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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1756490669; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CsQMr5QH89/FrV0mKBjbQ6m8jB0T4odnEedDXMKrtRU=; b=gTrTzWS8AuFn9Ivtbk5dHta+8Yozu22Q8CpgDkAB4c5qeI+ZZP5kMFj1PQANblzAR2I4cz CbbpXUdVd5qiOicLTFHJ3u7pH0oDaJx3aP622cFasRH+YONMafEPtbSc6eWmDRgLmoz5NE sikJ2pN1UVDWnReY0d9O5qVkY4NbEDU= X-MC-Unique: wEn-PJviPTW09Z31JbEcnQ-1 X-Mimecast-MFC-AGG-ID: wEn-PJviPTW09Z31JbEcnQ_1756490664 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Stefan Weil , qemu-block@nongnu.org, Manos Pitsidianakis , "Dr. David Alan Gilbert" , Kevin Wolf , Hanna Reitz , Gerd Hoffmann , Christian Schoenebeck , Markus Armbruster , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v2 04/14] util: expose qemu_thread_set_name Date: Fri, 29 Aug 2025 19:03:44 +0100 Message-ID: <20250829180354.2922145-5-berrange@redhat.com> In-Reply-To: <20250829180354.2922145-1-berrange@redhat.com> References: <20250829180354.2922145-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1756568958209124100 The ability to set the thread name needs to be used in a number of places, so expose the current impls as public methods. Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Richard Henderson --- include/qemu/thread.h | 1 + util/qemu-thread-posix.c | 30 ++++++++++++++++++------------ util/qemu-thread-win32.c | 6 +++--- 3 files changed, 22 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); =20 struct Notifier; /** diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index 7c985b5d38..ddaa1de4dd 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); } =20 +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; @@ -342,20 +357,11 @@ static void *qemu_thread_start(void *args) void *arg =3D qemu_thread_args->arg; void *r; =20 - /* 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); } - QEMU_TSAN_ANNOTATE_THREAD_NAME(qemu_thread_args->name); - g_free(qemu_thread_args->name); g_free(qemu_thread_args); =20 /* diff --git a/util/qemu-thread-win32.c b/util/qemu-thread-win32.c index 9595a5b090..62eaa11026 100644 --- a/util/qemu-thread-win32.c +++ b/util/qemu-thread-win32.c @@ -316,7 +316,7 @@ void *qemu_thread_join(QemuThread *thread) return ret; } =20 -static void set_thread_description(HANDLE h, const char *name) +void qemu_thread_set_name(const char *name) { g_autofree wchar_t *namew =3D NULL; =20 @@ -329,7 +329,7 @@ static void set_thread_description(HANDLE h, const char= *name) return; } =20 - SetThreadDescriptionFunc(h, namew); + SetThreadDescriptionFunc(GetCurrentThread(), namew); } =20 void qemu_thread_create(QemuThread *thread, const char *name, @@ -356,7 +356,7 @@ void qemu_thread_create(QemuThread *thread, const char = *name, error_exit(GetLastError(), __func__); } if (name) { - set_thread_description(hThread, name); + qemu_thread_set_name(name); } CloseHandle(hThread); =20 --=20 2.50.1