PR_AtomicDecrement

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Atomically decrements a 32-bit value.

Syntax

#include <pratom.h> 

PRInt32 PR_AtomicDecrement(PRInt32 *val);

Parameter

The function has the following parameter:

val
A pointer to the value to decrement.

Returns

The function returns the decremented value (i.e., the result).

Description

PR_AtomicDecrement first decrements the referenced variable by one. The value returned is the referenced variable's final value. The modification to memory is unconditional.