This patch adds discarding desired amount of oldest data from the buffer.
---
src/shared/cbuffer.c | 9 +++++++++
src/shared/cbuffer.h | 1 +
2 files changed, 10 insertions(+)
diff --git a/src/shared/cbuffer.c b/src/shared/cbuffer.c
index 8d85059..a5ed7c5 100644
--- a/src/shared/cbuffer.c
+++ b/src/shared/cbuffer.c
@@ -124,6 +124,15 @@ unsigned int cbuffer_get_size(struct circular_buffer *cbuff)
return cbuff->size;
}
+int cbuffer_discard(struct circular_buffer *cbuff, unsigned int amount)
+{
+ unsigned int len = cbuffer_get_length(cbuff);
+
+ amount = amount > len ? len : amount;
+ cbuff->start = (cbuff->start + amount) & (2 * cbuff->size - 1);
+ return amount;
+}
+
/* Manual mode gives direct access to buffers memory space */
char *cbuffer_get_free_cell(struct circular_buffer *cbuff)
{
diff --git a/src/shared/cbuffer.h b/src/shared/cbuffer.h
index ff29d22..759d8a7 100644
--- a/src/shared/cbuffer.h
+++ b/src/shared/cbuffer.h
@@ -27,6 +27,7 @@ struct circular_buffer *cbuffer_init(unsigned int size);
void cbuffer_free(struct circular_buffer *cbuff);
int cbuffer_write(struct circular_buffer *cbuff, char source);
int cbuffer_read(struct circular_buffer *cbuff, char *dest);
+int cbuffer_discard(struct circular_buffer *cbuff, unsigned int amount);
void cbuffer_drain(struct circular_buffer *cbuff);
int cbuffer_is_full(struct circular_buffer *cbuff);
int cbuffer_is_empty(struct circular_buffer *cbuff);
--
1.7.9.5
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