94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
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#include "pch.h"
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#include "spool.h"
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static BOOL bInitialized;
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static HANDLE hQuitRequestEvent;
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void InitSleeper (void)
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{
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HANDLE hThread;
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DWORD dwThreadId; // The thread id
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DBGMSG(DBG_INFO, ("Sleeper: Constructing..\r\n"));
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// Initialize member variables
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bInitialized = TRUE;
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hQuitRequestEvent = NULL;
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// These two events are used to synchronize the working thread and the main thread
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// The request event is set when the main thread plan to terminate the working thread.
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hQuitRequestEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
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if (!hQuitRequestEvent)
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goto Cleanup;
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// Create a working thread
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hThread = CreateThread( NULL,0,
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(LPTHREAD_START_ROUTINE) SleeperSchedule,
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(LPVOID) hQuitRequestEvent,
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0,
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&dwThreadId );
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// Cleanup the handles
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if (!hThread) {
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goto Cleanup;
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}
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else {
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CloseHandle (hThread);
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}
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DBGMSG(DBG_INFO, ("Sleeper: Constructed\r\n"));
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return;
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Cleanup:
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bInitialized = FALSE;
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if (hQuitRequestEvent) {
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CloseHandle (hQuitRequestEvent);
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}
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}
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void ExitSleeper ()
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{
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DBGMSG(DBG_INFO, ("Sleeper: Destructing\r\n"));
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if (!bInitialized)
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return;
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DBGMSG(DBG_INFO, ("Sleeper: release event %x\r\n", hQuitRequestEvent));
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if (hQuitRequestEvent)
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SetEvent (hQuitRequestEvent);
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Sleep (1000);
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DBGMSG(DBG_INFO, ("Sleeper: Destructed\r\n"));
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}
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void SleeperSchedule (HANDLE hQuitRequestEvent)
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{
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DBGMSG(DBG_INFO, ("Sleeper: Schedule\r\n"));
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DWORD dwStatus;
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while (1) {
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DBGMSG(DBG_INFO, ("Sleeper: Waiting for event %x\r\n", hQuitRequestEvent));
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dwStatus = WaitForSingleObject (hQuitRequestEvent, SLEEP_INTERVAL);
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DBGMSG(DBG_INFO, ("Sleeper: Wait returns %x\r\n", dwStatus));
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switch (dwStatus) {
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case WAIT_TIMEOUT:
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//Time out, continue working
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CleanupOldJob ();
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break;
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default:
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// quit if it is either WAIT_OBJECT_0 or any other events
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DBGMSG(DBG_INFO, ("Sleeper: The working thread quit\r\n"));
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CloseHandle (hQuitRequestEvent);
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ExitThread (0);
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}
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}
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}
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