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diff --git a/man/man3/setjmp.html b/man/man3/setjmp.html new file mode 100644 index 00000000..b22431fd --- /dev/null +++ b/man/man3/setjmp.html @@ -0,0 +1,110 @@ +<head> +<title>setjmp(3) - Plan 9 from User Space</title> +<meta content="text/html; charset=utf-8" http-equiv=Content-Type> +</head> +<body bgcolor=#ffffff> +<table border=0 cellpadding=0 cellspacing=0 width=100%> +<tr height=10><td> +<tr><td width=20><td> +<tr><td width=20><td><b>SETJMP(3)</b><td align=right><b>SETJMP(3)</b> +<tr><td width=20><td colspan=2> + <br> +<p><font size=+1><b>NAME </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + setjmp, longjmp, notejmp – non-local goto<br> + +</table> +<p><font size=+1><b>SYNOPSIS </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <tt><font size=+1>#include <u.h><br> + #include <libc.h> + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + </font></tt> + <tt><font size=+1>int setjmp(jmp_buf env) + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + </font></tt> + <tt><font size=+1>void longjmp(jmp_buf env, int val) + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + </font></tt> + <tt><font size=+1>void notejmp(void *uregs, jmp_buf env, int val)<br> + </font></tt> +</table> +<p><font size=+1><b>DESCRIPTION </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + These routines are useful for dealing with errors and interrupts + encountered in a low-level subroutine of a program. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <i>Setjmp</i> saves its stack environment in <i>env</i> for later use by <i>longjmp</i>. + It returns value 0. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <i>Longjmp</i> restores the environment saved by the last call of <i>setjmp</i>. + It then causes execution to continue as if the call of <i>setjmp</i> + had just returned with value <i>val</i>. The invoker of <i>setjmp</i> must not + itself have returned in the interim. All accessible data have + values as of the time <i>longjmp</i> was called. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <i>Notejmp</i> is the same as <i>longjmp</i> except that it is to be called + from within a note handler (see <a href="../man3/notify.html"><i>notify</i>(3)</a>). The <i>uregs</i> argument + should be the first argument passed to the note handler. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <i>Setjmp</i> and <i>longjmp</i> can also be used to switch stacks.<br> + +</table> +<p><font size=+1><b>SOURCE </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <tt><font size=+1>/usr/local/plan9/src/lib9/jmp.c<br> + </font></tt> +</table> +<p><font size=+1><b>SEE ALSO </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <a href="../man3/notify.html"><i>notify</i>(3)</a><br> + +</table> +<p><font size=+1><b>BUGS </b></font><br> + +<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + +<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> + + <i>Notejmp</i> cannot recover from an address trap or bus error (page + fault) on the 680x0 architectures. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + To avoid name conflicts with the underlying system, <i>setjmp</i>, <i>longjmp</i>, + <i>notejmp</i>, and <i>jmp_buf</i> are preprocessor macros defined as <i>p9setjmp</i>, + <i>p9longjmp</i>, <i>p9notejmp</i>, and <i>p9jmp_buf</i>; see <a href="../man3/intro.html"><i>intro</i>(3)</a>. + <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> + + <i>P9setjmp</i> is implemented as a preprocessor macro that calls <i>sigsetjmp</i> + (see Unix’s <i>setjmp</i>(3)).<br> + +</table> + +<td width=20> +<tr height=20><td> +</table> +<!-- TRAILER --> +<table border=0 cellpadding=0 cellspacing=0 width=100%> +<tr height=15><td width=10><td><td width=10> +<tr><td><td> +<center> +<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> +</center> +</table> +<!-- TRAILER --> +</body></html> |