Flush the optimizing compilejob queue when doing memory pressure GCs

src/compiler.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/compiler.h"
 
 #include <algorithm>
 
 #include "src/asmjs/asm-js.h"
 #include "src/asmjs/typing-asm.h"
 #include "src/ast/ast-numbering.h"
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopeinfo.h"
 #include "src/ast/scopes.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/compilation-cache.h"
 #include "src/compiler/pipeline.h"
 #include "src/crankshaft/hydrogen.h"
 #include "src/debug/debug.h"
 #include "src/debug/liveedit.h"
 #include "src/deoptimizer.h"
 #include "src/frames-inl.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/globals.h"
+#include "src/heap/heap.h"
 #include "src/interpreter/interpreter.h"
 #include "src/isolate-inl.h"
 #include "src/log-inl.h"
 #include "src/messages.h"
 #include "src/parsing/parser.h"
 #include "src/parsing/rewriter.h"
 #include "src/parsing/scanner-character-streams.h"
 #include "src/runtime-profiler.h"
 #include "src/snapshot/code-serializer.h"
 #include "src/vm-state-inl.h"
@@ skipping 662 matching lines @@
 
   if (!isolate->optimizing_compile_dispatcher()->IsQueueAvailable()) {
     if (FLAG_trace_concurrent_recompilation) {
       PrintF("  ** Compilation queue full, will retry optimizing ");
       info->closure()->ShortPrint();
       PrintF(" later.\n");
     }
     return false;
   }
 
+  if (isolate->heap()->HighMemoryPressure()) {
+    if (FLAG_trace_concurrent_recompilation) {
+      PrintF("  ** High memory pressure, will retry optimizing ");
+      info->closure()->ShortPrint();
+      PrintF(" later.\n");
+    }
+    return false;
+  }
+
   // All handles below this point will be allocated in a deferred handle scope
   // that is detached and handed off to the background thread when we return.
   CompilationHandleScope handle_scope(info);
 
   // Parsing is not required when optimizing from existing bytecode.
   if (!info->is_optimizing_from_bytecode()) {
     if (!Compiler::ParseAndAnalyze(info->parse_info())) return false;
     EnsureFeedbackMetadata(info);
   }
 
@@ skipping 1120 matching lines @@
     DCHECK(shared->is_compiled());
     function->set_literals(cached.literals);
   } else if (shared->is_compiled()) {
     // TODO(mvstanton): pass pretenure flag to EnsureLiterals.
     JSFunction::EnsureLiterals(function);
   }
 }
 
 }  // namespace internal
 }  // namespace v8