X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=src%2FOSSupport_Win32.cpp;h=bef14baf101b1a5492e4a49ea2b6c6a039616455;hb=6c7371b941640d6d0aab4db43ba12e83f7c247eb;hp=cbcd692c30cef0e4161aa397d312f03aed05aa53;hpb=d17c45e59291a9154bcf16261b66f707139f9bb8;p=mutilities%2FMUtilities.git diff --git a/src/OSSupport_Win32.cpp b/src/OSSupport_Win32.cpp index cbcd692..bef14ba 100644 --- a/src/OSSupport_Win32.cpp +++ b/src/OSSupport_Win32.cpp @@ -1,6 +1,6 @@ /////////////////////////////////////////////////////////////////////////////// // MuldeR's Utilities for Qt -// Copyright (C) 2004-2015 LoRd_MuldeR +// Copyright (C) 2004-2018 LoRd_MuldeR // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public @@ -27,6 +27,7 @@ #include #include #include +#include #pragma warning(push) #pragma warning(disable:4091) //for MSVC2015 #include @@ -48,6 +49,7 @@ #include #include #include +#include //Main thread ID static const DWORD g_main_thread_id = GetCurrentThreadId(); @@ -284,7 +286,7 @@ g_os_version_lut[] = { MUtils::OS::Version::WINDOWS_WIN70, "Windows 7 or Windows Server 2008 R2" }, //7 { MUtils::OS::Version::WINDOWS_WIN80, "Windows 8 or Windows Server 2012" }, //8 { MUtils::OS::Version::WINDOWS_WIN81, "Windows 8.1 or Windows Server 2012 R2" }, //8.1 - { MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2014 (Preview)" }, //10 + { MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2016" }, //10 { MUtils::OS::Version::UNKNOWN_OPSYS, "N/A" } }; @@ -304,29 +306,88 @@ namespace MUtils bool os_version_t::operator<= (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor < rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor <= rhs.versionMinor))); } //Known Windows NT versions - const os_version_t WINDOWS_WIN2K = { OS_WINDOWS, 5, 0 }; // 2000 - const os_version_t WINDOWS_WINXP = { OS_WINDOWS, 5, 1 }; // XP - const os_version_t WINDOWS_XPX64 = { OS_WINDOWS, 5, 2 }; // XP_x64 - const os_version_t WINDOWS_VISTA = { OS_WINDOWS, 6, 0 }; // Vista - const os_version_t WINDOWS_WIN70 = { OS_WINDOWS, 6, 1 }; // 7 - const os_version_t WINDOWS_WIN80 = { OS_WINDOWS, 6, 2 }; // 8 - const os_version_t WINDOWS_WIN81 = { OS_WINDOWS, 6, 3 }; // 8.1 - const os_version_t WINDOWS_WN100 = { OS_WINDOWS, 10, 0 }; // 10 + const os_version_t WINDOWS_WIN2K = { OS_WINDOWS, 5, 0, 2195, 0 }; // 2000 + const os_version_t WINDOWS_WINXP = { OS_WINDOWS, 5, 1, 2600, 0 }; // XP + const os_version_t WINDOWS_XPX64 = { OS_WINDOWS, 5, 2, 3790, 0 }; // XP_x64 + const os_version_t WINDOWS_VISTA = { OS_WINDOWS, 6, 0, 6000, 0 }; // Vista + const os_version_t WINDOWS_WIN70 = { OS_WINDOWS, 6, 1, 7600, 0 }; // 7 + const os_version_t WINDOWS_WIN80 = { OS_WINDOWS, 6, 2, 9200, 0 }; // 8 + const os_version_t WINDOWS_WIN81 = { OS_WINDOWS, 6, 3, 9600, 0 }; // 8.1 + const os_version_t WINDOWS_WN100 = { OS_WINDOWS, 10, 0, 10240, 0 }; // 10 //Unknown OS - const os_version_t UNKNOWN_OPSYS = { OS_UNKNOWN, 0, 0 }; // N/A + const os_version_t UNKNOWN_OPSYS = { OS_UNKNOWN, 0, 0, 0, 0 }; // N/A } } } +static inline DWORD SAFE_ADD(const DWORD &a, const DWORD &b, const DWORD &limit = MAXDWORD) +{ + return ((a >= limit) || (b >= limit) || ((limit - a) <= b)) ? limit : (a + b); +} + + +static void initialize_os_version(OSVERSIONINFOEXW *const osInfo) +{ + memset(osInfo, 0, sizeof(OSVERSIONINFOEXW)); + osInfo->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW); +} + +static inline DWORD initialize_step_size(const DWORD &limit) +{ + DWORD result = 1; + while (result < limit) + { + result = SAFE_ADD(result, result); + } + return result; +} + +static bool rtl_get_version(OSVERSIONINFOEXW *const osInfo) +{ + typedef LONG(__stdcall *RtlGetVersion)(LPOSVERSIONINFOEXW); + if (const HMODULE ntdll = GetModuleHandleW(L"ntdll")) + { + if (const RtlGetVersion pRtlGetVersion = (RtlGetVersion)GetProcAddress(ntdll, "RtlGetVersion")) + { + initialize_os_version(osInfo); + if (pRtlGetVersion(osInfo) == 0) + { + return true; + } + } + } + + //Fallback + initialize_os_version(osInfo); + return (GetVersionExW((LPOSVERSIONINFOW)osInfo) != FALSE); +} + +static bool rtl_verify_version(OSVERSIONINFOEXW *const osInfo, const ULONG typeMask, const ULONGLONG condMask) +{ + typedef LONG(__stdcall *RtlVerifyVersionInfo)(LPOSVERSIONINFOEXW, ULONG, ULONGLONG); + if (const HMODULE ntdll = GetModuleHandleW(L"ntdll")) + { + if (const RtlVerifyVersionInfo pRtlVerifyVersionInfo = (RtlVerifyVersionInfo)GetProcAddress(ntdll, "RtlVerifyVersionInfo")) + { + if (pRtlVerifyVersionInfo(osInfo, typeMask, condMask) == 0) + { + return true; + } + } + } + + //Fallback + return (VerifyVersionInfoW(osInfo, typeMask, condMask) != FALSE); +} + static bool verify_os_version(const DWORD major, const DWORD minor) { OSVERSIONINFOEXW osvi; DWORDLONG dwlConditionMask = 0; + initialize_os_version(&osvi); //Initialize the OSVERSIONINFOEX structure - memset(&osvi, 0, sizeof(OSVERSIONINFOEXW)); - osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW); osvi.dwMajorVersion = major; osvi.dwMinorVersion = minor; osvi.dwPlatformId = VER_PLATFORM_WIN32_NT; @@ -337,7 +398,7 @@ static bool verify_os_version(const DWORD major, const DWORD minor) VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL); // Perform the test - const BOOL ret = VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, dwlConditionMask); + const BOOL ret = rtl_verify_version(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, dwlConditionMask); //Error checking if(!ret) @@ -351,9 +412,71 @@ static bool verify_os_version(const DWORD major, const DWORD minor) return (ret != FALSE); } -static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool *pbOverride) +static bool verify_os_build(const DWORD build) +{ + OSVERSIONINFOEXW osvi; + DWORDLONG dwlConditionMask = 0; + initialize_os_version(&osvi); + + //Initialize the OSVERSIONINFOEX structure + osvi.dwBuildNumber = build; + osvi.dwPlatformId = VER_PLATFORM_WIN32_NT; + + //Initialize the condition mask + VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL); + VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL); + + // Perform the test + const BOOL ret = rtl_verify_version(&osvi, VER_BUILDNUMBER | VER_PLATFORMID, dwlConditionMask); + + //Error checking + if (!ret) + { + if (GetLastError() != ERROR_OLD_WIN_VERSION) + { + qWarning("VerifyVersionInfo() system call has failed!"); + } + } + + return (ret != FALSE); +} + +static bool verify_os_spack(const WORD spack) +{ + OSVERSIONINFOEXW osvi; + DWORDLONG dwlConditionMask = 0; + initialize_os_version(&osvi); + + //Initialize the OSVERSIONINFOEX structure + osvi.wServicePackMajor = spack; + osvi.dwPlatformId = VER_PLATFORM_WIN32_NT; + + //Initialize the condition mask + VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL); + VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL); + + // Perform the test + const BOOL ret = rtl_verify_version(&osvi, VER_SERVICEPACKMAJOR | VER_PLATFORMID, dwlConditionMask); + + //Error checking + if (!ret) + { + if (GetLastError() != ERROR_OLD_WIN_VERSION) + { + qWarning("VerifyVersionInfo() system call has failed!"); + } + } + + return (ret != FALSE); +} + +static bool get_real_os_version(unsigned int *const major, unsigned int *const minor, unsigned int *const build, unsigned int *const spack, bool *const pbOverride) { - *major = *minor = 0; + static const DWORD MAX_VERSION = MAXWORD; + static const DWORD MAX_BUILDNO = MAXINT; + static const DWORD MAX_SRVCPCK = MAXWORD; + + *major = *minor = *build = *spack = 0U; *pbOverride = false; //Initialize local variables @@ -362,7 +485,7 @@ static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool * osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW); //Try GetVersionEx() first - if(GetVersionExW((LPOSVERSIONINFOW)&osvi) == FALSE) + if(rtl_get_version(&osvi) == FALSE) { qWarning("GetVersionEx() has failed, cannot detect Windows version!"); return false; @@ -373,52 +496,88 @@ static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool * { *major = osvi.dwMajorVersion; *minor = osvi.dwMinorVersion; + *build = osvi.dwBuildNumber; + *spack = osvi.wServicePackMajor; } else { - qWarning("Not running on Windows NT, unsupported operating system!"); - return false; + if (verify_os_version(4, 0)) + { + *major = 4; + *build = 1381; + *pbOverride = true; + } + else + { + qWarning("Not running on Windows NT, unsupported operating system!"); + return false; + } } - //Determine the real *major* version first - forever + //Major Version + for (DWORD nextMajor = (*major) + 1; nextMajor <= MAX_VERSION; nextMajor++) { - const DWORD nextMajor = (*major) + 1; - if(verify_os_version(nextMajor, 0)) + if (verify_os_version(nextMajor, 0)) { - *pbOverride = true; *major = nextMajor; *minor = 0; + *pbOverride = true; continue; } break; } - //Now also determine the real *minor* version - forever + //Minor Version + for (DWORD nextMinor = (*minor) + 1; nextMinor <= MAX_VERSION; nextMinor++) { - const DWORD nextMinor = (*minor) + 1; - if(verify_os_version((*major), nextMinor)) + if (verify_os_version((*major), nextMinor)) { - *pbOverride = true; *minor = nextMinor; + *pbOverride = true; continue; } break; } - //Workaround for the mess that is sometimes referred to as "Windows 10" - if(((*major) > 6) || (((*major) == 6) && ((*minor) >= 2))) + //Build Version + if (verify_os_build(SAFE_ADD((*build), 1, MAX_BUILDNO))) + { + DWORD stepSize = initialize_step_size(MAX_BUILDNO); + for (DWORD nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO); (*build) < MAX_BUILDNO; nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO)) + { + if (verify_os_build(nextBuildNo)) + { + *build = nextBuildNo; + *pbOverride = true; + continue; + } + if (stepSize > 1) + { + stepSize = stepSize / 2; + continue; + } + break; + } + } + + //Service Pack + if (verify_os_spack(SAFE_ADD((*spack), 1, MAX_SRVCPCK))) { - quint16 kernel32_major, kernel32_minor; - if(MUtils::OS::get_file_version(QLatin1String("kernel32"), &kernel32_major, &kernel32_minor)) + DWORD stepSize = initialize_step_size(MAX_SRVCPCK); + for (DWORD nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK); (*spack) < MAX_SRVCPCK; nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK)) { - if((kernel32_major > (*major)) || ((kernel32_major == (*major)) && (kernel32_minor > (*minor)))) + if (verify_os_spack(nextSPackNo)) { - *major = kernel32_major; - *minor = kernel32_minor; + *build = nextSPackNo; *pbOverride = true; + continue; + } + if (stepSize > 1) + { + stepSize = stepSize / 2; + continue; } + break; } } @@ -445,17 +604,19 @@ const MUtils::OS::Version::os_version_t &MUtils::OS::os_version(void) } //Detect OS version - unsigned int major, minor; bool overrideFlg; - if(get_real_os_version(&major, &minor, &overrideFlg)) + unsigned int major, minor, build, spack; bool overrideFlg; + if(get_real_os_version(&major, &minor, &build, &spack, &overrideFlg)) { g_os_version_info.type = Version::OS_WINDOWS; g_os_version_info.versionMajor = major; g_os_version_info.versionMinor = minor; + g_os_version_info.versionBuild = build; + g_os_version_info.versionSPack = spack; g_os_version_info.overrideFlag = overrideFlg; } else { - qWarning("Failed to determin the operating system version!"); + qWarning("Failed to determine the operating system version!"); } //Completed @@ -1000,15 +1161,61 @@ void MUtils::OS::sleep_ms(const size_t &duration) // EXECUTABLE CHECK /////////////////////////////////////////////////////////////////////////////// +static int g_library_as_image_resource_supported = -1; +static QReadWriteLock g_library_as_image_resource_supported_lock; + +static bool library_as_image_resource_supported() +{ + QReadLocker readLocker(&g_library_as_image_resource_supported_lock); + if (g_library_as_image_resource_supported >= 0) + { + return (g_library_as_image_resource_supported > 0); + } + + readLocker.unlock(); + QWriteLocker writeLocker(&g_library_as_image_resource_supported_lock); + + if (g_library_as_image_resource_supported < 0) + { + g_library_as_image_resource_supported = 0; + OSVERSIONINFOEXW osvi; + if (rtl_get_version(&osvi)) + { + if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osvi.dwMajorVersion >= 6U)) + { + g_library_as_image_resource_supported = 1; + } + } + } + + return (g_library_as_image_resource_supported > 0); +} + bool MUtils::OS::is_executable_file(const QString &path) { - bool bIsExecutable = false; DWORD binaryType; if(GetBinaryType(MUTILS_WCHR(QDir::toNativeSeparators(path)), &binaryType)) { - bIsExecutable = (binaryType == SCS_32BIT_BINARY || binaryType == SCS_64BIT_BINARY); + return ((binaryType == SCS_32BIT_BINARY) || (binaryType == SCS_64BIT_BINARY)); } - return bIsExecutable; + + const DWORD errorCode = GetLastError(); + qWarning("GetBinaryType() failed with error: 0x%08X", errorCode); + return false; +} + +bool MUtils::OS::is_library_file(const QString &path) +{ + const DWORD flags = library_as_image_resource_supported() ? (LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE) : (LOAD_LIBRARY_AS_DATAFILE | DONT_RESOLVE_DLL_REFERENCES); + if (const HMODULE hMod = LoadLibraryEx(MUTILS_WCHR(QDir::toNativeSeparators(path)), NULL, flags)) + { + FreeLibrary(hMod); + return true; + } + + const DWORD errorCode = GetLastError(); + qWarning("LoadLibraryEx() failed with error: 0x%08X", errorCode); + return false; } /////////////////////////////////////////////////////////////////////////////// @@ -1079,12 +1286,127 @@ bool MUtils::OS::free_diskspace(const QString &path, quint64 &freeSpace) } /////////////////////////////////////////////////////////////////////////////// +// DRIVE TYPE +/////////////////////////////////////////////////////////////////////////////// + +static wchar_t get_drive_letter(const QString &path) +{ + QString nativePath = QDir::toNativeSeparators(path); + while (nativePath.startsWith("\\\\?\\") || nativePath.startsWith("\\\\.\\")) + { + nativePath = QDir::toNativeSeparators(nativePath.mid(4)); + } + if ((path.length() > 1) && (path[1] == QLatin1Char(':'))) + { + const wchar_t letter = static_cast(path[0].unicode()); + if (((letter >= 'A') && (letter <= 'Z')) || ((letter >= 'a') && (letter <= 'z'))) + { + return towupper(letter); + } + } + return L'\0'; /*invalid path spec*/ +} + +static QSet get_physical_drive_ids(const wchar_t drive_letter) +{ + QSet physical_drives; + wchar_t driveName[8]; + _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:", drive_letter); + const HANDLE hDrive = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); + if (hDrive && (hDrive != INVALID_HANDLE_VALUE)) + { + const size_t BUFF_SIZE = sizeof(VOLUME_DISK_EXTENTS) + (32U * sizeof(DISK_EXTENT)); + VOLUME_DISK_EXTENTS *const diskExtents = (VOLUME_DISK_EXTENTS*)_malloca(BUFF_SIZE); + DWORD dwSize; + if (DeviceIoControl(hDrive, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 0, (LPVOID)diskExtents, (DWORD)BUFF_SIZE, (LPDWORD)&dwSize, NULL)) + { + for (DWORD index = 0U; index < diskExtents->NumberOfDiskExtents; ++index) + { + physical_drives.insert(diskExtents->Extents[index].DiskNumber); + } + } + _freea(diskExtents); + CloseHandle(hDrive); + } + return physical_drives; +} + +static bool incurs_seek_penalty(const DWORD device_id) +{ + wchar_t driveName[24]; + _snwprintf_s(driveName, 24, _TRUNCATE, L"\\\\?\\PhysicalDrive%u", device_id); + const HANDLE hDevice = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); + bool seeking_penalty = true; + if (hDevice && (hDevice != INVALID_HANDLE_VALUE)) + { + STORAGE_PROPERTY_QUERY spq; + DEVICE_SEEK_PENALTY_DESCRIPTOR dspd; + memset(&spq, 0, sizeof(STORAGE_PROPERTY_QUERY)); + spq.PropertyId = (STORAGE_PROPERTY_ID)StorageDeviceSeekPenaltyProperty; + spq.QueryType = PropertyStandardQuery; + DWORD dwSize; + if (DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, (LPVOID)&spq, (DWORD)sizeof(spq), (LPVOID)&dspd, (DWORD)sizeof(dspd), (LPDWORD)&dwSize, NULL)) + { + seeking_penalty = dspd.IncursSeekPenalty; + } + CloseHandle(hDevice); + } + return seeking_penalty; +} + +static bool is_fast_seeking_drive(const wchar_t drive_letter) +{ + bool fast_seeking = false; + const QSet physical_drive_ids = get_physical_drive_ids(drive_letter); + if (!physical_drive_ids.empty()) + { + fast_seeking = true; + for (QSet::const_iterator iter = physical_drive_ids.constBegin(); iter != physical_drive_ids.constEnd(); ++iter) + { + fast_seeking = fast_seeking && (!incurs_seek_penalty(*iter)); + } + } + return fast_seeking; +} + +MUtils::OS::drive_type_t MUtils::OS::get_drive_type(const QString &path, bool *fast_seeking) +{ + drive_type_t driveType = DRIVE_TYPE_ERR; + const wchar_t driveLetter = get_drive_letter(path); + if (driveLetter) + { + wchar_t driveName[8]; + _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:\\", driveLetter); + switch (GetDriveTypeW(driveName)) + { + case DRIVE_REMOVABLE: driveType = DRIVE_TYPE_FDD; break; + case DRIVE_FIXED: driveType = DRIVE_TYPE_HDD; break; + case DRIVE_REMOTE: driveType = DRIVE_TYPE_NET; break; + case DRIVE_CDROM: driveType = DRIVE_TYPE_OPT; break; + case DRIVE_RAMDISK: driveType = DRIVE_TYPE_RAM; break; + } + } + if (fast_seeking) + { + if (driveType == DRIVE_TYPE_HDD) + { + *fast_seeking = is_fast_seeking_drive(driveLetter); + } + else + { + *fast_seeking = (driveType == DRIVE_TYPE_RAM); + } + } + return driveType; +} + +/////////////////////////////////////////////////////////////////////////////// // SHELL OPEN /////////////////////////////////////////////////////////////////////////////// bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const QString ¶meters, const QString &directory, const bool explore) { - return ((int) ShellExecuteW((parent ? parent->winId() : NULL), (explore ? L"explore" : L"open"), MUTILS_WCHR(url), ((!parameters.isEmpty()) ? MUTILS_WCHR(parameters) : NULL), ((!directory.isEmpty()) ? MUTILS_WCHR(directory) : NULL), SW_SHOW)) > 32; + return ((int) ShellExecuteW((parent ? reinterpret_cast(parent->winId()) : NULL), (explore ? L"explore" : L"open"), MUTILS_WCHR(url), ((!parameters.isEmpty()) ? MUTILS_WCHR(parameters) : NULL), ((!directory.isEmpty()) ? MUTILS_WCHR(directory) : NULL), SW_SHOW)) > 32; } bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const bool explore) @@ -1213,10 +1535,26 @@ bool MUtils::OS::change_process_priority(const QProcess *proc, const int priorit // PROCESS ID /////////////////////////////////////////////////////////////////////////////// +quint32 MUtils::OS::process_id(void) +{ + return GetCurrentProcessId(); +} + quint32 MUtils::OS::process_id(const QProcess *const proc) { PROCESS_INFORMATION *procInf = proc->pid(); - return (procInf) ? procInf->dwProcessId : NULL; + return (procInf) ? procInf->dwProcessId : 0; +} + +quint32 MUtils::OS::thread_id(void) +{ + return GetCurrentThreadId(); +} + +quint32 MUtils::OS::thread_id(const QProcess *const proc) +{ + PROCESS_INFORMATION *procInf = proc->pid(); + return (procInf) ? procInf->dwThreadId : 0; } /////////////////////////////////////////////////////////////////////////////// @@ -1394,6 +1732,67 @@ bool MUtils::OS::wow64fsredir_revert(void *oldValue) // DEBUGGER CHECK /////////////////////////////////////////////////////////////////////////////// +QString MUtils::OS::get_envvar(const QString &name) +{ + wchar_t *buffer = NULL; + size_t requiredSize = 0, buffSize = 0; + QString result; + + forever + { + //Adjust the buffer size as required first! + if (buffSize < requiredSize) + { + if (buffer) + { + _freea(buffer); + } + if (!(buffer = (wchar_t*)_malloca(sizeof(wchar_t) * requiredSize))) + { + break; /*out of memory error!*/ + } + buffSize = requiredSize; + } + + //Try to fetch the environment variable now + const errno_t error = _wgetenv_s(&requiredSize, buffer, buffSize, MUTILS_WCHR(name)); + if(!error) + { + if (requiredSize > 0) + { + result = MUTILS_QSTR(buffer); + } + break; /*done*/ + } + else if (error != ERANGE) + { + break; /*somethging else went wrong!*/ + } + } + + if (buffer) + { + _freea(buffer); + buffSize = 0; + buffer = NULL; + } + + return result; +} + +bool MUtils::OS::set_envvar(const QString &name, const QString &value) +{ + if (!_wputenv_s(MUTILS_WCHR(name), MUTILS_WCHR(value))) + { + return true; + } + return false; +} + +/////////////////////////////////////////////////////////////////////////////// +// DEBUGGER CHECK +/////////////////////////////////////////////////////////////////////////////// + #if (!(MUTILS_DEBUG)) static __forceinline bool is_debugger_present(void) { @@ -1439,7 +1838,7 @@ static volatile bool g_debug_check = check_debugger_helper(); /////////////////////////////////////////////////////////////////////////////// static MUtils::Internal::CriticalSection g_fatal_exit_lock; -static volatile bool g_fatal_exit_flag = true; +static QAtomicInt g_fatal_exit_flag; static DWORD WINAPI fatal_exit_helper(LPVOID lpParameter) { @@ -1451,13 +1850,11 @@ void MUtils::OS::fatal_exit(const wchar_t* const errorMessage) { g_fatal_exit_lock.enter(); - if(!g_fatal_exit_flag) + if(!g_fatal_exit_flag.testAndSetOrdered(0, 1)) { return; /*prevent recursive invocation*/ } - g_fatal_exit_flag = false; - if(g_main_thread_id != GetCurrentThreadId()) { if(HANDLE hThreadMain = OpenThread(THREAD_SUSPEND_RESUME, FALSE, g_main_thread_id)) @@ -1466,10 +1863,14 @@ void MUtils::OS::fatal_exit(const wchar_t* const errorMessage) } } - if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID) errorMessage, 0, NULL)) + if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID)errorMessage, 0, NULL)) { WaitForSingleObject(hThread, INFINITE); } + else + { + fatal_exit_helper((LPVOID)errorMessage); + } for(;;) {