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-rw-r--r--Python/sysmodule.c54
1 files changed, 51 insertions, 3 deletions
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index d500a36..31d7abf 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -199,6 +199,45 @@ static char setcheckinterval_doc[] =
Tell the Python interpreter to check for asynchronous events every\n\
n instructions. This also affects how often thread switches occur.";
+static PyObject *
+sys_setrecursionlimit(PyObject *self, PyObject *args)
+{
+ int new_limit;
+ if (!PyArg_ParseTuple(args, "i:setrecursionlimit", &new_limit))
+ return NULL;
+ if (new_limit <= 0) {
+ PyErr_SetString(PyExc_ValueError,
+ "recursion limit must be positive");
+ return NULL;
+ }
+ Py_SetRecursionLimit(new_limit);
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static char setrecursionlimit_doc[] =
+"setrecursionlimit(n)\n\
+\n\
+Set the maximum depth of the Python interpreter stack to n. This\n\
+limit prevents infinite recursion from causing an overflow of the C\n\
+stack and crashing Python. The highest possible limit is platform-\n\
+dependent.";
+
+static PyObject *
+sys_getrecursionlimit(PyObject *self, PyObject *args)
+{
+ if (!PyArg_ParseTuple(args, ":getrecursionlimit"))
+ return NULL;
+ return PyInt_FromLong(Py_GetRecursionLimit());
+}
+
+static char getrecursionlimit_doc[] =
+"getrecursionlimit()\n\
+\n\
+Return the current value of the recursion limit, the maximum depth\n\
+of the Python interpreter stack. This limit prevents infinite\n\
+recursion from causing an overflow of the C stack and crashing Python.";
+
#ifdef USE_MALLOPT
/* Link with -lmalloc (or -lmpc) on an SGI */
#include <malloc.h>
@@ -268,7 +307,8 @@ static PyMethodDef sys_methods[] = {
/* Might as well keep this in alphabetic order */
{"exc_info", sys_exc_info, 1, exc_info_doc},
{"exit", sys_exit, 0, exit_doc},
- {"getdefaultencoding", sys_getdefaultencoding, 1, getdefaultencoding_doc},
+ {"getdefaultencoding", sys_getdefaultencoding, 1,
+ getdefaultencoding_doc},
#ifdef COUNT_ALLOCS
{"getcounts", sys_getcounts, 1},
#endif
@@ -280,12 +320,18 @@ static PyMethodDef sys_methods[] = {
{"gettotalrefcount", sys_gettotalrefcount, 1},
#endif
{"getrefcount", sys_getrefcount, 1, getrefcount_doc},
+ {"getrecursionlimit", sys_getrecursionlimit, 1,
+ getrecursionlimit_doc},
#ifdef USE_MALLOPT
{"mdebug", sys_mdebug, 1},
#endif
- {"setdefaultencoding", sys_setdefaultencoding, 1, setdefaultencoding_doc},
- {"setcheckinterval", sys_setcheckinterval, 1, setcheckinterval_doc},
+ {"setdefaultencoding", sys_setdefaultencoding, 1,
+ setdefaultencoding_doc},
+ {"setcheckinterval", sys_setcheckinterval, 1,
+ setcheckinterval_doc},
{"setprofile", sys_setprofile, 0, setprofile_doc},
+ {"setrecursionlimit", sys_setrecursionlimit, 1,
+ setrecursionlimit_doc},
{"settrace", sys_settrace, 0, settrace_doc},
{NULL, NULL} /* sentinel */
};
@@ -376,8 +422,10 @@ Functions:\n\
exc_info() -- return thread-safe information about the current exception\n\
exit() -- exit the interpreter by raising SystemExit\n\
getrefcount() -- return the reference count for an object (plus one :-)\n\
+getrecursionlimit() -- return the max recursion depth for the interpreter\n\
setcheckinterval() -- control how often the interpreter checks for events\n\
setprofile() -- set the global profiling function\n\
+setrecursionlimit() -- set the max recursion depth for the interpreter\n\
settrace() -- set the global debug tracing function\n\
"
#endif