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1010 lines
22 KiB
1010 lines
22 KiB
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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main.c
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Abstract:
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Main source file of migutil.dll
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Author:
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Jim Schmidt (jimschm) 01-Aug-1996
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Revision History:
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jimschm 23-Sep-1998 Start thread
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marcw 23-Sep-1998 Locale fix
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jimschm 03-Nov-1997 Added TextAlloc routines
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marcw 22-Jul-1997 Added IS<platform> functions.
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--*/
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#include "pch.h"
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#include "migutilp.h"
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#include "locale.h"
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#include <mbctype.h>
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//#define DEBUG_ALL_FILES
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OSVERSIONINFOA g_OsInfo;
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extern OUR_CRITICAL_SECTION g_DebugMsgCs;
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#define TEXT_GROWTH_SIZE 65536
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//
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// Out of memory string -- loaded at initialization
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//
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PCSTR g_OutOfMemoryString = NULL;
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PCSTR g_OutOfMemoryRetry = NULL;
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PCSTR g_ErrorString = NULL;
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HWND g_OutOfMemoryParentWnd;
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//
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// Flag used for MBCS string functions, which perform faster if the code page is NOT MBCS
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//
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BOOL g_IsMbcp = FALSE;
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//
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// OS-dependent flags for MultiByteToWideChar
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//
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DWORD g_MigutilWCToMBFlags = 0;
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//
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// A dynamic string. Among other things, this list can hold lists of imports
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// as they are read out Win32 executables.
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//
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//DYNSTRING dynImp;
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//
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// g_ShortTermAllocTable is the default table used for resource string
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// management. New strings are allocated from the table.
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//
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// Allocation tables are very simple ways to store strings loaded in from
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// the exe image. The loaded string is copied into the table and kept
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// around until it is explicitly freed. Multiple attempts at getting the
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// same resource string return the same string, inc'ing a use counter.
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//
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// g_LastAllocTable is a temporary holder for the wrapper APIs that
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// do not require the caller to supply the alloc table. DO NOT ALTER!
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//
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// g_OutOfMemoryTable is the table used to hold out-of-memory text. It
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// is loaded up at init time and is kept in memory for the whole time
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// migutil is in use, so out-of-memory messages can always be displayed.
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//
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PGROWBUFFER g_ShortTermAllocTable;
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PGROWBUFFER g_LastAllocTable;
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PGROWBUFFER g_OutOfMemoryTable;
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//
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// We make sure the message APIs (GetStringResource, ParseMessageID, etc)
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// are thread-safe
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//
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OUR_CRITICAL_SECTION g_MessageCs;
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BOOL fInitedMessageCs = FALSE;
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//
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// The PoolMem routines must also be thread-safe
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//
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CRITICAL_SECTION g_PoolMemCs;
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BOOL fInitedPoolMemCs = FALSE;
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//
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// MemAlloc critical section
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//
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CRITICAL_SECTION g_MemAllocCs;
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BOOL fInitedMemAllocCs = FALSE;
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//
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// The following pools are used for text management. g_RegistryApiPool is
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// for reg.c, g_PathsPool is for the JoinPaths/DuplicatePath/etc routines,
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// and g_TextPool is for AllocText, DupText, etc.
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//
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POOLHANDLE g_RegistryApiPool;
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POOLHANDLE g_PathsPool;
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POOLHANDLE g_TextPool;
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//
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// PC98 settings
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//
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BOOL g_IsPc98;
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static CHAR g_BootDrivePathBufA[8];
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static WCHAR g_BootDrivePathBufW[4];
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PCSTR g_BootDrivePathA;
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PCWSTR g_BootDrivePathW;
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static CHAR g_BootDriveBufA[6];
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static WCHAR g_BootDriveBufW[3];
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PCSTR g_BootDriveA;
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PCWSTR g_BootDriveW;
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CHAR g_BootDriveLetterA;
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WCHAR g_BootDriveLetterW;
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//
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// Implementation
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//
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BOOL
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WINAPI
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MigUtil_Entry (
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HINSTANCE hInstance,
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DWORD dwReason,
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LPVOID lpReserved
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)
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{
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switch (dwReason) {
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case DLL_PROCESS_ATTACH:
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//
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// NOTE: If FALSE is returned, none of the executables will run.
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// Every project executable links to this library.
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//
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if(!pSetupInitializeUtils()) {
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DEBUGMSG ((DBG_ERROR, "Cannot initialize SpUtils"));
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return FALSE;
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}
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//
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// Load in OSVERSION info.
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//
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g_OsInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
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// this function only fails if we specify an invalid value
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// for the dwOSVersionInfoSize member (which we don't)
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if(!GetVersionExA(&g_OsInfo))
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MYASSERT(FALSE);
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//
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// Initialize the global flag indicating that a MBCS code page is in use
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//
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g_IsMbcp = (_getmbcp () != 0);
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//g_IsPc98 = (GetKeyboardType (0) == 7) && ((GetKeyboardType (1) & 0xff00) == 0x0d00);
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g_IsPc98 = FALSE;
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g_BootDrivePathA = g_BootDrivePathBufA;
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g_BootDrivePathW = g_BootDrivePathBufW;
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g_BootDriveA = g_BootDriveBufA;
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g_BootDriveW = g_BootDriveBufW;
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if (g_IsPc98) {
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StringCopyA ((PSTR) g_BootDrivePathA, "A:\\");
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StringCopyW ((PWSTR) g_BootDrivePathW, L"A:\\");
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StringCopyA ((PSTR) g_BootDriveA, "A:");
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StringCopyW ((PWSTR) g_BootDriveW, L"A:");
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g_BootDriveLetterA = 'A';
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g_BootDriveLetterW = L'A';
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} else {
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StringCopyA ((PSTR) g_BootDrivePathA, "C:\\");
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StringCopyW ((PWSTR) g_BootDrivePathW, L"C:\\");
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StringCopyA ((PSTR) g_BootDriveA, "C:");
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StringCopyW ((PWSTR) g_BootDriveW, L"C:");
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g_BootDriveLetterA = 'C';
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g_BootDriveLetterW = L'C';
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}
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// initialize log
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if (!LogInit (NULL)) {
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return FALSE;
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}
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// MemAlloc critical section
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InitializeCriticalSection (&g_MemAllocCs);
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fInitedMemAllocCs = TRUE;
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// Now that MemAlloc will work, initialize allocation tracking
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InitAllocationTracking();
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// PoolMem critical section
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InitializeCriticalSection (&g_PoolMemCs);
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fInitedPoolMemCs = TRUE;
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// The short-term alloc table for string resource utils
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g_ShortTermAllocTable = CreateAllocTable();
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if (!g_ShortTermAllocTable) {
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DEBUGMSG ((DBG_ERROR, "Cannot create short-term AllocTable"));
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return FALSE;
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}
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//
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// MultiByteToWideChar has desirable flags that only function on NT.
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// Because of our SUBSYSTEM=4.00 header requirements, we don't get
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// this constant.
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//
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#ifndef WC_NO_BEST_FIT_CHARS
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#define WC_NO_BEST_FIT_CHARS 0x00000400
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#endif
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g_MigutilWCToMBFlags = (ISNT()) ? WC_NO_BEST_FIT_CHARS : 0;
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// The critical section that guards ParseMessage/GetStringResource
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if (!InitializeOurCriticalSection (&g_MessageCs)) {
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DEBUGMSG ((DBG_ERROR, "Cannot initialize critical section"));
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DestroyAllocTable (g_ShortTermAllocTable);
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g_ShortTermAllocTable = NULL;
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}
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else
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{
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fInitedMessageCs = TRUE;
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}
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// A pool for APIs in reg.c
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g_RegistryApiPool = PoolMemInitNamedPool ("Registry API");
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g_PathsPool = PoolMemInitNamedPool ("Paths");
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g_TextPool = PoolMemInitNamedPool ("Text");
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if (!g_RegistryApiPool || !g_PathsPool || !g_TextPool) {
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return FALSE;
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}
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PoolMemSetMinimumGrowthSize (g_TextPool, TEXT_GROWTH_SIZE);
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// The "out of memory" message
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g_OutOfMemoryTable = CreateAllocTable();
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if (!g_OutOfMemoryTable) {
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DEBUGMSG ((DBG_ERROR, "Cannot create out of memory AllocTable"));
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return FALSE;
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}
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g_OutOfMemoryRetry = GetStringResourceExA (g_OutOfMemoryTable, 10001 /* MSG_OUT_OF_MEMORY_RETRY */);
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g_OutOfMemoryString = GetStringResourceExA (g_OutOfMemoryTable, 10002 /* MSG_OUT_OF_MEMORY */);
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if (!g_OutOfMemoryString || !g_OutOfMemoryRetry) {
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DEBUGMSG ((DBG_WARNING, "Cannot load out of memory messages"));
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}
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g_ErrorString = GetStringResourceExA (g_OutOfMemoryTable, 10003 /* MSG_ERROR */);
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if (!g_ErrorString || g_ErrorString[0] == 0) {
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g_ErrorString = "Error";
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}
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//
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// set the locale to the system locale. Not doing this can cause isspace to Av in certain MBSCHR circumstances.
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//
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setlocale(LC_ALL,"");
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InfGlobalInit (FALSE);
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RegInitialize();
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break;
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case DLL_PROCESS_DETACH:
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#ifdef DEBUG
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DumpOpenKeys();
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RegTerminate();
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#endif
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InfGlobalInit (TRUE);
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if (g_RegistryApiPool) {
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PoolMemDestroyPool (g_RegistryApiPool);
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}
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if (g_PathsPool) {
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PoolMemDestroyPool (g_PathsPool);
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}
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if (g_TextPool) {
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PoolMemDestroyPool (g_TextPool);
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}
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if (g_ShortTermAllocTable) {
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DestroyAllocTable (g_ShortTermAllocTable);
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}
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if (g_OutOfMemoryTable) {
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DestroyAllocTable (g_OutOfMemoryTable);
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}
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FreeAllocationTracking();
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//
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// VERY LAST CODE TO RUN
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//
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DumpHeapStats();
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LogExit();
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pSetupUninitializeUtils();
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if (fInitedMessageCs) {
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DeleteOurCriticalSection (&g_MessageCs);
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}
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if (fInitedPoolMemCs) {
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DeleteCriticalSection (&g_PoolMemCs);
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}
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if (fInitedMemAllocCs) {
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DeleteCriticalSection (&g_MemAllocCs);
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}
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break;
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}
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return TRUE;
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}
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#define WIDTH(rect) (rect.right - rect.left)
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#define HEIGHT(rect) (rect.bottom - rect.top)
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void
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CenterWindow (
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IN HWND hwnd,
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IN HWND Parent
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)
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{
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RECT WndRect, ParentRect;
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int x, y;
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if (!Parent) {
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ParentRect.left = 0;
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ParentRect.top = 0;
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ParentRect.right = GetSystemMetrics (SM_CXFULLSCREEN);
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ParentRect.bottom = GetSystemMetrics (SM_CYFULLSCREEN);
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} else {
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GetWindowRect (Parent, &ParentRect);
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}
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MYASSERT (IsWindow (hwnd));
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GetWindowRect (hwnd, &WndRect);
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x = ParentRect.left + (WIDTH(ParentRect) - WIDTH(WndRect)) / 2;
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y = ParentRect.top + (HEIGHT(ParentRect) - HEIGHT(WndRect)) / 2;
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SetWindowPos (hwnd, NULL, x, y, 0, 0, SWP_NOZORDER|SWP_NOSIZE);
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}
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static INT g_MigUtilWaitCounter = 0;
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static HCURSOR g_MigUtilWaitCursor = NULL;
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VOID
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TurnOnWaitCursor (
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VOID
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)
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/*++
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Routine Description:
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TurnOnWaitCursor sets the cursor to IDC_WAIT. It maintains a use
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counter, so code requring the wait cursor can be nested.
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Arguments:
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none
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Return Value:
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none
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--*/
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{
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if (g_MigUtilWaitCounter == 0) {
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g_MigUtilWaitCursor = SetCursor (LoadCursor (NULL, IDC_WAIT));
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}
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g_MigUtilWaitCounter++;
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}
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VOID
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TurnOffWaitCursor (
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VOID
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)
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/*++
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Routine Description:
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TurnOffWaitCursor decrements the wait cursor counter, and if it
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reaches zero the cursor is restored.
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Arguments:
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none
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Return Value:
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none
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--*/
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{
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if (!g_MigUtilWaitCounter) {
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DEBUGMSG ((DBG_WHOOPS, "TurnOffWaitCursor called too many times"));
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} else {
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g_MigUtilWaitCounter--;
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if (!g_MigUtilWaitCounter) {
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SetCursor (g_MigUtilWaitCursor);
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}
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}
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}
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/*++
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Routine Description:
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Win9x does not support TryEnterOurCriticalSection, so we must implement
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our own version because it is quite a useful function.
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Arguments:
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pcs - A pointer to an OUR_CRITICAL_SECTION object
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Return Value:
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TRUE if the function succeeded, or FALSE if it failed. See Win32
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SDK docs on critical sections, as these routines are identical to
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the caller.
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--*/
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BOOL
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InitializeOurCriticalSection (
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OUR_CRITICAL_SECTION *pcs
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)
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{
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// Create initially signaled, auto-reset event
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pcs->EventHandle = CreateEvent (NULL, FALSE, TRUE, NULL);
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if (!pcs->EventHandle) {
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return FALSE;
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}
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return TRUE;
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}
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VOID
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DeleteOurCriticalSection (
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OUR_CRITICAL_SECTION *pcs
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)
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{
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if (pcs->EventHandle) {
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CloseHandle (pcs->EventHandle);
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pcs->EventHandle = NULL;
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}
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}
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BOOL
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EnterOurCriticalSection (
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OUR_CRITICAL_SECTION *pcs
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)
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{
|
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DWORD rc;
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// Wait for event to become signaled, then turn it off
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rc = WaitForSingleObject (pcs->EventHandle, INFINITE);
|
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if (rc == WAIT_OBJECT_0) {
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return TRUE;
|
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}
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return FALSE;
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}
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VOID
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LeaveOurCriticalSection (
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OUR_CRITICAL_SECTION *pcs
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)
|
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{
|
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SetEvent (pcs->EventHandle);
|
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}
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|
|
BOOL
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TryEnterOurCriticalSection (
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OUR_CRITICAL_SECTION *pcs
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)
|
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{
|
|
DWORD rc;
|
|
|
|
rc = WaitForSingleObject (pcs->EventHandle, 0);
|
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if (rc == WAIT_OBJECT_0) {
|
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return TRUE;
|
|
}
|
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|
|
return FALSE;
|
|
}
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|
|
|
|
#define REUSE_SIZE_PTR(ptr) ((PSIZE_T) ((PBYTE) ptr - sizeof (SIZE_T)))
|
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#define REUSE_TAG_PTR(ptr) ((PSIZE_T) ((PBYTE) ptr + (*REUSE_SIZE_PTR(ptr))))
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|
|
|
PVOID
|
|
ReuseAlloc (
|
|
HANDLE Heap,
|
|
PVOID OldPtr,
|
|
SIZE_T SizeNeeded
|
|
)
|
|
{
|
|
SIZE_T CurrentSize;
|
|
PVOID Ptr = NULL;
|
|
UINT AllocAdjustment = sizeof(SIZE_T);
|
|
|
|
//
|
|
// HeapSize is bad, so while it may look good, don't
|
|
// use it.
|
|
//
|
|
|
|
#ifdef DEBUG
|
|
AllocAdjustment += sizeof (SIZE_T);
|
|
#endif
|
|
|
|
if (!OldPtr) {
|
|
Ptr = MemAlloc (Heap, 0, SizeNeeded + AllocAdjustment);
|
|
} else {
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|
|
|
CurrentSize = *REUSE_SIZE_PTR(OldPtr);
|
|
|
|
#ifdef DEBUG
|
|
if (*REUSE_TAG_PTR(OldPtr) != 0x10a28a70) {
|
|
DEBUGMSG ((DBG_WHOOPS, "MemReuse detected corruption!"));
|
|
Ptr = MemAlloc (Heap, 0, SizeNeeded + AllocAdjustment);
|
|
} else
|
|
#endif
|
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|
|
if (SizeNeeded > CurrentSize) {
|
|
SizeNeeded += 1024 - (SizeNeeded & 1023);
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|
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Ptr = MemReAlloc (Heap, 0, REUSE_SIZE_PTR(OldPtr), SizeNeeded + AllocAdjustment);
|
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OldPtr = NULL;
|
|
}
|
|
}
|
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|
|
if (Ptr) {
|
|
*((PSIZE_T) Ptr) = SizeNeeded;
|
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Ptr = (PVOID) ((PBYTE) Ptr + sizeof (SIZE_T));
|
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|
|
#ifdef DEBUG
|
|
*REUSE_TAG_PTR(Ptr) = 0x10a28a70;
|
|
#endif
|
|
}
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|
|
return Ptr ? Ptr : OldPtr;
|
|
}
|
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|
|
VOID
|
|
ReuseFree (
|
|
HANDLE Heap,
|
|
PVOID Ptr
|
|
)
|
|
{
|
|
if (Ptr) {
|
|
MemFree (Heap, 0, REUSE_SIZE_PTR(Ptr));
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
SetOutOfMemoryParent (
|
|
HWND hwnd
|
|
)
|
|
{
|
|
g_OutOfMemoryParentWnd = hwnd;
|
|
}
|
|
|
|
|
|
VOID
|
|
OutOfMemory_Terminate (
|
|
VOID
|
|
)
|
|
{
|
|
MessageBoxA (
|
|
g_OutOfMemoryParentWnd,
|
|
g_OutOfMemoryString,
|
|
g_ErrorString,
|
|
MB_OK|MB_ICONHAND|MB_SYSTEMMODAL|MB_SETFOREGROUND|MB_TOPMOST
|
|
);
|
|
|
|
ExitProcess (0);
|
|
TerminateProcess (GetModuleHandle (NULL), 0);
|
|
}
|
|
|
|
|
|
VOID
|
|
pValidateBlock (
|
|
PVOID Block,
|
|
SIZE_T Size
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
pValidateBlock makes sure Block is non-NULL. If it is NULL, then the user
|
|
is given a popup, unless the request size is bogus.
|
|
|
|
There are two cases for the popup.
|
|
|
|
- If g_OutOfMemoryParentWnd was set with SetOutOfMemoryParent,
|
|
then the user is asked to close other programs, and is given a retry
|
|
option.
|
|
|
|
- If there is no out of memory parent, then the user is told they
|
|
need to get more memory.
|
|
|
|
In either case, Setup is terminated. In GUI mode, Setup will be
|
|
stuck and the machine will be unbootable.
|
|
|
|
Arguments:
|
|
|
|
Block - Specifies the block to validate.
|
|
Size - Specifies the request size
|
|
|
|
Return Value:
|
|
|
|
none
|
|
|
|
--*/
|
|
|
|
{
|
|
LONG rc;
|
|
|
|
if (!Block && Size < 0x2000000) {
|
|
if (g_OutOfMemoryParentWnd) {
|
|
rc = MessageBoxA (
|
|
g_OutOfMemoryParentWnd,
|
|
g_OutOfMemoryRetry,
|
|
g_ErrorString,
|
|
MB_RETRYCANCEL|MB_ICONHAND|MB_SYSTEMMODAL|MB_SETFOREGROUND|MB_TOPMOST
|
|
);
|
|
|
|
if (rc == IDCANCEL) {
|
|
OutOfMemory_Terminate();
|
|
}
|
|
} else {
|
|
OutOfMemory_Terminate();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
PVOID
|
|
SafeHeapAlloc (
|
|
HANDLE Heap,
|
|
DWORD Flags,
|
|
SIZE_T Size
|
|
)
|
|
{
|
|
PVOID Block;
|
|
|
|
do {
|
|
Block = HeapAlloc (Heap, Flags, Size);
|
|
pValidateBlock (Block, Size);
|
|
|
|
} while (!Block);
|
|
|
|
return Block;
|
|
}
|
|
|
|
|
|
|
|
PVOID
|
|
SafeHeapReAlloc (
|
|
HANDLE Heap,
|
|
DWORD Flags,
|
|
PVOID OldBlock,
|
|
SIZE_T Size
|
|
)
|
|
{
|
|
PVOID Block;
|
|
|
|
do {
|
|
Block = HeapReAlloc (Heap, Flags, OldBlock, Size);
|
|
pValidateBlock (Block, Size);
|
|
|
|
} while (!Block);
|
|
|
|
return Block;
|
|
}
|
|
|
|
|
|
|
|
HANDLE
|
|
StartThread (
|
|
IN PTHREAD_START_ROUTINE Address,
|
|
IN PVOID Arg
|
|
)
|
|
{
|
|
DWORD DontCare;
|
|
|
|
return CreateThread (NULL, 0, Address, Arg, 0, &DontCare);
|
|
}
|
|
|
|
|
|
BOOL
|
|
BuildSystemDirectoryPathA (
|
|
OUT PSTR Buffer,
|
|
IN UINT BufferSizeInTchars,
|
|
IN PCSTR SubPath OPTIONAL
|
|
)
|
|
{
|
|
INT tcharsLeft;
|
|
INT tcharsCopied;
|
|
HRESULT hr;
|
|
PSTR endOfBuffer;
|
|
|
|
//
|
|
// Compute the number of TCHARs available for c:\windows\system
|
|
//
|
|
|
|
tcharsLeft = BufferSizeInTchars;
|
|
|
|
if (SubPath) {
|
|
while (_mbsnextc (SubPath) == '\\') {
|
|
SubPath = _mbsinc (SubPath);
|
|
}
|
|
|
|
tcharsLeft -= 1; // account for wack
|
|
tcharsLeft -= TcharCountA (SubPath); // account for subpath
|
|
}
|
|
|
|
if (tcharsLeft < 1) {
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Get the system dir, validate the return result
|
|
//
|
|
|
|
tcharsCopied = GetSystemDirectoryA (Buffer, tcharsLeft);
|
|
|
|
if (tcharsCopied == 0 || tcharsCopied >= tcharsLeft) {
|
|
LOGA_IF ((SubPath != NULL, LOG_ERROR, "Can't build path to %s in system directory", SubPath));
|
|
LOGA_IF ((!SubPath, LOG_ERROR, "Can't get system directory"));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Append the subpath if it was specified
|
|
//
|
|
|
|
if (SubPath) {
|
|
//
|
|
// Copy wack plus subpath, buffer space accounted for above.
|
|
//
|
|
|
|
endOfBuffer = Buffer + tcharsCopied;
|
|
*endOfBuffer++ = '\\';
|
|
|
|
tcharsLeft = BufferSizeInTchars - tcharsCopied - 1;
|
|
MYASSERT (tcharsLeft > 0);
|
|
|
|
hr = StringCchCopyA (endOfBuffer, tcharsLeft, SubPath);
|
|
|
|
if (FAILED(hr)) {
|
|
MYASSERT (FALSE);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
BOOL
|
|
BuildSystemDirectoryPathW (
|
|
OUT PWSTR Buffer,
|
|
IN UINT BufferSizeInTchars,
|
|
IN PCWSTR SubPath OPTIONAL
|
|
)
|
|
{
|
|
INT tcharsLeft;
|
|
INT tcharsCopied;
|
|
HRESULT hr;
|
|
PWSTR endOfBuffer;
|
|
|
|
//
|
|
// Compute the number of TCHARs available for c:\windows\system
|
|
//
|
|
|
|
tcharsLeft = BufferSizeInTchars;
|
|
|
|
if (SubPath) {
|
|
while (*SubPath == '\\') {
|
|
SubPath++;
|
|
}
|
|
|
|
tcharsLeft -= 1; // account for wack
|
|
tcharsLeft -= TcharCountW (SubPath); // account for subpath
|
|
}
|
|
|
|
if (tcharsLeft < 1) {
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Get the system dir, validate the return result
|
|
//
|
|
|
|
tcharsCopied = GetSystemDirectoryW (Buffer, tcharsLeft);
|
|
|
|
if (tcharsCopied == 0 || tcharsCopied >= tcharsLeft) {
|
|
LOGW_IF ((SubPath != NULL, LOG_ERROR, "Can't build path to %s in system directory", SubPath));
|
|
LOGW_IF ((!SubPath, LOG_ERROR, "Can't get system directory"));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// Append the subpath if it was specified
|
|
//
|
|
|
|
if (SubPath) {
|
|
//
|
|
// Copy wack plus subpath, buffer space accounted for above.
|
|
//
|
|
|
|
endOfBuffer = Buffer + tcharsCopied;
|
|
*endOfBuffer++ = L'\\';
|
|
|
|
tcharsLeft = BufferSizeInTchars - tcharsCopied - 1;
|
|
MYASSERT (tcharsLeft > 0);
|
|
|
|
hr = StringCchCopyW (endOfBuffer, tcharsLeft, SubPath);
|
|
|
|
if (FAILED(hr)) {
|
|
MYASSERT (FALSE);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
HMODULE
|
|
LoadSystemLibraryA (
|
|
IN PCSTR DllFileName
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
LoadSystemLibraryW loads a DLL located in c:\windows\system (9x) or
|
|
c:\windows\system32 (NT). If the DLL is not there, an error is generated.
|
|
|
|
Arguments:
|
|
|
|
DllFileName - Specifies the file or file subpath to load. For example, it
|
|
can be "kernel32.dll".
|
|
|
|
Return Value:
|
|
|
|
The module handle, or NULL if an error occurs. Call GetLastError() for the
|
|
error code.
|
|
|
|
--*/
|
|
|
|
{
|
|
CHAR fullLibPath[MAX_MBCHAR_PATH];
|
|
UINT result;
|
|
|
|
if (!BuildSystemDirectoryPathA (fullLibPath, ARRAYSIZE(fullLibPath), DllFileName)) {
|
|
return NULL;
|
|
}
|
|
|
|
return LoadLibraryA (fullLibPath);
|
|
}
|
|
|
|
|
|
HMODULE
|
|
LoadSystemLibraryW (
|
|
IN PCWSTR DllFileName
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
LoadSystemLibraryW loads a DLL located in c:\windows\system32. If the DLL is
|
|
not there, an error is generated.
|
|
|
|
This version runs only on Windows NT, or on Win9x with the unicode layer.
|
|
|
|
Arguments:
|
|
|
|
DllFileName - Specifies the file or file subpath to load. For example, it
|
|
can be "kernel32.dll".
|
|
|
|
Return Value:
|
|
|
|
The module handle, or NULL if an error occurs. Call GetLastError() for the
|
|
error code.
|
|
|
|
--*/
|
|
|
|
{
|
|
WCHAR fullLibPath[MAX_WCHAR_PATH];
|
|
UINT result;
|
|
|
|
if (!BuildSystemDirectoryPathW (fullLibPath, ARRAYSIZE(fullLibPath), DllFileName)) {
|
|
return NULL;
|
|
}
|
|
|
|
return LoadLibraryW (fullLibPath);
|
|
}
|
|
|
|
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
OurGetModuleFileName is a wrapper for GetModuleFileName, but in addition
|
|
|
|
it makes sure the output buffer is always nul-terminated.
|
|
|
|
Arguments:
|
|
|
|
Same as GetModuleFileName
|
|
|
|
Return Value:
|
|
|
|
Same as GetModuleFileName, but the output buffer is always nul-terminated
|
|
|
|
--*/
|
|
|
|
DWORD
|
|
OurGetModuleFileNameA (
|
|
IN HMODULE Module,
|
|
OUT PSTR Buffer,
|
|
IN INT BufferChars
|
|
)
|
|
{
|
|
//
|
|
// call the real API
|
|
//
|
|
#undef GetModuleFileNameA
|
|
INT d = GetModuleFileNameA (Module, Buffer, BufferChars);
|
|
if (BufferChars > 0) {
|
|
Buffer[BufferChars - 1] = 0;
|
|
} else {
|
|
MYASSERT (FALSE);
|
|
}
|
|
return d < BufferChars ? d : 0;
|
|
}
|
|
|
|
DWORD
|
|
OurGetModuleFileNameW (
|
|
IN HMODULE Module,
|
|
OUT PWSTR Buffer,
|
|
IN INT BufferChars
|
|
)
|
|
{
|
|
//
|
|
// call the real API
|
|
//
|
|
#undef GetModuleFileNameW
|
|
INT d = GetModuleFileNameW (Module, Buffer, BufferChars);
|
|
if (BufferChars > 0) {
|
|
Buffer[BufferChars - 1] = 0;
|
|
} else {
|
|
MYASSERT (FALSE);
|
|
}
|
|
return d < BufferChars ? d : 0;
|
|
}
|
|
|