initial commit of lk (little kernel) project
diff --git a/include/kernel/event.h b/include/kernel/event.h
new file mode 100644
index 0000000..8a7fd1f
--- /dev/null
+++ b/include/kernel/event.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2008 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __KERNEL_EVENT_H
+#define __KERNEL_EVENT_H
+
+#include <kernel/thread.h>
+
+#define EVENT_MAGIC 'evnt'
+
+typedef struct event {
+ int magic;
+ bool signalled;
+ uint flags;
+ wait_queue_t wait;
+} event_t;
+
+#define EVENT_FLAG_AUTOUNSIGNAL 1
+
+void event_init(event_t *, bool initial, uint flags);
+void event_destroy(event_t *);
+status_t event_wait(event_t *);
+status_t event_wait_timeout(event_t *, time_t); /* wait on the event with a timeout */
+status_t event_signal(event_t *, bool reschedule);
+status_t event_unsignal(event_t *);
+
+#endif
+