mirror of
https://github.com/sqlite/sqlite.git
synced 2025-11-14 00:22:38 +03:00
Split up os.c into separate files, one for each platform. (CVS 1441)
FossilOrigin-Name: 5c61be1c47ac960fba2a642e69a98436ce1cd725
This commit is contained in:
drh
123
src/os.h
123
src/os.h
@@ -17,47 +17,6 @@
|
||||
#ifndef _SQLITE_OS_H_
|
||||
#define _SQLITE_OS_H_
|
||||
|
||||
/*
|
||||
** Helpful hint: To get this to compile on HP/UX, add -D_INCLUDE_POSIX_SOURCE
|
||||
** to the compiler command line.
|
||||
*/
|
||||
|
||||
/*
|
||||
** These #defines should enable >2GB file support on Posix if the
|
||||
** underlying operating system supports it. If the OS lacks
|
||||
** large file support, or if the OS is windows, these should be no-ops.
|
||||
**
|
||||
** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch
|
||||
** on the compiler command line. This is necessary if you are compiling
|
||||
** on a recent machine (ex: RedHat 7.2) but you want your code to work
|
||||
** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2
|
||||
** without this option, LFS is enable. But LFS does not exist in the kernel
|
||||
** in RedHat 6.0, so the code won't work. Hence, for maximum binary
|
||||
** portability you should omit LFS.
|
||||
**
|
||||
** Similar is true for MacOS. LFS is only supported on MacOS 9 and later.
|
||||
*/
|
||||
#ifndef SQLITE_DISABLE_LFS
|
||||
# define _LARGE_FILE 1
|
||||
# ifndef _FILE_OFFSET_BITS
|
||||
# define _FILE_OFFSET_BITS 64
|
||||
# endif
|
||||
# define _LARGEFILE_SOURCE 1
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Temporary files are named starting with this prefix followed by 16 random
|
||||
** alphanumeric characters, and no file extension. They are stored in the
|
||||
** OS's standard temporary file directory, and are deleted prior to exit.
|
||||
** If sqlite is being embedded in another program, you may wish to change the
|
||||
** prefix to reflect your program's name, so that if your program exits
|
||||
** prematurely, old temporary files can be easily identified. This can be done
|
||||
** using -DTEMP_FILE_PREFIX=myprefix_ on the compiler command line.
|
||||
*/
|
||||
#ifndef TEMP_FILE_PREFIX
|
||||
# define TEMP_FILE_PREFIX "sqlite_"
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Figure out if we are dealing with Unix, Windows or MacOS.
|
||||
**
|
||||
@@ -96,78 +55,31 @@
|
||||
#endif
|
||||
|
||||
/*
|
||||
** A handle for an open file is stored in an OsFile object.
|
||||
** Invoke the appropriate operating-system specific header file.
|
||||
*/
|
||||
#if OS_UNIX
|
||||
# include <sys/types.h>
|
||||
# include <sys/stat.h>
|
||||
# include <fcntl.h>
|
||||
# include <unistd.h>
|
||||
typedef struct OsFile OsFile;
|
||||
struct OsFile {
|
||||
struct openCnt *pOpen; /* Info about all open fd's on this inode */
|
||||
struct lockInfo *pLock; /* Info about locks on this inode */
|
||||
int fd; /* The file descriptor */
|
||||
int locked; /* True if this instance holds the lock */
|
||||
int dirfd; /* File descriptor for the directory */
|
||||
};
|
||||
# define SQLITE_TEMPNAME_SIZE 200
|
||||
# if defined(HAVE_USLEEP) && HAVE_USLEEP
|
||||
# define SQLITE_MIN_SLEEP_MS 1
|
||||
# else
|
||||
# define SQLITE_MIN_SLEEP_MS 1000
|
||||
# endif
|
||||
# include "os_unix.h"
|
||||
#endif
|
||||
|
||||
#if OS_WIN
|
||||
#include <windows.h>
|
||||
#include <winbase.h>
|
||||
typedef struct OsFile OsFile;
|
||||
struct OsFile {
|
||||
HANDLE h; /* Handle for accessing the file */
|
||||
int locked; /* 0: unlocked, <0: write lock, >0: read lock */
|
||||
};
|
||||
# if defined(_MSC_VER) || defined(__BORLANDC__)
|
||||
typedef __int64 off_t;
|
||||
# else
|
||||
# if !defined(_CYGWIN_TYPES_H)
|
||||
typedef long long off_t;
|
||||
# if defined(__MINGW32__)
|
||||
# define _OFF_T_
|
||||
# endif
|
||||
# endif
|
||||
# endif
|
||||
# define SQLITE_TEMPNAME_SIZE (MAX_PATH+50)
|
||||
# define SQLITE_MIN_SLEEP_MS 1
|
||||
# include "os_win.h"
|
||||
#endif
|
||||
|
||||
#if OS_MAC
|
||||
# include <unistd.h>
|
||||
# include <Files.h>
|
||||
typedef struct OsFile OsFile;
|
||||
struct OsFile {
|
||||
SInt16 refNum; /* Data fork/file reference number */
|
||||
SInt16 refNumRF; /* Resource fork reference number (for locking) */
|
||||
int locked; /* 0: unlocked, <0: write lock, >0: read lock */
|
||||
int delOnClose; /* True if file is to be deleted on close */
|
||||
char *pathToDel; /* Name of file to delete on close */
|
||||
};
|
||||
# ifdef _LARGE_FILE
|
||||
typedef SInt64 off_t;
|
||||
# else
|
||||
typedef SInt32 off_t;
|
||||
# endif
|
||||
# define SQLITE_TEMPNAME_SIZE _MAX_PATH
|
||||
# define SQLITE_MIN_SLEEP_MS 17
|
||||
# include "os_mac.h"
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Macros to determine whether the machine is big or little endian,
|
||||
** evaluated at runtime.
|
||||
** Temporary files are named starting with this prefix followed by 16 random
|
||||
** alphanumeric characters, and no file extension. They are stored in the
|
||||
** OS's standard temporary file directory, and are deleted prior to exit.
|
||||
** If sqlite is being embedded in another program, you may wish to change the
|
||||
** prefix to reflect your program's name, so that if your program exits
|
||||
** prematurely, old temporary files can be easily identified. This can be done
|
||||
** using -DTEMP_FILE_PREFIX=myprefix_ on the compiler command line.
|
||||
*/
|
||||
static const int sqlite3_one = 1;
|
||||
#define SQLITE3_BIGENDIAN (*(char *)(&sqlite3_one)==0)
|
||||
#define SQLITE3_LITTLEENDIAN (*(char *)(&sqlite3_one)==1)
|
||||
#ifndef TEMP_FILE_PREFIX
|
||||
# define TEMP_FILE_PREFIX "sqlite_"
|
||||
#endif
|
||||
|
||||
|
||||
int sqlite3OsDelete(const char*);
|
||||
int sqlite3OsFileExists(const char*);
|
||||
@@ -194,9 +106,4 @@ void sqlite3OsEnterMutex(void);
|
||||
void sqlite3OsLeaveMutex(void);
|
||||
char *sqlite3OsFullPathname(const char*);
|
||||
|
||||
|
||||
|
||||
#endif /* _SQLITE_OS_H_ */
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user