                                                register_vector);
+                                                register_vector,
+                                                isolate->zone());
 
   int capture_count = regexp->CaptureCount();
   int subject_length = subject->length();
 
   // Position to search from.
   int pos = 0;
   // End of previous match. Differs from pos if match was empty.
   int match_end = 0;
   bool first = true;
 
@@ skipping 65 matching lines @@
       } else {
         pos = match_end + 1;
         if (pos > subject_length) {
           break;
         }
       }
 
       num_matches = RegExpImpl::IrregexpExecRaw(regexp,
                                                 subject,
                                                 pos,
-                                                register_vector);
+                                                register_vector,
+                                                isolate->zone());
     } while (num_matches > 0);
 
     if (num_matches != RegExpImpl::RE_EXCEPTION) {
       // Finished matching, with at least one match.
       if (match_end < subject_length) {
         ReplacementStringBuilder::AddSubjectSlice(builder,
                                                   match_end,
                                                   subject_length);
       }
 
@@ skipping 9532 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal