Changeset 117:67253d52b284 in lemon-0.x for src/work

Timestamp:

02/22/04 16:17:58 (20 years ago)

Author:

Alpar Juttner

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@152

Message:

Timer class for measuring user/system time added.

Location:

src/work

Files:

• alpar/f_ed_ka_demo.cc (modified) (1 diff)
• marci/time_measure.h (modified) (2 diffs)

src/work/alpar/f_ed_ka_demo.cc

@@ -32 +32 @@
   int ret;
   double pre_time=currTime();
+  Timer ts;
+  
   ret = maxFlow(G,flow,cap,s,t);
   double post_time=currTime();
+  std::cout << "ellapsed time:" << ts << std::endl;
+
   //std::cout << "maximum flow: "<< std::endl;
   //for(EachEdgeIt e=G.first<EachEdgeIt>(); e.valid(); ++e) { 

src/work/marci/time_measure.h

@@ -4 +4 @@
 
 #include <sys/time.h>
+#include <sys/times.h>
+#include <fstream>
+#include <iostream>
 
 double currTime() {
@@ -12 +15 @@
 }
 
+class TimeStamp
+{
+  tms ts;
+public:
+
+  tms &getTms() {return ts;}
+  const tms &getTms() const {return ts;}
+
+  void stamp() {times(&ts);}
+  TimeStamp() { ts.tms_utime=ts.tms_stime=ts.tms_cutime=ts.tms_cstime=0;}
+  TimeStamp(void *) { stamp();}
+  
+  TimeStamp &operator+=(const TimeStamp &b)
+  {
+    ts.tms_utime+=b.ts.tms_utime;
+    ts.tms_stime+=b.ts.tms_stime;
+    ts.tms_cutime+=b.ts.tms_cutime;
+    ts.tms_cstime+=b.ts.tms_cstime;
+    return *this;
+  }
+  TimeStamp operator+(const TimeStamp &b) const
+  {
+    TimeStamp t(*this);
+    return t+=b;
+  }
+  TimeStamp &operator-=(const TimeStamp &b)
+  {
+    ts.tms_utime-=b.ts.tms_utime;
+    ts.tms_stime-=b.ts.tms_stime;
+    ts.tms_cutime-=b.ts.tms_cutime;
+    ts.tms_cstime-=b.ts.tms_cstime;
+    return *this;
+  }
+  TimeStamp operator-(const TimeStamp &b) const
+  {
+    TimeStamp t(*this);
+    return t-=b;
+  }
+
+  TimeStamp Ellapsed() const
+  {
+    TimeStamp t(NULL);
+    return t-*this;
+  }
+  
+  friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t);
+  
+};
+
+class Timer
+{
+  TimeStamp start_time;
+
+public: 
+  void reset() {start_time.stamp();}
+  Timer() {reset();}
+
+  operator TimeStamp ()
+  {
+    TimeStamp t;
+    t.stamp();
+    return t-start_time;
+  }  
+};
+
+inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t)
+{
+  long cls = sysconf(_SC_CLK_TCK);
+  os << "[ u: " << double(t.getTms().tms_utime)/cls <<
+    "s, s: " << double(t.getTms().tms_stime)/cls <<
+    "s, cu: " << double(t.getTms().tms_cutime)/cls <<
+    "s, cs: " << double(t.getTms().tms_cstime)/cls << "s ]";
+  return os;
+}
+
 #endif //TIME_MEASURE_H