diff mbox series

[PULL,14/17] osdep: Introduce qemu_kill_thread()

Message ID 20250210161451.3273284-15-alex.bennee@linaro.org
State Accepted
Commit a33dcfe771c7c2460f2a6809c3b73a5d0772396f
Headers show
Series [PULL,01/17] tests/docker: replicate the check-rust-tools-nightly CI job | expand

Commit Message

Alex Bennée Feb. 10, 2025, 4:14 p.m. UTC 
From: Ilya Leoshkevich <iii@linux.ibm.com>

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.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20250117001542.8290-6-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250207153112.3939799-15-alex.bennee@linaro.org>
diff mbox series

Patch

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 112ebdff21..4397a90680 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -631,6 +631,15 @@  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 2bb34dade3..a697c602c6 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);