/usr/include/nspr/prpdce.h is in libnspr4-dev 2:4.9.2-1+deb7u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* File: prpdce.h
* Description: This file is the API defined to allow for DCE (aka POSIX)
* thread emulation in an NSPR environment. It is not the
* intent that this be a fully supported API.
*/
#if !defined(PRPDCE_H)
#define PRPDCE_H
#include "prlock.h"
#include "prcvar.h"
#include "prtypes.h"
#include "prinrval.h"
PR_BEGIN_EXTERN_C
#define _PR_NAKED_CV_LOCK (PRLock*)0xdce1dce1
/*
** Test and acquire a lock.
**
** If the lock is acquired by the calling thread, the
** return value will be PR_SUCCESS. If the lock is
** already held, by another thread or this thread, the
** result will be PR_FAILURE.
*/
NSPR_API(PRStatus) PRP_TryLock(PRLock *lock);
/*
** Create a naked condition variable
**
** A "naked" condition variable is one that is not created bound
** to a lock. The CV created with this function is the only type
** that may be used in the subsequent "naked" condition variable
** operations (see PRP_NakedWait, PRP_NakedNotify, PRP_NakedBroadcast);
*/
NSPR_API(PRCondVar*) PRP_NewNakedCondVar(void);
/*
** Destroy a naked condition variable
**
** Destroy the condition variable created by PR_NewNakedCondVar.
*/
NSPR_API(void) PRP_DestroyNakedCondVar(PRCondVar *cvar);
/*
** Wait on a condition
**
** Wait on the condition variable 'cvar'. It is asserted that
** the lock protecting the condition 'lock' is held by the
** calling thread. If more time expires than that declared in
** 'timeout' the condition will be notified. Waits can be
** interrupted by another thread.
**
** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
*/
NSPR_API(PRStatus) PRP_NakedWait(
PRCondVar *cvar, PRLock *lock, PRIntervalTime timeout);
/*
** Notify a thread waiting on a condition
**
** Notify the condition specified 'cvar'.
**
** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
*/
NSPR_API(PRStatus) PRP_NakedNotify(PRCondVar *cvar);
/*
** Notify all threads waiting on a condition
**
** Notify the condition specified 'cvar'.
**
** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
*/
NSPR_API(PRStatus) PRP_NakedBroadcast(PRCondVar *cvar);
PR_END_EXTERN_C
#endif /* PRPDCE_H */
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