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branches/zip: Move some private functions from page0zip.ic and page0zip.h

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to page0zip.c.
This commit is contained in:
marko
2006-03-01 11:38:25 +00:00
parent ad003b818c
commit 6dfab3f31f
3 changed files with 116 additions and 177 deletions
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61
include/page0zip.h
View File

@@ -84,67 +84,6 @@ page_zip_validate(
__attribute__((nonnull)); __attribute__((nonnull));
#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ #endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */
/*****************************************************************
Gets the size of the compressed page trailer (the dense page directory),
including deleted records (the free list). */
UNIV_INLINE
ulint
page_zip_dir_size(
/*==============*/
/* out: length of dense page
directory, in bytes */
const page_zip_des_t* page_zip) /* in: compressed page */
__attribute__((pure));
/*****************************************************************
Gets the size of the compressed page trailer (the dense page directory),
only including user records (excluding the free list). */
UNIV_INLINE
ulint
page_zip_dir_user_size(
/*===================*/
/* out: length of dense page
directory, in bytes */
const page_zip_des_t* page_zip) /* in: compressed page */
__attribute__((pure));
/*****************************************************************
Find the slot of the given non-free record in the dense page directory. */
UNIV_INLINE
byte*
page_zip_dir_find(
/*==============*/
/* out: dense directory slot,
or NULL if record not found */
page_zip_des_t* page_zip, /* in: compressed page */
ulint offset) /* in: offset of user record */
__attribute__((pure));
/*****************************************************************
Find the slot of the given free record in the dense page directory. */
UNIV_INLINE
byte*
page_zip_dir_find_free(
/*===================*/
/* out: dense directory slot,
or NULL if record not found */
page_zip_des_t* page_zip, /* in: compressed page */
ulint offset) /* in: offset of user record */
__attribute__((pure));
/*****************************************************************
Read a given slot in the dense page directory. */
UNIV_INLINE
ulint
page_zip_dir_get(
/*=============*/
/* out: record offset
on the uncompressed page,
possibly ORed with
PAGE_ZIP_DIR_SLOT_DEL or
PAGE_ZIP_DIR_SLOT_OWNED */
const page_zip_des_t* page_zip, /* in: compressed page */
ulint slot) /* in: slot
(0=first user record) */
__attribute__((pure));
/************************************************************************** /**************************************************************************
Ensure that enough space is available in the modification log. Ensure that enough space is available in the modification log.
If not, try to compress the page. */ If not, try to compress the page. */

116
include/page0zip.ic
View File

@@ -140,122 +140,6 @@ page_zip_simple_validate(
} }
#endif /* UNIV_DEBUG */ #endif /* UNIV_DEBUG */
/*****************************************************************
Gets the size of the compressed page trailer (the dense page directory),
including deleted records (the free list). */
UNIV_INLINE
ulint
page_zip_dir_size(
/*==============*/
/* out: length of dense page
directory, in bytes */
const page_zip_des_t* page_zip) /* in: compressed page */
{
/* Exclude the page infimum and supremum from the record count. */
ulint size = PAGE_ZIP_DIR_SLOT_SIZE
* (page_dir_get_n_heap((page_t*) page_zip->data) - 2);
ut_ad(page_zip->m_end + size < page_zip->size);
return(size);
}
/*****************************************************************
Gets the size of the compressed page trailer (the dense page directory),
only including user records (excluding the free list). */
UNIV_INLINE
ulint
page_zip_dir_user_size(
/*===================*/
/* out: length of dense page
directory comprising existing
records, in bytes */
const page_zip_des_t* page_zip) /* in: compressed page */
{
ulint size = PAGE_ZIP_DIR_SLOT_SIZE
* page_get_n_recs((page_t*) page_zip->data);
ut_ad(size < page_zip_dir_size(page_zip));
return(size);
}
/*****************************************************************
Find the slot of the given non-free record in the dense page directory. */
UNIV_INLINE
byte*
page_zip_dir_find(
/*==============*/
/* out: dense directory slot,
or NULL if record not found */
page_zip_des_t* page_zip, /* in: compressed page */
ulint offset) /* in: offset of user record */
{
byte* slot;
byte* end;
ut_ad(page_zip_simple_validate(page_zip));
end = page_zip->data + page_zip->size - PAGE_ZIP_DIR_SLOT_SIZE;
slot = end - page_zip_dir_user_size(page_zip);
for (; slot < end; slot += PAGE_ZIP_DIR_SLOT_SIZE) {
if ((mach_read_from_2(slot) & PAGE_ZIP_DIR_SLOT_MASK)
== offset) {
return(slot);
}
}
return(NULL);
}
/*****************************************************************
Find the slot of the given free record in the dense page directory. */
UNIV_INLINE
byte*
page_zip_dir_find_free(
/*===================*/
/* out: dense directory slot,
or NULL if record not found */
page_zip_des_t* page_zip, /* in: compressed page */
ulint offset) /* in: offset of user record */
{
byte* slot;
byte* end;
ut_ad(page_zip_simple_validate(page_zip));
slot = end = page_zip->data + page_zip->size;
slot -= page_zip_dir_size(page_zip);
end -= PAGE_ZIP_DIR_SLOT_SIZE + page_zip_dir_user_size(page_zip);
for (; slot < end; slot += PAGE_ZIP_DIR_SLOT_SIZE) {
if ((mach_read_from_2(slot) & PAGE_ZIP_DIR_SLOT_MASK)
== offset) {
return(slot);
}
}
return(NULL);
}
/*****************************************************************
Read a given slot in the dense page directory. */
UNIV_INLINE
ulint
page_zip_dir_get(
/*=============*/
/* out: record offset
on the uncompressed page,
possibly ORed with
PAGE_ZIP_DIR_SLOT_DEL or
PAGE_ZIP_DIR_SLOT_OWNED */
const page_zip_des_t* page_zip, /* in: compressed page */
ulint slot) /* in: slot
(0=first user record) */
{
ut_ad(page_zip_simple_validate(page_zip));
ut_ad(slot < page_zip_dir_size(page_zip) / PAGE_ZIP_DIR_SLOT_SIZE);
return(mach_read_from_2(page_zip->data + page_zip->size
- PAGE_ZIP_DIR_SLOT_SIZE * (slot + 1)));
}
/************************************************************************** /**************************************************************************
Ensure that enough space is available in the modification log. Ensure that enough space is available in the modification log.
If not, try to compress the page. */ If not, try to compress the page. */

116
page/page0zip.c
View File

@@ -43,6 +43,122 @@ static const byte supremum_extra_data[] = {
0x65, 0x6d, 0x75, 0x6d /* "supremum" */ 0x65, 0x6d, 0x75, 0x6d /* "supremum" */
}; };
/*****************************************************************
Gets the size of the compressed page trailer (the dense page directory),
including deleted records (the free list). */
UNIV_INLINE
ulint
page_zip_dir_size(
/*==============*/
/* out: length of dense page
directory, in bytes */
const page_zip_des_t* page_zip) /* in: compressed page */
{
/* Exclude the page infimum and supremum from the record count. */
ulint size = PAGE_ZIP_DIR_SLOT_SIZE
* (page_dir_get_n_heap((page_t*) page_zip->data) - 2);
ut_ad(page_zip->m_end + size < page_zip->size);
return(size);
}
/*****************************************************************
Gets the size of the compressed page trailer (the dense page directory),
only including user records (excluding the free list). */
UNIV_INLINE
ulint
page_zip_dir_user_size(
/*===================*/
/* out: length of dense page
directory comprising existing
records, in bytes */
const page_zip_des_t* page_zip) /* in: compressed page */
{
ulint size = PAGE_ZIP_DIR_SLOT_SIZE
* page_get_n_recs((page_t*) page_zip->data);
ut_ad(size < page_zip_dir_size(page_zip));
return(size);
}
/*****************************************************************
Find the slot of the given non-free record in the dense page directory. */
UNIV_INLINE
byte*
page_zip_dir_find(
/*==============*/
/* out: dense directory slot,
or NULL if record not found */
page_zip_des_t* page_zip, /* in: compressed page */
ulint offset) /* in: offset of user record */
{
byte* slot;
byte* end;
ut_ad(page_zip_simple_validate(page_zip));
end = page_zip->data + page_zip->size - PAGE_ZIP_DIR_SLOT_SIZE;
slot = end - page_zip_dir_user_size(page_zip);
for (; slot < end; slot += PAGE_ZIP_DIR_SLOT_SIZE) {
if ((mach_read_from_2(slot) & PAGE_ZIP_DIR_SLOT_MASK)
== offset) {
return(slot);
}
}
return(NULL);
}
/*****************************************************************
Find the slot of the given free record in the dense page directory. */
UNIV_INLINE
byte*
page_zip_dir_find_free(
/*===================*/
/* out: dense directory slot,
or NULL if record not found */
page_zip_des_t* page_zip, /* in: compressed page */
ulint offset) /* in: offset of user record */
{
byte* slot;
byte* end;
ut_ad(page_zip_simple_validate(page_zip));
slot = end = page_zip->data + page_zip->size;
slot -= page_zip_dir_size(page_zip);
end -= PAGE_ZIP_DIR_SLOT_SIZE + page_zip_dir_user_size(page_zip);
for (; slot < end; slot += PAGE_ZIP_DIR_SLOT_SIZE) {
if ((mach_read_from_2(slot) & PAGE_ZIP_DIR_SLOT_MASK)
== offset) {
return(slot);
}
}
return(NULL);
}
/*****************************************************************
Read a given slot in the dense page directory. */
UNIV_INLINE
ulint
page_zip_dir_get(
/*=============*/
/* out: record offset
on the uncompressed page,
possibly ORed with
PAGE_ZIP_DIR_SLOT_DEL or
PAGE_ZIP_DIR_SLOT_OWNED */
const page_zip_des_t* page_zip, /* in: compressed page */
ulint slot) /* in: slot
(0=first user record) */
{
ut_ad(page_zip_simple_validate(page_zip));
ut_ad(slot < page_zip_dir_size(page_zip) / PAGE_ZIP_DIR_SLOT_SIZE);
return(mach_read_from_2(page_zip->data + page_zip->size
- PAGE_ZIP_DIR_SLOT_SIZE * (slot + 1)));
}
/************************************************************************** /**************************************************************************
Encode the length of a fixed-length column. */ Encode the length of a fixed-length column. */
static static