X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fdynamic-buffer.c;fp=src%2Fcommon%2Fdynamic-buffer.c;h=0000000000000000000000000000000000000000;hp=d6ad6740fc62434ffc09f06dfc8689f955111a23;hb=a6bc4ca9d659caf016ef932fcd944029737ac57c;hpb=97535efaa975ca52bf02c2d5e76351bfd2e3defa

diff --git a/src/common/dynamic-buffer.c b/src/common/dynamic-buffer.c
deleted file mode 100644
index d6ad6740f..000000000
--- a/src/common/dynamic-buffer.c
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <common/dynamic-buffer.h>
-#include <common/buffer-view.h>
-#include <common/utils.h>
-
-/*
- * Round to (upper) power of two, val is returned if it already is a power of
- * two.
- */
-static
-size_t round_to_power_of_2(size_t val)
-{
-	size_t rounded;
-	const int order = utils_get_count_order_u64(val);
-
-	LTTNG_ASSERT(order >= 0);
-	rounded = (1ULL << order);
-	LTTNG_ASSERT(rounded >= val);
-
-	return rounded;
-}
-
-void lttng_dynamic_buffer_init(struct lttng_dynamic_buffer *buffer)
-{
-	LTTNG_ASSERT(buffer);
-	memset(buffer, 0, sizeof(*buffer));
-}
-
-int lttng_dynamic_buffer_append(struct lttng_dynamic_buffer *buffer,
-		const void *buf, size_t len)
-{
-	int ret = 0;
-
-	if (!buffer || (!buf && len)) {
-		ret = -1;
-		goto end;
-	}
-
-	if (len == 0) {
-		/* Not an error, no-op. */
-		goto end;
-	}
-
-	LTTNG_ASSERT(buffer->_capacity >= buffer->size);
-	if (buffer->_capacity < (len + buffer->size)) {
-		ret = lttng_dynamic_buffer_set_capacity(buffer,
-				buffer->_capacity +
-				(len - (buffer->_capacity - buffer->size)));
-		if (ret) {
-			goto end;
-		}
-	}
-
-	memcpy(buffer->data + buffer->size, buf, len);
-	buffer->size += len;
-end:
-	return ret;
-}
-
-int lttng_dynamic_buffer_append_buffer(struct lttng_dynamic_buffer *dst_buffer,
-		const struct lttng_dynamic_buffer *src_buffer)
-{
-	int ret;
-
-	if (!dst_buffer || !src_buffer) {
-		ret = -1;
-		goto end;
-	}
-
-	ret = lttng_dynamic_buffer_append(dst_buffer, src_buffer->data,
-			src_buffer->size);
-end:
-	return ret;
-}
-
-int lttng_dynamic_buffer_append_view(struct lttng_dynamic_buffer *buffer,
-		const struct lttng_buffer_view *src)
-{
-	int ret;
-
-	if (!buffer || !src) {
-		ret = -1;
-		goto end;
-	}
-
-	ret = lttng_dynamic_buffer_append(buffer, src->data,
-			src->size);
-end:
-	return ret;
-}
-
-int lttng_dynamic_buffer_set_size(struct lttng_dynamic_buffer *buffer,
-		size_t new_size)
-{
-	int ret = 0;
-
-	if (!buffer) {
-		goto end;
-	}
-
-	if (new_size == buffer->size) {
-		goto end;
-	}
-
-	if (new_size > buffer->_capacity) {
-		ret = lttng_dynamic_buffer_set_capacity(buffer, new_size);
-		if (ret) {
-			goto end;
-		}
-
-		memset(buffer->data + buffer->size, 0, new_size - buffer->size);
-	} else if (new_size > buffer->size) {
-		memset(buffer->data + buffer->size, 0, new_size - buffer->size);
-	} else {
-		/*
-		 * Shrinking size. There is no need to zero-out the newly
-		 * released memory as it will either be:
-		 *   - overwritten by lttng_dynamic_buffer_append,
-		 *   - expanded later, which will zero-out the memory
-		 *
-		 * Users of external APIs are encouraged to set the buffer's
-		 * size _before_ making such calls.
-		 */
-	}
-
-	buffer->size = new_size;
-end:
-	return ret;
-}
-
-int lttng_dynamic_buffer_set_capacity(struct lttng_dynamic_buffer *buffer,
-		size_t demanded_capacity)
-{
-	int ret = 0;
-	void *new_buf;
-	size_t new_capacity = demanded_capacity ?
-			round_to_power_of_2(demanded_capacity) : 0;
-
-	if (!buffer || demanded_capacity < buffer->size) {
-		/*
-		 * Shrinking a buffer's size by changing its capacity is
-		 * unsupported.
-		 */
-		ret = -1;
-		goto end;
-	}
-
-	if (new_capacity == buffer->_capacity) {
-		goto end;
-	}
-
-	/* Memory is initialized by the size increases. */
-	new_buf = realloc(buffer->data, new_capacity);
-	if (!new_buf) {
-		ret = -1;
-		goto end;
-	}
-
-	buffer->data = new_buf;
-	buffer->_capacity = new_capacity;
-end:
-	return ret;
-}
-
-/* Release any memory used by the dynamic buffer. */
-void lttng_dynamic_buffer_reset(struct lttng_dynamic_buffer *buffer)
-{
-	if (!buffer) {
-		return;
-	}
-
-	buffer->size = 0;
-	buffer->_capacity = 0;
-	free(buffer->data);
-	buffer->data = NULL;
-}
-
-size_t lttng_dynamic_buffer_get_capacity_left(
-		struct lttng_dynamic_buffer *buffer)
-{
-	if (!buffer) {
-		return 0;
-	}
-
-	return buffer->_capacity - buffer->size;
-}