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+/*
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+ * Copyright (c) 2005, The haXe Project Contributors
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+ * All rights reserved.
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions are met:
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+ *
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+ * - Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions and the following disclaimer.
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+ * - Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE HAXE PROJECT CONTRIBUTORS "AS IS" AND ANY
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+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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+ * DISCLAIMED. IN NO EVENT SHALL THE HAXE PROJECT CONTRIBUTORS BE LIABLE FOR
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+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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+ * DAMAGE.
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+ */
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+package cpp.vm;
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+
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+typedef ThreadHandle = Dynamic;
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+
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+class Thread {
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+
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+ var handle : ThreadHandle;
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+
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+ function new(h) {
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+ handle = h;
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+ }
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+
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+ /**
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+ Send a message to the thread queue. This message can be readed by using [readMessage].
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+ **/
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+ public function sendMessage( msg : Dynamic ) {
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+ thread_send(handle,msg);
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+ }
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+
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+
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+ /**
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+ Returns the current thread.
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+ **/
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+ public static function current() {
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+ return new Thread(thread_current());
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+ }
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+
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+ /**
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+ Creates a new thread that will execute the [callb] function, then exit.
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+ **/
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+ public static function create( callb : Void -> Void ) {
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+ return new Thread(thread_create(function(_) { callb(); },[]));
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+ }
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+
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+ /**
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+ Reads a message from the thread queue. If [block] is true, the function
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+ blocks until a message is available. If [block] is false, the function
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+ returns [null] if no message is available.
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+ **/
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+ public static function readMessage( block : Bool ) : Dynamic {
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+ return thread_read_message(block);
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+ }
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+
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+ function __compare(t) {
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+ return untyped handle == t.handle;
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+ }
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+
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+ /**
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+ Starts an OS message loop after [osInitialize] has been done.
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+ In that state, the UI handled by this thread will be updated and
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+ [sync] calls can be performed. The loop returns when [exitLoop] is
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+ called for this thread.
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+ **
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+ public static function osLoop() {
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+ if( os_loop == null ) throw "Please call osInitialize() first";
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+ os_loop();
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+ }
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+
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+ /**
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+ The function [f] will be called by this thread if it's in [osLoop].
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+ [sync] returns immediatly. See [osInitialize] remarks.
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+ **
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+ public function sync( f : Void -> Void ) {
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+ os_sync(handle,f);
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+ }
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+
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+ /**
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+ The function [f] will be called by this thread and the calling thread
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+ will wait until the result is available then return its value.
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+ **
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+ public function syncResult<T>( f : Void -> T ) : T {
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+ if( this == current() )
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+ return f();
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+ var v = new cpp.vm.Lock();
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+ var r = null;
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+ sync(function() {
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+ r = f();
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+ v.release();
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+ });
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+ v.wait();
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+ return r;
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+ }
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+
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+ /**
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+ Exit from [osLoop].
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+ **
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+ public function exitLoop() {
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+ os_loop_stop(handle);
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+ }
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+
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+ /**
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+ If you want to use the [osLoop], [sync] and [syncResult] methods, you
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+ need to call [osInitialize] before creating any thread or calling [current].
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+ This will load [os.ndll] library and initialize UI methods for each thread.
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+ **
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+ public static function osInitialize() {
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+ os_loop = cpp.Lib.load("os","os_loop",0);
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+ os_loop_stop = cpp.Lib.load("os","os_loop_stop",1);
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+ os_sync = cpp.Lib.load("os","os_sync",2);
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+ }
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+
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+ static var os_loop = null;
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+ static var os_loop_stop = null;
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+ static var os_sync = null;
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+ */
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+
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+ static var thread_create = cpp.Lib.load("std","thread_create",2);
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+ static var thread_current = cpp.Lib.load("std","thread_current",0);
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+ static var thread_send = cpp.Lib.load("std","thread_send",2);
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+ static var thread_read_message = cpp.Lib.load("std","thread_read_message",1);
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+
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+}
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