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replace thread state objects' ticker and checkinterval fields with two

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globals, _Py_Ticker and _Py_CheckInterval.  This also implements Jeremy's
shortcut in Py_AddPendingCall that zeroes out _Py_Ticker.  This allows the
test in the main loop to only test a single value.

The gory details are at

    http://python.org/sf/602191
This commit is contained in:
Skip Montanaro 2002-09-03 20:10:45 +00:00
parent d229b3ae04
commit d581d7792b
5 changed files with 15 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

10
Python/ceval.c
View file

@ -395,6 +395,8 @@ Py_AddPendingCall(int (*func)(void *), void *arg)
pendingcalls[i].func = func;
pendingcalls[i].arg = arg;
pendinglast = j;
_Py_Ticker = 0;
things_to_do = 1; /* Signal main loop */
busy = 0;
/* XXX End critical section */
@ -465,6 +467,10 @@ enum why_code {
static enum why_code do_raise(PyObject *, PyObject *, PyObject *);
static int unpack_iterable(PyObject *, int, PyObject **);
/* for manipulating the thread switch and periodic "stuff" - used to be
per thread, now just a pair o' globals */
int _Py_CheckInterval = 10;
volatile int _Py_Ticker = 10;
PyObject *
PyEval_EvalCode(PyCodeObject *co, PyObject *globals, PyObject *locals)
@ -669,8 +675,8 @@ eval_frame(PyFrameObject *f)
async I/O handler); see Py_AddPendingCall() and
Py_MakePendingCalls() above. */
if (things_to_do || --tstate->ticker < 0) {
tstate->ticker = tstate->interp->checkinterval;
if (--_Py_Ticker < 0) {
_Py_Ticker = _Py_CheckInterval;
if (things_to_do) {
if (Py_MakePendingCalls() < 0) {
why = WHY_EXCEPTION;

3
Python/sysmodule.c
View file

@ -352,8 +352,7 @@ and return. See the profiler chapter in the library manual."
static PyObject *
sys_setcheckinterval(PyObject *self, PyObject *args)
{
PyThreadState *tstate = PyThreadState_Get();
if (!PyArg_ParseTuple(args, "i:setcheckinterval", &tstate->interp->checkinterval))
if (!PyArg_ParseTuple(args, "i:setcheckinterval", &_Py_CheckInterval))
return NULL;
Py_INCREF(Py_None);
return Py_None;