| Цитата(boostcoder @ 26.8.2010, 12:00) | REZiaMIX, ты бы еще код показал, и тебе бы цены небыло  |
| Код |
timers::msTimer timer;
unsigned long mcount = 2000000;
std::vector <criticalSection *> sections;
printf("Count: %i\n",mcount);
timer.timer();
for(size_t i=0;i!= mcount;++i)
sections.push_back(new criticalSection);
unsigned long time_create = timer.getValue();
float permutex = float(time_create) / float(mcount);
printf("All mutexes created in %d ms; %f ms per mutex\n",time_create,permutex);
timer.timer();
for(size_t i=0;i!= mcount;++i)
sections[i]->enter();
unsigned long time_lock = timer.getValue();
permutex = float(time_lock) / float(mcount);
printf("All mutexes locked in %d ms; %f ms per mutex\n",time_lock,permutex);
timer.timer();
for(size_t i=0;i!= mcount;++i)
sections[i]->leave();
unsigned long time_unlock = timer.getValue();
permutex = float(time_unlock) / (mcount);
printf("All mutexes unlocked in %d ms; %f ms per mutex\n",time_unlock,permutex);
|
Где criticalSection:
| Код |
criticalSection::criticalSection()
{
if(pthread_mutex_init(&myMutex, NULL) != 0)
printf("Mutex creating error!\n");
}
criticalSection::~criticalSection()
{
pthread_mutex_destroy(&myMutex);
}
void criticalSection::enter()
{
pthread_mutex_lock(&myMutex);
}
void criticalSection::leave()
{
pthread_mutex_unlock(&myMutex);
}
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