Tcl_SetRecursionLimit(3) Tcl (7.0) Tcl_SetRecursionLimit(3)
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NAME
Tcl_SetRecursionLimit - set maximum allowable nesting depth
in interpreter
SYNOPSIS
#include <tcl.h>
int
Tcl_SetRecursionLimit(interp, depth)
ARGUMENTS
Tcl_Interp *interp (in) Interpreter whose recursion
limit is to be set. Must
be greater than zero.
int depth (in) New limit for nested calls
to Tcl_Eval for interp.
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DESCRIPTION
At any given time Tcl enforces a limit on the number of
recursive calls that may be active for Tcl_Eval and related
procedures such as Tcl_GlobalEval. Any call to Tcl_Eval
that exceeds this depth is aborted with an error. By
default the recursion limit is 1000.
Tcl_SetRecursionLimit may be used to change the maximum
allowable nesting depth for an interpreter. The depth
argument specifies a new limit for interp, and
Tcl_SetRecursionLimit returns the old limit. To read out
the old limit without modifying it, invoke
Tcl_SetRecursionDepth with depth equal to 0.
The Tcl_SetRecursionLimit 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
Tcl_SetRecursionLimit. If this happens, see if there is a
mechanism in your system for increasing the maximum size of
the C stack.
KEYWORDS
nesting depth, recursion
Page 1 (printed 2/19/99)
