log_compress.h File Reference

#include "lz4.h"

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Classes
struct	log_zip

Macros
#define	MAKE_ZIP_LEN(length)   ((length) | 0x80000000)
#define	GET_ZIP_LEN(length)   ((length) & ~(0x80000000))
#define	ZIP_CHECK(length)   (((length) & 0x80000000) ? true : false)
#define	LOG_ZIP_BUF_SIZE(length)   (LZ4_compressBound(length) + sizeof(LOG_ZIP_SIZE_T))
#define	LOG_ZIP_SIZE_T   int

Typedefs
typedef struct log_zip	LOG_ZIP

Functions
LOG_ZIP *	log_zip_alloc (LOG_ZIP_SIZE_T size)
void	log_zip_free (LOG_ZIP *log_zip)
bool	log_zip (LOG_ZIP *log_zip, LOG_ZIP_SIZE_T length, const void *data)
bool	log_unzip (LOG_ZIP *log_unzip, LOG_ZIP_SIZE_T length, void *data)
bool	log_diff (LOG_ZIP_SIZE_T undo_length, const void *undo_data, LOG_ZIP_SIZE_T redo_length, void *redo_data)

Macro Definition Documentation

#define GET_ZIP_LEN

(

length

)

((length) & ~(0x80000000))

Definition at line 36 of file log_compress.h.

Referenced by la_get_log_data(), la_get_next_update_log(), la_get_undoredo_diff(), log_dump_data(), log_dump_record_mvcc_redo(), log_dump_record_mvcc_undo(), log_dump_record_mvcc_undoredo(), log_dump_record_redo(), log_dump_record_sysop_end_internal(), log_dump_record_undo(), log_dump_record_undoredo(), log_get_undo_record(), log_recovery_redo(), log_rollback_record(), log_rv_get_unzip_log_data(), log_rv_redo_record(), log_rv_undo_record(), log_startof_nxrec(), and vacuum_process_log_record().

#define LOG_ZIP_BUF_SIZE

(

length

)

(LZ4_compressBound(length) + sizeof(LOG_ZIP_SIZE_T))

Definition at line 43 of file log_compress.h.

Referenced by log_zip(), and log_zip_alloc().

#define LOG_ZIP_SIZE_T   int

Definition at line 46 of file log_compress.h.

Referenced by log_diff(), log_unzip(), log_zip(), and log_zip_alloc().

#define MAKE_ZIP_LEN

(

length

)

((length) | 0x80000000)

Definition at line 33 of file log_compress.h.

Referenced by prior_lsa_gen_undoredo_record_from_crumbs().

#define ZIP_CHECK

(

length

)

(((length) & 0x80000000) ? true : false)

Definition at line 39 of file log_compress.h.

Referenced by la_get_log_data(), la_get_next_update_log(), la_get_undoredo_diff(), log_dump_data(), log_get_undo_record(), log_rollback_record(), log_rv_get_unzip_log_data(), log_rv_redo_record(), log_rv_undo_record(), and vacuum_process_log_record().

Typedef Documentation

typedef struct log_zip LOG_ZIP

Definition at line 51 of file log_compress.h.

Function Documentation

bool log_diff	(	LOG_ZIP_SIZE_T	undo_length,
		const void *	undo_data,
		LOG_ZIP_SIZE_T	redo_length,
		void *	redo_data
	)

Definition at line 201 of file log_compress.c.

References assert, i, LOG_ZIP_SIZE_T, NULL, and p.

Referenced by la_get_zipped_data(), log_rv_redo_record(), and prior_lsa_gen_undoredo_record_from_crumbs().

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bool log_unzip	(	LOG_ZIP *	log_unzip,
		LOG_ZIP_SIZE_T	length,
		void *	data
	)

Definition at line 123 of file log_compress.c.

References ARG_FILE_LINE, assert, log_zip::buf_size, log_zip::data_length, ER_ERROR_SEVERITY, ER_OUT_OF_VIRTUAL_MEMORY, er_set(), free_and_init, log_zip::log_data, LOG_ZIP_SIZE_T, NULL, and PSTAT_LOG_LZ4_DECOMPRESS_TIME_COUNTERS.

Referenced by la_get_log_data(), la_get_next_update_log(), la_get_undoredo_diff(), log_dump_data(), log_get_undo_record(), log_rollback_record(), log_rv_get_unzip_log_data(), log_rv_redo_record(), log_rv_undo_record(), and vacuum_process_log_record().

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bool log_zip	(	LOG_ZIP *	log_zip,
		LOG_ZIP_SIZE_T	length,
		const void *	data
	)

Definition at line 43 of file log_compress.c.

References ARG_FILE_LINE, assert, log_zip::buf_size, log_zip::data_length, ER_ERROR_SEVERITY, ER_OUT_OF_VIRTUAL_MEMORY, er_set(), free_and_init, log_zip::log_data, LOG_ZIP_BUF_SIZE, LOG_ZIP_SIZE_T, NULL, and PSTAT_LOG_LZ4_COMPRESS_TIME_COUNTERS.

Referenced by log_zip_alloc(), and prior_lsa_gen_undoredo_record_from_crumbs().

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LOG_ZIP* log_zip_alloc

(

LOG_ZIP_SIZE_T

size

)

Definition at line 230 of file log_compress.c.

References ARG_FILE_LINE, assert, log_zip::buf_size, log_zip::data_length, ER_ERROR_SEVERITY, ER_OUT_OF_VIRTUAL_MEMORY, er_set(), free_and_init, log_zip::log_data, log_zip(), LOG_ZIP_BUF_SIZE, LOG_ZIP_SIZE_T, and NULL.

Referenced by la_apply_pre(), log_append_get_zip_redo(), log_append_get_zip_undo(), log_append_init_zip(), log_get_undo_record(), log_recovery_redo(), log_recovery_undo(), log_rollback(), vacuum_worker_allocate_resources(), and xlog_dump().

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void log_zip_free

(

LOG_ZIP *

log_zip

)

Definition at line 265 of file log_compress.c.

References assert, free_and_init, log_zip::log_data, and NULL.

Referenced by cubthread::entry::clear_resources(), la_shutdown(), log_append_final_zip(), log_append_init_zip(), log_get_undo_record(), log_recovery_redo(), log_recovery_undo(), log_rollback(), vacuum_finalize_worker(), and xlog_dump().

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