mirror of
https://github.com/libretro/pcsx2.git
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ab9bdb009b
Update it to the version found at https://github.com/Microsoft/Windows-classic-samples , which is in an MIT licensed repo, and add the LICENSE file (edited to remove the SIL Open Font LICENSE part since that doesn't apply). Some modifications have been made to reduce the diff/stop git complaining (not including any file that wasn't in the previous version and removing the related header includes in streams.h, and fixing some but not all of the whitespace issues).
121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
//------------------------------------------------------------------------------
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// File: MsgThrd.h
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//
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// Desc: DirectShow base classes - provides support for a worker thread
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// class to which one can asynchronously post messages.
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//
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// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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// Message class - really just a structure.
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//
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class CMsg {
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public:
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UINT uMsg;
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DWORD dwFlags;
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LPVOID lpParam;
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CAMEvent *pEvent;
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CMsg(UINT u, DWORD dw, __inout_opt LPVOID lp, __in_opt CAMEvent *pEvnt)
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: uMsg(u), dwFlags(dw), lpParam(lp), pEvent(pEvnt) {}
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CMsg()
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: uMsg(0), dwFlags(0L), lpParam(NULL), pEvent(NULL) {}
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};
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// This is the actual thread class. It exports all the usual thread control
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// functions. The created thread is different from a normal WIN32 thread in
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// that it is prompted to perform particaular tasks by responding to messages
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// posted to its message queue.
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//
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class AM_NOVTABLE CMsgThread {
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private:
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static DWORD WINAPI DefaultThreadProc(__inout LPVOID lpParam);
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DWORD m_ThreadId;
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HANDLE m_hThread;
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protected:
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// if you want to override GetThreadMsg to block on other things
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// as well as this queue, you need access to this
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CGenericList<CMsg> m_ThreadQueue;
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CCritSec m_Lock;
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HANDLE m_hSem;
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LONG m_lWaiting;
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public:
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CMsgThread()
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: m_ThreadId(0),
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m_hThread(NULL),
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m_lWaiting(0),
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m_hSem(NULL),
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// make a list with a cache of 5 items
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m_ThreadQueue(NAME("MsgThread list"), 5)
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{
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}
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~CMsgThread();
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// override this if you want to block on other things as well
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// as the message loop
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void virtual GetThreadMsg(__out CMsg *msg);
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// override this if you want to do something on thread startup
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virtual void OnThreadInit() {
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};
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BOOL CreateThread();
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BOOL WaitForThreadExit(__out LPDWORD lpdwExitCode) {
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if (m_hThread != NULL) {
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WaitForSingleObject(m_hThread, INFINITE);
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return GetExitCodeThread(m_hThread, lpdwExitCode);
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}
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return FALSE;
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}
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DWORD ResumeThread() {
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return ::ResumeThread(m_hThread);
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}
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DWORD SuspendThread() {
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return ::SuspendThread(m_hThread);
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}
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int GetThreadPriority() {
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return ::GetThreadPriority(m_hThread);
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}
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BOOL SetThreadPriority(int nPriority) {
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return ::SetThreadPriority(m_hThread, nPriority);
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}
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HANDLE GetThreadHandle() {
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return m_hThread;
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}
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DWORD GetThreadId() {
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return m_ThreadId;
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}
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void PutThreadMsg(UINT uMsg, DWORD dwMsgFlags,
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__in_opt LPVOID lpMsgParam, __in_opt CAMEvent *pEvent = NULL) {
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CAutoLock lck(&m_Lock);
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CMsg* pMsg = new CMsg(uMsg, dwMsgFlags, lpMsgParam, pEvent);
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m_ThreadQueue.AddTail(pMsg);
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if (m_lWaiting != 0) {
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ReleaseSemaphore(m_hSem, m_lWaiting, 0);
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m_lWaiting = 0;
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}
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}
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// This is the function prototype of the function that the client
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// supplies. It is always called on the created thread, never on
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// the creator thread.
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//
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virtual LRESULT ThreadMessageProc(
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UINT uMsg, DWORD dwFlags, __inout_opt LPVOID lpParam, __in_opt CAMEvent *pEvent) = 0;
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};
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