shmem_atomic_fetch_or

Atomically perform a fetching bitwise OR operation on a remote data object.

Definitions

C11 Synopsis

TYPE shmem_atomic_fetch_or(TYPE *dest, TYPE value, int pe);
TYPE shmem_atomic_fetch_or(shmem_ctx_t ctx, TYPE *dest, TYPE value, int pe);

where TYPE is one of the bitwise AMO types specified by Table:1

C/C++ Synopsis

TYPE shmem_TYPENAME_atomic_fetch_or(TYPE *dest, TYPE value, int pe);
TYPE shmem_ctx_TYPENAME_atomic_fetch_or(shmem_ctx_t ctx, TYPE *dest, TYPE value,
                                        int pe);

where TYPE is one of the bitwise AMO types and has a corresponding TYPENAME specified by Table:1

Datatype Reference Table

Table:1

|           TYPE          |      TYPENAME       |
|-------------------------|---------------------|
|   unsigned int          |     uint            |
|   unsigned long         |     ulong           |
|   unsigned long long    |     ulonglong       |
|   int32_t               |     int32           |
|   int64_t               |     int64           |
|   uint32_t              |     uint32          |
|   uint64_t              |     uint64          |

Arguments

ctx     The context on which to perform the operation. When this argument is
        not provided, the operation is performed on SHMEM_CTX_DEFAULT.
dest    A pointer to the remotely accessible data object to be updated.
value   The operand to the bitwise OR operation.
pe      An integer that indicates the PE number upon which is to be updated.

Description

shmem_atomic_fetch_or atomically performs a fetching bitwise OR on the
remotely accessible data object pointed to by dest at PE pe with the operand
value.

Return Values

The value pointed to by dest on PE pe immediately before the operation is
performed.

Notes

None.