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author | rjohnson <rjohnson> | 1998-03-26 14:45:59 (GMT) |
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committer | rjohnson <rjohnson> | 1998-03-26 14:45:59 (GMT) |
commit | 2b5738da524e944cda39e24c0a87b745a43bd8c3 (patch) | |
tree | 6e8c9473978f6dab66c601e911721a7bd9d70b1b /doc/SetRecLmt.3 | |
parent | c6a259aeeca4814a97cf6694814c63e74e4e18fa (diff) | |
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diff --git a/doc/SetRecLmt.3 b/doc/SetRecLmt.3 new file mode 100644 index 0000000..3a07481 --- /dev/null +++ b/doc/SetRecLmt.3 @@ -0,0 +1,55 @@ +'\" +'\" Copyright (c) 1989-1993 The Regents of the University of California. +'\" Copyright (c) 1994-1996 Sun Microsystems, Inc. +'\" +'\" See the file "license.terms" for information on usage and redistribution +'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. +'\" +'\" SCCS: @(#) SetRecLmt.3 1.6 96/03/25 20:06:36 +'\" +.so man.macros +.TH Tcl_SetRecursionLimit 3 7.0 Tcl "Tcl Library Procedures" +.BS +.SH NAME +Tcl_SetRecursionLimit \- set maximum allowable nesting depth in interpreter +.SH SYNOPSIS +.nf +\fB#include <tcl.h>\fR +.sp +int +\fBTcl_SetRecursionLimit\fR(\fIinterp, depth\fR) +.SH ARGUMENTS +.AS Tcl_Interp *interp +.AP Tcl_Interp *interp in +Interpreter whose recursion limit is to be set. +Must be greater than zero. +.AP int depth in +New limit for nested calls to \fBTcl_Eval\fR for \fIinterp\fR. +.BE + +.SH DESCRIPTION +.PP +At any given time Tcl enforces a limit on the number of recursive +calls that may be active for \fBTcl_Eval\fR and related procedures +such as \fBTcl_GlobalEval\fR. +Any call to \fBTcl_Eval\fR that exceeds this depth is aborted with +an error. +By default the recursion limit is 1000. +.PP +\fBTcl_SetRecursionLimit\fR may be used to change the maximum +allowable nesting depth for an interpreter. +The \fIdepth\fR argument specifies a new limit for \fIinterp\fR, +and \fBTcl_SetRecursionLimit\fR returns the old limit. +To read out the old limit without modifying it, invoke +\fBTcl_SetRecursionDepth\fR with \fIdepth\fR equal to 0. +.PP +The \fBTcl_SetRecursionLimit\fR only sets the size of the Tcl +call stack: it cannot by itself prevent stack overflows on the +C stack being used by the application. If your machine has a +limit on the size of the C stack, you may get stack overflows +before reaching the limit set by \fBTcl_SetRecursionLimit\fR. +If this happens, see if there is a mechanism in your system for +increasing the maximum size of the C stack. + +.SH KEYWORDS +nesting depth, recursion |