[src/trunk]: src/tests/lib/libc/sys Bump the number of threads in LWP t_ptrac...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e210c6b49934
branches:  trunk
changeset: 455284:e210c6b49934
user:      kamil <kamil%NetBSD.org@localhost>
date:      Sun Oct 13 04:00:12 2019 +0000

description:
Bump the number of threads in LWP t_ptrace_wait*() tests from to 100

This is a torture, but on purpose to catch LWP_CREATED and LWP_EXITED bugs.
The threads do nothing other than calling sched_yield() in a loop.

MAXLWP is now defined to 2048 on all ports.

This change effects the following tests:

 - trace_thread_nolwpevents
 - trace_thread_lwpexit
 - trace_thread_lwpcreate
 - trace_thread_lwpcreate_and_exit

diffstat:

 tests/lib/libc/sys/t_ptrace_wait.c |  12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diffs (47 lines):

diff -r 49af68eb707f -r e210c6b49934 tests/lib/libc/sys/t_ptrace_wait.c
--- a/tests/lib/libc/sys/t_ptrace_wait.c        Sun Oct 13 03:50:26 2019 +0000
+++ b/tests/lib/libc/sys/t_ptrace_wait.c        Sun Oct 13 04:00:12 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ptrace_wait.c,v 1.134 2019/10/02 23:15:09 kamil Exp $        */
+/*     $NetBSD: t_ptrace_wait.c,v 1.135 2019/10/13 04:00:12 kamil Exp $        */
 
 /*-
  * Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.134 2019/10/02 23:15:09 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.135 2019/10/13 04:00:12 kamil Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -5455,6 +5455,8 @@
 
 /// ----------------------------------------------------------------------------
 
+#define TRACE_THREADS_NUM 100
+
 static volatile int done;
 
 static void *
@@ -5463,8 +5465,8 @@
 
        done++;
 
-       while (done < 3)
-               continue;
+       while (done < TRACE_THREADS_NUM)
+               sched_yield();
 
        return NULL;
 }
@@ -5483,7 +5485,7 @@
        const int elen = sizeof(event);
        struct ptrace_siginfo info;
 
-       pthread_t t[3];
+       pthread_t t[TRACE_THREADS_NUM];
        int rv;
        size_t n;
        lwpid_t lid;