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Simplify device map locking using RAII

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This commit is contained in:
Aiken Harris
2026-08-06 18:48:23 +02:00
parent d05990a812
commit ba6b22f160
1 changed files with 3 additions and 5 deletions
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8
xtoskrnl/ob/devmap.cc
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@@ -28,8 +28,9 @@ OB::DeviceMap::GetGlobalDevicesDirectory(IN POBJECT_DIRECTORY Directory)
/* Assume no mapping exists */ /* Assume no mapping exists */
GlobalDevicesDirectory = NULLPTR; GlobalDevicesDirectory = NULLPTR;
/* Acquire the device map lock */ /* Enter guarded region and acquire the device map lock */
KE::PushLock::AcquireExclusivePushLock(&DeviceMapLock); KE::GuardedRegionGuard GuardedRegion;
KE::PushLockExclusiveGuard PushLock(&DeviceMapLock);
/* Check if the directory has an associated device map */ /* Check if the directory has an associated device map */
if(Directory->DeviceMap) if(Directory->DeviceMap)
@@ -38,9 +39,6 @@ OB::DeviceMap::GetGlobalDevicesDirectory(IN POBJECT_DIRECTORY Directory)
GlobalDevicesDirectory = Directory->DeviceMap->GlobalDevicesDirectory; GlobalDevicesDirectory = Directory->DeviceMap->GlobalDevicesDirectory;
} }
/* Release the device map lock */
KE::PushLock::ReleaseExclusivePushLock(&DeviceMapLock);
/* Return the resolved directory */ /* Return the resolved directory */
return GlobalDevicesDirectory; return GlobalDevicesDirectory;
} }