diff options
Diffstat (limited to 'src/include/wiredtiger.in')
| -rw-r--r-- | src/include/wiredtiger.in | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/src/include/wiredtiger.in b/src/include/wiredtiger.in index 37788096f39..2365135e08d 100644 --- a/src/include/wiredtiger.in +++ b/src/include/wiredtiger.in @@ -995,6 +995,13 @@ struct __wt_session { * \c "table:stock". For a description of URI formats * see @ref data_sources. * @configstart{WT_SESSION.create, see dist/api_data.py} + * @config{access_pattern_hint, It is recommended that workloads that + * consist primarily of updates and/or point queries specify \c random. + * Workloads that do many cursor scans through large ranges of data + * specify \c sequential and other workloads specify \c none. The + * option leads to an advisory call to an appropriate operating system + * API where available., a string\, chosen from the following options: + * \c "none"\, \c "random"\, \c "sequential"; default \c none.} * @config{allocation_size, the file unit allocation size\, in bytes\, * must a power-of-two; smaller values decrease the file space required * by overflow items\, and the default value of 4KB is a good choice @@ -3734,21 +3741,25 @@ typedef enum { WT_FS_OPEN_FILE_TYPE_REGULAR /*!< open a regular file */ } WT_FS_OPEN_FILE_TYPE; +/*! WT_FILE_SYSTEM::open_file flags: random access pattern */ +#define WT_FS_OPEN_ACCESS_RAND 0x001 +/*! WT_FILE_SYSTEM::open_file flags: sequential access pattern */ +#define WT_FS_OPEN_ACCESS_SEQ 0x002 /*! WT_FILE_SYSTEM::open_file flags: create if does not exist */ -#define WT_FS_OPEN_CREATE 0x001 +#define WT_FS_OPEN_CREATE 0x004 /*! WT_FILE_SYSTEM::open_file flags: direct I/O requested */ -#define WT_FS_OPEN_DIRECTIO 0x002 +#define WT_FS_OPEN_DIRECTIO 0x008 /*! WT_FILE_SYSTEM::open_file flags: file creation must be durable */ -#define WT_FS_OPEN_DURABLE 0x004 +#define WT_FS_OPEN_DURABLE 0x010 /*! * WT_FILE_SYSTEM::open_file flags: return EBUSY if exclusive use not available */ -#define WT_FS_OPEN_EXCLUSIVE 0x008 +#define WT_FS_OPEN_EXCLUSIVE 0x020 #ifndef DOXYGEN -#define WT_FS_OPEN_FIXED 0x010 /* Path not home relative (internal) */ +#define WT_FS_OPEN_FIXED 0x040 /* Path not home relative (internal) */ #endif /*! WT_FILE_SYSTEM::open_file flags: open is read-only */ -#define WT_FS_OPEN_READONLY 0x020 +#define WT_FS_OPEN_READONLY 0x080 /*! * WT_FILE_SYSTEM::remove or WT_FILE_SYSTEM::rename flags: the remove or rename |