diff options
Diffstat (limited to 'src/sqlite.h.in')
| -rw-r--r-- | src/sqlite.h.in | 30 |
1 files changed, 7 insertions, 23 deletions
diff --git a/src/sqlite.h.in b/src/sqlite.h.in index c0a280378..666a2e084 100644 --- a/src/sqlite.h.in +++ b/src/sqlite.h.in @@ -707,24 +707,6 @@ struct sqlite3_file { ** fails to zero-fill short reads might seem to work. However, ** failure to zero-fill short reads will eventually lead to ** database corruption. -** -** Assuming parameter nNew is non-zero, the xMremap method should attempt -** to memory map a region nNew bytes in size starting at offset iOffset -** of the file. If successful, it should set *ppMap to point to the -** mapping and return SQLITE_OK. If the file is opened for read-write -** access, then the mapping should also be read-write. -** -** If nOld is non-zero, then the initial value of *ppMap points to a -** mapping returned by a previous call to xMremap. The existing mapping -** is nOld bytes in size and starts at offset iOffset of the file. In -** this case the xMremap method is expected to unmap the existing mapping -** and overwrite *ppMap with the pointer to the new mapping. If nOld is -** zero, then the initial value of *ppMap is undefined. -** -** If nNew is zero, then no new mapping should be created. Any old -** mapping must still be unmapped if nOld is non-zero. If the nOld -** parameter is non-zero, then the existing mapping is always unmapped - -** even if an error occurs. */ typedef struct sqlite3_io_methods sqlite3_io_methods; struct sqlite3_io_methods { @@ -747,14 +729,12 @@ struct sqlite3_io_methods { void (*xShmBarrier)(sqlite3_file*); int (*xShmUnmap)(sqlite3_file*, int deleteFlag); /* Methods above are valid for version 2 */ - int (*xMremap)(sqlite3_file *fd, int flags, - sqlite3_int64 iOff, sqlite3_int64 nOld, sqlite3_int64 nNew, void **ppMap); + int (*xFetch)(sqlite3_file*, sqlite3_int64 iOfst, int iAmt, void **pp); + int (*xUnfetch)(sqlite3_file*, void *p); /* Methods above are valid for version 3 */ /* Additional methods may be added in future releases */ }; -#define SQLITE_MREMAP_EXTEND 0x0001 /* xMremap call may extend file */ - /* ** CAPI3REF: Standard File Control Opcodes ** @@ -906,6 +886,10 @@ struct sqlite3_io_methods { ** written into memory obtained from [sqlite3_malloc()]. The caller should ** invoke [sqlite3_free()] on the result to avoid a memory leak. ** +** <li>[[SQLITE_FCNTL_MMAP_SIZE]] +** The argument is assumed to point to a value of type sqlite3_int64. An +** advisory maximum amount of this file to memory map in bytes. +** ** </ul> */ #define SQLITE_FCNTL_LOCKSTATE 1 @@ -924,7 +908,7 @@ struct sqlite3_io_methods { #define SQLITE_FCNTL_PRAGMA 14 #define SQLITE_FCNTL_BUSYHANDLER 15 #define SQLITE_FCNTL_TEMPFILENAME 16 -#define SQLITE_FCNTL_GETFD 17 +#define SQLITE_FCNTL_MMAP_SIZE 18 /* ** CAPI3REF: Mutex Handle |