diff options
Diffstat (limited to 'xpa/man/man3/xpamainloop.3')
| -rw-r--r-- | xpa/man/man3/xpamainloop.3 | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/xpa/man/man3/xpamainloop.3 b/xpa/man/man3/xpamainloop.3 deleted file mode 100644 index ff01099..0000000 --- a/xpa/man/man3/xpamainloop.3 +++ /dev/null @@ -1,214 +0,0 @@ -.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.13) -.\" -.\" Standard preamble: -.\" ======================================================================== -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. \*(C+ will -.\" give a nicer C++. Capital omega is used to do unbreakable dashes and -.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, -.\" nothing in troff, for use with C<>. -.tr \(*W- -.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' -.ie n \{\ -. ds -- \(*W- -. ds PI pi -. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch -. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch -. ds L" "" -. ds R" "" -. ds C` "" -. ds C' "" -'br\} -.el\{\ -. ds -- \|\(em\| -. ds PI \(*p -. ds L" `` -. ds R" '' -'br\} -.\" -.\" Escape single quotes in literal strings from groff's Unicode transform. -.ie \n(.g .ds Aq \(aq -.el .ds Aq ' -.\" -.\" If the F register is turned on, we'll generate index entries on stderr for -.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index -.\" entries marked with X<> in POD. Of course, you'll have to process the -.\" output yourself in some meaningful fashion. -.ie \nF \{\ -. de IX -. tm Index:\\$1\t\\n%\t"\\$2" -.. -. nr % 0 -. rr F -.\} -.el \{\ -. de IX -.. -.\} -.\" -.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). -.\" Fear. Run. Save yourself. No user-serviceable parts. -. \" fudge factors for nroff and troff -.if n \{\ -. ds #H 0 -. ds #V .8m -. ds #F .3m -. ds #[ \f1 -. ds #] \fP -.\} -.if t \{\ -. ds #H ((1u-(\\\\n(.fu%2u))*.13m) -. ds #V .6m -. ds #F 0 -. ds #[ \& -. ds #] \& -.\} -. \" simple accents for nroff and troff -.if n \{\ -. ds ' \& -. ds ` \& -. ds ^ \& -. ds , \& -. ds ~ ~ -. ds / -.\} -.if t \{\ -. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" -. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' -. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' -. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' -. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' -. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' -.\} -. \" troff and (daisy-wheel) nroff accents -.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' -.ds 8 \h'\*(#H'\(*b\h'-\*(#H' -.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] -.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' -.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' -.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] -.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] -.ds ae a\h'-(\w'a'u*4/10)'e -.ds Ae A\h'-(\w'A'u*4/10)'E -. \" corrections for vroff -.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' -.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' -. \" for low resolution devices (crt and lpr) -.if \n(.H>23 .if \n(.V>19 \ -\{\ -. ds : e -. ds 8 ss -. ds o a -. ds d- d\h'-1'\(ga -. ds D- D\h'-1'\(hy -. ds th \o'bp' -. ds Th \o'LP' -. ds ae ae -. ds Ae AE -.\} -.rm #[ #] #H #V #F C -.\" ======================================================================== -.\" -.IX Title "xpamainloop 3" -.TH xpamainloop 3 "July 23, 2013" "version 2.1.15" "SAORD Documentation" -.\" For nroff, turn off justification. Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.if n .ad l -.nh -.SH "NAME" -\&\fBXPAMainLoop: optional main loop for \s-1XPA\s0\fR -.SH "SYNOPSIS" -.IX Header "SYNOPSIS" -.Vb 1 -\& #include <xpa.h> -\& -\& void XPAMainLoop(); -.Ve -.SH "DESCRIPTION" -.IX Header "DESCRIPTION" -Once \s-1XPA\s0 access points have been defined, a program must enter an -event loop to watch for requests from external programs. This can be -done in a variety of ways, depending on whether the event loop is -processing events other than \s-1XPA\s0 events. In cases where there are no -non-XPA events to be processed, the program can simply call the -\&\fIXPAMainLoop()\fR event loop. This loop is implemented essentially as -follows (error checking is simplified in this example): -.PP -.Vb 8 -\& FD_ZERO(&readfds); -\& while( XPAAddSelect(NULL, &readfds) ){ -\& if( sgot = select(swidth, &readfds, NULL, NULL, NULL) >0 ) -\& XPAProcessSelect(&readfds, 0); -\& else -\& break; -\& FD_ZERO(&readfds); -\& } -.Ve -.PP -The \fIXPAAddSelect()\fR routine sets up the \fIselect()\fR readfds variable so -that \fIselect()\fR will wait for I/O on all the active \s-1XPA\s0 channels. It -returns the number of XPAs that are active; the loop will end when -there are no active XPAs. The standard \fIselect()\fR routine is called to -wait for an external I/O request. Since no timeout struct is passed -in argument 5, the \fIselect()\fR call hangs until there is an external -request. When an external I/O request is made, the \fIXPAProcessSelect()\fR -routine is executed to process the pending requests. In this routine, -the maxreq value determines how many requests will be processed: if -maxreq <=0, then all currently pending requests will be processed. -Otherwise, up to maxreq requests will be processed. (The most usual -values for maxreq is 0 to process all requests.) -.PP -If a program has its own Unix \fIselect()\fR loop, then \s-1XPA\s0 access points can -be added to it by using a variation of the standard XPAMainLoop: -.PP -.Vb 7 -\& XPAAddSelect(xpa, &readfds); -\& [app\-specific ...] -\& if( select(width, &readfds, ...) ){ -\& XPAProcessSelect(&readfds, maxreq); -\& [app\-specific ...] -\& FD_ZERO(&readfds); -\& } -.Ve -.PP -\&\fIXPAAddSelect()\fR is called before \fIselect()\fR to add the access points. -If the first argument is \s-1NULL\s0, then all active \s-1XPA\s0 access points -are added. Otherwise only the specified access point is added. -After \fIselect()\fR is called, the \fIXPAProcessSelect()\fR routine can be called -to process \s-1XPA\s0 requests. Once again, the maxreq value determines how -many requests will be processed: if maxreq <=0, then all currently -pending requests will be processed. Otherwise, up to maxreq requests -will be processed. -.PP -\&\s-1XPA\s0 access points can be added to -Xt event loops (using \fIXtAppMainLoop()\fR) -and -Tcl/Tk event loops (using vwait and the Tk loop). -When using \s-1XPA\s0 with these event loops, you only need to call: -.PP -int XPAXtAddInput(XtAppContext app, \s-1XPA\s0 xpa) -.PP -or -.PP -.Vb 1 -\& int XPATclAddInput(XPA xpa) -.Ve -.PP -respectively before entering the loop. -.SH "SEE ALSO" -.IX Header "SEE ALSO" -See xpa(n) for a list of \s-1XPA\s0 help pages |