48 lines
1016 B
C++
48 lines
1016 B
C++
#include <iostream>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <string.h>
|
|
|
|
#include "thread.h"
|
|
|
|
static int g_tid = 0;
|
|
|
|
static int fib(int n){
|
|
switch (n) {
|
|
case 0: return 1;
|
|
case 1: return 1;
|
|
default: return (fib(n-2) + fib(n-1));
|
|
}
|
|
}
|
|
|
|
void * thread_proc(void* ctx)
|
|
{
|
|
int tid = g_tid++;
|
|
|
|
char thread_name[16];
|
|
sprintf(thread_name, "Thread %d", tid);
|
|
#ifdef __APPLE__
|
|
pthread_setname_np(thread_name);
|
|
#else
|
|
pthread_setname_np(pthread_self(), thread_name);
|
|
#endif
|
|
|
|
// Random delay, 0 - 0.5 sec
|
|
timespec ts;
|
|
ts.tv_sec = 0;
|
|
ts.tv_nsec = 500000000 + ((float)rand() / (float)RAND_MAX) * 500000000;
|
|
nanosleep(&ts, NULL);
|
|
|
|
volatile int i = 0;
|
|
while (i <= 30) {
|
|
std::cout << "Thread " << tid << ": fib(" << i << ") = " << fib(i) << std::endl;
|
|
i++;
|
|
nanosleep(&ts, NULL);
|
|
}
|
|
|
|
std::cout << thread_name << " exited!" << std::endl;
|
|
} |