Method shrink_input_buffer

cpp/fory/util/buffer.h:144–148

Best-effort stream buffer compaction entry point. Stage 1 guard: avoid calling into stream shrinking for very small progress. Stage 2 guard lives in InputStream::shrink_buffer(), which can decide based on stream-specific configured buffer size.

  // Stage 2 guard lives in InputStream::shrink_buffer(), which can decide based
  // on stream-specific configured buffer size.
  FORY_ALWAYS_INLINE void shrink_input_buffer() {
    if (FORY_PREDICT_FALSE(input_stream_ != nullptr && reader_index_ > 4096)) {
      input_stream_->shrink_buffer();
    }
  }

  FORY_ALWAYS_INLINE uint32_t writer_index() { return writer_index_; }