fix nowait for polling + add nonblocking example

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/doc/examples/nonblocking/write.c b/doc/examples/nonblocking/write.c
new file mode 100644
index 0000000..7fe9690
--- /dev/null
+++ b/doc/examples/nonblocking/write.c
@@ -0,0 +1,32 @@
+#include <bus.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#define t(stmt)  if (stmt) goto fail
+
+
+
+static char message[BUS_MEMORY_SIZE];
+
+
+
+int main(int argc, char *argv[])
+{
+	bus_t bus;
+	if (argc < 2) {
+		fprintf(stderr, "%s: USAGE: %s message\n", argv[0], argv[0]);
+		return 2;
+	}
+	sprintf(message, "0 %s", argv[1]);
+	t(bus_open(&bus, "/tmp/example-bus", BUS_WRONLY));
+	t(bus_write(&bus, message, BUS_NOWAIT));
+	bus_close(&bus);
+	return 0;
+
+fail:
+	perror("write");
+	bus_close(&bus);
+	return 1;
+}
+