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  • Committer: Bazaar Package Importer
  • Author(s): Matthias Klose
  • Date: 2010-07-06 16:52:42 UTC
  • mfrom: (1.2.1 upstream) (2.1.11 sid)
  • Revision ID: james.westby@ubuntu.com-20100706165242-2xv4i019r3et6c0j
Tags: 3.1.2+20100706-1ubuntu1
* Merge with Debian; remaining changes:
  - Regenerate the control file.
  - Add debian/patches/overwrite-semaphore-check for Lucid buildds.

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PC/dl_nt.c
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Entry point for the Windows NT DLL.
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About the only reason for having this, is so initall() can automatically
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be called, removing that burden (and possible source of frustration if 
 
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be called, removing that burden (and possible source of frustration if
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forgotten) from the programmer.
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*/
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void _LoadActCtxPointers()
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{
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        HINSTANCE hKernel32 = GetModuleHandleW(L"kernel32.dll");
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        if (hKernel32)
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                pfnGetCurrentActCtx = (PFN_GETCURRENTACTCTX) GetProcAddress(hKernel32, "GetCurrentActCtx");
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        // If we can't load GetCurrentActCtx (ie, pre XP) , don't bother with the rest.
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        if (pfnGetCurrentActCtx) {
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                pfnActivateActCtx = (PFN_ACTIVATEACTCTX) GetProcAddress(hKernel32, "ActivateActCtx");
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                pfnDeactivateActCtx = (PFN_DEACTIVATEACTCTX) GetProcAddress(hKernel32, "DeactivateActCtx");
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                pfnAddRefActCtx = (PFN_ADDREFACTCTX) GetProcAddress(hKernel32, "AddRefActCtx");
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                pfnReleaseActCtx = (PFN_RELEASEACTCTX) GetProcAddress(hKernel32, "ReleaseActCtx");
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        }
 
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    HINSTANCE hKernel32 = GetModuleHandleW(L"kernel32.dll");
 
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    if (hKernel32)
 
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        pfnGetCurrentActCtx = (PFN_GETCURRENTACTCTX) GetProcAddress(hKernel32, "GetCurrentActCtx");
 
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    // If we can't load GetCurrentActCtx (ie, pre XP) , don't bother with the rest.
 
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    if (pfnGetCurrentActCtx) {
 
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        pfnActivateActCtx = (PFN_ACTIVATEACTCTX) GetProcAddress(hKernel32, "ActivateActCtx");
 
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        pfnDeactivateActCtx = (PFN_DEACTIVATEACTCTX) GetProcAddress(hKernel32, "DeactivateActCtx");
 
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        pfnAddRefActCtx = (PFN_ADDREFACTCTX) GetProcAddress(hKernel32, "AddRefActCtx");
 
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        pfnReleaseActCtx = (PFN_RELEASEACTCTX) GetProcAddress(hKernel32, "ReleaseActCtx");
 
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    }
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}
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ULONG_PTR _Py_ActivateActCtx()
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{
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        ULONG_PTR ret = 0;
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        if (PyWin_DLLhActivationContext && pfnActivateActCtx)
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                if (!(*pfnActivateActCtx)(PyWin_DLLhActivationContext, &ret)) {
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                        OutputDebugString("Python failed to activate the activation context before loading a DLL\n");
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                        ret = 0; // no promise the failing function didn't change it!
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                }
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        return ret;
 
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    ULONG_PTR ret = 0;
 
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    if (PyWin_DLLhActivationContext && pfnActivateActCtx)
 
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        if (!(*pfnActivateActCtx)(PyWin_DLLhActivationContext, &ret)) {
 
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            OutputDebugString("Python failed to activate the activation context before loading a DLL\n");
 
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            ret = 0; // no promise the failing function didn't change it!
 
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        }
 
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    return ret;
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}
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void _Py_DeactivateActCtx(ULONG_PTR cookie)
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{
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        if (cookie && pfnDeactivateActCtx)
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                if (!(*pfnDeactivateActCtx)(0, cookie))
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                        OutputDebugString("Python failed to de-activate the activation context\n");
 
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    if (cookie && pfnDeactivateActCtx)
 
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        if (!(*pfnDeactivateActCtx)(0, cookie))
 
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            OutputDebugString("Python failed to de-activate the activation context\n");
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}
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BOOL    WINAPI  DllMain (HANDLE hInst, 
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                                                ULONG ul_reason_for_call,
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                                                LPVOID lpReserved)
 
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BOOL    WINAPI  DllMain (HANDLE hInst,
 
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                                                ULONG ul_reason_for_call,
 
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                                                LPVOID lpReserved)
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{
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        switch (ul_reason_for_call)
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        {
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                case DLL_PROCESS_ATTACH:
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                        PyWin_DLLhModule = hInst;
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                        // 1000 is a magic number I picked out of the air.  Could do with a #define, I spose...
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                        LoadString(hInst, 1000, dllVersionBuffer, sizeof(dllVersionBuffer));
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                        // and capture our activation context for use when loading extensions.
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                        _LoadActCtxPointers();
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                        if (pfnGetCurrentActCtx && pfnAddRefActCtx)
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                                if ((*pfnGetCurrentActCtx)(&PyWin_DLLhActivationContext))
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                                        if (!(*pfnAddRefActCtx)(PyWin_DLLhActivationContext))
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                                                OutputDebugString("Python failed to load the default activation context\n");
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                        break;
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                case DLL_PROCESS_DETACH:
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                        if (pfnReleaseActCtx)
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                                (*pfnReleaseActCtx)(PyWin_DLLhActivationContext);
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                        break;
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        }
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        return TRUE;
 
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    switch (ul_reason_for_call)
 
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    {
 
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        case DLL_PROCESS_ATTACH:
 
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            PyWin_DLLhModule = hInst;
 
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            // 1000 is a magic number I picked out of the air.  Could do with a #define, I spose...
 
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            LoadString(hInst, 1000, dllVersionBuffer, sizeof(dllVersionBuffer));
 
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            // and capture our activation context for use when loading extensions.
 
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            _LoadActCtxPointers();
 
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            if (pfnGetCurrentActCtx && pfnAddRefActCtx)
 
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                if ((*pfnGetCurrentActCtx)(&PyWin_DLLhActivationContext))
 
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                    if (!(*pfnAddRefActCtx)(PyWin_DLLhActivationContext))
 
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                        OutputDebugString("Python failed to load the default activation context\n");
 
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            break;
 
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        case DLL_PROCESS_DETACH:
 
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            if (pfnReleaseActCtx)
 
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                (*pfnReleaseActCtx)(PyWin_DLLhActivationContext);
 
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            break;
 
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    }
 
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    return TRUE;
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}
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#endif /* Py_ENABLE_SHARED */