moved from cbuf to ring_buffer, untested

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18563 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/drivers/midi/usb_midi/Jamfile

@@ -6,6 +6,7 @@ if $(TARGET_PLATFORM) != haiku {
 	UseHeaders [ FDirName $(HAIKU_TOP) headers os drivers ] : true ;
                 # We need the public usb headers also when not compiling for Haiku.
 }
+UsePrivateHeaders [ FDirName kernel util ] ;
 
 KernelAddon usb_midi : kernel drivers bin :
 	usb_midi.c

src/add-ons/kernel/drivers/midi/usb_midi/usb_midi.c

@@ -93,7 +93,7 @@ create_device(const usb_device *dev, const usb_interface_info *ii, uint16 ifno)
 	my_dev->open_fds = NULL;
 	my_dev->active = true;
 	my_dev->flags = 0;
-	my_dev->cbuf = cbuf_init(384);
+	my_dev->rbuf = create_ring_buffer(384);
 	my_dev->total_report_size = sizeof(usb_midi_event_packet);
 	  	
 	return my_dev;
@@ -103,9 +103,9 @@ void
 remove_device (my_device_info *my_dev)
 {
 	assert (my_dev != NULL);
-	if (my_dev->cbuf != NULL) {
-		cbuf_delete(my_dev->cbuf);
-		my_dev->cbuf = NULL;
+	if (my_dev->rbuf != NULL) {
+		delete_ring_buffer(my_dev->rbuf);
+		my_dev->rbuf = NULL;
 	}
   
 	delete_area (my_dev->buffer_area);
@@ -136,7 +136,7 @@ interpret_midi_buffer(my_device_info *my_dev)
 {
 	usb_midi_event_packet *packet = my_dev->buffer;
 	
-	cbuf_putn(my_dev->cbuf, packet->midi, sizeof(packet->midi));
+	ring_buffer_write(my_dev->rbuf, packet->midi, sizeof(packet->midi));
 	release_sem_etc(my_dev->sem_cb, 3, B_DO_NOT_RESCHEDULE);
 }
 
@@ -389,7 +389,9 @@ usb_midi_read(driver_cookie *cookie, off_t position,
 	err = acquire_sem_etc(my_dev->sem_cb, 1, B_CAN_INTERRUPT, 0LL);
 	if (err != B_OK)
 		return err;
-	cbuf_getn(my_dev->cbuf, buf, 1);
+	acquire_sem (my_dev->sem_lock);
+	ring_buffer_user_read(my_dev->rbuf, buf, 1);
+	release_sem (my_dev->sem_lock);
 	*num_bytes = 1;
 	return err;
 }

src/add-ons/kernel/drivers/midi/usb_midi/usb_midi.h

@@ -34,27 +34,7 @@
 #include <USB.h>
 #include <usb/USB_midi.h>
 
-/* Undocumented kernel cbuf_* functions */
-struct cbuffer_t;
-typedef struct cbuffer_t cbuffer;
-
-size_t cbuf_getn_no_lock(cbuffer *, char *, size_t);
-size_t cbuf_putn_no_lock(cbuffer *, char *, size_t);
-cbuffer *cbuf_init(size_t size);
-void cbuf_delete(cbuffer *buffer);
-char cbuf_get(cbuffer *);
-bool cbuf_mt(cbuffer *);
-bool cbuf_full(cbuffer *);
-status_t cbuf_put(cbuffer *, char);
-status_t cbuf_unput(cbuffer *);
-void cbuf_flush(cbuffer *);
-size_t cbuf_size(cbuffer *);
-size_t cbuf_avail(cbuffer *);
-size_t cbuf_free(cbuffer *);
-size_t cbuf_putn(cbuffer *, void *, size_t num_bytes);
-size_t cbuf_getn(cbuffer *, void *, size_t num_bytes);
-cpu_status cbuf_lock(cbuffer *);
-void cbuf_unlock(cbuffer *, cpu_status);
+#include "ring_buffer.h"
 
 #define DEBUG 1
 #if DEBUG
@@ -97,7 +77,7 @@ typedef struct my_device_info
 	uint16 ifno;
 	char name[30];
 	
-	cbuffer *cbuf;
+	struct ring_buffer *rbuf;
 
 	bool active;
 	int open;