Method dump_and_destroy

src/brpc/span.cpp:911–916

The round parameter is required by bvar::Collected interface but unused here. Other implementations (e.g., SampledRequest in rpc_dump.cpp) use it to detect new batches and trigger per-round operations like reloading gflags or switching output files. SpanContainer doesn't need batch-level operations since it writes directly to leveldb without buffering or configuration reloading.

// output files. SpanContainer doesn't need batch-level operations since it writes
// directly to leveldb without buffering or configuration reloading.
void SpanContainer::dump_and_destroy(size_t round) {
    if (_span) {
        _span->dump_to_db();
    }
    destroy();
}

void SpanContainer::submit(int64_t cpuwide_us) {
    bvar::Collected::submit(cpuwide_us);