100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
#include "mytbf.h"
|
||
#include <errno.h>
|
||
#include <fcntl.h>
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <sys/stat.h>
|
||
#include <sys/types.h>
|
||
#include <time.h>
|
||
#include <unistd.h>
|
||
|
||
#define CPS 10
|
||
#define BUFSIZE 1024
|
||
#define BURST 100 //!! token上限
|
||
|
||
|
||
int main(int argc, char **argv)
|
||
{
|
||
int sfd, dfd = 1;
|
||
char buf[BUFSIZE];
|
||
int len, ret, pos;
|
||
int size;
|
||
mytbf_t *tbf;
|
||
|
||
if (argc < 2)
|
||
{
|
||
fprintf(stderr, "Usage: %s <src>\n", argv[0]);
|
||
exit(1);
|
||
}
|
||
|
||
tbf = mytbf_init(CPS, BURST);
|
||
if (NULL == tbf)
|
||
{
|
||
fprintf(stderr, "mytbf_init failed\n");
|
||
exit(1);
|
||
}
|
||
|
||
do //!!!
|
||
{
|
||
sfd = open(argv[1], O_RDONLY);
|
||
if (sfd < 0)
|
||
{
|
||
//!!!
|
||
if (errno != EINTR)
|
||
{
|
||
perror("open");
|
||
exit(1);
|
||
}
|
||
}
|
||
} while (sfd < 0);
|
||
|
||
while (1)
|
||
{
|
||
size = mytbf_fetchtoken(tbf, BUFSIZE);
|
||
if (size < 0)
|
||
{
|
||
fprintf(stderr, "mytbf_fetchtoken failed: %s\n", strerror(errno));
|
||
}
|
||
|
||
//* 阻塞在这里的时候，token会自增
|
||
while ((len = read(sfd, buf, size)) < 0)
|
||
{
|
||
//!!!
|
||
if (EINTR == errno)
|
||
continue;
|
||
|
||
perror("read");
|
||
break;
|
||
}
|
||
if (len == 0)
|
||
break;
|
||
|
||
if (size - len > 0)
|
||
mytbf_returntoken(tbf, size - len);
|
||
|
||
pos = 0;
|
||
while (len > 0)
|
||
{
|
||
/* 可能没写完被别的中断打断 */
|
||
ret = write(dfd, buf + pos, len);
|
||
if (ret < 0)
|
||
{
|
||
//!!!
|
||
if (EINTR == errno)
|
||
continue;
|
||
perror("write");
|
||
exit(1);
|
||
}
|
||
pos += ret;
|
||
len -= ret;
|
||
}
|
||
|
||
// sleep(1); //! 能实现，但是移植性不好
|
||
}
|
||
|
||
close(sfd);
|
||
mytbf_destroy(tbf);
|
||
exit(0);
|
||
}
|