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Replace UptimeTimer with UptimeClock

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* UptimeClock is a chrono-compatible seconds-precision clock.

* Like UptimeTimer, its purpose is to make it possible for clients
  to query the uptime thousands of times per second without a
  significant performance hit.

* UptimeClock decouples itself from LoadManager by managing its
  own once-per-second update loop.

* Clients now traffic in chrono time_points and durations instead
  of int.
This commit is contained in:
Howard Hinnant
2018-04-23 13:46:37 -04:00
committed by seelabs
parent 717f874767
commit 7d163a45dc
14 changed files with 159 additions and 186 deletions
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21
src/ripple/rpc/handlers/GetCounts.cpp
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@@ -22,7 +22,7 @@
#include <ripple/app/ledger/LedgerMaster.h>
#include <ripple/app/main/Application.h>
#include <ripple/app/misc/NetworkOPs.h>
#include <ripple/basics/UptimeTimer.h>
#include <ripple/basics/UptimeClock.h>
#include <ripple/core/DatabaseCon.h>
#include <ripple/json/json_value.h>
#include <ripple/ledger/CachedSLEs.h>
@@ -36,10 +36,11 @@
namespace ripple {
static
void textTime (
std::string& text, int& seconds, const char* unitName, int unitVal)
void
textTime(std::string& text, UptimeClock::time_point& seconds,
const char* unitName, std::chrono::seconds unitVal)
{
int i = seconds / unitVal;
auto i = seconds.time_since_epoch() / unitVal;
if (i == 0)
return;
@@ -111,12 +112,12 @@ Json::Value doGetCounts (RPC::Context& context)
ret[jss::treenode_track_size] = context.app.family().treecache().getTrackSize();
std::string uptime;
int s = UptimeTimer::getInstance ().getElapsedSeconds ();
textTime (uptime, s, "year", 365 * 24 * 60 * 60);
textTime (uptime, s, "day", 24 * 60 * 60);
textTime (uptime, s, "hour", 60 * 60);
textTime (uptime, s, "minute", 60);
textTime (uptime, s, "second", 1);
auto s = UptimeClock::now();
textTime (uptime, s, "year", 365 * 24h);
textTime (uptime, s, "day", 24h);
textTime (uptime, s, "hour", 1h);
textTime (uptime, s, "minute", 1min);
textTime (uptime, s, "second", 1s);
ret[jss::uptime] = uptime;
ret[jss::node_writes] = context.app.getNodeStore().getStoreCount();