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Update the mechanism used to keep track of what kind of syncing to do for

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WAL transaction commits and checkpoint operations.  Use the checkpoint-style
of syncing to sync the header of a new or restarted WAL file.

FossilOrigin-Name: bf65dae8d4297c57ac63228ccf0100f9fabf2fb600438c9f2e10a29c4b118168
This commit is contained in:
drh
2017-08-25 01:14:43 +00:00
parent 9c6e07d2fa
commit daaae7b9d1
7 changed files with 53 additions and 46 deletions
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8
src/wal.h
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@@ -19,11 +19,11 @@
#include "sqliteInt.h"
/* Additional values that can be added to the sync_flags argument of
** sqlite3WalFrames():
/* Macros for extracting appropriate sync flags for either transaction
** commits (WAL_SYNC_FLAGS(X)) or for checkpoint ops (CKPT_SYNC_FLAGS(X)):
*/
#define WAL_SYNC_TRANSACTIONS 0x20 /* Sync at the end of each transaction */
#define SQLITE_SYNC_MASK 0x13 /* Mask off the SQLITE_SYNC_* values */
#define WAL_SYNC_FLAGS(X) ((X)&0x03)
#define CKPT_SYNC_FLAGS(X) (((X)>>2)&0x03)
#ifdef SQLITE_OMIT_WAL
# define sqlite3WalOpen(x,y,z) 0