aclrtMemGetAddressRange
Applicable Products
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Function
Obtains the start address and size of the memory block to which the address to be queried belongs.
Prototype
1 | aclError aclrtMemGetAddressRange(void *ptr, void **pbase, size_t *psize) |
Parameters
Parameter |
Input/Output |
Description |
|---|---|---|
ptr |
Input |
Memory address to be queried. |
pbase |
Output |
Start address of the memory block to which the address to be queried belongs. |
psize |
Output |
Size of the memory block to which the address to be queried belongs, in bytes. |
Returns
0 on success; otherwise, failure. For details, see aclError.
References
Scenario |
aclrtMemGetAddressRange API Output |
|---|---|
Querying the device memory returned by the aclrtMalloc or aclrtMallocWithCfg API |
Start address and size of the memory block |
Querying the host memory returned by the aclrtMallocHost or aclrtMallocHostWithCfg API |
Start address and size of the memory block |
Querying the virtual memory address mapped by the aclrtReserveMemAddress, aclrtMallocPhysical, or aclrtMapMem API |
Start address and size of the mapped memory block |