1 files changed, 62 insertions, 0 deletions
diff --git a/src/rocksdb/monitoring/iostats_context_imp.h b/src/rocksdb/monitoring/iostats_context_imp.h
new file mode 100644
index 000000000..a0b4292df
--- /dev/null
+++ b/src/rocksdb/monitoring/iostats_context_imp.h
@@ -0,0 +1,62 @@
+//  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).
+//
+#pragma once
+#include "monitoring/perf_step_timer.h"
+#include "rocksdb/iostats_context.h"
+
+#if !defined(NIOSTATS_CONTEXT)
+namespace ROCKSDB_NAMESPACE {
+extern thread_local IOStatsContext iostats_context;
+}  // namespace ROCKSDB_NAMESPACE
+
+// increment a specific counter by the specified value
+#define IOSTATS_ADD(metric, value)        \
+  if (!iostats_context.disable_iostats) { \
+    iostats_context.metric += value;      \
+  }
+
+// reset a specific counter to zero
+#define IOSTATS_RESET(metric) (iostats_context.metric = 0)
+
+// reset all counters to zero
+#define IOSTATS_RESET_ALL() (iostats_context.Reset())
+
+#define IOSTATS_SET_THREAD_POOL_ID(value) \
+  (iostats_context.thread_pool_id = value)
+
+#define IOSTATS_THREAD_POOL_ID() (iostats_context.thread_pool_id)
+
+#define IOSTATS(metric) (iostats_context.metric)
+
+// Declare and set start time of the timer
+#define IOSTATS_TIMER_GUARD(metric)                                     \
+  PerfStepTimer iostats_step_timer_##metric(&(iostats_context.metric)); \
+  iostats_step_timer_##metric.Start();
+
+// Declare and set start time of the timer
+#define IOSTATS_CPU_TIMER_GUARD(metric, clock)         \
+  PerfStepTimer iostats_step_timer_##metric(           \
+      &(iostats_context.metric), clock, true,          \
+      PerfLevel::kEnableTimeAndCPUTimeExceptForMutex); \
+  iostats_step_timer_##metric.Start();
+
+#define IOSTATS_SET_DISABLE(disable) (iostats_context.disable_iostats = disable)
+
+#else  // !NIOSTATS_CONTEXT
+
+#define IOSTATS_ADD(metric, value)
+#define IOSTATS_ADD_IF_POSITIVE(metric, value)
+#define IOSTATS_RESET(metric)
+#define IOSTATS_RESET_ALL()
+#define IOSTATS_SET_THREAD_POOL_ID(value)
+#define IOSTATS_THREAD_POOL_ID()
+#define IOSTATS(metric) 0
+#define IOSTATS_SET_DISABLE(disable)
+
+#define IOSTATS_TIMER_GUARD(metric)
+#define IOSTATS_CPU_TIMER_GUARD(metric, clock) static_cast<void>(clock)
+
+#endif  // !NIOSTATS_CONTEXT