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#include "rar.hpp"
static int SleepTime=0;
void InitSystemOptions(int SleepTime)
{
::SleepTime=SleepTime;
}
#if !defined(SFX_MODULE)
void SetPriority(int Priority)
{
#ifdef _WIN_ALL
uint PriorityClass;
int PriorityLevel;
if (Priority<1 || Priority>15)
return;
if (Priority==1)
{
PriorityClass=IDLE_PRIORITY_CLASS;
PriorityLevel=THREAD_PRIORITY_IDLE;
// Background mode for Vista, can be slow for many small files.
// if (WinNT()>=WNT_VISTA)
// SetPriorityClass(GetCurrentProcess(),PROCESS_MODE_BACKGROUND_BEGIN);
}
else
if (Priority<7)
{
PriorityClass=IDLE_PRIORITY_CLASS;
PriorityLevel=Priority-4;
}
else
if (Priority==7)
{
PriorityClass=BELOW_NORMAL_PRIORITY_CLASS;
PriorityLevel=THREAD_PRIORITY_ABOVE_NORMAL;
}
else
if (Priority<10)
{
PriorityClass=NORMAL_PRIORITY_CLASS;
PriorityLevel=Priority-7;
}
else
if (Priority==10)
{
PriorityClass=ABOVE_NORMAL_PRIORITY_CLASS;
PriorityLevel=THREAD_PRIORITY_NORMAL;
}
else
{
PriorityClass=HIGH_PRIORITY_CLASS;
PriorityLevel=Priority-13;
}
SetPriorityClass(GetCurrentProcess(),PriorityClass);
SetThreadPriority(GetCurrentThread(),PriorityLevel);
#ifdef RAR_SMP
ThreadPool::SetPriority(PriorityLevel);
#endif
#endif
}
#endif
// Monotonic clock. Like clock(), returns time passed in CLOCKS_PER_SEC items.
// In Android 5+ and Unix usual clock() returns time spent by all threads
// together, so we cannot use it to measure time intervals anymore.
clock_t MonoClock()
{
return clock();
}
void Wait()
{
if (ErrHandler.UserBreak)
ErrHandler.Exit(RARX_USERBREAK);
#if defined(_WIN_ALL) && !defined(SFX_MODULE)
if (SleepTime!=0)
{
static clock_t LastTime=MonoClock();
if (MonoClock()-LastTime>10*CLOCKS_PER_SEC/1000)
{
Sleep(SleepTime);
LastTime=MonoClock();
}
}
#endif
#if defined(_WIN_ALL)
// Reset system sleep timer to prevent system going sleep.
SetThreadExecutionState(ES_SYSTEM_REQUIRED);
#endif
}
#ifdef _WIN_ALL
bool SetPrivilege(LPCTSTR PrivName)
{
bool Success=false;
HANDLE hToken;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken))
{
TOKEN_PRIVILEGES tp;
tp.PrivilegeCount = 1;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (LookupPrivilegeValue(NULL,PrivName,&tp.Privileges[0].Luid) &&
AdjustTokenPrivileges(hToken, FALSE, &tp, 0, NULL, NULL) &&
GetLastError() == ERROR_SUCCESS)
Success=true;
CloseHandle(hToken);
}
return Success;
}
#endif
#if defined(_WIN_ALL) && !defined(SFX_MODULE)
void Shutdown(POWER_MODE Mode)
{
SetPrivilege(SE_SHUTDOWN_NAME);
if (Mode==POWERMODE_OFF)
ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,SHTDN_REASON_FLAG_PLANNED);
if (Mode==POWERMODE_SLEEP)
SetSuspendState(FALSE,FALSE,FALSE);
if (Mode==POWERMODE_HIBERNATE)
SetSuspendState(TRUE,FALSE,FALSE);
if (Mode==POWERMODE_RESTART)
ExitWindowsEx(EWX_REBOOT|EWX_FORCE,SHTDN_REASON_FLAG_PLANNED);
}
bool ShutdownCheckAnother(bool Open)
{
const wchar *EventName=L"rar -ioff";
static HANDLE hEvent=NULL;
bool Result=false; // Return false if no other RAR -ioff are running.
if (Open) // Create or open the event.
hEvent=CreateEvent(NULL,FALSE,FALSE,EventName);
else
{
if (hEvent!=NULL)
CloseHandle(hEvent); // Close our event.
// Check if other copies still own the event. While race conditions
// are possible, they are improbable and their harm is minimal.
hEvent=CreateEvent(NULL,FALSE,FALSE,EventName);
Result=GetLastError()==ERROR_ALREADY_EXISTS;
if (hEvent!=NULL)
CloseHandle(hEvent);
}
return Result;
}
#endif
#if defined(_WIN_ALL)
// Load library from Windows System32 folder. Use this function to prevent
// loading a malicious code from current folder or same folder as exe.
HMODULE WINAPI LoadSysLibrary(const wchar *Name)
{
std::vector<wchar> SysDir(MAX_PATH);
if (GetSystemDirectory(SysDir.data(),(UINT)SysDir.size())==0)
return nullptr;
std::wstring FullName;
MakeName(SysDir.data(),Name,FullName);
return LoadLibrary(FullName.c_str());
}
bool IsUserAdmin()
{
SID_IDENTIFIER_AUTHORITY NtAuthority = SECURITY_NT_AUTHORITY;
PSID AdministratorsGroup;
BOOL b = AllocateAndInitializeSid(&NtAuthority,2,SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &AdministratorsGroup);
if (b)
{
if (!CheckTokenMembership( NULL, AdministratorsGroup, &b))
b = FALSE;
FreeSid(AdministratorsGroup);
}
return b!=FALSE;
}
#endif
#ifdef USE_SSE
SSE_VERSION _SSE_Version=GetSSEVersion();
SSE_VERSION GetSSEVersion()
{
#ifdef _MSC_VER
int CPUInfo[4];
__cpuid(CPUInfo, 0);
// Maximum supported cpuid function.
uint MaxSupported=CPUInfo[0];
if (MaxSupported>=7)
{
__cpuid(CPUInfo, 7);
if ((CPUInfo[1] & 0x20)!=0)
return SSE_AVX2;
}
if (MaxSupported>=1)
{
__cpuid(CPUInfo, 1);
if ((CPUInfo[2] & 0x80000)!=0)
return SSE_SSE41;
if ((CPUInfo[2] & 0x200)!=0)
return SSE_SSSE3;
if ((CPUInfo[3] & 0x4000000)!=0)
return SSE_SSE2;
if ((CPUInfo[3] & 0x2000000)!=0)
return SSE_SSE;
}
#elif defined(__GNUC__)
if (__builtin_cpu_supports("avx2"))
return SSE_AVX2;
if (__builtin_cpu_supports("sse4.1"))
return SSE_SSE41;
if (__builtin_cpu_supports("ssse3"))
return SSE_SSSE3;
if (__builtin_cpu_supports("sse2"))
return SSE_SSE2;
if (__builtin_cpu_supports("sse"))
return SSE_SSE;
#endif
return SSE_NONE;
}
#endif
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