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0904c05535
Summary: Now that all the pieces are in place, we can plumb the request context in. For now, this adds it to only one callback as I figure out more about it and tweak it until I have something satisfactory. There are some rough edges with it that I'm not entirely happy about, but as I change the notification callback to be more async, I'm hoping to make more convenient to use and less clanky. Reviewed By: fanzeyi Differential Revision: D23505508 fbshipit-source-id: d5f12e22a8f67dfa061b8ad82ea718582c323b45
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This software may be used and distributed according to the terms of the
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* GNU General Public License version 2.
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*/
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#include "eden/fs/inodes/RequestContext.h"
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#include <folly/logging/xlog.h>
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#include "eden/fs/notifications/Notifications.h"
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#include "eden/fs/telemetry/RequestMetricsScope.h"
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#include "eden/fs/utils/SystemError.h"
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using namespace folly;
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using namespace std::chrono;
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namespace facebook::eden {
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void RequestContext::startRequest(
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EdenStats* stats,
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ChannelThreadStats::HistogramPtr histogram,
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std::shared_ptr<RequestMetricsScope::LockedRequestWatchList>&
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requestWatches) {
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startTime_ = steady_clock::now();
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DCHECK(latencyHistogram_ == nullptr);
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latencyHistogram_ = histogram;
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stats_ = stats;
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channelThreadLocalStats_ = requestWatches;
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if (channelThreadLocalStats_) {
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requestMetricsScope_ = RequestMetricsScope(channelThreadLocalStats_.get());
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}
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}
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void RequestContext::finishRequest() {
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const auto now = steady_clock::now();
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const auto diff = now - startTime_;
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const auto diff_us = duration_cast<microseconds>(diff);
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const auto diff_ns = duration_cast<nanoseconds>(diff);
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stats_->getChannelStatsForCurrentThread().recordLatency(
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latencyHistogram_, diff_us);
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latencyHistogram_ = nullptr;
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stats_ = nullptr;
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if (channelThreadLocalStats_) {
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{
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auto temp = std::move(requestMetricsScope_);
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}
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channelThreadLocalStats_.reset();
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}
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if (auto pid = getClientPid(); pid.has_value()) {
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if (getEdenTopStats().didImportFromBackingStore()) {
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auto type = ProcessAccessLog::AccessType::FsChannelBackingStoreImport;
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pal_.recordAccess(*pid, type);
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}
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pal_.recordDuration(*pid, diff_ns);
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}
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}
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} // namespace facebook::eden
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