1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2/* 3 * The contents of this file are subject to the Mozilla Public 4 * License Version 1.1 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of 6 * the License at http://www.mozilla.org/MPL/ 7 * 8 * Software distributed under the License is distributed on an "AS 9 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 10 * implied. See the License for the specific language governing 11 * rights and limitations under the License. 12 * 13 * The Original Code is the Netscape Portable Runtime (NSPR). 14 * 15 * The Initial Developer of the Original Code is Netscape 16 * Communications Corporation. Portions created by Netscape are 17 * Copyright (C) 1998-2000 Netscape Communications Corporation. All 18 * Rights Reserved. 19 * 20 * Contributor(s): 21 * 22 * Alternatively, the contents of this file may be used under the 23 * terms of the GNU General Public License Version 2 or later (the 24 * "GPL"), in which case the provisions of the GPL are applicable 25 * instead of those above. If you wish to allow use of your 26 * version of this file only under the terms of the GPL and not to 27 * allow others to use your version of this file under the MPL, 28 * indicate your decision by deleting the provisions above and 29 * replace them with the notice and other provisions required by 30 * the GPL. If you do not delete the provisions above, a recipient 31 * may use your version of this file under either the MPL or the 32 * GPL. 33 */ 34 35/* 36** A collection of things thought to be obsolete 37*/ 38 39#if defined(PROBSLET_H) 40#else 41#define PROBSLET_H 42 43#include "prio.h" 44 45PR_BEGIN_EXTERN_C 46 47/* 48** Yield the current thread. The proper function to use in place of 49** PR_Yield() is PR_Sleep() with an argument of PR_INTERVAL_NO_WAIT. 50*/ 51NSPR_API(PRStatus) PR_Yield(void); 52 53/************************************************************************/ 54/************* The following definitions are for select *****************/ 55/************************************************************************/ 56 57/* 58** The following is obsolete and will be deleted in the next release! 59** These are provided for compatibility, but are GUARANTEED to be slow. 60** 61** Override PR_MAX_SELECT_DESC if you need more space in the select set. 62*/ 63#ifndef PR_MAX_SELECT_DESC 64#define PR_MAX_SELECT_DESC 1024 65#endif 66typedef struct PR_fd_set { 67 PRUint32 hsize; 68 PRFileDesc *harray[PR_MAX_SELECT_DESC]; 69 PRUint32 nsize; 70 PRInt32 narray[PR_MAX_SELECT_DESC]; 71} PR_fd_set; 72 73/* 74************************************************************************* 75** FUNCTION: PR_Select 76** DESCRIPTION: 77** 78** The call returns as soon as I/O is ready on one or more of the underlying 79** file/socket descriptors or an exceptional condition is pending. A count of the 80** number of ready descriptors is returned unless a timeout occurs in which case 81** zero is returned. On return, PR_Select replaces the given descriptor sets with 82** subsets consisting of those descriptors that are ready for the requested condition. 83** The total number of ready descriptors in all the sets is the return value. 84** 85** INPUTS: 86** PRInt32 num 87** This argument is unused but is provided for select(unix) interface 88** compatability. All input PR_fd_set arguments are self-describing 89** with its own maximum number of elements in the set. 90** 91** PR_fd_set *readfds 92** A set describing the io descriptors for which ready for reading 93** condition is of interest. 94** 95** PR_fd_set *writefds 96** A set describing the io descriptors for which ready for writing 97** condition is of interest. 98** 99** PR_fd_set *exceptfds 100** A set describing the io descriptors for which exception pending 101** condition is of interest. 102** 103** Any of the above readfds, writefds or exceptfds may be given as NULL 104** pointers if no descriptors are of interest for that particular condition. 105** 106** PRIntervalTime timeout 107** Amount of time the call will block waiting for I/O to become ready. 108** If this time expires without any I/O becoming ready, the result will 109** be zero. 110** 111** OUTPUTS: 112** PR_fd_set *readfds 113** A set describing the io descriptors which are ready for reading. 114** 115** PR_fd_set *writefds 116** A set describing the io descriptors which are ready for writing. 117** 118** PR_fd_set *exceptfds 119** A set describing the io descriptors which have pending exception. 120** 121** RETURN:PRInt32 122** Number of io descriptors with asked for conditions or zero if the function 123** timed out or -1 on failure. The reason for the failure is obtained by 124** calling PR_GetError(). 125** XXX can we implement this on windoze and mac? 126************************************************************************** 127*/ 128NSPR_API(PRInt32) PR_Select( 129 PRInt32 num, PR_fd_set *readfds, PR_fd_set *writefds, 130 PR_fd_set *exceptfds, PRIntervalTime timeout); 131 132/* 133** The following are not thread safe for two threads operating on them at the 134** same time. 135** 136** The following routines are provided for manipulating io descriptor sets. 137** PR_FD_ZERO(&fdset) initializes a descriptor set fdset to the null set. 138** PR_FD_SET(fd, &fdset) includes a particular file descriptor fd in fdset. 139** PR_FD_CLR(fd, &fdset) removes a file descriptor fd from fdset. 140** PR_FD_ISSET(fd, &fdset) is nonzero if file descriptor fd is a member of 141** fdset, zero otherwise. 142** 143** PR_FD_NSET(osfd, &fdset) includes a particular native file descriptor osfd 144** in fdset. 145** PR_FD_NCLR(osfd, &fdset) removes a native file descriptor osfd from fdset. 146** PR_FD_NISSET(osfd, &fdset) is nonzero if native file descriptor osfd is a member of 147** fdset, zero otherwise. 148*/ 149 150NSPR_API(void) PR_FD_ZERO(PR_fd_set *set); 151NSPR_API(void) PR_FD_SET(PRFileDesc *fd, PR_fd_set *set); 152NSPR_API(void) PR_FD_CLR(PRFileDesc *fd, PR_fd_set *set); 153NSPR_API(PRInt32) PR_FD_ISSET(PRFileDesc *fd, PR_fd_set *set); 154NSPR_API(void) PR_FD_NSET(PRInt32 osfd, PR_fd_set *set); 155NSPR_API(void) PR_FD_NCLR(PRInt32 osfd, PR_fd_set *set); 156NSPR_API(PRInt32) PR_FD_NISSET(PRInt32 osfd, PR_fd_set *set); 157 158#ifndef NO_NSPR_10_SUPPORT 159#ifdef XP_MAC 160#include <stat.h> 161#else 162#include <sys/stat.h> 163#endif 164 165NSPR_API(PRInt32) PR_Stat(const char *path, struct stat *buf); 166#endif /* NO_NSPR_10_SUPPORT */ 167 168PR_END_EXTERN_C 169 170#endif /* defined(PROBSLET_H) */ 171 172/* probslet.h */ 173