The ability to set the thread name needs to be used in a number of places, so expose the current impls as public methods. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Dr. David Alan Gilbert <dave@treblig.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> --- include/qemu/thread.h | 1 + util/qemu-thread-posix.c | 26 ++++++++++++++++---------- util/qemu-thread-win32.c | 13 ++++++++----- 3 files changed, 25 insertions(+), 15 deletions(-) diff --git a/include/qemu/thread.h b/include/qemu/thread.h index 3a286bb3ef..27b888ab0a 100644 --- a/include/qemu/thread.h +++ b/include/qemu/thread.h @@ -215,6 +215,7 @@ void *qemu_thread_join(QemuThread *thread); void qemu_thread_get_self(QemuThread *thread); bool qemu_thread_is_self(QemuThread *thread); G_NORETURN void qemu_thread_exit(void *retval); +void qemu_thread_set_name(const char *name); struct Notifier; /** diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index 7c985b5d38..b1c127dbe3 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -329,6 +329,21 @@ static void qemu_thread_atexit_notify(void *arg) notifier_list_notify(&thread_exit, NULL); } +void qemu_thread_set_name(const char *name) +{ + /* + * 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. + */ +# if defined(CONFIG_PTHREAD_SETNAME_NP_W_TID) + pthread_setname_np(pthread_self(), name); +# elif defined(CONFIG_PTHREAD_SETNAME_NP_WO_TID) + pthread_setname_np(name); +# elif defined(CONFIG_PTHREAD_SET_NAME_NP) + pthread_set_name_np(pthread_self(), name); +# endif +} + typedef struct { void *(*start_routine)(void *); void *arg; @@ -342,17 +357,8 @@ static void *qemu_thread_start(void *args) void *arg = qemu_thread_args->arg; void *r; - /* 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. - */ if (qemu_thread_args->name) { -# if defined(CONFIG_PTHREAD_SETNAME_NP_W_TID) - pthread_setname_np(pthread_self(), qemu_thread_args->name); -# elif defined(CONFIG_PTHREAD_SETNAME_NP_WO_TID) - pthread_setname_np(qemu_thread_args->name); -# elif defined(CONFIG_PTHREAD_SET_NAME_NP) - pthread_set_name_np(pthread_self(), qemu_thread_args->name); -# endif + qemu_thread_set_name(qemu_thread_args->name); } QEMU_TSAN_ANNOTATE_THREAD_NAME(qemu_thread_args->name); g_free(qemu_thread_args->name); diff --git a/util/qemu-thread-win32.c b/util/qemu-thread-win32.c index 9595a5b090..4d2d663a9a 100644 --- a/util/qemu-thread-win32.c +++ b/util/qemu-thread-win32.c @@ -225,6 +225,7 @@ struct QemuThreadData { void *arg; short mode; NotifierList exit; + char *name; /* Only used for joinable threads. */ bool exited; @@ -266,6 +267,10 @@ static unsigned __stdcall win32_start_routine(void *arg) void *(*start_routine)(void *) = data->start_routine; void *thread_arg = data->arg; + if (data->name) { + qemu_thread_set_name(data->name); + g_clear_pointer(&data->name, g_free); + } qemu_thread_data = data; qemu_thread_exit(start_routine(thread_arg)); abort(); @@ -316,7 +321,7 @@ void *qemu_thread_join(QemuThread *thread) return ret; } -static void set_thread_description(HANDLE h, const char *name) +void qemu_thread_set_name(const char *name) { g_autofree wchar_t *namew = NULL; @@ -329,7 +334,7 @@ static void set_thread_description(HANDLE h, const char *name) return; } - SetThreadDescriptionFunc(h, namew); + SetThreadDescriptionFunc(GetCurrentThread(), namew); } void qemu_thread_create(QemuThread *thread, const char *name, @@ -344,6 +349,7 @@ void qemu_thread_create(QemuThread *thread, const char *name, data->arg = arg; data->mode = mode; data->exited = false; + data->name = g_strdup(name); notifier_list_init(&data->exit); if (data->mode != QEMU_THREAD_DETACHED) { @@ -355,9 +361,6 @@ void qemu_thread_create(QemuThread *thread, const char *name, if (!hThread) { error_exit(GetLastError(), __func__); } - if (name) { - set_thread_description(hThread, name); - } CloseHandle(hThread); thread->data = data; -- 2.52.0