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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997, 1998, 1999
* Sleepycat Software. All rights reserved.
*
* @(#)os.h 11.1 (Sleepycat) 7/25/99
*/
#if defined(_MSC_VER)
#include <windows.h>
#endif
/*
* Filehandle.
*/
struct __fh_t {
#if defined(_MSC_VER) /* _WIN32 */
HANDLE handle; /* Windows/32 file handle. */
#endif
int fd; /* POSIX file descriptor. */
u_int32_t log_size; /* XXX: Log file size. */
#define DB_FH_NOSYNC 0x01 /* Handle doesn't need to be sync'd. */
#define DB_FH_VALID 0x02 /* Handle is valid. */
u_int8_t flags;
};
/*
* We group certain seek/write calls into a single function so that we
* can use pread(2)/pwrite(2) where they're available.
*/
#define DB_IO_READ 1
#define DB_IO_WRITE 2
typedef struct __io_t {
DB_FH *fhp; /* I/O file handle. */
MUTEX *mutexp; /* Mutex to lock. */
size_t pagesize; /* Page size. */
db_pgno_t pgno; /* Page number. */
u_int8_t *buf; /* Buffer. */
size_t bytes; /* Bytes read/written. */
} DB_IO;
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