From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Date: Mon, 20 Jul 2026 20:20:57 +0000 (+0200) Subject: [3.15] gh-154283: Make threading.get_native_id() unique across processes on DragonFly... X-Git-Url: http://git.ipfire.org/index.cgi?a=commitdiff_plain;h=387f7cd81d285ca9ed9a95b2376a2290a3241f20;p=thirdparty%2FPython%2Fcpython.git [3.15] gh-154283: Make threading.get_native_id() unique across processes on DragonFly (GH-154287) (GH-154293) On DragonFly BSD lwp_gettid() is only unique within a process (the main thread is always LWP 1), so combine it with the process id, like Solaris. (cherry picked from commit 53597df11e2d9f01ade2529c147df24b49685878) Co-authored-by: Serhiy Storchaka Co-authored-by: Claude Opus 4.8 (1M context) --- diff --git a/Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst b/Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst new file mode 100644 index 000000000000..a278d67e1824 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2026-07-20-21-36-40.gh-issue-154283.Xip7xE.rst @@ -0,0 +1,2 @@ +On DragonFly BSD, :func:`threading.get_native_id` now returns a value that is +unique across processes, matching the other platforms. diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h index 8496f91db2ee..de93178576e6 100644 --- a/Python/thread_pthread.h +++ b/Python/thread_pthread.h @@ -399,8 +399,8 @@ PyThread_get_thread_native_id(void) lwpid_t native_id; native_id = _lwp_self(); #elif defined(__DragonFly__) - lwpid_t native_id; - native_id = lwp_gettid(); + // lwp_gettid() is only unique within a process, so combine it with the pid. + unsigned long native_id = (unsigned long)getpid() << 32 | lwp_gettid(); #elif defined(__sun__) && SIZEOF_LONG >= 8 unsigned long native_id = (unsigned long)getpid() << 32 | thr_self(); #endif