pcpp/Timer.java at master · bidh/pcpp · GitHub

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// Crude wall clock timing utility, measuring time in seconds

classTimer {
privatelongstart = 0, spent = 0;
publicTimer() { play(); }
publicdoublecheck() { return (start==0 ? spent : System.nanoTime()-start+spent)/1e9; }
publicvoidpause() { if (start != 0) { spent += System.nanoTime()-start; start = 0; } }
publicvoidplay() { if (start == 0) start = System.nanoTime(); }
}