mirror of https://github.com/facebook/rocksdb.git
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include <sstream>
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#include "monitoring/iostats_context_imp.h"
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#include "rocksdb/env.h"
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namespace ROCKSDB_NAMESPACE {
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#ifdef NIOSTATS_CONTEXT
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// Should not be used because the counters are not thread-safe.
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// Put here just to make get_iostats_context() simple without ifdef.
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static IOStatsContext iostats_context;
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#elif defined(ROCKSDB_SUPPORT_THREAD_LOCAL)
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__thread IOStatsContext iostats_context;
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#else
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#error \
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"No thread-local support. Disable iostats context with -DNIOSTATS_CONTEXT."
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#endif
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IOStatsContext* get_iostats_context() {
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return &iostats_context;
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}
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void IOStatsContext::Reset() {
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#ifndef NIOSTATS_CONTEXT
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thread_pool_id = Env::Priority::TOTAL;
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bytes_read = 0;
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bytes_written = 0;
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open_nanos = 0;
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allocate_nanos = 0;
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write_nanos = 0;
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read_nanos = 0;
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range_sync_nanos = 0;
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prepare_write_nanos = 0;
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fsync_nanos = 0;
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logger_nanos = 0;
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cpu_write_nanos = 0;
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cpu_read_nanos = 0;
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#endif //! NIOSTATS_CONTEXT
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}
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#define IOSTATS_CONTEXT_OUTPUT(counter) \
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if (!exclude_zero_counters || counter > 0) { \
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ss << #counter << " = " << counter << ", "; \
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}
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std::string IOStatsContext::ToString(bool exclude_zero_counters) const {
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#ifdef NIOSTATS_CONTEXT
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(void)exclude_zero_counters;
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return "";
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#else
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std::ostringstream ss;
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IOSTATS_CONTEXT_OUTPUT(thread_pool_id);
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IOSTATS_CONTEXT_OUTPUT(bytes_read);
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IOSTATS_CONTEXT_OUTPUT(bytes_written);
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IOSTATS_CONTEXT_OUTPUT(open_nanos);
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IOSTATS_CONTEXT_OUTPUT(allocate_nanos);
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IOSTATS_CONTEXT_OUTPUT(write_nanos);
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IOSTATS_CONTEXT_OUTPUT(read_nanos);
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IOSTATS_CONTEXT_OUTPUT(range_sync_nanos);
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IOSTATS_CONTEXT_OUTPUT(fsync_nanos);
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IOSTATS_CONTEXT_OUTPUT(prepare_write_nanos);
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IOSTATS_CONTEXT_OUTPUT(logger_nanos);
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IOSTATS_CONTEXT_OUTPUT(cpu_write_nanos);
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IOSTATS_CONTEXT_OUTPUT(cpu_read_nanos);
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std::string str = ss.str();
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str.erase(str.find_last_not_of(", ") + 1);
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return str;
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#endif //! NIOSTATS_CONTEXT
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}
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} // namespace ROCKSDB_NAMESPACE
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