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137 lines
2.1 KiB
C
137 lines
2.1 KiB
C
/*++
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Copyright (c) Microsoft Corporation
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ModuleName:
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MxPagedLockKm.h
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Abstract:
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Kernel mode implementation of paged lock defined in
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MxPagedLock.h
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Author:
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Revision History:
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--*/
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#pragma once
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#include "DbgMacros.h"
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typedef FAST_MUTEX MdPagedLock;
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#include "MxPagedLock.h"
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__inline
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MxPagedLock::MxPagedLock(
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)
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{
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CLEAR_DBGFLAG_INITIALIZED;
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//
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// Temporarily call initialize from c'tor
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// so that we don't have to churn all of the KMDF code
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//
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#ifndef MERGE_COMPLETE
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(VOID) MxPagedLock::Initialize();
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#endif
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}
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__inline
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NTSTATUS
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#pragma prefast(suppress:__WARNING_UNMATCHED_DEFN, "_Must_inspect_result_ not needed in kernel mode as the function always succeeds");
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MxPagedLockNoDynam::Initialize(
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)
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{
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ExInitializeFastMutex(&m_Lock);
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SET_DBGFLAG_INITIALIZED;
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return STATUS_SUCCESS;
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}
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__drv_maxIRQL(APC_LEVEL)
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__drv_setsIRQL(APC_LEVEL)
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__drv_savesIRQLGlobal(FastMutexObject, this->m_Lock)
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_Acquires_lock_(this->m_Lock)
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__inline
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VOID
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MxPagedLockNoDynam::Acquire(
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)
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{
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ASSERT_DBGFLAG_INITIALIZED;
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ExAcquireFastMutex(&m_Lock);
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}
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__inline
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VOID
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MxPagedLockNoDynam::AcquireUnsafe(
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)
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{
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ASSERT_DBGFLAG_INITIALIZED;
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ExAcquireFastMutexUnsafe(&m_Lock);
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}
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_Must_inspect_result_
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__drv_maxIRQL(APC_LEVEL)
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__drv_savesIRQLGlobal(FastMutexObject, this->m_Lock)
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__drv_valueIs(==1;==0)
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__drv_when(return==1, __drv_setsIRQL(APC_LEVEL))
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_When_(return==1, _Acquires_lock_(this->m_Lock))
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__inline
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BOOLEAN
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MxPagedLockNoDynam::TryToAcquire(
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)
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{
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ASSERT_DBGFLAG_INITIALIZED;
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return ExTryToAcquireFastMutex(&m_Lock);
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}
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__drv_requiresIRQL(APC_LEVEL)
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__drv_restoresIRQLGlobal(FastMutexObject, this->m_Lock)
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_Releases_lock_(this->m_Lock)
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__inline
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VOID
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MxPagedLockNoDynam::Release(
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)
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{
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ASSERT_DBGFLAG_INITIALIZED;
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ExReleaseFastMutex(&m_Lock);
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}
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__inline
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VOID
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MxPagedLockNoDynam::ReleaseUnsafe(
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)
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{
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ASSERT_DBGFLAG_INITIALIZED;
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ExReleaseFastMutexUnsafe(&m_Lock);
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}
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__inline
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VOID
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MxPagedLockNoDynam::Uninitialize(
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)
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{
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CLEAR_DBGFLAG_INITIALIZED;
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}
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__inline
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MxPagedLock::~MxPagedLock(
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)
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{
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CLEAR_DBGFLAG_INITIALIZED;
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}
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