| // Copyright 2018 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <unistd.h> |
| |
| int main(int argc, char** argv) { |
| char* buf; |
| size_t i, size; |
| if (argc < 2) { |
| fprintf(stderr, "Usage: ./memory-eater-locked <size in MB>\n"); |
| return 1; |
| } |
| if (mlockall(MCL_FUTURE)) { |
| fprintf(stderr, "Failed to lock pages: %d\n", errno); |
| return 1; |
| } |
| size = strtol(argv[1], NULL, 10); |
| size *= 1024 * 1024; |
| printf("Allocating %zd bytes\n", size); |
| buf = (char*) malloc(size); |
| memset(buf, 'x', size); |
| printf("Done\n"); |
| fflush(stdout); |
| pause(); |
| return 0; |
| } |