src/Sockets/tests/semtest.cpp

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #ifndef _WIN32
   4 #include <unistd.h>
   5 #include <Semaphore.h>
   6 #include <Mutex.h>
   7 #include <Thread.h>
   8 #include <Utility.h>
   9 #include <Lock.h>
  10
  11
  12 class MyThread : public Thread
  13 {
  14 public:
  15         void Run() {
  16                 printf("Thread\n");
  17         }
  18 };
  19
  20
  21 class SemLock
  22 {
  23 public:
  24         SemLock(Semaphore& sem) : m_sem(sem) {
  25                 m_sem.Wait();
  26         }
  27         ~SemLock() {
  28                 m_sem.Post();
  29         }
  30
  31 private:
  32         Semaphore& m_sem;
  33 };
  34
  35
  36 /**
  37  * Return time difference between two struct timeval's, in seconds
  38  * \param t0 start time
  39  * \param t     end time
  40  */
  41 double Diff(struct timeval t0,struct timeval t)
  42 {
  43         t.tv_sec -= t0.tv_sec;
  44         t.tv_usec -= t0.tv_usec;
  45         if (t.tv_usec < 0)
  46         {
  47                 t.tv_usec += 1000000;
  48                 t.tv_sec -= 1;
  49         }
  50         return t.tv_sec + (double)t.tv_usec / 1000000;
  51 }
  52
  53
  54 static  int val = 0;
  55
  56 void lock(Mutex& m, int i)
  57 {
  58         Lock l(m);
  59         val += i;
  60 }
  61
  62
  63 void lock(Semaphore& s, int i)
  64 {
  65         SemLock l(s);
  66         val += i;
  67 }
  68 #endif // WIN32
  69
  70
  71 int main()
  72 {
  73 #ifndef _WIN32
  74         Mutex mutex;
  75         Semaphore sema(1);
  76         struct timeval start;
  77         struct timeval tt;
  78         double d;
  79
  80         Utility::GetTime(&start);
  81         for (int i = 0; i < 100000; i++)
  82                 lock(mutex, i);
  83         Utility::GetTime(&tt);
  84         d = Diff(start, tt);
  85         printf("%.4f sec\n", d);
  86
  87         Utility::GetTime(&start);
  88         for (int i = 0; i < 100000; i++)
  89                 lock(sema, i);
  90         Utility::GetTime(&tt);
  91         d = Diff(start, tt);
  92         printf("%.4f sec\n", d);
  93 #endif
  94 }
  95
  96