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Further simplifications to the SHM locking logic. Remove the SQLITE_SHM_QUERY

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option.  Unify the WRITE to READ and RECOVER to READ transitions.

FossilOrigin-Name: e9bfa6e4ce7d1edc6be8b9173ac3b6bfd180632a
This commit is contained in:
drh
2010-05-05 19:09:49 +00:00
parent c7991bdf29
commit ccd13d1f80
4 changed files with 25 additions and 24 deletions
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6
src/sqlite.h.in
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@@ -879,10 +879,7 @@ struct sqlite3_vfs {
** CAPI3REF: Flags for the xShmLock VFS method
**
** These integer constants define the various locking states that
** an sqlite3_shm object can be in. The SQLITE_SHM_QUERY integer
** is not a valid data - it is a constant pasted to the
** sqlite3_vfs.xShmLock() method for querying the current lock
** state.
** an sqlite3_shm object can be in.
*/
#define SQLITE_SHM_UNLOCK 0
#define SQLITE_SHM_READ 1
@@ -891,7 +888,6 @@ struct sqlite3_vfs {
#define SQLITE_SHM_PENDING 4
#define SQLITE_SHM_CHECKPOINT 5
#define SQLITE_SHM_RECOVER 6
#define SQLITE_SHM_QUERY (-1)
/*
** CAPI3REF: Initialize The SQLite Library