Tcl_SetRecursionLimit()

set maximum allowable nesting depth in interpreter 

Tcl Library Procedures


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.


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_SetRecursionLimit() 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.


PORTABILITY

Windows Server 2012. Windows 8.1. Windows Server 2012 R2. Windows 10. Windows Server 2016. Windows Server 2019.


AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition


PTC MKS Toolkit 10.3 Documentation Build 39.