Allow to enable/disable inline allocation via runtime function.

This will allow to artificially trigger GCs on all allocations for testing purposes.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/144543005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18787 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.cc

@@ -6397,7 +6397,7 @@ int64_t Heap::PromotedExternalMemorySize() {
 
 
 void Heap::EnableInlineAllocation() {
-  ASSERT(inline_allocation_disabled_);
+  if (!inline_allocation_disabled_) return;
   inline_allocation_disabled_ = false;
 
   // Update inline allocation limit for new space.
@@ -6406,7 +6406,7 @@ void Heap::EnableInlineAllocation() {
 
 
 void Heap::DisableInlineAllocation() {
-  ASSERT(!inline_allocation_disabled_);
+  if (inline_allocation_disabled_) return;
   inline_allocation_disabled_ = true;
 
   // Update inline allocation limit for new space.

src/runtime.cc

@@ -8744,12 +8744,21 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_CompileForOnStackReplacement) {
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_SetAllocationTimeout) {
   SealHandleScope shs(isolate);
-  ASSERT(args.length() == 2);
+  ASSERT(args.length() == 2 || args.length() == 3);
 #ifdef DEBUG
   CONVERT_SMI_ARG_CHECKED(interval, 0);
   CONVERT_SMI_ARG_CHECKED(timeout, 1);
   isolate->heap()->set_allocation_timeout(timeout);
   FLAG_gc_interval = interval;
+  if (args.length() == 3) {
+    // Enable/disable inline allocation if requested.
+    CONVERT_BOOLEAN_ARG_CHECKED(inline_allocation, 2);
+    if (inline_allocation) {
+      isolate->heap()->EnableInlineAllocation();
+    } else {
+      isolate->heap()->DisableInlineAllocation();
+    }
+  }
 #endif
   return isolate->heap()->undefined_value();
 }