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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1772550399; 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=mpVb8oMdchf1wgK/9nknbE71DwoeqoPmXbImYgJMYi4=; b=FHbLrS67GfqJANawSCMH7uNQnSeFwPBbG1fUz8kyyiEq2IuaVni9lMfNeUeVQzm1jyYsnU ikMdVXa5dBrvuxt7fncj08XWqy3uY4t5mpNesLAOdk/8VQ5a86ZXI2W13+utsVE7iY20yl OuVZSQ6rjGkqglOUUaQHpncjo+xZbks= X-MC-Unique: 8hSCx44tO4OjEvMh2meoDw-1 X-Mimecast-MFC-AGG-ID: 8hSCx44tO4OjEvMh2meoDw_1772550396 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?= , Richard Henderson , "Dr. David Alan Gilbert" Subject: [PULL 13/27] util: set the name for the 'main' thread on Windows Date: Tue, 3 Mar 2026 15:05:50 +0000 Message-ID: <20260303150604.2402872-14-berrange@redhat.com> In-Reply-To: <20260303150604.2402872-1-berrange@redhat.com> References: <20260303150604.2402872-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 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=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 27 X-Spam_score: 2.7 X-Spam_bar: ++ X-Spam_report: (2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.322, RCVD_IN_VALIDITY_SAFE_BLOCKED=1.141, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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: 1772550620577154100 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. This is only done on Windows platforms, because on Linux (and possibly other POSIX platforms) changing the main thread name has a side effect of changing the process name reported by tools like 'ps' which fetch from the file /proc/self/task/tid/comm, expecting it to be the binary name. The subsequent patch will address POSIX platforms in a different way. Reviewed-by: Richard Henderson Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Daniel P. Berrang=C3=A9 --- util/qemu-thread-win32.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/util/qemu-thread-win32.c b/util/qemu-thread-win32.c index 31ec305a73..c330d924af 100644 --- a/util/qemu-thread-win32.c +++ b/util/qemu-thread-win32.c @@ -22,6 +22,12 @@ typedef HRESULT (WINAPI *pSetThreadDescription) (HANDLE = hThread, static pSetThreadDescription SetThreadDescriptionFunc; static HMODULE kernel32_module; =20 +static void __attribute__((__constructor__(QEMU_CONSTRUCTOR_EARLY))) +qemu_thread_init(void) +{ + qemu_thread_set_name("main"); +} + static bool load_set_thread_description(void) { static gsize _init_once =3D 0; --=20 2.53.0