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1.1 root 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58: ** The following is obsolete and will be deleted in the next release!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 */
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