The default main thread name is undefined, so use a constructor to explicitly set it to 'main'. This constructor is marked to run early as the thread name is intended to be used in error reporting / logs which may be triggered very early in QEMU execution. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> --- util/qemu-thread-posix.c | 12 ++++++++++++ util/qemu-thread-win32.c | 6 ++++++ 2 files changed, 18 insertions(+) diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index 7c985b5d38..121d7ed69b 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -22,6 +22,18 @@ #include <pthread_np.h> #endif +static void __attribute__((__constructor__(QEMU_CONSTRUCTOR_EARLY))) +qemu_thread_init(void) +{ +# if defined(CONFIG_PTHREAD_SETNAME_NP_W_TID) + pthread_setname_np(pthread_self(), "main"); +# elif defined(CONFIG_PTHREAD_SETNAME_NP_WO_TID) + pthread_setname_np("main"); +# elif defined(CONFIG_PTHREAD_SET_NAME_NP) + pthread_set_name_np(pthread_self(), "main"); +# endif +} + static void error_exit(int err, const char *msg) { fprintf(stderr, "qemu: %s: %s\n", msg, strerror(err)); diff --git a/util/qemu-thread-win32.c b/util/qemu-thread-win32.c index 9595a5b090..5e6ca0c12f 100644 --- a/util/qemu-thread-win32.c +++ b/util/qemu-thread-win32.c @@ -332,6 +332,12 @@ static void set_thread_description(HANDLE h, const char *name) SetThreadDescriptionFunc(h, namew); } +static void __attribute__((__constructor__(QEMU_CONSTRUCTOR_EARLY))) +qemu_thread_init(void) +{ + set_thread_description(GetCurrentThread(), "main"); +} + void qemu_thread_create(QemuThread *thread, const char *name, void *(*start_routine)(void *), void *arg, int mode) -- 2.50.1