Linux多线程编程，替代sleep的几种方式

#include <stdio.h>51Testing软件测试网/b&V.k@;gn'B
#include <stdlib.h>51Testing软件测试网$T[
r4MM t1h-sW?

4cXE.t&tcu$dw0int flag = 1;51Testing软件测试网\3T9zs)w
void * thr_fn(void * arg) {51Testing软件测试网eS~S`Zd pr(m
  while (flag){
P|!Q ~OR8K'L;n0    printf("******\n");51Testing软件测试网/YN ^2k6z T
    sleep(10);51Testing软件测试网uOSd6w'R
  }
1U;c1QY
yU0  printf("sleeptestthread exit\n");51Testing软件测试网V){DPQe$JB
}51Testing软件测试网(W%uw,}}w)~
 
&Jg^Z'B;d Q0int main() {
A L6W"F6U X0  pthread_t thread;
X@f*S}5HwJ?,G0  if (0 != pthread_create(&thread, NULL, thr_fn, NULL)) {
x$t}@/S0    printf("error when create pthread,%d\n", errno);51Testing软件测试网;WQ)c&Y,U_
    return 1;
k/Onb-ne|la0  }
8o CB5a,G:h0 51Testing软件测试网,P)O-D)`.e#K
  char c ;
mkb{n"jyr(u0  while ((c = getchar()) != 'q');51Testing软件测试网$b ^YPs6fT.c4V
 
\&q4v&q!R)j?^H0  printf("Now terminate the thread!\n");51Testing软件测试网J9ZGm,X0h.W4?
  flag = 0;51Testing软件测试网)Y?A,J)i,q
  printf("Wait for thread to exit\n");51Testing软件测试网1O V3A;x5y/r~&[V
  pthread_join(thread, NULL);51Testing软件测试网(?6f5K7qk/] g*BU6AB%^
  printf("Bye\n");51Testing软件测试网Ket%?H9~
  return 0;51Testing软件测试网c0w.H:b }Gf
}

#include <stdio.h>
5UH2M4s6E0#include <sys/time.h>51Testing软件测试网&|(@o&q(Xt4Bn:k
#include <unistd.h>
mc~9K/u6H0#include <pthread.h>
.},E!A
OW}'Z:[^0#include <errno.h>51Testing软件测试网4KIcGm}1~
 51Testing软件测试网l)Xz\)s'{X/I
C
static pthread_t thread;
P3p-],?%O\
o0@DO0static pthread_cond_t cond;

~'v!JL4ByP0static pthread_mutex_t mutex;51Testing软件测试网\+pL.Q2ME
static int flag = 1;51Testing软件测试网r0M+^Qd4HsR|8xB I
 51Testing软件测试网!X-e)N:{"yT
void * thr_fn(void * arg)51Testing软件测试网H;n@0t2ok^
{51Testing软件测试网:H(r#w3u/c
  struct timeval now;51Testing软件测试网I,I*I [},[m u6tS
  struct timespec outtime;51Testing软件测试网y,}` [1I
  pthread_mutex_lock(&mutex);
5B.K0?M2c0  while (flag) {51Testing软件测试网faV3G!Cy!w
    printf("*****\n");51Testing软件测试网slak\;LAG^
    gettimeofday(&now, NULL);51Testing软件测试网"U]b
W^dSb#Y
    outtime.tv_sec = now.tv_sec + 5;51Testing软件测试网9t@"@VeW*vk
    outtime.tv_nsec = now.tv_usec * 1000;
f^"q
M/a0StI0    pthread_cond_timedwait(&cond, &mutex, &outtime);
bu:lb*qg TFc{y0  }
*O/~!KBQ)Sq6ZnZ&I)@0  pthread_mutex_unlock(&mutex);
I3}&W }$xE0  printf("cond thread exit\n");
a,QHS7y-P$q+e0}51Testing软件测试网v1pQN-K b Y
 51Testing软件测试网9Y4y#j P6p(|
int main(void)
hZWG[-z+f5A0{51Testing软件测试网6I&{ \%t,S}dV_
  pthread_mutex_init(&mutex, NULL);51Testing软件测试网D6a
L!W2L
Z
  pthread_cond_init(&cond, NULL);
%ga)v(dGS0  if (0 != pthread_create(&thread, NULL, thr_fn, NULL)) {
I\){7m Xd8V0    printf("error when create pthread,%d\n", errno);51Testing软件测试网-E8r.l1^F2s@,S4k
    return 1;
;Y1o g,x4xH)A7N0  }
],g7X:]t)oe0  char c ;
)j0U;E VP:M6HL|F0  while ((c = getchar()) != 'q');51Testing软件测试网:d5d}6{P^
  printf("Now terminate the thread!\n");51Testing软件测试网d M^7H F\-Y)S

.e!`7Hy]$H
O:@&V b0  pthread_mutex_lock(&mutex);
7WpP5b\a-U0  flag = 0;51Testing软件测试网!K'Lt3I%FM1qh,o!c
  pthread_cond_signal(&cond);51Testing软件测试网ie8C`Ulx
wXWk_ T
  pthread_mutex_unlock(&mutex);51Testing软件测试网)Nt$f,nyhVKT{j
  printf("Wait for thread to exit\n");
m"f)_Apum![0  pthread_join(thread, NULL);51Testing软件测试网0i2kj_6X3C
  printf("Bye\n");51Testing软件测试网%XY4j
n-_[e'[
  return 0;
T7o1j2n3^e&o Xs0}