FazBrowse GitHub Viewer | Trending |
URL:
| Home
Tools: [Download Repo ZIP]   [Original HTTPS Page]

GH-122298: Restore printing of GC stats by markshannon · Pull Request #123261 · python/cpython · GitHub

/ cpython Public

GH-122298: Restore printing of GC stats #123261

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
markshannon merged 2 commits into from
Aug 23, 2024
Conversation 2 Commits 2 Checks 0 Files changed
Merged

GH-122298: Restore printing of GC stats #123261

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
037d529
Add collection counts to Py_STATS and add back GC debug printout from…
markshannon Aug 23, 2024
c983f31
Add news
markshannon Aug 23, 2024
File filter

Filter by extension

Filter by extension .c  (1) .rst  (1) All 2 file types selected
Viewed files
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Unified
Split
Hide whitespace
Diff view
Unified
Split
Hide whitespace
3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2024-08-23-11-26-54.gh-issue-122298.ZMyln4.rst
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Restore printout of GC stats when ``gc.set_debug(gc.DEBUG_STATS)`` is
called. This featue was accidentally removed when implementing incremental
GC.
25 changes: 25 additions & 0 deletions Python/gc.c
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -1300,6 +1300,7 @@ gc_collect_young(PyThreadState *tstate,
GCState *gcstate = &tstate->interp->gc;
PyGC_Head *young = &gcstate->young.head;
PyGC_Head *visited = &gcstate->old[gcstate->visited_space].head;
GC_STAT_ADD(0, collections, 1);
#ifdef Py_STATS
{
Py_ssize_t count = 0;
Expand Down Expand Up @@ -1428,6 +1429,7 @@ completed_cycle(GCState *gcstate)
static void
gc_collect_increment(PyThreadState *tstate, struct gc_collection_stats *stats)
{
GC_STAT_ADD(1, collections, 1);
GCState *gcstate = &tstate->interp->gc;
PyGC_Head *not_visited = &gcstate->old[gcstate->visited_space^1].head;
PyGC_Head *visited = &gcstate->old[gcstate->visited_space].head;
Expand Down Expand Up @@ -1473,6 +1475,7 @@ static void
gc_collect_full(PyThreadState *tstate,
struct gc_collection_stats *stats)
{
GC_STAT_ADD(2, collections, 1);
GCState *gcstate = &tstate->interp->gc;
validate_old(gcstate);
PyGC_Head *young = &gcstate->young.head;
Expand Down Expand Up @@ -1795,6 +1798,24 @@ PyGC_IsEnabled(void)
return gcstate->enabled;
}

// Show stats for objects in each generations
static void
show_stats_each_generations(GCState *gcstate)
{
char buf[100];
size_t pos = 0;

for (int i = 0; i < NUM_GENERATIONS && pos < sizeof(buf); i++) {
pos += PyOS_snprintf(buf+pos, sizeof(buf)-pos,
" %zd",
gc_list_size(GEN_HEAD(gcstate, i)));
}
PySys_FormatStderr(
"gc: objects in each generation:%s\n"
"gc: objects in permanent generation: %zd\n",
buf, gc_list_size(&gcstate->permanent_generation.head));
}

Py_ssize_t
_PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason)
{
Expand All @@ -1810,6 +1831,10 @@ _PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason)
if (reason != _Py_GC_REASON_SHUTDOWN) {
invoke_gc_callback(gcstate, "start", generation, &stats);
}
if (gcstate->debug & _PyGC_DEBUG_STATS) {
PySys_WriteStderr("gc: collecting generation %d...\n", generation);
show_stats_each_generations(gcstate);
}
if (PyDTrace_GC_START_ENABLED()) {
PyDTrace_GC_START(generation);
}
Expand Down
Back | FazBrowse Home | New Git URL