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68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* GLOBAL FUNCTIONS:
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** DESCRIPTION:
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** PR Atomic operations
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*/
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#ifndef pratom_h___
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#define pratom_h___
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#include "prtypes.h"
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PR_BEGIN_EXTERN_C
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/*
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** FUNCTION: PR_AtomicIncrement
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** DESCRIPTION:
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** Atomically increment a 32 bit value.
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** INPUTS:
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** val: a pointer to the value to increment
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** RETURN:
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** the returned value has the same sign as the result
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*/
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PR_EXTERN(PRInt32) PR_AtomicIncrement(PRInt32 *val);
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/*
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** FUNCTION: PR_AtomicDecrement
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** DESCRIPTION:
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** Atomically decrement a 32 bit value.
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** INPUTS:
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** val: a pointer to the value to decrement
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** RETURN:
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** the returned value has the same sign as the result
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*/
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PR_EXTERN(PRInt32) PR_AtomicDecrement(PRInt32 *val);
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/*
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** FUNCTION: PR_AtomicSet
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** DESCRIPTION:
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** Atomically set a 32 bit value.
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** INPUTS:
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** val: A pointer to a 32 bit value to bet set
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** newval: The newvalue to assign to val
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** RETURN:
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** Returns the prior value
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*/
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PR_EXTERN(PRInt32) PR_AtomicSet(PRInt32 *val, PRInt32 newval);
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PR_END_EXTERN_C
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#endif /* pratom_h___ */
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