diff options
Diffstat (limited to 'src/os.h')
| -rw-r--r-- | src/os.h | 123 |
1 files changed, 15 insertions, 108 deletions
@@ -18,47 +18,6 @@ #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. ** ** N.B. MacOS means Mac Classic (or Carbon). Treat Darwin (OS X) as Unix. @@ -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_ */ - - - |