BloombergLP::bsls::AtomicOperations_DefaultUint::testAndSwapUint

Synopsis

Declared in <bsls_atomicoperations_default.h>

static
unsigned int
testAndSwapUint(
    AtomicTypes::Uint* atomicUint,
    unsigned int compareValue,
    unsigned int swapValue);

Description

Conditionally set the value of the specified atomicUint to the specified swapValue if and only if the value of atomicUint equals the value of the specified compareValue, and return the initial value of atomicUint, providing the sequential consistency memory ordering guarantee. The whole operation is performed atomically.

Return Value

initial value of atomicUint before the operation

Parameters

Name	Description
atomicUint	atomic unsigned integer to test and possibly update
compareValue	expected current value of `atomicUint`
swapValue	value to store if the comparison succeeds