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Thu, 24 Oct 2024 20:00:35 +0000 (GMT) From: Ilya Leoshkevich To: Warner Losh , Riku Voipio , Laurent Vivier , Paolo Bonzini , Richard Henderson Cc: Kyle Evans , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org, Ilya Leoshkevich Subject: [PATCH 5/8] osdep: Introduce qemu_kill_thread() Date: Thu, 24 Oct 2024 21:59:12 +0200 Message-ID: <20241024200031.80327-6-iii@linux.ibm.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241024200031.80327-1-iii@linux.ibm.com> References: <20241024200031.80327-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: W0eNdIaH7aQ0Fpy5Y2V3hUEQenoK9SMD X-Proofpoint-GUID: W0eNdIaH7aQ0Fpy5Y2V3hUEQenoK9SMD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 mlxlogscore=875 malwarescore=0 impostorscore=0 bulkscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410240159 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add a function for sending signals to individual threads. It does not make sense on Windows, so do not provide an implementation, so that if someone uses it by accident, they will get a linker error. Signed-off-by: Ilya Leoshkevich Reviewed-by: Richard Henderson Reviewed-by: Warner Losh --- include/qemu/osdep.h | 9 +++++++++ util/oslib-posix.c | 15 +++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index fe7c3c5f673..2350477787a 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -626,6 +626,15 @@ bool qemu_write_pidfile(const char *pidfile, Error **errp); int qemu_get_thread_id(void); +/** + * qemu_kill_thread: + * @tid: thread id. + * @sig: host signal. + * + * Send @sig to one of QEMU's own threads with identifier @tid. + */ +int qemu_kill_thread(int tid, int sig); + #ifndef CONFIG_IOVEC struct iovec { void *iov_base; diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 11b35e48fb8..32a41fa8640 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -111,6 +111,21 @@ int qemu_get_thread_id(void) #endif } +int qemu_kill_thread(int tid, int sig) +{ +#if defined(__linux__) + return syscall(__NR_tgkill, getpid(), tid, sig); +#elif defined(__FreeBSD__) + return thr_kill2(getpid(), tid, sig); +#elif defined(__NetBSD__) + return _lwp_kill(tid, sig); +#elif defined(__OpenBSD__) + return thrkill(tid, sig, NULL); +#else + return kill(tid, sig); +#endif +} + int qemu_daemon(int nochdir, int noclose) { return daemon(nochdir, noclose);