84     Py_ssize_t maxlen;          /* maxlen is -1 for unbounded deques */  member
172     deque->maxlen = -1;  in deque_new()
253 /* The deque's size limit is d.maxlen.  The limit can be zero or positive.
254  * If there is no limit, then d.maxlen == -1.
262  * unsigned test that returns true whenever 0 <= maxlen < Py_SIZE(deque).
265 #define NEEDS_TRIM(deque, maxlen) ((size_t)(maxlen) < (size_t)(Py_SIZE(deque)))  argument
268 deque_append_internal(dequeobject *deque, PyObject *item, Py_ssize_t maxlen)  in deque_append_internal()  argument
284     if (NEEDS_TRIM(deque, maxlen)) {  in deque_append_internal()
297     if (deque_append_internal(deque, item, deque->maxlen) < 0)  in deque_append()
305 deque_appendleft_internal(dequeobject *deque, PyObject *item, Py_ssize_t maxlen)  in deque_appendleft_internal()  argument
321     if (NEEDS_TRIM(deque, deque->maxlen)) {  in deque_appendleft_internal()
334     if (deque_appendleft_internal(deque, item, deque->maxlen) < 0)  in deque_appendleft()
357    the extend/extendleft methods when maxlen == 0. */
376     Py_ssize_t maxlen = deque->maxlen;  in deque_extend()  local
393     if (maxlen == 0)  in deque_extend()
423         if (NEEDS_TRIM(deque, maxlen)) {  in deque_extend()
441     Py_ssize_t maxlen = deque->maxlen;  in deque_extendleft()  local
458     if (maxlen == 0)  in deque_extendleft()
488         if (NEEDS_TRIM(deque, maxlen)) {  in deque_extendleft()
526         new_deque->maxlen = old_deque->maxlen;  in deque_copy()
541     if (old_deque->maxlen < 0)  in deque_copy()
546                                        deque, old_deque->maxlen, NULL);  in deque_copy()
703         if (deque->maxlen >= 0 && n > deque->maxlen)  in deque_inplace_repeat()
704             n = deque->maxlen;  in deque_inplace_repeat()
744     /* Reduce the number of repetitions when maxlen would be exceeded */  in deque_inplace_repeat()
745     if (deque->maxlen >= 0 && n * size > deque->maxlen)  in deque_inplace_repeat()
746         n = (deque->maxlen + size - 1) / size;  in deque_inplace_repeat()
1146     if (deque->maxlen == Py_SIZE(deque)) {  in deque_insert()
1366     if (deque->maxlen < 0) {  in deque_reduce()
1370         return Py_BuildValue("O(()n)NN", Py_TYPE(deque), deque->maxlen, dict, it);  in deque_reduce()
1394     if (((dequeobject *)deque)->maxlen >= 0)  in deque_repr()
1395         result = PyUnicode_FromFormat("%s(%R, maxlen=%zd)",  in deque_repr()
1397                                       ((dequeobject *)deque)->maxlen);  in deque_repr()
1489     Py_ssize_t maxlen = -1;  in deque_init()  local
1490     char *kwlist[] = {"iterable", "maxlen", 0};  in deque_init()
1501         maxlen = PyLong_AsSsize_t(maxlenobj);  in deque_init()
1502         if (maxlen == -1 && PyErr_Occurred())  in deque_init()
1504         if (maxlen < 0) {  in deque_init()
1505             PyErr_SetString(PyExc_ValueError, "maxlen must be non-negative");  in deque_init()
1509     deque->maxlen = maxlen;  in deque_init()
1547     if (deque->maxlen < 0)  in deque_get_maxlen()
1549     return PyLong_FromSsize_t(deque->maxlen);  in deque_get_maxlen()
1556     {"maxlen", (getter)deque_get_maxlen, (setter)NULL,
1634 "deque([iterable[, maxlen]]) --> deque object\n\