diff options
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2014-03-12 11:48:18 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-03-27 17:48:11 +0200 |
| commit | 5c312079417908381ffca44d18150b6a990c4f0b (patch) | |
| tree | 7bfa5c082c733ea09edd056dde31d8ff04741c2d /util | |
| parent | f7bc8ef8091229a4bec0e2a40af90abb8dcb3834 (diff) | |
Detect pthread_setname_np at configure time
Warn if no way of setting thread name is available.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'util')
| -rw-r--r-- | util/qemu-thread-posix.c | 21 | ||||
| -rw-r--r-- | util/qemu-thread-win32.c | 2 |
2 files changed, 20 insertions, 3 deletions
diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index 960d7f5d42..d05a6497e1 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -32,6 +32,13 @@ static bool name_threads; void qemu_thread_naming(bool enable) { name_threads = enable; + +#ifndef CONFIG_THREAD_SETNAME_BYTHREAD + /* This is a debugging option, not fatal */ + if (enable) { + fprintf(stderr, "qemu: thread naming not supported on this host\n"); + } +#endif } static void error_exit(int err, const char *msg) @@ -394,6 +401,16 @@ void qemu_event_wait(QemuEvent *ev) } } +/* Attempt to set the threads name; note that this is for debug, so + * we're not going to fail if we can't set it. + */ +static void qemu_thread_set_name(QemuThread *thread, const char *name) +{ +#ifdef CONFIG_PTHREAD_SETNAME_NP + pthread_setname_np(thread->thread, name); +#endif +} + void qemu_thread_create(QemuThread *thread, const char *name, void *(*start_routine)(void*), void *arg, int mode) @@ -420,11 +437,9 @@ void qemu_thread_create(QemuThread *thread, const char *name, if (err) error_exit(err, __func__); -#if defined(__GLIBC__) && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 12)) if (name_threads) { - pthread_setname_np(thread->thread, name); + qemu_thread_set_name(thread, name); } -#endif pthread_sigmask(SIG_SETMASK, &oldset, NULL); diff --git a/util/qemu-thread-win32.c b/util/qemu-thread-win32.c index b9c957b6a0..c405c9bef6 100644 --- a/util/qemu-thread-win32.c +++ b/util/qemu-thread-win32.c @@ -22,6 +22,8 @@ void qemu_thread_naming(bool enable) { /* But note we don't actually name them on Windows yet */ name_threads = enable; + + fprintf(stderr, "qemu: thread naming not supported on this host\n"); } static void error_exit(int err, const char *msg) |