[heap] New API for increasing the heap limit for debugging.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 8422 matching lines @@
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   isolate->heap()->MemoryPressureNotification(level, Locker::IsLocked(this));
   isolate->allocator()->MemoryPressureNotification(level);
 }
 
 void Isolate::SetRAILMode(RAILMode rail_mode) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   return isolate->SetRAILMode(rail_mode);
 }
 
+void Isolate::IncreaseHeapLimitForDebugging() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->heap()->IncreaseHeapLimitForDebugging();
+}
+
+void Isolate::RestoreOriginalHeapLimit() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  isolate->heap()->RestoreOriginalHeapLimit();
+}
+
 void Isolate::SetJitCodeEventHandler(JitCodeEventOptions options,
                                      JitCodeEventHandler event_handler) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   // Ensure that logging is initialized for our isolate.
   isolate->InitializeLoggingAndCounters();
   isolate->logger()->SetCodeEventHandler(options, event_handler);
 }
 
 
 void Isolate::SetStackLimit(uintptr_t stack_limit) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   CHECK(stack_limit);
   isolate->stack_guard()->SetStackLimit(stack_limit);
 }
 
-
 void Isolate::GetCodeRange(void** start, size_t* length_in_bytes) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   if (isolate->heap()->memory_allocator()->code_range()->valid()) {
     *start = isolate->heap()->memory_allocator()->code_range()->start();
     *length_in_bytes =
         isolate->heap()->memory_allocator()->code_range()->size();
   } else {
     *start = NULL;
     *length_in_bytes = 0;
   }
@@ skipping 1453 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8