108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
#ifndef _STASIS_FLAGS_H__
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#define _STASIS_FLAGS_H__
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#include <stasis/bufferManager.h>
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#include <stasis/logger/logger2.h>
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#include <stasis/dirtyPageTable.h>
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/**
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This is the type of buffer manager that is being used.
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Before Stasis is intialized it will be set to a default value.
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It may be changed before Tinit() is called, or overridden at
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compile time by defining USE_BUFFER_MANAGER.
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(eg: gcc ... -DUSE_BUFFER_MANAGER=BUFFER_MANAGER_FOO)
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@see constants.h for a list of recognized buffer manager implementations.
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(The constants are named BUFFER_MANAGER_*)
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*/
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extern stasis_buffer_manager_t* (*stasis_buffer_manager_factory)(stasis_log_t*, stasis_dirty_page_table_t*);
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/**
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This determines which type of file handle the buffer manager will use.
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It defaults to BUFFER_MANAGER_FILE_HANDLE_NON_BLOCKING for a
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non-blocking handle. It can be overridden at compile time by defining
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BUFFER_MANAGER_FILE_HANDLE_TYPE.
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@see constants.h for potential values. (The constants are named
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BUFFER_MANAGER_FILE_HANDLE_*)
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*/
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extern int bufferManagerFileHandleType;
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/**
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Determines which type of slow handle non_blocking will use for the
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buffer manager. Override at compile time by defining
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BUFFER_MANAGER_NON_BLOCKING_SLOW_TYPE.
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@see constants.h: Constants named IO_HANDLE_* are potential values.
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*/
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extern int bufferManagerNonBlockingSlowHandleType;
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/**
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If true, the buffer manager will use O_DIRECT. Set at compile time by
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defining BUFFER_MANAGER_O_DIRECT.
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*/
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extern int bufferManagerO_DIRECT;
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/**
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If true, Stasis will suppress warnings regarding unclean shutdowns.
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This is use to prevent spurious warnings during unit testing, and
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must be set after Tinit() is called. (Tinit() resets this value to
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false).
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(This should not be set by applications, or during compilation.)
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*/
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extern int stasis_suppress_unclean_shutdown_warnings;
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/*
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Truncation options
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*/
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/**
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If true, Stasis will spawn a background thread that periodically
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truncates the log.
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*/
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extern int stasis_truncation_automatic;
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/**
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This is the log implementation that is being used.
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Before Stasis is initialized it will be set to a default value.
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It may be changed before Tinit() is called by assigning to it.
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The default can be overridden at compile time by defining
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USE_LOGGER.
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(eg: gcc ... -DSTASIS_LOG_TYPE=LOG_TO_FOO)
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@see constants.h for a list of recognized log implementations.
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(The constants are named LOG_TO_*)
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@todo rename LOG_TO_* constants to STASIS_LOG_TYPE_*
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*/
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extern int stasis_log_type;
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extern size_t stasis_log_in_memory_max_entries;
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extern char * stasis_log_file_name;
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extern int stasis_log_file_mode;
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extern int stasis_log_file_permissions;
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extern int stasis_log_softcommit;
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extern char * stasis_store_file_name;
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extern const char * stasis_log_dir_name;
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/**
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Maximum number of log chunks that will be created by file pool.
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This number is treated as a hint.
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*/
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extern int stasis_log_file_pool_chunk_count_target;
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/**
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Minimum size of each completed log chunk. This number is treated
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as a hint.
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*/
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extern lsn_t stasis_log_file_pool_chunk_min_size;
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/**
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Number of characters in log file names devoted to storing the LSN.
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*/
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extern const int stasis_log_dir_name_lsn_chars;
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/**
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Number of bytes that stasis' log may buffer before writeback.
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*/
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extern lsn_t stasis_log_file_write_buffer_size;
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#endif
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