C++ (Cpp) sd_bus_send_with_reply_and_block示例

示例#1

文件： test-bus-server.c 项目： kwirk/systemd

static int client(struct context *c) {
        _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
        _cleanup_bus_unref_ sd_bus *bus = NULL;
        sd_bus_error error = SD_BUS_ERROR_NULL;
        int r;

        assert_se(sd_bus_new(&bus) >= 0);
        assert_se(sd_bus_set_fd(bus, c->fds[1], c->fds[1]) >= 0);
        assert_se(sd_bus_set_negotiate_fds(bus, c->client_negotiate_unix_fds) >= 0);
        assert_se(sd_bus_set_anonymous(bus, c->client_anonymous_auth) >= 0);
        assert_se(sd_bus_start(bus) >= 0);

        r = sd_bus_message_new_method_call(
                        bus,
                        "org.freedesktop.systemd.test",
                        "/",
                        "org.freedesktop.systemd.test",
                        "Exit",
                        &m);
        if (r < 0) {
                log_error("Failed to allocate method call: %s", strerror(-r));
                return r;
        }

        r = sd_bus_send_with_reply_and_block(bus, m, 0, &error, &reply);
        if (r < 0) {
                log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
                return r;
        }

        return 0;
}

示例#2

文件： test-bus-kernel-benchmark.c 项目： prodigeni/systemd

static void transaction(sd_bus *b, size_t sz) {
        _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
        uint8_t *p;

        assert_se(sd_bus_message_new_method_call(b, ":1.1", "/", "benchmark.server", "Work", &m) >= 0);
        assert_se(sd_bus_message_append_array_space(m, 'y', sz, (void**) &p) >= 0);

        memset(p, 0x80, sz);

        assert_se(sd_bus_send_with_reply_and_block(b, m, 0, NULL, &reply) >= 0);
}