move iomux_impl.h to src/ dir, it's an implementation detail

src/iomux_epoll.c

@@ -4,7 +4,7 @@
 #include <errno.h>
 #include <string.h>
 #include <assert.h>
-#include "ucore/iomux_impl.h"
+#include "iomux_impl.h"
 
 //epoll (linux specific) IO mux. 
 //We stuff the struct IOMuxFD pointer in the event.data.ptr slot

src/iomux_impl.c

@@ -2,8 +2,8 @@
 #include <string.h>
 #include <string.h>
 #include <assert.h>
-#include <ucore/iomux_impl.h>
 #include "ucore/clock.h"
+#include "iomux_impl.h"
 
 
 //dispatchers for the IOMux implementations */

src/iomux_impl.h

@@ -0,0 +1,49 @@
+#ifndef IO_MUX_IMPL_H_
+#define IO_MUX_IMPL_H_
+
+#include "ucore/iomux.h"
+#include "ucore/timers.h"
+/** struct for IOMux implementations */
+struct IOMux {
+
+    /* TImer instance */
+    struct UCTimers timers;
+
+    /**
+     * Clock used for driving timers, and
+     * providing timeouts for the mux
+     */
+    struct UCoreClock *uclock;
+
+
+    /* Used by mux implementations to hold their own data/instance */
+    void *instance;
+
+    /** Run one iteration of the mux.
+     * The mux implementation must honor the timeout, if given.
+     * The mux implementation must call iomux_timers_run after the
+     * polling has occured (or if it's polling times out)
+     * 
+     * @param mux The IOMux instance
+     * @param timeout absolute time of a timeout - after which timers should run.
+     * If timeout is NULL, no timeout should be set on the poll.
+     */
+    int (*run_impl)(struct IOMux *mux, struct timeval *timeout);
+
+    /* Deallocate the instance specific part of the IOMux */
+    void (*delete_impl)(struct IOMux *mux);
+
+    /** Register an IOMuxFD for events*/
+    int (*register_fd_impl)(struct IOMux *mux, struct IOMuxFD *fd);
+    /** Unregister an IOMuxFD */
+    int (*unregister_fd_impl)(struct IOMux *mux, struct IOMuxFD *fd);
+    /** Update an IOMuxFD (due to its events ('what') has changed*/
+    int (*update_events_impl)(struct IOMux *mux, struct IOMuxFD *fd);
+};
+
+int iomux_select_init(struct IOMux *mux);
+int iomux_epoll_init(struct IOMux *mux);
+int iomux_timers_run(struct IOMux *mux);
+
+#endif
+

src/iomux_select.c

@@ -5,8 +5,8 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <assert.h>
-#include "ucore/iomux_impl.h"
 #include "ucore/utils.h"
+#include "iomux_impl.h"
 
 #define IOMUX_GROW_CHUNK (32)