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98 lines
1.7 KiB
98 lines
1.7 KiB
/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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event.cpp
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Abstract:
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SIS Groveler sync event class
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Authors:
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John Douceur, 1998
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Environment:
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User Mode
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Revision History:
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--*/
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#include "all.hxx"
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SyncEvent::SyncEvent(
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bool initial_state,
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bool manual_reset)
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{
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ASSERT(this != 0);
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event_handle = CreateEvent(0, manual_reset, initial_state, 0);
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if (event_handle == 0)
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{
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DWORD err = GetLastError();
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PRINT_DEBUG_MSG((_T("GROVELER: CreateEvent() failed with error %d\n"), err));
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throw exception_create_event;
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}
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}
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SyncEvent::~SyncEvent()
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{
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ASSERT(this != 0);
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ASSERT(event_handle != 0);
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int ok = CloseHandle(event_handle);
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if (!ok)
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{
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DWORD err = GetLastError();
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PRINT_DEBUG_MSG((_T("GROVELER: CloseHandle() failed with error %d\n"), err));
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}
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event_handle = 0;
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}
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bool
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SyncEvent::set()
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{
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ASSERT(this != 0);
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ASSERT(event_handle != 0);
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BOOL ok = SetEvent(event_handle);
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if (!ok)
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{
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DWORD err = GetLastError();
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PRINT_DEBUG_MSG((_T("GROVELER: SetEvent() failed with error %d\n"), err));
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}
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return (ok != 0);
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}
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bool
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SyncEvent::reset()
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{
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ASSERT(this != 0);
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ASSERT(event_handle != 0);
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BOOL ok = ResetEvent(event_handle);
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if (!ok)
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{
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DWORD err = GetLastError();
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PRINT_DEBUG_MSG((_T("GROVELER: ResetEvent() failed with error %d\n"), err));
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}
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return (ok != 0);
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}
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bool
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SyncEvent::wait(
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unsigned int timeout)
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{
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ASSERT(this != 0);
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ASSERT(event_handle != 0);
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ASSERT(signed(timeout) >= 0);
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DWORD result = WAIT_FOR_SINGLE_OBJECT(event_handle, timeout);
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if (result != WAIT_TIMEOUT && result != WAIT_OBJECT_0)
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{
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PRINT_DEBUG_MSG((_T("GROVELER: WaitForSingleObject() returned error %d\n"),
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result));
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}
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return (result == WAIT_OBJECT_0);
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}
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