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[UR][L0] Release parent of sub-buffer when sub-buffer dies #17489

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[UR][L0] Release parent of sub-buffer when sub-buffer dies #17489

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1a4c29f
[UR][L0] Release parent of sub-buffer when sub-buffer dies
steffenlarsen Mar 17, 2025
1407747
Merge remote-tracking branch 'intel/sycl' into steffen/release_parent_l0
steffenlarsen Mar 24, 2025
ac348a6
Merge remote-tracking branch 'intel/sycl' into steffen/release_parent_l0
steffenlarsen Mar 24, 2025
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5 changes: 5 additions & 0 deletions unified-runtime/source/adapters/level_zero/memory.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2341,6 +2341,11 @@ _ur_buffer::_ur_buffer(ur_context_handle_t Context, size_t Size,
LastDeviceWithValidAllocation = Device;
}

_ur_buffer::~_ur_buffer() {
if (isSubBuffer())
ur::level_zero::urMemRelease(SubBuffer->Parent);
}

ur_result_t ur_mem_handle_t_::getZeHandle(char *&ZeHandle, access_mode_t mode,
ur_device_handle_t Device,
const ur_event_handle_t *phWaitEvents,
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2 changes: 2 additions & 0 deletions unified-runtime/source/adapters/level_zero/memory.hpp
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Expand Up @@ -127,6 +127,8 @@ struct _ur_buffer final : ur_mem_handle_t_ {
_ur_buffer(ur_context_handle_t Context, size_t Size,
ur_device_handle_t Device, char *ZeMemHandle, bool OwnZeMemHandle);

~_ur_buffer();

// Returns a pointer to the USM allocation representing this PI buffer
// on the specified Device. If Device is nullptr then the returned
// USM allocation is on the device where this buffer was used the latest.
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