dsound: Lock the source buffer during duplication.

9cf7f954 · Andrew Eikum · Alexandre Julliard · ab735065 · 9cf7f954
Commit 9cf7f954 authored Jan 16, 2012 by Andrew Eikum Committed by Alexandre Julliard Jan 17, 2012
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buffer.c dlls/dsound/buffer.c +6 -0

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--- a/dlls/dsound/buffer.c
+++ b/dlls/dsound/buffer.c
@@ -1083,9 +1083,15 @@ HRESULT IDirectSoundBufferImpl_Duplicate(
        *ppdsb = NULL;
        return DSERR_OUTOFMEMORY;
    }
+
+    RtlAcquireResourceShared(&pdsb->lock, TRUE);
+
    CopyMemory(dsb, pdsb, sizeof(*dsb));

    dsb->pwfx = DSOUND_CopyFormat(pdsb->pwfx);
+
+    RtlReleaseResource(&pdsb->lock);
+
    if (dsb->pwfx == NULL) {
        HeapFree(GetProcessHeap(),0,dsb);
        *ppdsb = NULL;