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Imported Upstream version 6.4.0.178

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Former-commit-id: 910a7a10ba8608254000363489287c006b4ad47a
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2019-08-24 08:42:41 +00:00
parent 6855a3a773
commit 46fd284812
111 changed files with 1838 additions and 930 deletions
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12
mcs/class/corlib/System.Runtime.InteropServices/SafeHandle.cs
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@ -211,12 +211,12 @@ namespace System.Runtime.InteropServices
else
perform_release = true;
/* Attempt the update to the new state, fail and retry if the initial
* state has been modified in the meantime. Decrement the ref count by
* substracting SH_RefCountOne from the state then OR in the bits for
* Dispose (if that's the reason for the Release) and closed (if the
* initial ref count was 1). */
new_state = (old_state & RefCount_Mask) - RefCount_One;
// Not closed, let's propose an update (to the ref count, just add
// StateBits.RefCountOne to the state to effectively add 1 to the ref count).
// Continue doing this until the update succeeds (because nobody
// modifies the state field between the read and write operations) or
// the state moves to closed.
new_state = old_state - RefCount_One;
if ((old_state & RefCount_Mask) == RefCount_One)
new_state |= (int) State.Closed;
if (dispose)