[Python-checkins] r67832 - in python/trunk: Misc/NEWS Modules/gcmodule.c
antoine.pitrou
python-checkins at python.org
Wed Dec 17 23:46:54 CET 2008
Author: antoine.pitrou
Date: Wed Dec 17 23:46:54 2008
New Revision: 67832
Log:
Issue #2467: gc.DEBUG_STATS reports invalid elapsed times.
Patch by Neil Schemenauer, very slightly modified.
Modified:
python/trunk/Misc/NEWS
python/trunk/Modules/gcmodule.c
Modified: python/trunk/Misc/NEWS
==============================================================================
--- python/trunk/Misc/NEWS (original)
+++ python/trunk/Misc/NEWS Wed Dec 17 23:46:54 2008
@@ -12,6 +12,10 @@
Core and Builtins
-----------------
+- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
+ print elapsed times, not only when some objects are uncollectable /
+ unreachable. Original patch by Neil Schemenauer.
+
- Issue #3439: Add a bit_length method to int and long.
- Issue #2183: Simplify and optimize bytecode for list comprehensions.
Modified: python/trunk/Modules/gcmodule.c
==============================================================================
--- python/trunk/Modules/gcmodule.c (original)
+++ python/trunk/Modules/gcmodule.c Wed Dec 17 23:46:54 2008
@@ -740,6 +740,24 @@
(void)PyFloat_ClearFreeList();
}
+static double
+get_time(void)
+{
+ double result = 0;
+ if (tmod != NULL) {
+ PyObject *f = PyObject_CallMethod(tmod, "time", NULL);
+ if (f == NULL) {
+ PyErr_Clear();
+ }
+ else {
+ if (PyFloat_Check(f))
+ result = PyFloat_AsDouble(f);
+ Py_DECREF(f);
+ }
+ }
+ return result;
+}
+
/* This is the main function. Read this to understand how the
* collection process works. */
static Py_ssize_t
@@ -762,16 +780,7 @@
}
if (debug & DEBUG_STATS) {
- if (tmod != NULL) {
- PyObject *f = PyObject_CallMethod(tmod, "time", NULL);
- if (f == NULL) {
- PyErr_Clear();
- }
- else {
- t1 = PyFloat_AsDouble(f);
- Py_DECREF(f);
- }
- }
+ t1 = get_time();
PySys_WriteStderr("gc: collecting generation %d...\n",
generation);
PySys_WriteStderr("gc: objects in each generation:");
@@ -844,17 +853,6 @@
if (debug & DEBUG_COLLECTABLE) {
debug_cycle("collectable", FROM_GC(gc));
}
- if (tmod != NULL && (debug & DEBUG_STATS)) {
- PyObject *f = PyObject_CallMethod(tmod, "time", NULL);
- if (f == NULL) {
- PyErr_Clear();
- }
- else {
- t1 = PyFloat_AsDouble(f)-t1;
- Py_DECREF(f);
- PySys_WriteStderr("gc: %.4fs elapsed.\n", t1);
- }
- }
}
/* Clear weakrefs and invoke callbacks as necessary. */
@@ -876,14 +874,19 @@
debug_cycle("uncollectable", FROM_GC(gc));
}
if (debug & DEBUG_STATS) {
+ double t2 = get_time();
if (m == 0 && n == 0)
- PySys_WriteStderr("gc: done.\n");
+ PySys_WriteStderr("gc: done");
else
PySys_WriteStderr(
"gc: done, "
"%" PY_FORMAT_SIZE_T "d unreachable, "
- "%" PY_FORMAT_SIZE_T "d uncollectable.\n",
+ "%" PY_FORMAT_SIZE_T "d uncollectable",
n+m, n);
+ if (t1 && t2) {
+ PySys_WriteStderr(", %.4fs elapsed", t2-t1);
+ }
+ PySys_WriteStderr(".\n");
}
/* Append instances in the uncollectable set to a Python
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