add build system using Core Library

lib/core/include/core_msgq.h

@@ -0,0 +1,86 @@
+#ifndef __CORE_MSGQ_H__
+#define __CORE_MSGQ_H__
+
+/**
+ * @file core_msgq.h
+ * @brief Message queue header
+ */
+
+#include "core.h"
+#include "core_time.h"
+#include "core_errno.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+typedef c_uintptr_t msgq_id;
+
+#define MAX_MSG_LEN  0xffff
+
+/**
+ * @return CORE_OK or CORE_ERROR.
+ */
+CORE_DECLARE(status_t) msgq_init(void);
+
+/**
+ * @return CORE_OK or CORE_ERROR.
+ */
+CORE_DECLARE(status_t) msgq_final(void);
+
+#define MSGQ_O_BLOCK        0x0
+#define MSGQ_O_NONBLOCK     0x1
+
+/**
+ * @param id
+ * @param msgsize
+ * @param opt
+ *
+ * @return If succeed, handler value. If fail, zero
+ */
+CORE_DECLARE(msgq_id) msgq_create(int qsize, int msgsize, int opt);
+
+/**
+ * @param id
+ *
+ * @return If succeed, CORE_OK. If fail, CORE_ERROR.
+ */
+CORE_DECLARE(status_t) msgq_delete(msgq_id id);
+
+/**
+ * @param id
+ * @param msg
+ * @param msglen
+ *
+ * @return the number of bytes to be sent. If there is insufficient room in
+ * ring buffer, return CORE_EAGAIN. If any error, CORE_ERROR.
+ */
+CORE_DECLARE(int) msgq_send(msgq_id id, const char *msg, int msglen);
+
+/**
+ * @param id
+ * @param msg
+ * @param msglen
+ *
+ * @return the number of bytes to be read. If any error, CORE_ERROR.
+ * If ring buffer is empty and MSGQ_O_NONBLOCK set, CORE_EAGAIN.
+ */
+CORE_DECLARE(int) msgq_recv(msgq_id id, char *msg, int msglen);
+
+/**
+ * @param id
+ * @param msg
+ * @param msglen
+ *
+ * @return the number of bytes to be read. If any error, CORE_ERROR.
+ * If ring buffer is empty and MSGQ_O_NONBLOCK set, CORE_EAGAIN.
+ * If time out with empty buffer, CORE_TIMEUP.
+ */
+CORE_DECLARE(int) msgq_timedrecv(msgq_id id, char *msg, int msglen,
+        c_time_t timeout);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* !__CORE_MSGQ_H__ */