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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include <sstream>
#include "monitoring/iostats_context_imp.h"
#include "rocksdb/env.h"
namespace ROCKSDB_NAMESPACE {
#ifdef NIOSTATS_CONTEXT
// Should not be used because the counters are not thread-safe.
// Put here just to make get_iostats_context() simple without ifdef.
static IOStatsContext iostats_context;
#else
thread_local IOStatsContext iostats_context;
#endif
IOStatsContext* get_iostats_context() { return &iostats_context; }
void IOStatsContext::Reset() {
#ifndef NIOSTATS_CONTEXT
thread_pool_id = Env::Priority::TOTAL;
bytes_read = 0;
bytes_written = 0;
open_nanos = 0;
allocate_nanos = 0;
write_nanos = 0;
read_nanos = 0;
range_sync_nanos = 0;
prepare_write_nanos = 0;
fsync_nanos = 0;
logger_nanos = 0;
cpu_write_nanos = 0;
cpu_read_nanos = 0;
file_io_stats_by_temperature.Reset();
#endif //! NIOSTATS_CONTEXT
}
#define IOSTATS_CONTEXT_OUTPUT(counter) \
if (!exclude_zero_counters || counter > 0) { \
ss << #counter << " = " << counter << ", "; \
}
std::string IOStatsContext::ToString(bool exclude_zero_counters) const {
#ifdef NIOSTATS_CONTEXT
(void)exclude_zero_counters;
return "";
#else
std::ostringstream ss;
IOSTATS_CONTEXT_OUTPUT(thread_pool_id);
IOSTATS_CONTEXT_OUTPUT(bytes_read);
IOSTATS_CONTEXT_OUTPUT(bytes_written);
IOSTATS_CONTEXT_OUTPUT(open_nanos);
IOSTATS_CONTEXT_OUTPUT(allocate_nanos);
IOSTATS_CONTEXT_OUTPUT(write_nanos);
IOSTATS_CONTEXT_OUTPUT(read_nanos);
IOSTATS_CONTEXT_OUTPUT(range_sync_nanos);
IOSTATS_CONTEXT_OUTPUT(fsync_nanos);
IOSTATS_CONTEXT_OUTPUT(prepare_write_nanos);
IOSTATS_CONTEXT_OUTPUT(logger_nanos);
IOSTATS_CONTEXT_OUTPUT(cpu_write_nanos);
IOSTATS_CONTEXT_OUTPUT(cpu_read_nanos);
IOSTATS_CONTEXT_OUTPUT(file_io_stats_by_temperature.hot_file_bytes_read);
IOSTATS_CONTEXT_OUTPUT(file_io_stats_by_temperature.warm_file_bytes_read);
IOSTATS_CONTEXT_OUTPUT(file_io_stats_by_temperature.cold_file_bytes_read);
IOSTATS_CONTEXT_OUTPUT(file_io_stats_by_temperature.hot_file_read_count);
IOSTATS_CONTEXT_OUTPUT(file_io_stats_by_temperature.warm_file_read_count);
IOSTATS_CONTEXT_OUTPUT(file_io_stats_by_temperature.cold_file_read_count);
std::string str = ss.str();
str.erase(str.find_last_not_of(", ") + 1);
return str;
#endif //! NIOSTATS_CONTEXT
}
} // namespace ROCKSDB_NAMESPACE
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