Expose umfMemoryTrackerGetAllocInfo

Expose a function that returns information about coarse-grain allocations, including:

• size
• base address

Rationale

UR validation layer uses urUSMGetMemAllocInfo to obtain information about size and base address for an allocation to do bounds checking: https://github.com/oneapi-src/unified-runtime/blob/main/source/loader/layers/validation/ur_validation_layer.cpp#L41 For L0 adapters, urUSMGetMemAllocInfo gets this information by asking the driver which is costly: https://github.com/oneapi-src/unified-runtime/blob/d61cf6680c7f620bd5092e2bb22524106fbdef63/source/adapters/level_zero/usm.cpp#L621

We should expose a function that would allow users to query this information directly from UMF.

API Changes

struct umf_alloc_info_t {
   void* baseAddr;
   size_t size;
   umf_memory_pool_handle_t hPool;
};

umf_result_t umfGetAllocInfo(void *ptr, umf_alloc_info_t* info);

Implementation details

Use umfMemoryTrackerGetAllocInfo

Meta

Start by reading the existing umfMemoryTrackerGetAllocInfo implementation and the public API conventions in the UMF source. Compare its required allocation details with the calls in source/loader/layers/validation/ur_validation_layer.cpp and source/adapters/level_zero/usm.cpp. Done means the proposed umf_alloc_info_t and umfGetAllocInfo API expose the requested size and base address, with relevant tests passing.