1 files changed, 90 insertions, 0 deletions
diff --git a/lang/swift510/files/patch-swift-corelibs-libdispatch_src_queue.c b/lang/swift510/files/patch-swift-corelibs-libdispatch_src_queue.c
new file mode 100644
index 000000000000..09d068cd3802
--- /dev/null
+++ b/lang/swift510/files/patch-swift-corelibs-libdispatch_src_queue.c
@@ -0,0 +1,90 @@
+--- swift-corelibs-libdispatch/src/queue.c.orig	2023-06-15 00:55:45 UTC
++++ swift-corelibs-libdispatch/src/queue.c
+@@ -6467,7 +6467,7 @@ _dispatch_runloop_handle_is_valid(dispatch_runloop_han
+ {
+ #if TARGET_OS_MAC
+ 	return MACH_PORT_VALID(handle);
+-#elif defined(__linux__)
++#elif defined(__linux__) || defined(__FreeBSD__)
+ 	return handle >= 0;
+ #elif defined(_WIN32)
+ 	return handle != NULL;
+@@ -6482,7 +6482,7 @@ _dispatch_runloop_queue_get_handle(dispatch_lane_t dq)
+ {
+ #if TARGET_OS_MAC
+ 	return ((dispatch_runloop_handle_t)(uintptr_t)dq->do_ctxt);
+-#elif defined(__linux__)
++#elif defined(__linux__) || defined(__FreeBSD__)
+ 	// decode: 0 is a valid fd, so offset by 1 to distinguish from NULL
+ 	return ((dispatch_runloop_handle_t)(uintptr_t)dq->do_ctxt) - 1;
+ #elif defined(_WIN32)
+@@ -6499,7 +6499,7 @@ _dispatch_runloop_queue_set_handle(dispatch_lane_t dq,
+ {
+ #if TARGET_OS_MAC
+ 	dq->do_ctxt = (void *)(uintptr_t)handle;
+-#elif defined(__linux__)
++#elif defined(__linux__) || defined(__FreeBSD__)
+ 	// encode: 0 is a valid fd, so offset by 1 to distinguish from NULL
+ 	dq->do_ctxt = (void *)(uintptr_t)(handle + 1);
+ #elif defined(_WIN32)
+@@ -6558,6 +6558,37 @@ _dispatch_runloop_queue_handle_init(void *ctxt)
+ 		}
+ 	}
+ 	handle = fd;
++#elif defined(__FreeBSD__)
++	int kq = kqueuex(KQUEUE_CLOEXEC);
++	if (kq == -1) {
++		int err = errno;
++		switch (err) {
++		case EMFILE:
++			DISPATCH_CLIENT_CRASH(err, "kqueuex() failure: "
++					"process is out of file descriptors");
++			break;
++		case ENFILE:
++			DISPATCH_CLIENT_CRASH(err, "kqueuex() failure: "
++					"system is out of file descriptors");
++			break;
++		case ENOMEM:
++			DISPATCH_CLIENT_CRASH(err, "kqueuex() failure: "
++					"kernel is out of memory or the "
++					"RLIMIT_KQUEUES user resource limit "
++					"would be exceeded");
++			break;
++		default:
++			DISPATCH_INTERNAL_CRASH(err, "kqueuex() failure");
++			break;
++		}
++	}
++	struct kevent kev = {
++		.ident = 0, // Must match the value used by Core Foundation.
++		.filter = EVFILT_USER,
++		.flags = EV_ADD | EV_CLEAR,
++	};
++	dispatch_assume_zero(kevent(kq, &kev, 1, NULL, 0, NULL));
++	handle = kq;
+ #elif defined(_WIN32)
+ 	HANDLE hEvent;
+ 	hEvent = CreateEventW(NULL, /*bManualReset=*/FALSE,
+@@ -6589,7 +6620,7 @@ _dispatch_runloop_queue_handle_dispose(dispatch_lane_t
+ 	kr = mach_port_destruct(mach_task_self(), mp, -1, guard);
+ 	DISPATCH_VERIFY_MIG(kr);
+ 	(void)dispatch_assume_zero(kr);
+-#elif defined(__linux__)
++#elif defined(__linux__) || defined(__FreeBSD__)
+ 	int rc = close(handle);
+ 	(void)dispatch_assume_zero(rc);
+ #elif defined(_WIN32)
+@@ -6628,6 +6659,13 @@ _dispatch_runloop_queue_class_poke(dispatch_lane_t dq)
+ 		result = eventfd_write(handle, 1);
+ 	} while (result == -1 && errno == EINTR);
+ 	(void)dispatch_assume_zero(result);
++#elif defined(__FreeBSD__)
++	struct kevent kev = {
++		.ident = 0, // Must match the value used by Core Foundation.
++		.filter = EVFILT_USER,
++		.fflags = NOTE_TRIGGER,
++	};
++	dispatch_assume_zero(kevent(handle, &kev, 1, NULL, 0, NULL));
+ #elif defined(_WIN32)
+ 	BOOL bSuccess;
+ 	bSuccess = SetEvent(handle);