Merge pull request #54 from DmitryOlshansky/windows-io

Use *Ex file IO functions for use with IOCP

Author: DmitryOlshansky

src/photon/windows/core.d

@@ -787,13 +787,14 @@ public @trusted nothrow {
             }
             overlapped.hEvent = ev;
         }
-        if (!WriteFile(h, buf, cast(uint)count, null, &overlapped) && GetLastError() != ERROR_IO_PENDING) {
-            return -1;
-        }
         if (currentFiber) {
+            if (!WriteFileEx(h, buf, cast(uint)count, &overlapped, null)) return -1;
             FiberExt.yield();
             return currentFiber.bytesTransfered;
         } else {
+            if (!WriteFile(h, buf, cast(uint)count, null, &overlapped) && GetLastError() != ERROR_IO_PENDING) {
+                return -1;
+            }
             WaitForSingleObject(ev, INFINITE);
             return count;
         }
@@ -820,11 +821,12 @@ public @trusted nothrow {
             }
             overlapped.hEvent = ev;
         }
-        if (!ReadFile(h, buf, cast(uint)count, null, &overlapped) && GetLastError() != ERROR_IO_PENDING) return -1;
         if (currentFiber) {
+            if (!ReadFileEx(h, buf, cast(uint)count, &overlapped, null)) return -1;
             FiberExt.yield();
             return currentFiber.bytesTransfered;
         } else {
+            if (!ReadFile(h, buf, cast(uint)count, null, &overlapped) && GetLastError() != ERROR_IO_PENDING) return -1;
             WaitForSingleObject(ev, INFINITE);
             return count;
         }