public StubReference(string dllPath)
{
// according to MSDN, LoadLibrary requires "\"
dllPath = dllPath.Replace("/", @"\");
this.library = Unmanaged.LoadLibrary(dllPath);
if (this.library == IntPtr.Zero)
{
throw new Exception(
String.Format("Could not load library '{0}' . Error code:{1}", dllPath, Unmanaged.GetLastError()));
}
}
Acquire()
{
if (Unmanaged.WaitForSingleObject(this.hMutex, INFINITE) == ABANDONED)
{
Console.WriteLine("warning: mutex abandoned\n{0}", System.Environment.StackTrace);
}
this.owner = Thread.CurrentThread.ManagedThreadId;
this.count += 1;
return(this.count);
}
Dispose(bool disposing)
{
if (this.alive)
{
this.alive = false;
foreach (IntPtr l in this.handles)
{
Unmanaged.FreeLibrary(l);
}
this.handles.Clear();
}
}
IC_file_dealloc(IntPtr ptr)
{
if (this.FILEs.ContainsKey(ptr))
{
Unmanaged.fclose(this.FILEs[ptr]);
this.FILEs.Remove(ptr);
}
IntPtr _type = CPyMarshal.ReadPtrField(ptr, typeof(PyObject), "ob_type");
dgt_void_ptr freeDgt = (dgt_void_ptr)
CPyMarshal.ReadFunctionPtrField(
_type, typeof(PyTypeObject), "tp_free", typeof(dgt_void_ptr));
freeDgt(ptr);
}
Dispose(bool disposing)
{
if (!this.alive)
{
return;
}
this.alive = false;
while (this.exitfuncs.Count > 0)
{
this.exitfuncs.Pop()();
}
PythonDictionary modules = (PythonDictionary)this.python.SystemState.Get__dict__()["modules"];
if (!modules.Contains("numpy"))
{
// TODO: FIXME?
// I don't know what it is about numpy, but using it heavily
// makes this step extremely flaky: that's, like, BSOD flaky.
// OTOH, even attempting this operation is very optimistic
// indeed, and it's only really here so that I can repeatedly
// construct/destroy mappers -- without leaking *too* much --
// during test runs. In the wild, all this will be reclaimed
// by the operating system at process shutdown time anyway.
this.map.MapOverBridgePtrs(new PtrFunc(this.DumpPtr));
}
this.allocator.FreeAll();
foreach (IntPtr FILE in this.FILEs.Values)
{
Unmanaged.fclose(FILE);
}
if (this.stub != null)
{
PythonCalls.Call(this.removeSysHacks);
modules.Remove("mmap");
modules.Remove("posix");
modules.Remove("_csv");
if (modules.Contains("csv"))
{
modules.Remove("csv");
}
this.importer.Dispose();
this.stub.Dispose();
}
}
Init(dgt_getfuncptr addressGetter, dgt_registerdata dataSetter)
{
IntPtr initFP = Unmanaged.GetProcAddress(this.library, "init");
InitDelegate initDgt = (InitDelegate)Marshal.GetDelegateForFunctionPointer(initFP, typeof(InitDelegate));
IntPtr addressGetterFP = Marshal.GetFunctionPointerForDelegate(addressGetter);
IntPtr dataSetterFP = Marshal.GetFunctionPointerForDelegate(dataSetter);
initDgt(addressGetterFP, dataSetterFP);
// yes, these do appear to be necessary: rare NullReferenceExceptions will be thrown
// from the initDgt call otherwise. run functionalitytest in a loop to observe.
GC.KeepAlive(addressGetter);
GC.KeepAlive(dataSetter);
}
Dispose(bool disposing)
{
if (this.hMutex == IntPtr.Zero)
{
return;
}
while (this.count > 0)
{
this.Release();
}
Unmanaged.CloseHandle(this.hMutex);
this.hMutex = IntPtr.Zero;
}
Release()
{
if (!this.IsAcquired)
{
throw new LockException("you can't release a lock you don't own");
}
this.count -= 1;
if (this.count == 0)
{
this.owner = -1;
}
if (Unmanaged.ReleaseMutex(this.hMutex) == 0)
{
throw new LockException("ReleaseMutex failed, even though we're pretty certain we do own this lock");
}
}
TryAcquire()
{
int result = Unmanaged.WaitForSingleObject(this.hMutex, 0);
if (result == TIMEOUT)
{
return(false);
}
if (result == ABANDONED)
{
Console.WriteLine("warning: mutex abandoned\n{0}", System.Environment.StackTrace);
}
this.owner = Thread.CurrentThread.ManagedThreadId;
this.count += 1;
return(true);
}
public StubReference(string dllPath)
{
this.library = Unmanaged.LoadLibrary(dllPath);
}
Load(string path)
{
// the ActCtx stuff allows us to import .pyds which link to msvcr90 but don't have manifests
// implementation explained in stub/ic_msvcr90.c
IntPtr cookie = Unmanaged._Py_ActivateActCtx();
IntPtr l = Unmanaged.LoadLibrary(path);
Unmanaged._Py_DeactivateActCtx(cookie);
if (l == IntPtr.Zero)
{
throw new Exception(
String.Format("Could not load library '{0}' . Error code:{1}", path, Unmanaged.GetLastError()));
}
this.handles.Add(l);
string funcName = "init" + Path.GetFileNameWithoutExtension(path);
IntPtr funcPtr = Unmanaged.GetProcAddress(l, funcName);
if (funcPtr == IntPtr.Zero)
{
throw new Exception(
String.Format("Could not find module init function {0} in dll {1}", funcName, path));
}
PydInit_Delegate initmodule = (PydInit_Delegate)Marshal.GetDelegateForFunctionPointer(
funcPtr, typeof(PydInit_Delegate));
initmodule();
}
public Lock()
{
this.hMutex = Unmanaged.CreateMutex(IntPtr.Zero, 0, IntPtr.Zero);
this.count = 0;
this.owner = -1;
}
