* The runner requires Linux kernel version 3.10 or later.
* To measure memory and CPU time usage.
* To set limits and use other security measurement.
Code is hosted on Github
https://github.com/IndeedPlusPlus/docker-judge-runner
Preview (old)
#include <unistd.h> #include <sys/types.h> #include <sys/resource.h> #include <sys/wait.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #define RUNNER_UID 1000 #define RUNNER_GID 1000 void print_preformance(const struct rusage * ruse) { unsigned time = ruse->ru_utime.tv_sec * 1000 + ruse->ru_utime.tv_usec / 1000; time += ruse->ru_stime.tv_sec * 1000 + ruse->ru_stime.tv_usec / 1000; fprintf(stderr, "Total time: %u seconds and %u milliseconds. Memory: %ld\n", time / 1000 , time % 1000, ruse->ru_maxrss); } int main(int argc, char ** argv) { pid_t pid = fork(); if (pid) { // monitor int status; struct rusage ruse; wait4(pid, &status, 0, &ruse); if (WIFEXITED(status)) { // exited normally int exit_code = WEXITSTATUS(status); fprintf(stderr, "Exit code: %d\n", exit_code); } else if (WIFSIGNALED(status)) { // killed by signal int signal = WTERMSIG(status); fprintf(stderr, "Signal: %s\n", strsignal(signal)); } else { // should never get there } print_preformance(&ruse); } else { // runner if (argc <= 1) return 1; char ** args = malloc(argc * sizeof(char *)); int i = 0; for (i = 1 ; i < argc ; ++i) args[i - 1] = argv[i]; args[i - 1] = NULL; // optionally set uid & gid if (setgid(RUNNER_GID)) perror("setgid"); if (setuid(RUNNER_UID)) perror("setuid"); if (execvp(argv[1] , args)) { perror("exec"); return 2; } } return 0; }
转载于:https://www.cnblogs.com/judgment/p/5329276.html
