This thread-aware profiling support diff comes from Yuichiro NAITO.

At runtime, profiling data is stored per-thread.  Upon termination, the
per-thread profiling data pools are merged into a into a single record,
which is then written out (using the new kernel-assisted system).  I think
the original gmon merging parts may have come from or been inspired by
someone at NetBSD.
This has been delayed because there were concerns about adding a TLS object
which would require other library cranks, so this rides all the major cranks
today.
ok kettenis tb claudio sthen etc etc etc

1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/libc/include/thread_private.h b/src/lib/libc/include/thread_private.h
index 61cc83db60..7e7c716e2a 100644
--- a/src/lib/libc/include/thread_private.h
+++ b/src/lib/libc/include/thread_private.h
@@ -1,10 +1,13 @@
-/* $OpenBSD: thread_private.h,v 1.38 2025/07/12 23:59:44 dlg Exp $ */
+/* $OpenBSD: thread_private.h,v 1.39 2025/07/16 16:22:58 deraadt Exp $ */
 
 /* PUBLIC DOMAIN: No Rights Reserved. Marco S Hyman <marc@snafu.org> */
 
 #ifndef _THREAD_PRIVATE_H_
 #define _THREAD_PRIVATE_H_
 
+#include <sys/types.h>
+#include <sys/gmon.h>
+
 extern int __isthreaded;
 
 #define _MALLOC_MUTEXES 32
@@ -434,6 +437,7 @@ struct pthread {
 
         /* cancel received in a delayed cancel block? */
         int delayed_cancel;
+        struct gmonparam *gmonparam;
 };
 /* flags in pthread->flags */
 #define THREAD_DONE             0x001