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4381 lines (3923 loc) · 133 KB
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/*
** 2004 May 22
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
******************************************************************************
**
** This file contains code that is specific to Windows.
*/
#include "sqliteInt.h"
#if SQLITE_OS_WIN /* This file is used for Windows only */
#ifdef __CYGWIN__
# include <sys/cygwin.h>
#endif
/*
** Include code that is common to all os_*.c files
*/
#include "os_common.h"
/*
** Macro to find the minimum of two numeric values.
*/
#ifndef MIN
# define MIN(x,y) ((x)<(y)?(x):(y))
#endif
/*
** Some Microsoft compilers lack this definition.
*/
#ifndef INVALID_FILE_ATTRIBUTES
# define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif
#ifndef FILE_FLAG_MASK
# define FILE_FLAG_MASK (0xFF3C0000)
#endif
#ifndef FILE_ATTRIBUTE_MASK
# define FILE_ATTRIBUTE_MASK (0x0003FFF7)
#endif
#ifndef SQLITE_OMIT_WAL
/* Forward references */
typedef struct winShm winShm; /* A connection to shared-memory */
typedef struct winShmNode winShmNode; /* A region of shared-memory */
#endif
/*
** WinCE lacks native support for file locking so we have to fake it
** with some code of our own.
*/
#if SQLITE_OS_WINCE
typedef struct winceLock {
int nReaders; /* Number of reader locks obtained */
BOOL bPending; /* Indicates a pending lock has been obtained */
BOOL bReserved; /* Indicates a reserved lock has been obtained */
BOOL bExclusive; /* Indicates an exclusive lock has been obtained */
} winceLock;
#endif
/*
** The winFile structure is a subclass of sqlite3_file* specific to the win32
** portability layer.
*/
typedef struct winFile winFile;
struct winFile {
const sqlite3_io_methods *pMethod; /*** Must be first ***/
sqlite3_vfs *pVfs; /* The VFS used to open this file */
HANDLE h; /* Handle for accessing the file */
u8 locktype; /* Type of lock currently held on this file */
short sharedLockByte; /* Randomly chosen byte used as a shared lock */
u8 ctrlFlags; /* Flags. See WINFILE_* below */
DWORD lastErrno; /* The Windows errno from the last I/O error */
#ifndef SQLITE_OMIT_WAL
winShm *pShm; /* Instance of shared memory on this file */
#endif
const char *zPath; /* Full pathname of this file */
int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */
#if SQLITE_OS_WINCE
LPWSTR zDeleteOnClose; /* Name of file to delete when closing */
HANDLE hMutex; /* Mutex used to control access to shared lock */
HANDLE hShared; /* Shared memory segment used for locking */
winceLock local; /* Locks obtained by this instance of winFile */
winceLock *shared; /* Global shared lock memory for the file */
#endif
};
/*
** Allowed values for winFile.ctrlFlags
*/
#define WINFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */
#define WINFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
/*
* The size of the buffer used by sqlite3_win32_write_debug().
*/
#ifndef SQLITE_WIN32_DBG_BUF_SIZE
# define SQLITE_WIN32_DBG_BUF_SIZE ((int)(4096-sizeof(DWORD)))
#endif
/*
* The value used with sqlite3_win32_set_directory() to specify that
* the data directory should be changed.
*/
#ifndef SQLITE_WIN32_DATA_DIRECTORY_TYPE
# define SQLITE_WIN32_DATA_DIRECTORY_TYPE (1)
#endif
/*
* The value used with sqlite3_win32_set_directory() to specify that
* the temporary directory should be changed.
*/
#ifndef SQLITE_WIN32_TEMP_DIRECTORY_TYPE
# define SQLITE_WIN32_TEMP_DIRECTORY_TYPE (2)
#endif
/*
* If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the
* various Win32 API heap functions instead of our own.
*/
#ifdef SQLITE_WIN32_MALLOC
/*
* If this is non-zero, an isolated heap will be created by the native Win32
* allocator subsystem; otherwise, the default process heap will be used. This
* setting has no effect when compiling for WinRT. By default, this is enabled
* and an isolated heap will be created to store all allocated data.
*
******************************************************************************
* WARNING: It is important to note that when this setting is non-zero and the
* winMemShutdown function is called (e.g. by the sqlite3_shutdown
* function), all data that was allocated using the isolated heap will
* be freed immediately and any attempt to access any of that freed
* data will almost certainly result in an immediate access violation.
******************************************************************************
*/
#ifndef SQLITE_WIN32_HEAP_CREATE
# define SQLITE_WIN32_HEAP_CREATE (TRUE)
#endif
/*
* The initial size of the Win32-specific heap. This value may be zero.
*/
#ifndef SQLITE_WIN32_HEAP_INIT_SIZE
# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_DEFAULT_CACHE_SIZE) * \
(SQLITE_DEFAULT_PAGE_SIZE) + 4194304)
#endif
/*
* The maximum size of the Win32-specific heap. This value may be zero.
*/
#ifndef SQLITE_WIN32_HEAP_MAX_SIZE
# define SQLITE_WIN32_HEAP_MAX_SIZE (0)
#endif
/*
* The extra flags to use in calls to the Win32 heap APIs. This value may be
* zero for the default behavior.
*/
#ifndef SQLITE_WIN32_HEAP_FLAGS
# define SQLITE_WIN32_HEAP_FLAGS (0)
#endif
/*
** The winMemData structure stores information required by the Win32-specific
** sqlite3_mem_methods implementation.
*/
typedef struct winMemData winMemData;
struct winMemData {
#ifndef NDEBUG
u32 magic; /* Magic number to detect structure corruption. */
#endif
HANDLE hHeap; /* The handle to our heap. */
BOOL bOwned; /* Do we own the heap (i.e. destroy it on shutdown)? */
};
#ifndef NDEBUG
#define WINMEM_MAGIC 0x42b2830b
#endif
static struct winMemData win_mem_data = {
#ifndef NDEBUG
WINMEM_MAGIC,
#endif
NULL, FALSE
};
#ifndef NDEBUG
#define winMemAssertMagic() assert( win_mem_data.magic==WINMEM_MAGIC )
#else
#define winMemAssertMagic()
#endif
#define winMemGetHeap() win_mem_data.hHeap
static void *winMemMalloc(int nBytes);
static void winMemFree(void *pPrior);
static void *winMemRealloc(void *pPrior, int nBytes);
static int winMemSize(void *p);
static int winMemRoundup(int n);
static int winMemInit(void *pAppData);
static void winMemShutdown(void *pAppData);
const sqlite3_mem_methods *sqlite3MemGetWin32(void);
#endif /* SQLITE_WIN32_MALLOC */
/*
** The following variable is (normally) set once and never changes
** thereafter. It records whether the operating system is Win9x
** or WinNT.
**
** 0: Operating system unknown.
** 1: Operating system is Win9x.
** 2: Operating system is WinNT.
**
** In order to facilitate testing on a WinNT system, the test fixture
** can manually set this value to 1 to emulate Win98 behavior.
*/
#ifdef SQLITE_TEST
int sqlite3_os_type = 0;
#else
static int sqlite3_os_type = 0;
#endif
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
# define SQLITE_WIN32_HAS_ANSI
#endif
#if SQLITE_OS_WINCE || SQLITE_OS_WINNT || SQLITE_OS_WINRT
# define SQLITE_WIN32_HAS_WIDE
#endif
#ifndef SYSCALL
# define SYSCALL sqlite3_syscall_ptr
#endif
/*
** This function is not available on Windows CE or WinRT.
*/
#if SQLITE_OS_WINCE || SQLITE_OS_WINRT
# define osAreFileApisANSI() 1
#endif
/*
** Many system calls are accessed through pointer-to-functions so that
** they may be overridden at runtime to facilitate fault injection during
** testing and sandboxing. The following array holds the names and pointers
** to all overrideable system calls.
*/
static struct win_syscall {
const char *zName; /* Name of the sytem call */
sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
sqlite3_syscall_ptr pDefault; /* Default value */
} aSyscall[] = {
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
{ "AreFileApisANSI", (SYSCALL)AreFileApisANSI, 0 },
#else
{ "AreFileApisANSI", (SYSCALL)0, 0 },
#endif
#ifndef osAreFileApisANSI
#define osAreFileApisANSI ((BOOL(WINAPI*)(VOID))aSyscall[0].pCurrent)
#endif
#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
{ "CharLowerW", (SYSCALL)CharLowerW, 0 },
#else
{ "CharLowerW", (SYSCALL)0, 0 },
#endif
#define osCharLowerW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[1].pCurrent)
#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
{ "CharUpperW", (SYSCALL)CharUpperW, 0 },
#else
{ "CharUpperW", (SYSCALL)0, 0 },
#endif
#define osCharUpperW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[2].pCurrent)
{ "CloseHandle", (SYSCALL)CloseHandle, 0 },
#define osCloseHandle ((BOOL(WINAPI*)(HANDLE))aSyscall[3].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "CreateFileA", (SYSCALL)CreateFileA, 0 },
#else
{ "CreateFileA", (SYSCALL)0, 0 },
#endif
#define osCreateFileA ((HANDLE(WINAPI*)(LPCSTR,DWORD,DWORD, \
LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[4].pCurrent)
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "CreateFileW", (SYSCALL)CreateFileW, 0 },
#else
{ "CreateFileW", (SYSCALL)0, 0 },
#endif
#define osCreateFileW ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD, \
LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent)
#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
!defined(SQLITE_OMIT_WAL))
{ "CreateFileMappingW", (SYSCALL)CreateFileMappingW, 0 },
#else
{ "CreateFileMappingW", (SYSCALL)0, 0 },
#endif
#define osCreateFileMappingW ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
DWORD,DWORD,DWORD,LPCWSTR))aSyscall[6].pCurrent)
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "CreateMutexW", (SYSCALL)CreateMutexW, 0 },
#else
{ "CreateMutexW", (SYSCALL)0, 0 },
#endif
#define osCreateMutexW ((HANDLE(WINAPI*)(LPSECURITY_ATTRIBUTES,BOOL, \
LPCWSTR))aSyscall[7].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "DeleteFileA", (SYSCALL)DeleteFileA, 0 },
#else
{ "DeleteFileA", (SYSCALL)0, 0 },
#endif
#define osDeleteFileA ((BOOL(WINAPI*)(LPCSTR))aSyscall[8].pCurrent)
#if defined(SQLITE_WIN32_HAS_WIDE)
{ "DeleteFileW", (SYSCALL)DeleteFileW, 0 },
#else
{ "DeleteFileW", (SYSCALL)0, 0 },
#endif
#define osDeleteFileW ((BOOL(WINAPI*)(LPCWSTR))aSyscall[9].pCurrent)
#if SQLITE_OS_WINCE
{ "FileTimeToLocalFileTime", (SYSCALL)FileTimeToLocalFileTime, 0 },
#else
{ "FileTimeToLocalFileTime", (SYSCALL)0, 0 },
#endif
#define osFileTimeToLocalFileTime ((BOOL(WINAPI*)(CONST FILETIME*, \
LPFILETIME))aSyscall[10].pCurrent)
#if SQLITE_OS_WINCE
{ "FileTimeToSystemTime", (SYSCALL)FileTimeToSystemTime, 0 },
#else
{ "FileTimeToSystemTime", (SYSCALL)0, 0 },
#endif
#define osFileTimeToSystemTime ((BOOL(WINAPI*)(CONST FILETIME*, \
LPSYSTEMTIME))aSyscall[11].pCurrent)
{ "FlushFileBuffers", (SYSCALL)FlushFileBuffers, 0 },
#define osFlushFileBuffers ((BOOL(WINAPI*)(HANDLE))aSyscall[12].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "FormatMessageA", (SYSCALL)FormatMessageA, 0 },
#else
{ "FormatMessageA", (SYSCALL)0, 0 },
#endif
#define osFormatMessageA ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPSTR, \
DWORD,va_list*))aSyscall[13].pCurrent)
#if defined(SQLITE_WIN32_HAS_WIDE)
{ "FormatMessageW", (SYSCALL)FormatMessageW, 0 },
#else
{ "FormatMessageW", (SYSCALL)0, 0 },
#endif
#define osFormatMessageW ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPWSTR, \
DWORD,va_list*))aSyscall[14].pCurrent)
{ "FreeLibrary", (SYSCALL)FreeLibrary, 0 },
#define osFreeLibrary ((BOOL(WINAPI*)(HMODULE))aSyscall[15].pCurrent)
{ "GetCurrentProcessId", (SYSCALL)GetCurrentProcessId, 0 },
#define osGetCurrentProcessId ((DWORD(WINAPI*)(VOID))aSyscall[16].pCurrent)
#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
{ "GetDiskFreeSpaceA", (SYSCALL)GetDiskFreeSpaceA, 0 },
#else
{ "GetDiskFreeSpaceA", (SYSCALL)0, 0 },
#endif
#define osGetDiskFreeSpaceA ((BOOL(WINAPI*)(LPCSTR,LPDWORD,LPDWORD,LPDWORD, \
LPDWORD))aSyscall[17].pCurrent)
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "GetDiskFreeSpaceW", (SYSCALL)GetDiskFreeSpaceW, 0 },
#else
{ "GetDiskFreeSpaceW", (SYSCALL)0, 0 },
#endif
#define osGetDiskFreeSpaceW ((BOOL(WINAPI*)(LPCWSTR,LPDWORD,LPDWORD,LPDWORD, \
LPDWORD))aSyscall[18].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "GetFileAttributesA", (SYSCALL)GetFileAttributesA, 0 },
#else
{ "GetFileAttributesA", (SYSCALL)0, 0 },
#endif
#define osGetFileAttributesA ((DWORD(WINAPI*)(LPCSTR))aSyscall[19].pCurrent)
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "GetFileAttributesW", (SYSCALL)GetFileAttributesW, 0 },
#else
{ "GetFileAttributesW", (SYSCALL)0, 0 },
#endif
#define osGetFileAttributesW ((DWORD(WINAPI*)(LPCWSTR))aSyscall[20].pCurrent)
#if defined(SQLITE_WIN32_HAS_WIDE)
{ "GetFileAttributesExW", (SYSCALL)GetFileAttributesExW, 0 },
#else
{ "GetFileAttributesExW", (SYSCALL)0, 0 },
#endif
#define osGetFileAttributesExW ((BOOL(WINAPI*)(LPCWSTR,GET_FILEEX_INFO_LEVELS, \
LPVOID))aSyscall[21].pCurrent)
#if !SQLITE_OS_WINRT
{ "GetFileSize", (SYSCALL)GetFileSize, 0 },
#else
{ "GetFileSize", (SYSCALL)0, 0 },
#endif
#define osGetFileSize ((DWORD(WINAPI*)(HANDLE,LPDWORD))aSyscall[22].pCurrent)
#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
{ "GetFullPathNameA", (SYSCALL)GetFullPathNameA, 0 },
#else
{ "GetFullPathNameA", (SYSCALL)0, 0 },
#endif
#define osGetFullPathNameA ((DWORD(WINAPI*)(LPCSTR,DWORD,LPSTR, \
LPSTR*))aSyscall[23].pCurrent)
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "GetFullPathNameW", (SYSCALL)GetFullPathNameW, 0 },
#else
{ "GetFullPathNameW", (SYSCALL)0, 0 },
#endif
#define osGetFullPathNameW ((DWORD(WINAPI*)(LPCWSTR,DWORD,LPWSTR, \
LPWSTR*))aSyscall[24].pCurrent)
{ "GetLastError", (SYSCALL)GetLastError, 0 },
#define osGetLastError ((DWORD(WINAPI*)(VOID))aSyscall[25].pCurrent)
#if SQLITE_OS_WINCE
/* The GetProcAddressA() routine is only available on Windows CE. */
{ "GetProcAddressA", (SYSCALL)GetProcAddressA, 0 },
#else
/* All other Windows platforms expect GetProcAddress() to take
** an ANSI string regardless of the _UNICODE setting */
{ "GetProcAddressA", (SYSCALL)GetProcAddress, 0 },
#endif
#define osGetProcAddressA ((FARPROC(WINAPI*)(HMODULE, \
LPCSTR))aSyscall[26].pCurrent)
#if !SQLITE_OS_WINRT
{ "GetSystemInfo", (SYSCALL)GetSystemInfo, 0 },
#else
{ "GetSystemInfo", (SYSCALL)0, 0 },
#endif
#define osGetSystemInfo ((VOID(WINAPI*)(LPSYSTEM_INFO))aSyscall[27].pCurrent)
{ "GetSystemTime", (SYSCALL)GetSystemTime, 0 },
#define osGetSystemTime ((VOID(WINAPI*)(LPSYSTEMTIME))aSyscall[28].pCurrent)
#if !SQLITE_OS_WINCE
{ "GetSystemTimeAsFileTime", (SYSCALL)GetSystemTimeAsFileTime, 0 },
#else
{ "GetSystemTimeAsFileTime", (SYSCALL)0, 0 },
#endif
#define osGetSystemTimeAsFileTime ((VOID(WINAPI*)( \
LPFILETIME))aSyscall[29].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "GetTempPathA", (SYSCALL)GetTempPathA, 0 },
#else
{ "GetTempPathA", (SYSCALL)0, 0 },
#endif
#define osGetTempPathA ((DWORD(WINAPI*)(DWORD,LPSTR))aSyscall[30].pCurrent)
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "GetTempPathW", (SYSCALL)GetTempPathW, 0 },
#else
{ "GetTempPathW", (SYSCALL)0, 0 },
#endif
#define osGetTempPathW ((DWORD(WINAPI*)(DWORD,LPWSTR))aSyscall[31].pCurrent)
#if !SQLITE_OS_WINRT
{ "GetTickCount", (SYSCALL)GetTickCount, 0 },
#else
{ "GetTickCount", (SYSCALL)0, 0 },
#endif
#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[32].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "GetVersionExA", (SYSCALL)GetVersionExA, 0 },
#else
{ "GetVersionExA", (SYSCALL)0, 0 },
#endif
#define osGetVersionExA ((BOOL(WINAPI*)( \
LPOSVERSIONINFOA))aSyscall[33].pCurrent)
{ "HeapAlloc", (SYSCALL)HeapAlloc, 0 },
#define osHeapAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD, \
SIZE_T))aSyscall[34].pCurrent)
#if !SQLITE_OS_WINRT
{ "HeapCreate", (SYSCALL)HeapCreate, 0 },
#else
{ "HeapCreate", (SYSCALL)0, 0 },
#endif
#define osHeapCreate ((HANDLE(WINAPI*)(DWORD,SIZE_T, \
SIZE_T))aSyscall[35].pCurrent)
#if !SQLITE_OS_WINRT
{ "HeapDestroy", (SYSCALL)HeapDestroy, 0 },
#else
{ "HeapDestroy", (SYSCALL)0, 0 },
#endif
#define osHeapDestroy ((BOOL(WINAPI*)(HANDLE))aSyscall[36].pCurrent)
{ "HeapFree", (SYSCALL)HeapFree, 0 },
#define osHeapFree ((BOOL(WINAPI*)(HANDLE,DWORD,LPVOID))aSyscall[37].pCurrent)
{ "HeapReAlloc", (SYSCALL)HeapReAlloc, 0 },
#define osHeapReAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD,LPVOID, \
SIZE_T))aSyscall[38].pCurrent)
{ "HeapSize", (SYSCALL)HeapSize, 0 },
#define osHeapSize ((SIZE_T(WINAPI*)(HANDLE,DWORD, \
LPCVOID))aSyscall[39].pCurrent)
#if !SQLITE_OS_WINRT
{ "HeapValidate", (SYSCALL)HeapValidate, 0 },
#else
{ "HeapValidate", (SYSCALL)0, 0 },
#endif
#define osHeapValidate ((BOOL(WINAPI*)(HANDLE,DWORD, \
LPCVOID))aSyscall[40].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "LoadLibraryA", (SYSCALL)LoadLibraryA, 0 },
#else
{ "LoadLibraryA", (SYSCALL)0, 0 },
#endif
#define osLoadLibraryA ((HMODULE(WINAPI*)(LPCSTR))aSyscall[41].pCurrent)
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
{ "LoadLibraryW", (SYSCALL)LoadLibraryW, 0 },
#else
{ "LoadLibraryW", (SYSCALL)0, 0 },
#endif
#define osLoadLibraryW ((HMODULE(WINAPI*)(LPCWSTR))aSyscall[42].pCurrent)
#if !SQLITE_OS_WINRT
{ "LocalFree", (SYSCALL)LocalFree, 0 },
#else
{ "LocalFree", (SYSCALL)0, 0 },
#endif
#define osLocalFree ((HLOCAL(WINAPI*)(HLOCAL))aSyscall[43].pCurrent)
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
{ "LockFile", (SYSCALL)LockFile, 0 },
#else
{ "LockFile", (SYSCALL)0, 0 },
#endif
#ifndef osLockFile
#define osLockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
DWORD))aSyscall[44].pCurrent)
#endif
#if !SQLITE_OS_WINCE
{ "LockFileEx", (SYSCALL)LockFileEx, 0 },
#else
{ "LockFileEx", (SYSCALL)0, 0 },
#endif
#ifndef osLockFileEx
#define osLockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD,DWORD, \
LPOVERLAPPED))aSyscall[45].pCurrent)
#endif
#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL))
{ "MapViewOfFile", (SYSCALL)MapViewOfFile, 0 },
#else
{ "MapViewOfFile", (SYSCALL)0, 0 },
#endif
#define osMapViewOfFile ((LPVOID(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
SIZE_T))aSyscall[46].pCurrent)
{ "MultiByteToWideChar", (SYSCALL)MultiByteToWideChar, 0 },
#define osMultiByteToWideChar ((int(WINAPI*)(UINT,DWORD,LPCSTR,int,LPWSTR, \
int))aSyscall[47].pCurrent)
{ "QueryPerformanceCounter", (SYSCALL)QueryPerformanceCounter, 0 },
#define osQueryPerformanceCounter ((BOOL(WINAPI*)( \
LARGE_INTEGER*))aSyscall[48].pCurrent)
{ "ReadFile", (SYSCALL)ReadFile, 0 },
#define osReadFile ((BOOL(WINAPI*)(HANDLE,LPVOID,DWORD,LPDWORD, \
LPOVERLAPPED))aSyscall[49].pCurrent)
{ "SetEndOfFile", (SYSCALL)SetEndOfFile, 0 },
#define osSetEndOfFile ((BOOL(WINAPI*)(HANDLE))aSyscall[50].pCurrent)
#if !SQLITE_OS_WINRT
{ "SetFilePointer", (SYSCALL)SetFilePointer, 0 },
#else
{ "SetFilePointer", (SYSCALL)0, 0 },
#endif
#define osSetFilePointer ((DWORD(WINAPI*)(HANDLE,LONG,PLONG, \
DWORD))aSyscall[51].pCurrent)
#if !SQLITE_OS_WINRT
{ "Sleep", (SYSCALL)Sleep, 0 },
#else
{ "Sleep", (SYSCALL)0, 0 },
#endif
#define osSleep ((VOID(WINAPI*)(DWORD))aSyscall[52].pCurrent)
{ "SystemTimeToFileTime", (SYSCALL)SystemTimeToFileTime, 0 },
#define osSystemTimeToFileTime ((BOOL(WINAPI*)(CONST SYSTEMTIME*, \
LPFILETIME))aSyscall[53].pCurrent)
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
{ "UnlockFile", (SYSCALL)UnlockFile, 0 },
#else
{ "UnlockFile", (SYSCALL)0, 0 },
#endif
#ifndef osUnlockFile
#define osUnlockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
DWORD))aSyscall[54].pCurrent)
#endif
#if !SQLITE_OS_WINCE
{ "UnlockFileEx", (SYSCALL)UnlockFileEx, 0 },
#else
{ "UnlockFileEx", (SYSCALL)0, 0 },
#endif
#define osUnlockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
LPOVERLAPPED))aSyscall[55].pCurrent)
#if SQLITE_OS_WINCE || !defined(SQLITE_OMIT_WAL)
{ "UnmapViewOfFile", (SYSCALL)UnmapViewOfFile, 0 },
#else
{ "UnmapViewOfFile", (SYSCALL)0, 0 },
#endif
#define osUnmapViewOfFile ((BOOL(WINAPI*)(LPCVOID))aSyscall[56].pCurrent)
{ "WideCharToMultiByte", (SYSCALL)WideCharToMultiByte, 0 },
#define osWideCharToMultiByte ((int(WINAPI*)(UINT,DWORD,LPCWSTR,int,LPSTR,int, \
LPCSTR,LPBOOL))aSyscall[57].pCurrent)
{ "WriteFile", (SYSCALL)WriteFile, 0 },
#define osWriteFile ((BOOL(WINAPI*)(HANDLE,LPCVOID,DWORD,LPDWORD, \
LPOVERLAPPED))aSyscall[58].pCurrent)
#if SQLITE_OS_WINRT
{ "CreateEventExW", (SYSCALL)CreateEventExW, 0 },
#else
{ "CreateEventExW", (SYSCALL)0, 0 },
#endif
#define osCreateEventExW ((HANDLE(WINAPI*)(LPSECURITY_ATTRIBUTES,LPCWSTR, \
DWORD,DWORD))aSyscall[59].pCurrent)
#if !SQLITE_OS_WINRT
{ "WaitForSingleObject", (SYSCALL)WaitForSingleObject, 0 },
#else
{ "WaitForSingleObject", (SYSCALL)0, 0 },
#endif
#define osWaitForSingleObject ((DWORD(WINAPI*)(HANDLE, \
DWORD))aSyscall[60].pCurrent)
#if SQLITE_OS_WINRT
{ "WaitForSingleObjectEx", (SYSCALL)WaitForSingleObjectEx, 0 },
#else
{ "WaitForSingleObjectEx", (SYSCALL)0, 0 },
#endif
#define osWaitForSingleObjectEx ((DWORD(WINAPI*)(HANDLE,DWORD, \
BOOL))aSyscall[61].pCurrent)
#if SQLITE_OS_WINRT
{ "SetFilePointerEx", (SYSCALL)SetFilePointerEx, 0 },
#else
{ "SetFilePointerEx", (SYSCALL)0, 0 },
#endif
#define osSetFilePointerEx ((BOOL(WINAPI*)(HANDLE,LARGE_INTEGER, \
PLARGE_INTEGER,DWORD))aSyscall[62].pCurrent)
#if SQLITE_OS_WINRT
{ "GetFileInformationByHandleEx", (SYSCALL)GetFileInformationByHandleEx, 0 },
#else
{ "GetFileInformationByHandleEx", (SYSCALL)0, 0 },
#endif
#define osGetFileInformationByHandleEx ((BOOL(WINAPI*)(HANDLE, \
FILE_INFO_BY_HANDLE_CLASS,LPVOID,DWORD))aSyscall[63].pCurrent)
#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL)
{ "MapViewOfFileFromApp", (SYSCALL)MapViewOfFileFromApp, 0 },
#else
{ "MapViewOfFileFromApp", (SYSCALL)0, 0 },
#endif
#define osMapViewOfFileFromApp ((LPVOID(WINAPI*)(HANDLE,ULONG,ULONG64, \
SIZE_T))aSyscall[64].pCurrent)
#if SQLITE_OS_WINRT
{ "CreateFile2", (SYSCALL)CreateFile2, 0 },
#else
{ "CreateFile2", (SYSCALL)0, 0 },
#endif
#define osCreateFile2 ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD,DWORD, \
LPCREATEFILE2_EXTENDED_PARAMETERS))aSyscall[65].pCurrent)
#if SQLITE_OS_WINRT
{ "LoadPackagedLibrary", (SYSCALL)LoadPackagedLibrary, 0 },
#else
{ "LoadPackagedLibrary", (SYSCALL)0, 0 },
#endif
#define osLoadPackagedLibrary ((HMODULE(WINAPI*)(LPCWSTR, \
DWORD))aSyscall[66].pCurrent)
#if SQLITE_OS_WINRT
{ "GetTickCount64", (SYSCALL)GetTickCount64, 0 },
#else
{ "GetTickCount64", (SYSCALL)0, 0 },
#endif
#define osGetTickCount64 ((ULONGLONG(WINAPI*)(VOID))aSyscall[67].pCurrent)
#if SQLITE_OS_WINRT
{ "GetNativeSystemInfo", (SYSCALL)GetNativeSystemInfo, 0 },
#else
{ "GetNativeSystemInfo", (SYSCALL)0, 0 },
#endif
#define osGetNativeSystemInfo ((VOID(WINAPI*)( \
LPSYSTEM_INFO))aSyscall[68].pCurrent)
#if defined(SQLITE_WIN32_HAS_ANSI)
{ "OutputDebugStringA", (SYSCALL)OutputDebugStringA, 0 },
#else
{ "OutputDebugStringA", (SYSCALL)0, 0 },
#endif
#define osOutputDebugStringA ((VOID(WINAPI*)(LPCSTR))aSyscall[69].pCurrent)
#if defined(SQLITE_WIN32_HAS_WIDE)
{ "OutputDebugStringW", (SYSCALL)OutputDebugStringW, 0 },
#else
{ "OutputDebugStringW", (SYSCALL)0, 0 },
#endif
#define osOutputDebugStringW ((VOID(WINAPI*)(LPCWSTR))aSyscall[70].pCurrent)
{ "GetProcessHeap", (SYSCALL)GetProcessHeap, 0 },
#define osGetProcessHeap ((HANDLE(WINAPI*)(VOID))aSyscall[71].pCurrent)
#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL)
{ "CreateFileMappingFromApp", (SYSCALL)CreateFileMappingFromApp, 0 },
#else
{ "CreateFileMappingFromApp", (SYSCALL)0, 0 },
#endif
#define osCreateFileMappingFromApp ((HANDLE(WINAPI*)(HANDLE, \
LPSECURITY_ATTRIBUTES,ULONG,ULONG64,LPCWSTR))aSyscall[72].pCurrent)
}; /* End of the overrideable system calls */
/*
** This is the xSetSystemCall() method of sqlite3_vfs for all of the
** "win32" VFSes. Return SQLITE_OK opon successfully updating the
** system call pointer, or SQLITE_NOTFOUND if there is no configurable
** system call named zName.
*/
static int winSetSystemCall(
sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */
const char *zName, /* Name of system call to override */
sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */
){
unsigned int i;
int rc = SQLITE_NOTFOUND;
UNUSED_PARAMETER(pNotUsed);
if( zName==0 ){
/* If no zName is given, restore all system calls to their default
** settings and return NULL
*/
rc = SQLITE_OK;
for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
if( aSyscall[i].pDefault ){
aSyscall[i].pCurrent = aSyscall[i].pDefault;
}
}
}else{
/* If zName is specified, operate on only the one system call
** specified.
*/
for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
if( strcmp(zName, aSyscall[i].zName)==0 ){
if( aSyscall[i].pDefault==0 ){
aSyscall[i].pDefault = aSyscall[i].pCurrent;
}
rc = SQLITE_OK;
if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;
aSyscall[i].pCurrent = pNewFunc;
break;
}
}
}
return rc;
}
/*
** Return the value of a system call. Return NULL if zName is not a
** recognized system call name. NULL is also returned if the system call
** is currently undefined.
*/
static sqlite3_syscall_ptr winGetSystemCall(
sqlite3_vfs *pNotUsed,
const char *zName
){
unsigned int i;
UNUSED_PARAMETER(pNotUsed);
for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;
}
return 0;
}
/*
** Return the name of the first system call after zName. If zName==NULL
** then return the name of the first system call. Return NULL if zName
** is the last system call or if zName is not the name of a valid
** system call.
*/
static const char *winNextSystemCall(sqlite3_vfs *p, const char *zName){
int i = -1;
UNUSED_PARAMETER(p);
if( zName ){
for(i=0; i<ArraySize(aSyscall)-1; i++){
if( strcmp(zName, aSyscall[i].zName)==0 ) break;
}
}
for(i++; i<ArraySize(aSyscall); i++){
if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;
}
return 0;
}
/*
** This function outputs the specified (ANSI) string to the Win32 debugger
** (if available).
*/
void sqlite3_win32_write_debug(char *zBuf, int nBuf){
char zDbgBuf[SQLITE_WIN32_DBG_BUF_SIZE];
int nMin = MIN(nBuf, (SQLITE_WIN32_DBG_BUF_SIZE - 1)); /* may be negative. */
if( nMin<-1 ) nMin = -1; /* all negative values become -1. */
assert( nMin==-1 || nMin==0 || nMin<SQLITE_WIN32_DBG_BUF_SIZE );
#if defined(SQLITE_WIN32_HAS_ANSI)
if( nMin>0 ){
memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
memcpy(zDbgBuf, zBuf, nMin);
osOutputDebugStringA(zDbgBuf);
}else{
osOutputDebugStringA(zBuf);
}
#elif defined(SQLITE_WIN32_HAS_WIDE)
memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
if ( osMultiByteToWideChar(
osAreFileApisANSI() ? CP_ACP : CP_OEMCP, 0, zBuf,
nMin, (LPWSTR)zDbgBuf, SQLITE_WIN32_DBG_BUF_SIZE/sizeof(WCHAR))<=0 ){
return;
}
osOutputDebugStringW((LPCWSTR)zDbgBuf);
#else
if( nMin>0 ){
memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
memcpy(zDbgBuf, zBuf, nMin);
fprintf(stderr, "%s", zDbgBuf);
}else{
fprintf(stderr, "%s", zBuf);
}
#endif
}
/*
** The following routine suspends the current thread for at least ms
** milliseconds. This is equivalent to the Win32 Sleep() interface.
*/
#if SQLITE_OS_WINRT
static HANDLE sleepObj = NULL;
#endif
void sqlite3_win32_sleep(DWORD milliseconds){
#if SQLITE_OS_WINRT
if ( sleepObj==NULL ){
sleepObj = osCreateEventExW(NULL, NULL, CREATE_EVENT_MANUAL_RESET,
SYNCHRONIZE);
}
assert( sleepObj!=NULL );
osWaitForSingleObjectEx(sleepObj, milliseconds, FALSE);
#else
osSleep(milliseconds);
#endif
}
/*
** Return true (non-zero) if we are running under WinNT, Win2K, WinXP,
** or WinCE. Return false (zero) for Win95, Win98, or WinME.
**
** Here is an interesting observation: Win95, Win98, and WinME lack
** the LockFileEx() API. But we can still statically link against that
** API as long as we don't call it when running Win95/98/ME. A call to
** this routine is used to determine if the host is Win95/98/ME or
** WinNT/2K/XP so that we will know whether or not we can safely call
** the LockFileEx() API.
*/
#if SQLITE_OS_WINCE || SQLITE_OS_WINRT
# define isNT() (1)
#else
static int isNT(void){
if( sqlite3_os_type==0 ){
OSVERSIONINFOA sInfo;
sInfo.dwOSVersionInfoSize = sizeof(sInfo);
osGetVersionExA(&sInfo);
sqlite3_os_type = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1;
}
return sqlite3_os_type==2;
}
#endif /* SQLITE_OS_WINCE */
#ifdef SQLITE_WIN32_MALLOC
/*
** Allocate nBytes of memory.