Путеводитель по Руководству Linux

  User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |



   vlimit    ( 3 )

получить / установить ограничения ресурсов (get/set resource limits)

  Name  |  Synopsis  |  Description  |  Return value  |  Error  |  Versions  |  Attributes  |  Conforming to  |  Note  |  Bugs  |    Examples    |  See also  |

Примеры (Examples)

The program below demonstrates the use of prlimit().

#define _GNU_SOURCE #define _FILE_OFFSET_BITS 64 #include <stdint.h> #include <stdio.h> #include <time.h> #include <stdlib.h> #include <unistd.h> #include <sys/resource.h>

#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \ } while (0)

int main(int argc, char *argv[]) { struct rlimit old, new; struct rlimit *newp; pid_t pid;

if (!(argc == 2 || argc == 4)) { fprintf(stderr, "Usage: %s <pid> [<new-soft-limit> " "<new-hard-limit>]\n", argv[0]); exit(EXIT_FAILURE); }

pid = atoi(argv[1]); /* PID of target process */

newp = NULL; if (argc == 4) { new.rlim_cur = atoi(argv[2]); new.rlim_max = atoi(argv[3]); newp = &new; }

/* Set CPU time limit of target process; retrieve and display previous limit */

if (prlimit(pid, RLIMIT_CPU, newp, &old) == -1) errExit("prlimit-1"); printf("Previous limits: soft=%jd; hard=%jd\n", (intmax_t) old.rlim_cur, (intmax_t) old.rlim_max);

/* Retrieve and display new CPU time limit */

if (prlimit(pid, RLIMIT_CPU, NULL, &old) == -1) errExit("prlimit-2"); printf("New limits: soft=%jd; hard=%jd\n", (intmax_t) old.rlim_cur, (intmax_t) old.rlim_max);

exit(EXIT_SUCCESS); }