tests/server: add CTRL event handler for Win32 consoles
Forward CTRL events as signals to existing signal event handler.
diff --git a/tests/server/util.c b/tests/server/util.c
index 5dd4e0a..c8bc329 100644
--- a/tests/server/util.c
+++ b/tests/server/util.c
@@ -567,6 +567,47 @@
errno = old_errno;
}
+#ifdef WIN32
+/* CTRL event handler for Windows Console applications to simulate
+ * SIGINT, SIGTERM and SIGBREAK on CTRL events and trigger signal handler.
+ *
+ * Background information from MSDN:
+ * SIGINT is not supported for any Win32 application. When a CTRL+C
+ * interrupt occurs, Win32 operating systems generate a new thread
+ * to specifically handle that interrupt. This can cause a single-thread
+ * application, such as one in UNIX, to become multithreaded and cause
+ * unexpected behavior.
+ * [...]
+ * The SIGILL and SIGTERM signals are not generated under Windows.
+ * They are included for ANSI compatibility. Therefore, you can set
+ * signal handlers for these signals by using signal, and you can also
+ * explicitly generate these signals by calling raise. Source:
+ * https://docs.microsoft.com/de-de/cpp/c-runtime-library/reference/signal
+ */
+static BOOL WINAPI ctrl_event_handler(DWORD dwCtrlType)
+{
+ int signum = 0;
+ logmsg("ctrl_event_handler: %d", dwCtrlType);
+ switch(dwCtrlType) {
+#ifdef SIGINT
+ case CTRL_C_EVENT: signum = SIGINT; break;
+#endif
+#ifdef SIGTERM
+ case CTRL_CLOSE_EVENT: signum = SIGTERM; break;
+#endif
+#ifdef SIGBREAK
+ case CTRL_BREAK_EVENT: signum = SIGBREAK; break;
+#endif
+ default: return FALSE;
+ }
+ if(signum) {
+ logmsg("ctrl_event_handler: %d -> %d", dwCtrlType, signum);
+ exit_signal_handler(signum);
+ }
+ return TRUE;
+}
+#endif
+
void install_signal_handlers(bool keep_sigalrm)
{
#ifdef SIGHUP
@@ -615,6 +656,10 @@
else
siginterrupt(SIGBREAK, 1);
#endif
+#ifdef WIN32
+ if(!SetConsoleCtrlHandler(ctrl_event_handler, TRUE))
+ logmsg("cannot install CTRL event handler");
+#endif
}
void restore_signal_handlers(bool keep_sigalrm)
@@ -647,4 +692,7 @@
if(SIG_ERR != old_sigbreak_handler)
(void)signal(SIGBREAK, old_sigbreak_handler);
#endif
+#ifdef WIN32
+ (void)SetConsoleCtrlHandler(ctrl_event_handler, FALSE);
+#endif
}
