altman08 commented on code in PR #3686:
URL: https://github.com/apache/brpc/pull/3686#discussion_r4420455430
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src/butil/iobuf.h:
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@@ -534,6 +534,20 @@ class IOBufCutter {
// Returns pointer to the character, nullptr on empty
const void* fetch1();
+ // Peek the unconsumed part of the current reference without copying.
+ // Load the next reference if needed; return empty on exhausted input.
+ StringPiece front_block();
Review Comment:
My use case is to peek at N bytes without consuming them. I first check
whether the contiguous data at the current cursor is large enough. If so, I use
it directly; otherwise, I fall back to fetch() with a temporary buffer. That
way, I only need to prepare the temporary buffer when the data spans multiple
blocks.
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