下面的代码:在Linux(Ubuntu的9.10,与-lrt编译)的aio_read在OS X
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <aio.h>
#include <errno.h>
int main (int argc, char const *argv[])
{
char name[] = "abc";
int fdes;
if ((fdes = open(name, O_RDWR | O_CREAT, 0600)) < 0)
printf("%d, create file", errno);
int buffer[] = {0, 1, 2, 3, 4, 5};
if (write(fdes, &buffer, sizeof(buffer)) == 0){
printf("writerr\n");
}
struct aiocb aio;
int n = 2;
while (n--){
aio.aio_reqprio = 0;
aio.aio_fildes = fdes;
aio.aio_offset = sizeof(int);
aio.aio_sigevent.sigev_notify = SIGEV_NONE;
int buffer2;
aio.aio_buf = &buffer2;
aio.aio_nbytes = sizeof(buffer2);
if (aio_read(&aio) != 0){
printf("%d, readerr\n", errno);
}else{
const struct aiocb *aio_l[] = {&aio};
if (aio_suspend(aio_l, 1, 0) != 0){
printf("%d, suspenderr\n", errno);
}else{
printf("%d\n", *(int *)aio.aio_buf);
}
}
}
return 0;
}
做工精细,印刷
1
1
,但未能在OS X(10.6 0.6和10.6.5,我已经测试了两台机器):
1
35, readerr
这是可能的,这是由于在OS X上的一些库错误,还是我做的索姆错了吗?
仅供参考,35`EAGAIN`,该规范读出 “由于系统资源的限制,该请求未排队..” – 2011-01-12 06:00:18