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 45 PR_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 */ 51 NSPR_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55 /************************************************************************/ 56 57 /* 58 ** The following is obsolete and will be deleted in the next release! 59 ** These are provided for compatibility, but are GUARANTEED to be slow. 60 ** 61 ** Override PR_MAX_SELECT_DESC if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 66 typedef 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 */ 128 NSPR_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 */ 149 150 NSPR_API(void) PR_FD_ZERO(PR_fd_set *set); 151 NSPR_API(void) PR_FD_SET(PRFileDesc *fd, PR_fd_set *set); 152 NSPR_API(void) PR_FD_CLR(PRFileDesc *fd, PR_fd_set *set); 153 NSPR_API(PRInt32) PR_FD_ISSET(PRFileDesc *fd, PR_fd_set *set); 154 NSPR_API(void) PR_FD_NSET(PRInt32 osfd, PR_fd_set *set); 155 NSPR_API(void) PR_FD_NCLR(PRInt32 osfd, PR_fd_set *set); 156 NSPR_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 164 165 NSPR_API(PRInt32) PR_Stat(const char *path, struct stat *buf); 166 #endif /* NO_NSPR_10_SUPPORT */ 167 168 PR_END_EXTERN_C 169 170 #endif /* defined(PROBSLET_H) */ 171 172 /* probslet.h */ 173
