还是纯干货，代码拿来：
#include
#include
#include
#include
#include
#include
#include
void work()
{
FILE *f;
int i;
double x = 4.5;
f = tmpfile();
for(i = 0; i < 10000;i++)
{
fprintf(f,"Do some output\n");
if (ferror(f))
{
fprintf(stderr,"Error writing to temporary file\n");
exit(1);
}
}
for (i =0; i < 1000000; i++)
x = log(x*x + 3.21);
}
int main()
{
struct rusage r_usage;
struct rlimit r_limit;
int priority;
work();
getrusage(RUSAGE_SELF, &r_usage);
printf("CPU usage: User = %ld.%6ld, System = %ld.%06ld\n",r_usage.ru_utime.tv_sec,r_usage.ru_utime.tv_usec,r_usage.ru_stime.tv_sec,r_usage.ru_stime.tv_usec);
priority = getpriority(PRIO_PROCESS, getpid());
printf("Current priority = %d\n", priority);
getrlimit(RLIMIT_FSIZE, &r_limit);
printf("Current FSIZE limit: soft = %ld, hard = %ld\n", r_limit.rlim_cur, r_limit.rlim_max);
r_limit.rlim_cur = 2048;
r_limit.rlim_max = 4096;
printf("Setting a 2K file size limit\n");
setrlimit(RLIMIT_FSIZE, &r_limit);
work();
exit(0);
}效果如图所示：
