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annotate nspr/pr/include/prpdce.h @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 /* This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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5
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6 /*
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7 * File: prpdce.h
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8 * Description: This file is the API defined to allow for DCE (aka POSIX)
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9 * thread emulation in an NSPR environment. It is not the
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10 * intent that this be a fully supported API.
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11 */
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12
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13 #if !defined(PRPDCE_H)
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14 #define PRPDCE_H
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15
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16 #include "prlock.h"
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17 #include "prcvar.h"
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18 #include "prtypes.h"
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19 #include "prinrval.h"
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20
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21 PR_BEGIN_EXTERN_C
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22
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23 #define _PR_NAKED_CV_LOCK (PRLock*)0xdce1dce1
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24
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25 /*
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26 ** Test and acquire a lock.
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27 **
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28 ** If the lock is acquired by the calling thread, the
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29 ** return value will be PR_SUCCESS. If the lock is
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30 ** already held, by another thread or this thread, the
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31 ** result will be PR_FAILURE.
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32 */
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33 NSPR_API(PRStatus) PRP_TryLock(PRLock *lock);
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34
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35 /*
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36 ** Create a naked condition variable
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37 **
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38 ** A "naked" condition variable is one that is not created bound
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39 ** to a lock. The CV created with this function is the only type
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40 ** that may be used in the subsequent "naked" condition variable
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41 ** operations (see PRP_NakedWait, PRP_NakedNotify, PRP_NakedBroadcast);
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42 */
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43 NSPR_API(PRCondVar*) PRP_NewNakedCondVar(void);
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44
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45 /*
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46 ** Destroy a naked condition variable
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47 **
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48 ** Destroy the condition variable created by PR_NewNakedCondVar.
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49 */
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50 NSPR_API(void) PRP_DestroyNakedCondVar(PRCondVar *cvar);
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51
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52 /*
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53 ** Wait on a condition
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54 **
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55 ** Wait on the condition variable 'cvar'. It is asserted that
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56 ** the lock protecting the condition 'lock' is held by the
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57 ** calling thread. If more time expires than that declared in
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58 ** 'timeout' the condition will be notified. Waits can be
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59 ** interrupted by another thread.
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60 **
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61 ** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
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62 */
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63 NSPR_API(PRStatus) PRP_NakedWait(
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64 PRCondVar *cvar, PRLock *lock, PRIntervalTime timeout);
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65
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66 /*
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67 ** Notify a thread waiting on a condition
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68 **
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69 ** Notify the condition specified 'cvar'.
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70 **
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71 ** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
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72 */
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73 NSPR_API(PRStatus) PRP_NakedNotify(PRCondVar *cvar);
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74
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75 /*
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76 ** Notify all threads waiting on a condition
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77 **
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78 ** Notify the condition specified 'cvar'.
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79 **
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80 ** NB: The CV ('cvar') must be one created using PR_NewNakedCondVar.
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81 */
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82 NSPR_API(PRStatus) PRP_NakedBroadcast(PRCondVar *cvar);
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83
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84 PR_END_EXTERN_C
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85
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86 #endif /* PRPDCE_H */
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