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149
openflow/usr/include/nspr/obsolete/probslet.h
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149
openflow/usr/include/nspr/obsolete/probslet.h
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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** A collection of things thought to be obsolete
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*/
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#if defined(PROBSLET_H)
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#else
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#define PROBSLET_H
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#include "prio.h"
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#include "private/pprio.h" /* for PROsfd */
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PR_BEGIN_EXTERN_C
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/*
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** Yield the current thread. The proper function to use in place of
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** PR_Yield() is PR_Sleep() with an argument of PR_INTERVAL_NO_WAIT.
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*/
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NSPR_API(PRStatus) PR_Yield(void);
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/************************************************************************/
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/************* The following definitions are for select *****************/
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/************************************************************************/
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/*
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** The following is obsolete and will be deleted in the next release!
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** These are provided for compatibility, but are GUARANTEED to be slow.
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**
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** Override PR_MAX_SELECT_DESC if you need more space in the select set.
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*/
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#ifndef PR_MAX_SELECT_DESC
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#define PR_MAX_SELECT_DESC 1024
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#endif
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typedef struct PR_fd_set {
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PRUint32 hsize;
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PRFileDesc *harray[PR_MAX_SELECT_DESC];
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PRUint32 nsize;
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PROsfd narray[PR_MAX_SELECT_DESC];
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} PR_fd_set;
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/*
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*************************************************************************
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** FUNCTION: PR_Select
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** DESCRIPTION:
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**
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** The call returns as soon as I/O is ready on one or more of the underlying
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** file/socket descriptors or an exceptional condition is pending. A count of the
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** number of ready descriptors is returned unless a timeout occurs in which case
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** zero is returned. On return, PR_Select replaces the given descriptor sets with
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** subsets consisting of those descriptors that are ready for the requested condition.
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** The total number of ready descriptors in all the sets is the return value.
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**
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** INPUTS:
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** PRInt32 num
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** This argument is unused but is provided for select(unix) interface
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** compatability. All input PR_fd_set arguments are self-describing
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** with its own maximum number of elements in the set.
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**
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** PR_fd_set *readfds
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** A set describing the io descriptors for which ready for reading
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** condition is of interest.
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**
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** PR_fd_set *writefds
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** A set describing the io descriptors for which ready for writing
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** condition is of interest.
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**
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** PR_fd_set *exceptfds
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** A set describing the io descriptors for which exception pending
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** condition is of interest.
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**
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** Any of the above readfds, writefds or exceptfds may be given as NULL
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** pointers if no descriptors are of interest for that particular condition.
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**
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** PRIntervalTime timeout
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** Amount of time the call will block waiting for I/O to become ready.
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** If this time expires without any I/O becoming ready, the result will
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** be zero.
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**
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** OUTPUTS:
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** PR_fd_set *readfds
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** A set describing the io descriptors which are ready for reading.
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**
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** PR_fd_set *writefds
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** A set describing the io descriptors which are ready for writing.
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**
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** PR_fd_set *exceptfds
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** A set describing the io descriptors which have pending exception.
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**
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** RETURN:PRInt32
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** Number of io descriptors with asked for conditions or zero if the function
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** timed out or -1 on failure. The reason for the failure is obtained by
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** calling PR_GetError().
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** XXX can we implement this on windoze and mac?
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**************************************************************************
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*/
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NSPR_API(PRInt32) PR_Select(
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PRInt32 num, PR_fd_set *readfds, PR_fd_set *writefds,
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PR_fd_set *exceptfds, PRIntervalTime timeout);
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/*
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** The following are not thread safe for two threads operating on them at the
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** same time.
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**
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** The following routines are provided for manipulating io descriptor sets.
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** PR_FD_ZERO(&fdset) initializes a descriptor set fdset to the null set.
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** PR_FD_SET(fd, &fdset) includes a particular file descriptor fd in fdset.
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** PR_FD_CLR(fd, &fdset) removes a file descriptor fd from fdset.
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** PR_FD_ISSET(fd, &fdset) is nonzero if file descriptor fd is a member of
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** fdset, zero otherwise.
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**
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** PR_FD_NSET(osfd, &fdset) includes a particular native file descriptor osfd
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** in fdset.
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** PR_FD_NCLR(osfd, &fdset) removes a native file descriptor osfd from fdset.
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** PR_FD_NISSET(osfd, &fdset) is nonzero if native file descriptor osfd is a member of
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** fdset, zero otherwise.
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*/
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NSPR_API(void) PR_FD_ZERO(PR_fd_set *set);
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NSPR_API(void) PR_FD_SET(PRFileDesc *fd, PR_fd_set *set);
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NSPR_API(void) PR_FD_CLR(PRFileDesc *fd, PR_fd_set *set);
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NSPR_API(PRInt32) PR_FD_ISSET(PRFileDesc *fd, PR_fd_set *set);
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NSPR_API(void) PR_FD_NSET(PROsfd osfd, PR_fd_set *set);
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NSPR_API(void) PR_FD_NCLR(PROsfd osfd, PR_fd_set *set);
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NSPR_API(PRInt32) PR_FD_NISSET(PROsfd osfd, PR_fd_set *set);
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/*
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** The next two entry points should not be in the API, but they are
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** declared here for historical reasons.
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*/
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NSPR_API(PRInt32) PR_GetSysfdTableMax(void);
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NSPR_API(PRInt32) PR_SetSysfdTableSize(PRIntn table_size);
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#ifndef NO_NSPR_10_SUPPORT
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#include <sys/stat.h>
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NSPR_API(PRInt32) PR_Stat(const char *path, struct stat *buf);
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#endif /* NO_NSPR_10_SUPPORT */
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PR_END_EXTERN_C
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#endif /* defined(PROBSLET_H) */
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/* probslet.h */
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