https://github.com/python/cpython/commit/e670a113b5e1fcc3ce3bb9b5b4b1f126264ae21b
commit: e670a113b5e1fcc3ce3bb9b5b4b1f126264ae21b
branch: main
author: Serhiy Storchaka <[email protected]>
committer: serhiy-storchaka <[email protected]>
date: 2024-09-24T08:26:25Z
summary:

gh-123978: Remove broken time.thread_time() on NetBSD (GH-124116)

files:
A Misc/NEWS.d/next/Library/2024-09-16-12-31-48.gh-issue-123978.z3smEu.rst
M Modules/timemodule.c

diff --git 
a/Misc/NEWS.d/next/Library/2024-09-16-12-31-48.gh-issue-123978.z3smEu.rst 
b/Misc/NEWS.d/next/Library/2024-09-16-12-31-48.gh-issue-123978.z3smEu.rst
new file mode 100644
index 00000000000000..e5b3229122b509
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-09-16-12-31-48.gh-issue-123978.z3smEu.rst
@@ -0,0 +1 @@
+Remove broken :func:`time.thread_time` and :func:`time.thread_time_ns` on 
NetBSD.
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 46f85bc9c30f9c..ee59fb73ac1e31 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -1288,9 +1288,14 @@ py_process_time(time_module_state *state, PyTime_t *tp,
 
     /* clock_gettime */
 // gh-115714: Don't use CLOCK_PROCESS_CPUTIME_ID on WASI.
+/* CLOCK_PROF is defined on NetBSD, but not supported.
+ * CLOCK_PROCESS_CPUTIME_ID is broken on NetBSD for the same reason as
+ * CLOCK_THREAD_CPUTIME_ID (see comment below).
+ */
 #if defined(HAVE_CLOCK_GETTIME) \
     && (defined(CLOCK_PROCESS_CPUTIME_ID) || defined(CLOCK_PROF)) \
-    && !defined(__wasi__)
+    && !defined(__wasi__) \
+    && !defined(__NetBSD__)
     struct timespec ts;
 
     if (HAVE_CLOCK_GETTIME_RUNTIME) {
@@ -1483,9 +1488,16 @@ _PyTime_GetThreadTimeWithInfo(PyTime_t *tp, 
_Py_clock_info_t *info)
     return 0;
 }
 
+/* CLOCK_THREAD_CPUTIME_ID is broken on NetBSD: the result of clock_gettime()
+ * includes the sleeping time, that defeats the purpose of the clock.
+ * Also, clock_getres() does not support it.
+ * https://github.com/python/cpython/issues/123978
+ * https://gnats.netbsd.org/57512
+ */
 #elif defined(HAVE_CLOCK_GETTIME) && \
-      defined(CLOCK_PROCESS_CPUTIME_ID) && \
-      !defined(__EMSCRIPTEN__) && !defined(__wasi__)
+      defined(CLOCK_THREAD_CPUTIME_ID) && \
+      !defined(__EMSCRIPTEN__) && !defined(__wasi__) && \
+      !defined(__NetBSD__)
 #define HAVE_THREAD_TIME
 
 #if defined(__APPLE__) && _Py__has_attribute(availability)

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