move to storage/xtradb

1 files changed, 306 insertions, 0 deletions

diff --git a/storage/xtradb/include/dyn0dyn.ic b/storage/xtradb/include/dyn0dyn.ic
new file mode 100644
index 00000000000..0296554e2ee
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+++ b/storage/xtradb/include/dyn0dyn.ic
@@ -0,0 +1,306 @@
+/*****************************************************************************
+
+Copyright (c) 1996, 2013, Oracle and/or its affiliates. All Rights Reserved.
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; version 2 of the License.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/dyn0dyn.ic
+The dynamically allocated array
+
+Created 2/5/1996 Heikki Tuuri
+*******************************************************/
+
+/** Value of dyn_block_t::magic_n */
+#define DYN_BLOCK_MAGIC_N	375767
+/** Flag for dyn_block_t::used that indicates a full block */
+#define DYN_BLOCK_FULL_FLAG	0x1000000UL
+
+/************************************************************//**
+Adds a new block to a dyn array.
+@return	created block */
+UNIV_INTERN
+dyn_block_t*
+dyn_array_add_block(
+/*================*/
+	dyn_array_t*	arr)	/*!< in/out: dyn array */
+	__attribute__((nonnull, warn_unused_result));
+
+/********************************************************************//**
+Gets the number of used bytes in a dyn array block.
+@return	number of bytes used */
+UNIV_INLINE
+ulint
+dyn_block_get_used(
+/*===============*/
+	const dyn_block_t*	block)	/*!< in: dyn array block */
+{
+	ut_ad(block);
+
+	return((block->used) & ~DYN_BLOCK_FULL_FLAG);
+}
+
+/********************************************************************//**
+Gets pointer to the start of data in a dyn array block.
+@return	pointer to data */
+UNIV_INLINE
+byte*
+dyn_block_get_data(
+/*===============*/
+	const dyn_block_t*	block)	/*!< in: dyn array block */
+{
+	ut_ad(block);
+
+	return(const_cast<byte*>(block->data));
+}
+
+/*********************************************************************//**
+Initializes a dynamic array.
+@return	initialized dyn array */
+UNIV_INLINE
+dyn_array_t*
+dyn_array_create(
+/*=============*/
+	dyn_array_t*	arr)	/*!< in/out: memory buffer of
+				size sizeof(dyn_array_t) */
+{
+	ut_ad(arr);
+#if DYN_ARRAY_DATA_SIZE >= DYN_BLOCK_FULL_FLAG
+# error "DYN_ARRAY_DATA_SIZE >= DYN_BLOCK_FULL_FLAG"
+#endif
+
+	arr->heap = NULL;
+	arr->used = 0;
+
+	ut_d(arr->buf_end = 0);
+	ut_d(arr->magic_n = DYN_BLOCK_MAGIC_N);
+
+	return(arr);
+}
+
+/************************************************************//**
+Frees a dynamic array. */
+UNIV_INLINE
+void
+dyn_array_free(
+/*===========*/
+	dyn_array_t*	arr)	/*!< in: dyn array */
+{
+	if (arr->heap != NULL) {
+		mem_heap_free(arr->heap);
+	}
+
+	ut_d(arr->magic_n = 0);
+}
+
+/*********************************************************************//**
+Makes room on top of a dyn array and returns a pointer to the added element.
+The caller must copy the element to the pointer returned.
+@return	pointer to the element */
+UNIV_INLINE
+void*
+dyn_array_push(
+/*===========*/
+	dyn_array_t*	arr,	/*!< in/out: dynamic array */
+	ulint		size)	/*!< in: size in bytes of the element */
+{
+	dyn_block_t*	block;
+	ulint		used;
+
+	ut_ad(arr);
+	ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N);
+	ut_ad(size <= DYN_ARRAY_DATA_SIZE);
+	ut_ad(size);
+
+	block = arr;
+
+	if (block->used + size > DYN_ARRAY_DATA_SIZE) {
+		/* Get the last array block */
+
+		block = dyn_array_get_last_block(arr);
+
+		if (block->used + size > DYN_ARRAY_DATA_SIZE) {
+			block = dyn_array_add_block(arr);
+		}
+	}
+
+	used = block->used;
+
+	block->used = used + size;
+	ut_ad(block->used <= DYN_ARRAY_DATA_SIZE);
+
+	return(block->data + used);
+}
+
+/*********************************************************************//**
+Makes room on top of a dyn array and returns a pointer to a buffer in it.
+After copying the elements, the caller must close the buffer using
+dyn_array_close.
+@return	pointer to the buffer */
+UNIV_INLINE
+byte*
+dyn_array_open(
+/*===========*/
+	dyn_array_t*	arr,	/*!< in: dynamic array */
+	ulint		size)	/*!< in: size in bytes of the buffer; MUST be
+				smaller than DYN_ARRAY_DATA_SIZE! */
+{
+	dyn_block_t*	block;
+
+	ut_ad(arr);
+	ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N);
+	ut_ad(size <= DYN_ARRAY_DATA_SIZE);
+	ut_ad(size);
+
+	block = arr;
+
+	if (block->used + size > DYN_ARRAY_DATA_SIZE) {
+		/* Get the last array block */
+
+		block = dyn_array_get_last_block(arr);
+
+		if (block->used + size > DYN_ARRAY_DATA_SIZE) {
+			block = dyn_array_add_block(arr);
+			ut_a(size <= DYN_ARRAY_DATA_SIZE);
+		}
+	}
+
+	ut_ad(block->used <= DYN_ARRAY_DATA_SIZE);
+	ut_ad(arr->buf_end == 0);
+	ut_d(arr->buf_end = block->used + size);
+
+	return(block->data + block->used);
+}
+
+/*********************************************************************//**
+Closes the buffer returned by dyn_array_open. */
+UNIV_INLINE
+void
+dyn_array_close(
+/*============*/
+	dyn_array_t*	arr,	/*!< in/out: dynamic array */
+	const byte*	ptr)	/*!< in: end of used space */
+{
+	dyn_block_t*	block;
+
+	ut_ad(arr);
+	ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N);
+
+	block = dyn_array_get_last_block(arr);
+
+	ut_ad(arr->buf_end + block->data >= ptr);
+
+	block->used = ptr - block->data;
+
+	ut_ad(block->used <= DYN_ARRAY_DATA_SIZE);
+
+	ut_d(arr->buf_end = 0);
+}
+
+/************************************************************//**
+Returns pointer to an element in dyn array.
+@return	pointer to element */
+UNIV_INLINE
+void*
+dyn_array_get_element(
+/*==================*/
+	const dyn_array_t*	arr,	/*!< in: dyn array */
+	ulint			pos)	/*!< in: position of element
+					in bytes from array start */
+{
+	const dyn_block_t*	block;
+
+	ut_ad(arr);
+	ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N);
+
+	/* Get the first array block */
+	block = dyn_array_get_first_block(arr);
+
+	if (arr->heap != NULL) {
+		for (;;) {
+			ulint	used = dyn_block_get_used(block);
+
+			if (pos < used) {
+				break;
+			}
+
+			pos -= used;
+			block = UT_LIST_GET_NEXT(list, block);
+			ut_ad(block);
+		}
+	}
+
+	ut_ad(block);
+	ut_ad(dyn_block_get_used(block) >= pos);
+
+	return(const_cast<byte*>(block->data) + pos);
+}
+
+/************************************************************//**
+Returns the size of stored data in a dyn array.
+@return	data size in bytes */
+UNIV_INLINE
+ulint
+dyn_array_get_data_size(
+/*====================*/
+	const dyn_array_t*	arr)	/*!< in: dyn array */
+{
+	const dyn_block_t*	block;
+	ulint			sum	= 0;
+
+	ut_ad(arr);
+	ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N);
+
+	if (arr->heap == NULL) {
+
+		return(arr->used);
+	}
+
+	/* Get the first array block */
+	block = dyn_array_get_first_block(arr);
+
+	while (block != NULL) {
+		sum += dyn_block_get_used(block);
+		block = dyn_array_get_next_block(arr, block);
+	}
+
+	return(sum);
+}
+
+/********************************************************//**
+Pushes n bytes to a dyn array. */
+UNIV_INLINE
+void
+dyn_push_string(
+/*============*/
+	dyn_array_t*	arr,	/*!< in/out: dyn array */
+	const byte*	str,	/*!< in: string to write */
+	ulint		len)	/*!< in: string length */
+{
+	ulint	n_copied;
+
+	while (len > 0) {
+		if (len > DYN_ARRAY_DATA_SIZE) {
+			n_copied = DYN_ARRAY_DATA_SIZE;
+		} else {
+			n_copied = len;
+		}
+
+		memcpy(dyn_array_push(arr, n_copied), str, n_copied);
+
+		str += n_copied;
+		len -= n_copied;
+	}
+}