fxwaitlock.cpp

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/*++
 
Copyright (c) Microsoft Corporation
 
Module Name:
 
    FxWaitLock.cpp
 
Abstract:
 
    This module implements the FxWaitLock's factory method.
 
Author:
 
 
Revision History:
 
 
--*/
 
#include "fxsupportpch.hpp"
 
#if defined(EVENT_TRACING)
// Tracing support
extern "C" {
#include "fxwaitlock.tmh"
}
#endif
 
__checkReturn
NTSTATUS
FxWaitLock::_Create(
    __in PFX_DRIVER_GLOBALS         FxDriverGlobals,
    __in_opt PWDF_OBJECT_ATTRIBUTES Attributes,
    __in_opt FxObject*              ParentObject,
    __in BOOLEAN                    AssignDriverAsDefaultParent,
    __out WDFWAITLOCK*              LockHandle
    )
{
    FxWaitLock*     lock;
    NTSTATUS        status;
 
    *LockHandle = NULL;
 
    lock = new (FxDriverGlobals, Attributes) FxWaitLock(FxDriverGlobals);
    if (lock == NULL) {
        status = STATUS_INSUFFICIENT_RESOURCES;
        DoTraceLevelMessage(FxDriverGlobals, TRACE_LEVEL_ERROR, TRACINGIO,
                            "Memory allocation failed: %!STATUS!", status);
        return status;
    }
 
    status = lock->Initialize();
    if (!NT_SUCCESS(status)) {
        lock->DeleteFromFailedCreate();
        DoTraceLevelMessage(FxDriverGlobals, TRACE_LEVEL_ERROR, TRACINGIO,
                            "faield to initialize wait lock: %!STATUS!", status);
        return status;
    }
 
    status = lock->Commit(Attributes,
                          (WDFOBJECT*)LockHandle,
                          ParentObject,
                          AssignDriverAsDefaultParent);
 
    if (!NT_SUCCESS(status)) {
        lock->DeleteFromFailedCreate();
    }
 
    return status;
}