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15 * The Original Code is the Netscape Portable Runtime (NSPR).
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39 ** A collection of things thought to be obsolete
42 #if defined(PROBSLET_H)
47 #include "private/pprio.h" /* for PROsfd */
52 ** Yield the current thread. The proper function to use in place of
53 ** PR_Yield() is PR_Sleep() with an argument of PR_INTERVAL_NO_WAIT.
55 NSPR_API(PRStatus) PR_Yield(void);
57 /************************************************************************/
58 /************* The following definitions are for select *****************/
59 /************************************************************************/
62 ** The following is obsolete and will be deleted in the next release!
63 ** These are provided for compatibility, but are GUARANTEED to be slow.
65 ** Override PR_MAX_SELECT_DESC if you need more space in the select set.
67 #ifndef PR_MAX_SELECT_DESC
68 #define PR_MAX_SELECT_DESC 1024
70 typedef struct PR_fd_set {
72 PRFileDesc *harray[PR_MAX_SELECT_DESC];
74 PROsfd narray[PR_MAX_SELECT_DESC];
78 *************************************************************************
79 ** FUNCTION: PR_Select
82 ** The call returns as soon as I/O is ready on one or more of the underlying
83 ** file/socket descriptors or an exceptional condition is pending. A count of the
84 ** number of ready descriptors is returned unless a timeout occurs in which case
85 ** zero is returned. On return, PR_Select replaces the given descriptor sets with
86 ** subsets consisting of those descriptors that are ready for the requested condition.
87 ** The total number of ready descriptors in all the sets is the return value.
91 ** This argument is unused but is provided for select(unix) interface
92 ** compatability. All input PR_fd_set arguments are self-describing
93 ** with its own maximum number of elements in the set.
96 ** A set describing the io descriptors for which ready for reading
97 ** condition is of interest.
99 ** PR_fd_set *writefds
100 ** A set describing the io descriptors for which ready for writing
101 ** condition is of interest.
103 ** PR_fd_set *exceptfds
104 ** A set describing the io descriptors for which exception pending
105 ** condition is of interest.
107 ** Any of the above readfds, writefds or exceptfds may be given as NULL
108 ** pointers if no descriptors are of interest for that particular condition.
110 ** PRIntervalTime timeout
111 ** Amount of time the call will block waiting for I/O to become ready.
112 ** If this time expires without any I/O becoming ready, the result will
116 ** PR_fd_set *readfds
117 ** A set describing the io descriptors which are ready for reading.
119 ** PR_fd_set *writefds
120 ** A set describing the io descriptors which are ready for writing.
122 ** PR_fd_set *exceptfds
123 ** A set describing the io descriptors which have pending exception.
126 ** Number of io descriptors with asked for conditions or zero if the function
127 ** timed out or -1 on failure. The reason for the failure is obtained by
128 ** calling PR_GetError().
129 ** XXX can we implement this on windoze and mac?
130 **************************************************************************
132 NSPR_API(PRInt32) PR_Select(
133 PRInt32 num, PR_fd_set *readfds, PR_fd_set *writefds,
134 PR_fd_set *exceptfds, PRIntervalTime timeout);
137 ** The following are not thread safe for two threads operating on them at the
140 ** The following routines are provided for manipulating io descriptor sets.
141 ** PR_FD_ZERO(&fdset) initializes a descriptor set fdset to the null set.
142 ** PR_FD_SET(fd, &fdset) includes a particular file descriptor fd in fdset.
143 ** PR_FD_CLR(fd, &fdset) removes a file descriptor fd from fdset.
144 ** PR_FD_ISSET(fd, &fdset) is nonzero if file descriptor fd is a member of
145 ** fdset, zero otherwise.
147 ** PR_FD_NSET(osfd, &fdset) includes a particular native file descriptor osfd
149 ** PR_FD_NCLR(osfd, &fdset) removes a native file descriptor osfd from fdset.
150 ** PR_FD_NISSET(osfd, &fdset) is nonzero if native file descriptor osfd is a member of
151 ** fdset, zero otherwise.
154 NSPR_API(void) PR_FD_ZERO(PR_fd_set *set);
155 NSPR_API(void) PR_FD_SET(PRFileDesc *fd, PR_fd_set *set);
156 NSPR_API(void) PR_FD_CLR(PRFileDesc *fd, PR_fd_set *set);
157 NSPR_API(PRInt32) PR_FD_ISSET(PRFileDesc *fd, PR_fd_set *set);
158 NSPR_API(void) PR_FD_NSET(PROsfd osfd, PR_fd_set *set);
159 NSPR_API(void) PR_FD_NCLR(PROsfd osfd, PR_fd_set *set);
160 NSPR_API(PRInt32) PR_FD_NISSET(PROsfd osfd, PR_fd_set *set);
163 ** The next two entry points should not be in the API, but they are
164 ** declared here for historical reasons.
167 NSPR_API(PRInt32) PR_GetSysfdTableMax(void);
169 NSPR_API(PRInt32) PR_SetSysfdTableSize(PRIntn table_size);
171 #ifndef NO_NSPR_10_SUPPORT
172 #include <sys/stat.h>
174 NSPR_API(PRInt32) PR_Stat(const char *path, struct stat *buf);
175 #endif /* NO_NSPR_10_SUPPORT */
179 #endif /* defined(PROBSLET_H) */