cl_khr_global_int32_extended_atomics
Optional extensions that implement atomic operations on 32-bit signed and unsigned integers to locations in __global memory.
Description
An application that wants to use this extension will need to include the #pragma
OPENCL EXTENSION cl_khr_global_int32_extended_atomics : enable directive in the OpenCL program source.
The atomic functions supported by the cl_khr_global_int32_extended_atomics extension are
described in the following table. All of the functions listed in the following table are performed in one atomic transaction.
These transactions are atomic for the device executing these atomic functions. There is no guarantee of atomicity if the atomic operations to the same memory location are being performed by kernels executing on multiple devices.
| Function | Description |
|---|---|
int unsigned int |
Read the 32-bit value (referred to as old)
stored at location pointed by p. Compute min(old, val) and store minimum value at location pointed by p. The function returns old.
|
int unsigned int |
Read the 32-bit value (referred to as old)
stored at location pointed by p. Compute
max(old, val) and store maximum value at location
pointed by p. The function returns old.
|
int unsigned int |
Read the 32-bit value (referred to as old)
stored at location p. Compute
(old & val) and store result at location pointed to
by p. The function returns old.
|
int unsigned int |
Read the 32-bit value (referred to as old)
stored at location p. Compute
(old | val) and store result at location pointed to
by p. The function returns old.
|
int unsigned int |
Read the 32-bit value (referred to as old)
stored at location p. Compute
(old ^ val) and store result at location pointed to
by p. The function returns old.
|
Copyright © 2007-2009 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.