public void Update()
{
WinApiImport.QueryPerformanceCounter(out PerfomanceCount);
WinApiImport.QueryPerformanceFrequency(out Frequency);
WinApiImport.GetSystemTimeAsFileTime(out var fileTime);
SystemFileAsFileTime = ((ulong)fileTime.dwLowDateTime << 32) + (ulong)fileTime.dwHighDateTime;
}
public static string Read(string name)
{
var hEvent = WinApiImport.CreateEvent(new LPSECURITY_ATTRIBUTES(), false, false, name);
if (hEvent == IntPtr.Zero)
{
return(string.Empty);
}
var ov = new OVERLAPPED {
hEvent = hEvent
};
var info = WinApiImport.GetMailslotInfo(slots[name], 0, out var size, out var _, 0);
if (info == IntPtr.Zero || size <= 0)
{
return(string.Empty);
}
var msgPointer = Marshal.AllocHGlobal(size);
var res = WinApiImport.ReadFile(slots[name], msgPointer, size, out var read, ref ov);
if (res == IntPtr.Zero)
{
return(string.Empty);
}
var message = Marshal.PtrToStringAnsi(msgPointer);
return(message);
}
public static void Close(string name)
{
var slot = slots[name];
WinApiImport.CloseHandle(slot);
slots.Remove(name);
files.Remove(name);
}
public static void Wait(IntPtr semaphore)
{
#if DEBUG
return;
#endif
while (WinApiImport.WaitForSingleObject(semaphore, int.MaxValue) != 0)
{
}
}
public static IntPtr Create(string name, int limit)
{
#if DEBUG
return(IntPtr.Zero);
#endif
var options = new LPSECURITY_ATTRIBUTES();
var semaphore = WinApiImport.CreateSemaphore(ref options, limit, limit, name);
return(semaphore);
}
public static bool Create(string name)
{
var slot = WinApiImport.CreateMailslot(SlotPrefix + name, 0, int.MaxValue, new LPSECURITY_ATTRIBUTES());
if (slot == invalidHandle)
{
return(false);
}
slots[name] = slot;
return(true);
}
public static bool Write(string name, string message)
{
var file = GetFile(name);
if (file == invalidHandle)
{
return(false);
}
var size = (message.Length + 1) * sizeof(char);
var res = WinApiImport.WriteFile(file, message, size, out var written, new OVERLAPPED());
if (res == IntPtr.Zero)
{
return(false);
}
return(true);
}
private static IntPtr GetFile(string name)
{
if (files.ContainsKey(name))
{
return(files[name]);
}
var file = WinApiImport.CreateFile(
SlotPrefix + name,
WinApiImport.GenericWriteAccess,
WinApiImport.FileShareRead,
new LPSECURITY_ATTRIBUTES(),
(int)FileMode.Open,
WinApiImport.FileAttributeNormal,
IntPtr.Zero);
if (file != invalidHandle)
{
files[name] = file;
}
return(file);
}
public static void Release(IntPtr semaphore)
{
#if !DEBUG
WinApiImport.ReleaseSemaphore(semaphore, 1, IntPtr.Zero);
#endif
}
public static void Close(IntPtr semaphore)
{
#if !DEBUG
WinApiImport.CloseHandle(semaphore);
#endif
}