[VM-GC] Add a flag to abort on allocation failure

runtime/vm/pages.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/pages.h"
 
 #include "platform/address_sanitizer.h"
 #include "platform/assert.h"
 #include "vm/compiler_stats.h"
 #include "vm/gc_marker.h"
@@ skipping 214 matching lines @@
 }
 
 HeapPage* PageSpace::AllocatePage(HeapPage::PageType type) {
   const bool is_exec = (type == HeapPage::kExecutable);
   const intptr_t kVmNameSize = 128;
   char vm_name[kVmNameSize];
   Heap::RegionName(heap_, is_exec ? Heap::kCode : Heap::kOld, vm_name,
                    kVmNameSize);
   HeapPage* page = HeapPage::Allocate(kPageSizeInWords, type, vm_name);
   if (page == NULL) {
+    RELEASE_ASSERT(!FLAG_abort_on_oom);
     return NULL;
   }
 
   MutexLocker ml(pages_lock_);
   if (!is_exec) {
     if (pages_ == NULL) {
       pages_ = page;
     } else {
       pages_tail_->set_next(page);
     }
@@ skipping 1031 matching lines @@
     return 0;
   } else {
     ASSERT(total_time >= gc_time);
     int result = static_cast<int>(
         (static_cast<double>(gc_time) / static_cast<double>(total_time)) * 100);
     return result;
   }
 }
 
 }  // namespace dart