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CodeBlocksPortable/Borland/BCC55/Include/mspthrd.h

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/*++
Copyright (c) 1998-1999 Microsoft Corporation
Module Name:
mspthrd.h
Abstract:
Definitions for MSP thread management classes.
--*/
#ifndef __MSPTHRD_H
#pragma option push -b -a8 -pc -A- /*P_O_Push*/
#define __MSPTHRD_H
//
// Commands that the worker worker thread can handle.
//
typedef enum
{
WORK_ITEM, // process a work item
STOP, // kill the worker thread.
} COMMAND;
typedef struct
{
COMMAND cmd;
LPTHREAD_START_ROUTINE pfn;
PVOID pContext;
HANDLE hEvent;
} COMMAND_NODE;
typedef struct
{
LIST_ENTRY link;
COMMAND_NODE node;
} COMMAND_QUEUE_ITEM;
class CMSPThread
{
public:
CMSPThread()
{
InitializeListHead(&m_CommandQueue);
m_hCommandEvent = NULL;
m_hThread = NULL;
m_iStartCount = 0;
}
~CMSPThread() { };
HRESULT Start();
HRESULT Stop();
// Shutdown is used to clean up the thread unconditionally. This can be
// used as an alternative to matched Start() / Stop() calls.
HRESULT Shutdown();
HRESULT ThreadProc();
HRESULT QueueWorkItem(
LPTHREAD_START_ROUTINE Function,
PVOID Context,
BOOL fSynchronous
);
private:
BOOL SignalThreadProc() { return SetEvent(m_hCommandEvent); }
private:
CMSPCritSection m_CountLock; // Protects start count
CMSPCritSection m_QueueLock; // Protects command queue
int m_iStartCount; // number of times we've been
// started minus number of times
// we've been stopped. If == 0
// then we actually stop thread.
LIST_ENTRY m_CommandQueue; // Queue of commands for thread
// to process.
HANDLE m_hCommandEvent; // Signaled to tell us to do
// something.
HANDLE m_hThread; // The thread handle. We need to
// save it so that we can wait
// for it when stopping the
// thread.
};
extern CMSPThread g_Thread;
#pragma option pop /*P_O_Pop*/
#endif // __MSPTHRD_H
// eof