[RPC] Add an uptime command that displays the amount of time that bitcoind has been running

4 files changed, 30 insertions, 3 deletions

diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index 3dfb51ccfa..33f4535ee2 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -26,7 +26,6 @@
 
 class CBlockIndex;
 
-static const int64_t nClientStartupTime = GetTime();
 static int64_t nLastHeaderTipUpdateNotification = 0;
 static int64_t nLastBlockTipUpdateNotification = 0;
 
@@ -238,7 +237,7 @@ bool ClientModel::isReleaseVersion() const
 
 QString ClientModel::formatClientStartupTime() const
 {
-    return QDateTime::fromTime_t(nClientStartupTime).toString();
+    return QDateTime::fromTime_t(GetStartupTime()).toString();
 }
 
 QString ClientModel::dataDir() const
diff --git a/src/rpc/server.cpp b/src/rpc/server.cpp
index 1a04ce2b47..c320d20453 100644
--- a/src/rpc/server.cpp
+++ b/src/rpc/server.cpp
@@ -258,6 +258,22 @@ UniValue stop(const JSONRPCRequest& jsonRequest)
     return "Bitcoin server stopping";
 }
 
+UniValue uptime(const JSONRPCRequest& jsonRequest)
+{
+    if (jsonRequest.fHelp || jsonRequest.params.size() > 1)
+        throw std::runtime_error(
+                "uptime\n"
+                        "\nReturns the total uptime of the server.\n"
+                        "\nResult:\n"
+                        "ttt        (numeric) The number of seconds that the server has been running\n"
+                        "\nExamples:\n"
+                + HelpExampleCli("uptime", "")
+                + HelpExampleRpc("uptime", "")
+        );
+
+    return GetTime() - GetStartupTime();
+}
+
 /**
  * Call Table
  */
@@ -267,6 +283,7 @@ static const CRPCCommand vRPCCommands[] =
     /* Overall control/query calls */
     { "control",            "help",                   &help,                   true,  {"command"}  },
     { "control",            "stop",                   &stop,                   true,  {}  },
+    { "control",            "uptime",                 &uptime,                 true,  {}  },
 };
 
 CRPCTable::CRPCTable()
diff --git a/src/util.cpp b/src/util.cpp
index 20a8082017..0e1464e590 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -84,6 +84,8 @@
 #include <openssl/rand.h>
 #include <openssl/conf.h>
 
+// Application startup time (used for uptime calculation)
+const int64_t nStartupTime = GetTime();
 
 const char * const BITCOIN_CONF_FILENAME = "bitcoin.conf";
 const char * const BITCOIN_PID_FILENAME = "bitcoind.pid";
@@ -889,3 +891,9 @@ std::string CopyrightHolders(const std::string& strPrefix)
     }
     return strCopyrightHolders;
 }
+
+// Obtain the application startup time (used for uptime calculation)
+int64_t GetStartupTime()
+{
+    return nStartupTime;
+}
diff --git a/src/util.h b/src/util.h
index a4d7aa4db8..824ad51ac4 100644
--- a/src/util.h
+++ b/src/util.h
@@ -5,7 +5,7 @@
 
 /**
  * Server/client environment: argument handling, config file parsing,
- * logging, thread wrappers
+ * logging, thread wrappers, startup time
  */
 #ifndef BITCOIN_UTIL_H
 #define BITCOIN_UTIL_H
@@ -29,6 +29,9 @@
 
 #include <boost/signals2/signal.hpp>
 
+// Application startup time (used for uptime calculation)
+int64_t GetStartupTime();
+
 static const bool DEFAULT_LOGTIMEMICROS = false;
 static const bool DEFAULT_LOGIPS        = false;
 static const bool DEFAULT_LOGTIMESTAMPS = true;