(svn r17339) -Codechange: move thread related files to their own directory (like done for video, music, sound, etc)

1 files changed, 136 insertions, 0 deletions

diff --git a/src/thread/thread_win32.cpp b/src/thread/thread_win32.cpp
new file mode 100644
index 000000000..e752de1ae
--- /dev/null
+++ b/src/thread/thread_win32.cpp
@@ -0,0 +1,136 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file thread_win32.cpp Win32 thread implementation of Threads. */
+
+#include "../stdafx.h"
+#include "thread.h"
+#include "../debug.h"
+#include "../core/alloc_func.hpp"
+#include <stdlib.h>
+#include <windows.h>
+#include <process.h>
+
+/**
+ * Win32 thread version for ThreadObject.
+ */
+class ThreadObject_Win32 : public ThreadObject {
+private:
+	HANDLE thread;       ///< System thread identifier.
+	uint id;             ///< Thread identifier.
+	OTTDThreadFunc proc; ///< External thread procedure.
+	void *param;         ///< Parameter for the external thread procedure.
+	bool self_destruct;  ///< Free ourselves when done?
+
+public:
+	/**
+	 * Create a win32 thread and start it, calling proc(param).
+	 */
+	ThreadObject_Win32(OTTDThreadFunc proc, void *param, bool self_destruct) :
+		thread(NULL),
+		id(0),
+		proc(proc),
+		param(param),
+		self_destruct(self_destruct)
+	{
+		this->thread = (HANDLE)_beginthreadex(NULL, 0, &stThreadProc, this, CREATE_SUSPENDED, &this->id);
+		if (this->thread == NULL) return;
+		ResumeThread(this->thread);
+	}
+
+	/* virtual */ ~ThreadObject_Win32()
+	{
+		if (this->thread != NULL) {
+			CloseHandle(this->thread);
+			this->thread = NULL;
+		}
+	}
+
+	/* virtual */ bool Exit()
+	{
+		assert(GetCurrentThreadId() == this->id);
+		/* For now we terminate by throwing an error, gives much cleaner cleanup */
+		throw OTTDThreadExitSignal();
+	}
+
+	/* virtual */ void Join()
+	{
+		/* You cannot join yourself */
+		assert(GetCurrentThreadId() != this->id);
+		WaitForSingleObject(this->thread, INFINITE);
+	}
+
+private:
+	/**
+	 * On thread creation, this function is called, which calls the real startup
+	 *  function. This to get back into the correct instance again.
+	 */
+	static uint CALLBACK stThreadProc(void *thr)
+	{
+		((ThreadObject_Win32 *)thr)->ThreadProc();
+		return 0;
+	}
+
+	/**
+	 * A new thread is created, and this function is called. Call the custom
+	 *  function of the creator of the thread.
+	 */
+	void ThreadProc()
+	{
+		try {
+			this->proc(this->param);
+		} catch (OTTDThreadExitSignal) {
+		} catch (...) {
+			NOT_REACHED();
+		}
+
+		if (self_destruct) delete this;
+	}
+};
+
+/* static */ bool ThreadObject::New(OTTDThreadFunc proc, void *param, ThreadObject **thread)
+{
+	ThreadObject *to = new ThreadObject_Win32(proc, param, thread == NULL);
+	if (thread != NULL) *thread = to;
+	return true;
+}
+
+/**
+ * Win32 thread version of ThreadMutex.
+ */
+class ThreadMutex_Win32 : public ThreadMutex {
+private:
+	CRITICAL_SECTION critical_section;
+
+public:
+	ThreadMutex_Win32()
+	{
+		InitializeCriticalSection(&this->critical_section);
+	}
+
+	/* virtual */ ~ThreadMutex_Win32()
+	{
+		DeleteCriticalSection(&this->critical_section);
+	}
+
+	/* virtual */ void BeginCritical()
+	{
+		EnterCriticalSection(&this->critical_section);
+	}
+
+	/* virtual */ void EndCritical()
+	{
+		LeaveCriticalSection(&this->critical_section);
+	}
+};
+
+/* static */ ThreadMutex *ThreadMutex::New()
+{
+	return new ThreadMutex_Win32();
+}