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authorCorinna Vinschen <corinna@vinschen.de>2022-08-22 12:01:15 +0200
committerCorinna Vinschen <corinna@vinschen.de>2022-08-22 12:01:15 +0200
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Cygwin: smallprint.cc: Convert tmpbuf to lockless
The old technique was from a time when we had to reduce stack pressure by moving 64K buffers elsewhere. It was implemented using a static global buffer, guarded by a muto. However, that adds a lock which may unnecessarily serialize threads. Use Windows heap buffers per invocation instead. HeapAlloc/HeapFree are pretty fast, scale nicely in multithreaded scenarios and don't serialize threads unnecessarily. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
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