diff options
Diffstat (limited to 'src/third_party/wiredtiger/src/include/wiredtiger.in')
| -rw-r--r-- | src/third_party/wiredtiger/src/include/wiredtiger.in | 154 |
1 files changed, 84 insertions, 70 deletions
diff --git a/src/third_party/wiredtiger/src/include/wiredtiger.in b/src/third_party/wiredtiger/src/include/wiredtiger.in index 0e022048835..10141cd34c1 100644 --- a/src/third_party/wiredtiger/src/include/wiredtiger.in +++ b/src/third_party/wiredtiger/src/include/wiredtiger.in @@ -1785,7 +1785,8 @@ struct __wt_connection { * Enabling the checkpoint server uses a session from the configured * session_max., a set of related configuration options defined below.} * @config{ log_size, wait for this amount of log - * record bytes to be written to the log between each checkpoint. A + * record bytes to be written to the log between each checkpoint. If + * non-zero\, this value will use a minimum of the log file size. A * database can configure both log_size and wait to set an upper bound * for checkpoints; setting this value above 0 configures periodic * checkpoints., an integer between 0 and 2GB; default \c 0.} @@ -1807,21 +1808,23 @@ struct __wt_connection { * number of threads currently running will vary depending on the * current eviction load., an integer between 1 and 20; default \c 1.} * @config{ ),,} - * @config{eviction_dirty_target, continue evicting until the cache has - * less dirty memory than the value\, as a percentage of the total cache - * size. Dirty pages will only be evicted if the cache is full enough - * to trigger eviction., an integer between 1 and 99; default \c 5.} - * @config{eviction_dirty_trigger, trigger eviction when the cache is - * using this much memory for dirty content\, as a percentage of the - * total cache size. This setting only alters behavior if it is lower - * than eviction_trigger., an integer between 1 and 99; default \c 20.} - * @config{eviction_target, continue evicting until the cache has less - * total memory than the value\, as a percentage of the total cache - * size. Must be less than \c eviction_trigger., an integer between 10 - * and 99; default \c 80.} - * @config{eviction_trigger, trigger eviction when the cache is using - * this much memory\, as a percentage of the total cache size., an - * integer between 10 and 99; default \c 95.} + * @config{eviction_dirty_target, perform eviction in worker threads + * when the cache contains at least this much dirty content\, expressed + * as a percentage of the total cache size., an integer between 1 and + * 99; default \c 5.} + * @config{eviction_dirty_trigger, trigger application threads to + * perform eviction when the cache contains at least this much dirty + * content\, expressed as a percentage of the total cache size. This + * setting only alters behavior if it is lower than eviction_trigger., + * an integer between 1 and 99; default \c 20.} + * @config{eviction_target, perform eviction in worker threads when the + * cache contains at least this much content\, expressed as a percentage + * of the total cache size. Must be less than \c eviction_trigger., an + * integer between 10 and 99; default \c 80.} + * @config{eviction_trigger, trigger application threads to perform + * eviction when the cache contains at least this much content\, + * expressed as a percentage of the total cache size., an integer + * between 10 and 99; default \c 95.} * @config{file_manager = (, control how file handles are managed., a * set of related configuration options defined below.} * @config{ close_handle_minimum, number of @@ -1924,8 +1927,8 @@ struct __wt_connection { * \c "lsm_manager"\, \c "metadata"\, \c "mutex"\, \c "overflow"\, \c * "read"\, \c "rebalance"\, \c "reconcile"\, \c "recovery"\, \c * "salvage"\, \c "shared_cache"\, \c "split"\, \c "temporary"\, \c - * "transaction"\, \c "verify"\, \c "version"\, \c "write"; default - * empty.} + * "thread_group"\, \c "transaction"\, \c "verify"\, \c "version"\, \c + * "write"; default empty.} * @configend * @errors */ @@ -2201,14 +2204,14 @@ struct __wt_connection { * checkpoint server uses a session from the configured session_max., a set of * related configuration options defined below.} * @config{ log_size, wait for this amount of log record - * bytes to be written to the log between each checkpoint. A database can - * configure both log_size and wait to set an upper bound for checkpoints; - * setting this value above 0 configures periodic checkpoints., an integer - * between 0 and 2GB; default \c 0.} - * @config{ wait, - * seconds to wait between each checkpoint; setting this value above 0 - * configures periodic checkpoints., an integer between 0 and 100000; default \c - * 0.} + * bytes to be written to the log between each checkpoint. If non-zero\, this + * value will use a minimum of the log file size. A database can configure both + * log_size and wait to set an upper bound for checkpoints; setting this value + * above 0 configures periodic checkpoints., an integer between 0 and 2GB; + * default \c 0.} + * @config{ wait, seconds to wait between + * each checkpoint; setting this value above 0 configures periodic checkpoints., + * an integer between 0 and 100000; default \c 0.} * @config{ ),,} * @config{checkpoint_sync, flush files to stable storage when closing or * writing checkpoints., a boolean flag; default \c true.} @@ -2266,20 +2269,22 @@ struct __wt_connection { * current eviction load., an integer between 1 and 20; default \c 1.} * @config{ * ),,} - * @config{eviction_dirty_target, continue evicting until the cache has less - * dirty memory than the value\, as a percentage of the total cache size. Dirty - * pages will only be evicted if the cache is full enough to trigger eviction., - * an integer between 1 and 99; default \c 5.} - * @config{eviction_dirty_trigger, trigger eviction when the cache is using this - * much memory for dirty content\, as a percentage of the total cache size. - * This setting only alters behavior if it is lower than eviction_trigger., an - * integer between 1 and 99; default \c 20.} - * @config{eviction_target, continue evicting until the cache has less total - * memory than the value\, as a percentage of the total cache size. Must be - * less than \c eviction_trigger., an integer between 10 and 99; default \c 80.} - * @config{eviction_trigger, trigger eviction when the cache is using this much - * memory\, as a percentage of the total cache size., an integer between 10 and - * 99; default \c 95.} + * @config{eviction_dirty_target, perform eviction in worker threads when the + * cache contains at least this much dirty content\, expressed as a percentage + * of the total cache size., an integer between 1 and 99; default \c 5.} + * @config{eviction_dirty_trigger, trigger application threads to perform + * eviction when the cache contains at least this much dirty content\, expressed + * as a percentage of the total cache size. This setting only alters behavior + * if it is lower than eviction_trigger., an integer between 1 and 99; default + * \c 20.} + * @config{eviction_target, perform eviction in worker threads when the cache + * contains at least this much content\, expressed as a percentage of the total + * cache size. Must be less than \c eviction_trigger., an integer between 10 + * and 99; default \c 80.} + * @config{eviction_trigger, trigger application threads to perform eviction + * when the cache contains at least this much content\, expressed as a + * percentage of the total cache size., an integer between 10 and 99; default \c + * 95.} * @config{exclusive, fail if the database already exists\, generally used with * the \c create option., a boolean flag; default \c false.} * @config{extensions, list of shared library extensions to load (using dlopen). @@ -2440,7 +2445,8 @@ struct __wt_connection { * \c "handleops"\, \c "log"\, \c "lsm"\, \c "lsm_manager"\, \c "metadata"\, \c * "mutex"\, \c "overflow"\, \c "read"\, \c "rebalance"\, \c "reconcile"\, \c * "recovery"\, \c "salvage"\, \c "shared_cache"\, \c "split"\, \c "temporary"\, - * \c "transaction"\, \c "verify"\, \c "version"\, \c "write"; default empty.} + * \c "thread_group"\, \c "transaction"\, \c "verify"\, \c "version"\, \c + * "write"; default empty.} * @config{write_through, Use \c FILE_FLAG_WRITE_THROUGH on Windows to write to * files. Ignored on non-Windows systems. Options are given as a list\, such * as <code>"write_through=[data]"</code>. Configuring \c write_through requires @@ -3923,48 +3929,54 @@ struct __wt_file_handle { WT_SESSION *session, wt_off_t offset, wt_off_t len, int advice); /*! - * Ensure disk space is allocated for the file, based on the POSIX - * 1003.1 standard fallocate. + * Extend the file. * * This method is not required, and should be set to NULL when not * supported by the file. * + * Any allocated disk space must read as 0 bytes, and no existing file + * data may change. Allocating all necessary underlying storage (not + * changing just the file's metadata), is likely to result in increased + * performance. + * * This method is not called by multiple threads concurrently (on the - * same file handle). If the file handle's fallocate method supports - * concurrent calls, set the WT_FILE_HANDLE::fallocate_nolock method - * instead. + * same file handle). If the file handle's extension method supports + * concurrent calls, set the WT_FILE_HANDLE::fh_extend_nolock method + * instead. See @ref custom_file_systems for more information. * * @errors * * @param file_handle the WT_FILE_HANDLE * @param session the current WiredTiger session - * @param offset the file offset - * @param len the size of the advisory + * @param offset desired file size after extension */ - int (*fh_allocate)(WT_FILE_HANDLE *file_handle, - WT_SESSION *session, wt_off_t, wt_off_t); + int (*fh_extend)( + WT_FILE_HANDLE *file_handle, WT_SESSION *session, wt_off_t offset); /*! - * Ensure disk space is allocated for the file, based on the POSIX - * 1003.1 standard fallocate. + * Extend the file. * * This method is not required, and should be set to NULL when not * supported by the file. * + * Any allocated disk space must read as 0 bytes, and no existing file + * data may change. Allocating all necessary underlying storage (not + * only changing the file's metadata), is likely to result in increased + * performance. + * * This method may be called by multiple threads concurrently (on the - * same file handle). If the file handle's fallocate method does not - * support concurrent calls, set the WT_FILE_HANDLE::fallocate method - * instead. + * same file handle). If the file handle's extension method does not + * support concurrent calls, set the WT_FILE_HANDLE::fh_extend method + * instead. See @ref custom_file_systems for more information. * * @errors * * @param file_handle the WT_FILE_HANDLE * @param session the current WiredTiger session - * @param offset the file offset - * @param len the size of the advisory + * @param offset desired file size after extension */ - int (*fh_allocate_nolock)(WT_FILE_HANDLE *file_handle, - WT_SESSION *session, wt_off_t, wt_off_t); + int (*fh_extend_nolock)( + WT_FILE_HANDLE *file_handle, WT_SESSION *session, wt_off_t offset); /*! * Lock/unlock a file from the perspective of other processes running @@ -4111,20 +4123,22 @@ struct __wt_file_handle { int (*fh_sync_nowait)(WT_FILE_HANDLE *file_handle, WT_SESSION *session); /*! - * Lengthen or shorten a file to the specified length, based on the - * POSIX 1003.1 standard ftruncate. + * Truncate the file. * - * This method is not required for read-only files, and should be set - * to NULL when not supported by the file. + * This method is not required, and should be set to NULL when not + * supported by the file. + * + * This method is not called by multiple threads concurrently (on the + * same file handle). * * @errors * * @param file_handle the WT_FILE_HANDLE * @param session the current WiredTiger session - * @param length desired file size after truncate + * @param offset desired file size after truncate */ int (*fh_truncate)( - WT_FILE_HANDLE *file_handle, WT_SESSION *session, wt_off_t length); + WT_FILE_HANDLE *file_handle, WT_SESSION *session, wt_off_t offset); /*! * Write to a file, based on the POSIX 1003.1 standard pwrite. @@ -4275,15 +4289,15 @@ extern int wiredtiger_extension_terminate(WT_CONNECTION *connection); #define WT_STAT_CONN_CACHE_EVICTION_QUEUE_NOT_EMPTY 1042 /*! cache: eviction server evicting pages */ #define WT_STAT_CONN_CACHE_EVICTION_SERVER_EVICTING 1043 -/*! cache: eviction server populating queue, but not evicting pages */ -#define WT_STAT_CONN_CACHE_EVICTION_SERVER_NOT_EVICTING 1044 /*! cache: eviction server skipped very large page */ -#define WT_STAT_CONN_CACHE_EVICTION_SERVER_TOOBIG 1045 +#define WT_STAT_CONN_CACHE_EVICTION_SERVER_TOOBIG 1044 /*! cache: eviction server slept, because we did not make progress with * eviction */ -#define WT_STAT_CONN_CACHE_EVICTION_SERVER_SLEPT 1046 +#define WT_STAT_CONN_CACHE_EVICTION_SERVER_SLEPT 1045 /*! cache: eviction server unable to reach eviction goal */ -#define WT_STAT_CONN_CACHE_EVICTION_SLOW 1047 +#define WT_STAT_CONN_CACHE_EVICTION_SLOW 1046 +/*! cache: eviction state */ +#define WT_STAT_CONN_CACHE_EVICTION_STATE 1047 /*! cache: eviction worker thread evicting pages */ #define WT_STAT_CONN_CACHE_EVICTION_WORKER_EVICTING 1048 /*! cache: failed eviction of pages that exceeded the in-memory maximum */ |