turnidge@google.com
1f5364cd3b
Dart_NewNativePort creates a port associated with a C handler function. When messages come in on this port, they are forwarded to the C function for processing. To support this, refactored PortMap so that it operates on a new MessageHandler type instead of directly on Isolates. For now, native ports have a dedicated single thread. Eventually we will back native ports (and possibly Isolates as well) by a shared thread pool. Review URL: https://chromiumcodereview.appspot.com//9169063 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3804 260f80e4-7a28-3924-810f-c04153c831b5
48 lines
1.4 KiB
C++
48 lines
1.4 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_NATIVE_MESSAGE_HANDLER_H_
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#define VM_NATIVE_MESSAGE_HANDLER_H_
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#include "include/dart_api.h"
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#include "vm/message.h"
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namespace dart {
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// A NativeMessageHandler accepts messages and dispatches them to
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// native C handlers.
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class NativeMessageHandler : public MessageHandler {
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public:
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NativeMessageHandler(const char* name, Dart_NativeMessageHandler func);
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~NativeMessageHandler();
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const char* name() const { return name_; }
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Dart_NativeMessageHandler func() const { return func_; }
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#if defined(DEBUG)
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// Check that it is safe to access this handler.
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void CheckAccess();
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#endif
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// Delete this handlers when its last live port is closed.
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virtual bool OwnedByPortMap() const { return true; }
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// Start a worker thread which will service messages for this handler.
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//
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// TODO(turnidge): Instead of starting a worker for each
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// NativeMessageHandler, we should instead use a shared thread pool
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// which services a queue of ready MessageHandlers. If we implement
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// this correctly, the same pool will work for
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// IsolateMessageHandlers as well.
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void StartWorker();
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private:
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char* name_;
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Dart_NativeMessageHandler func_;
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};
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} // namespace dart
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#endif // VM_NATIVE_MESSAGE_HANDLER_H_
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