X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fwin32%2FOSThreads.c;h=44db42fef4516e9e4f4fa0e7580481204cf543c4;hb=fff1f6194c3c39de53cd645bda9865fb131b1c68;hp=410346916bddde9122bbd95a906fac5cdb602ce7;hpb=4c22e67ec95fd5fb54dbd758325f562831e7d19d;p=ghc-hetmet.git

diff --git a/rts/win32/OSThreads.c b/rts/win32/OSThreads.c
index 4103469..44db42f 100644
--- a/rts/win32/OSThreads.c
+++ b/rts/win32/OSThreads.c
@@ -86,7 +86,7 @@ waitCondition ( Condition* pCond, Mutex* pMut )
 void
 yieldThread()
 {
-  Sleep(0);
+  SwitchToThread();
   return;
 }
 
@@ -247,9 +247,45 @@ getNumberOfProcessors (void)
 }
 
 void
-setThreadAffinity (nat n STG_UNUSED, nat m STG_UNUSED)
+setThreadAffinity (nat n, nat m) // cap N of M
 {
-    /* ToDo */
+    HANDLE hThread;
+    DWORD_PTR mask, r;  // 64-bit win is required to handle more than 32 procs
+    nat nproc, i;
+
+    hThread = GetCurrentThread();
+
+    nproc = getNumberOfProcessors();
+
+    mask = 0;
+    for (i = n; i < nproc; i+=m) {
+        mask |= 1 << i;
+    }
+
+    r = SetThreadAffinityMask(hThread, mask);
+    if (r == 0) {
+	sysErrorBelch("SetThreadAffinity");
+        stg_exit(EXIT_FAILURE);
+    }
+}
+
+typedef BOOL (WINAPI *PCSIO)(HANDLE);
+
+void
+interruptOSThread (OSThreadId id)
+{
+    HANDLE hdl;
+    PCSIO pCSIO;
+    if (!(hdl = OpenThread(THREAD_TERMINATE,FALSE,id))) {
+        sysErrorBelch("interruptOSThread: OpenThread");
+        stg_exit(EXIT_FAILURE);
+    }
+    pCSIO = (PCSIO) GetProcAddress(GetModuleHandle(TEXT("Kernel32.dll")), "CancelSynchronousIo");
+    if ( NULL != pCSIO ) {
+        pCSIO(hdl);
+    } else {
+        // Nothing to do, unfortunately
+    }
 }
 
 #else /* !defined(THREADED_RTS) */