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Code Issues Releases Activity

Add offset parameter to ring_buffer_write_ptr() function

This commit is contained in:
Marcel Holtmann 2010-04-24 18:59:44 +02:00
parent 9fd7d841c8
commit 8f05535bb2
5 changed files with 12 additions and 10 deletions
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2
gatchat/gatchat.c
View File

@ -711,7 +711,7 @@ static gboolean received_data(GIOChannel *channel, GIOCondition cond,
break;
rbytes = 0;
buf = ring_buffer_write_ptr(chat->buf);
buf = ring_buffer_write_ptr(chat->buf, 0);
err = g_io_channel_read(channel, (char *) buf, toread, &rbytes);
g_at_util_debug_chat(TRUE, (char *)buf, rbytes,

4
gatchat/gathdlc.c
View File

@ -123,7 +123,7 @@ static gboolean received_data(GIOChannel *channel, GIOCondition cond,
break;
rbytes = 0;
buf = ring_buffer_write_ptr(hdlc->read_buffer);
buf = ring_buffer_write_ptr(hdlc->read_buffer, 0);
err = g_io_channel_read(channel, (char *) buf, toread, &rbytes);
g_at_util_debug_dump(TRUE, buf, rbytes,
@ -319,7 +319,7 @@ gboolean g_at_hdlc_send(GAtHDLC *hdlc, const unsigned char *data, gsize size)
{
unsigned int avail = ring_buffer_avail(hdlc->write_buffer);
unsigned int wrap = ring_buffer_avail_no_wrap(hdlc->write_buffer);
unsigned char *buf = ring_buffer_write_ptr(hdlc->write_buffer);
unsigned char *buf = ring_buffer_write_ptr(hdlc->write_buffer, 0);
unsigned char tail[3];
unsigned int i = 0;
guint16 fcs = HDLC_INITFCS;

2
gatchat/gatserver.c
View File

@ -944,7 +944,7 @@ static gboolean received_data(GIOChannel *channel, GIOCondition cond,
break;
rbytes = 0;
buf = ring_buffer_write_ptr(server->read_buf);
buf = ring_buffer_write_ptr(server->read_buf, 0);
err = g_io_channel_read(channel, (char *) buf, toread, &rbytes);
g_at_util_debug_chat(TRUE, (char *)buf, rbytes,

5
gatchat/ringbuffer.c
View File

@ -90,9 +90,10 @@ int ring_buffer_write(struct ring_buffer *buf, const void *data,
return len;
}
unsigned char *ring_buffer_write_ptr(struct ring_buffer *buf)
unsigned char *ring_buffer_write_ptr(struct ring_buffer *buf,
unsigned int offset)
{
return buf->buffer + buf->in % buf->size;
return buf->buffer + (buf->in + offset) % buf->size;
}
int ring_buffer_avail_no_wrap(struct ring_buffer *buf)

9
gatchat/ringbuffer.h
View File

@ -56,11 +56,12 @@ int ring_buffer_write(struct ring_buffer *buf, const void *data,
int ring_buffer_write_advance(struct ring_buffer *buf, unsigned int len);
/*!
* Returns the write pointer. Careful not to write past the end of the
* buffer. Use the ring_buffer_avail_no_wrap function,
* ring_buffer_write_advance.
* Returns the write pointer with write offset specified by offset. Careful
* not to write past the end of the buffer. Use the ring_buffer_avail_no_wrap
* function, and ring_buffer_write_advance.
*/
unsigned char *ring_buffer_write_ptr(struct ring_buffer *buf);
unsigned char *ring_buffer_write_ptr(struct ring_buffer *buf,
unsigned int offset);
/*!
* Returns the number of free bytes available in the buffer