4dfae01cc6
Motivation: Channels can read `ChannelOptions.maxMessagesPerRead` times from a socket in each read cycle. They typically re-use the same buffer for each read and rely on it CoWing if necessary. If we read more than once in a cycle then we may CoW the buffer. Instead of reusing one buffer we can reuse a pool of buffers limited by `maxMessagesPerRead` and cycle through each, reducing the chance of CoWing the buffers. Modifications: - Extend `RecvByteBufferAllocator` to provide the size of the next buffer with a default implementation returning `nil`. - Add an recv buffer pool which lazily grows up to a fixed size and attempts to reuse buffers where possible if doing so avoids CoWing. Results: Fewer allocations |
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| .. | ||
| alloc-limits-from-test-output | ||
| boxed-existentials.d | ||
| generate-bytebuffer-multi-int.sh | ||
| git.commit.template | ||
| lldb-smoker | ||
| make-single-file-spm | ||
| malloc-aggregation.d | ||
| stackdiff-dtrace.py | ||
| update-alloc-limits-to-last-completed-ci-build | ||