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The GCN port outputs stdout and stderr via a shared-memory interface. Previously the buffer was limited to 1000 write operations, which was enough for testing purposes, but easy to exhaust. This patch implements a new circular buffering system allowing a greater amount of output. The interface must allow hundreds of hardware threads to output simultaneously. The new limit is UINT32_MAX write operations. Unfortunately, there's no way to tell if the host side has also been updated. This code will misbehave unless the gcn-run from GCC is also updated (although it's fine the other way around), but that patch has already been committed. OK? Andrew Stubbs Mentor Graphics / CodeSourcery
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