turnidge@google.com
5f30febb45
This yields a 29% improvement on the Benchmark_UseDartApi microbenchmark. To do this, I had to split a few fields from Isolate into a BaseIsolate class. Sort of yucky. Review URL: https://chromiumcodereview.appspot.com//10008030 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@6288 260f80e4-7a28-3924-810f-c04153c831b5
118 lines
2.5 KiB
C++
118 lines
2.5 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_BASE_ISOLATE_H_
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#define VM_BASE_ISOLATE_H_
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namespace dart {
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class HandleScope;
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class StackResource;
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class Zone;
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// A BaseIsolate contains just enough functionality to allocate
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// StackResources. This allows us to inline the StackResource
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// constructor/destructor for performance.
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class BaseIsolate {
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public:
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StackResource* top_resource() const { return top_resource_; }
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void set_top_resource(StackResource* value) { top_resource_ = value; }
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Zone* current_zone() const { return current_zone_; }
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void set_current_zone(Zone* zone) { current_zone_ = zone; }
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HandleScope* top_handle_scope() const {
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#if defined(DEBUG)
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return top_handle_scope_;
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#else
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return 0;
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#endif
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}
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void set_top_handle_scope(HandleScope* handle_scope) {
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#if defined(DEBUG)
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top_handle_scope_ = handle_scope;
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#endif
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}
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int32_t no_handle_scope_depth() const {
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#if defined(DEBUG)
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return no_handle_scope_depth_;
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#else
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return 0;
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#endif
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}
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void IncrementNoHandleScopeDepth() {
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#if defined(DEBUG)
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ASSERT(no_handle_scope_depth_ < INT_MAX);
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no_handle_scope_depth_ += 1;
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#endif
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}
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void DecrementNoHandleScopeDepth() {
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#if defined(DEBUG)
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ASSERT(no_handle_scope_depth_ > 0);
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no_handle_scope_depth_ -= 1;
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#endif
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}
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int32_t no_gc_scope_depth() const {
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#if defined(DEBUG)
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return no_gc_scope_depth_;
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#else
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return 0;
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#endif
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}
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void IncrementNoGCScopeDepth() {
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#if defined(DEBUG)
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ASSERT(no_gc_scope_depth_ < INT_MAX);
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no_gc_scope_depth_ += 1;
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#endif
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}
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void DecrementNoGCScopeDepth() {
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#if defined(DEBUG)
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ASSERT(no_gc_scope_depth_ > 0);
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no_gc_scope_depth_ -= 1;
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#endif
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}
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#if defined(DEBUG)
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static void AssertCurrent(BaseIsolate* isolate);
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#endif
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protected:
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BaseIsolate()
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: top_resource_(NULL),
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#if defined(DEBUG)
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current_zone_(NULL),
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top_handle_scope_(NULL),
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no_handle_scope_depth_(0),
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no_gc_scope_depth_(0)
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#else
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current_zone_(NULL)
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#endif
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{}
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~BaseIsolate() {
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// Do not delete stack resources: top_resource_ and current_zone_.
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}
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StackResource* top_resource_;
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Zone* current_zone_;
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#if defined(DEBUG)
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HandleScope* top_handle_scope_;
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int32_t no_handle_scope_depth_;
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int32_t no_gc_scope_depth_;
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#endif
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DISALLOW_COPY_AND_ASSIGN(BaseIsolate);
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};
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} // namespace dart
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#endif // VM_BASE_ISOLATE_H_
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