| /* |
| * Create a squashfs filesystem. This is a highly compressed read only |
| * filesystem. |
| * |
| * Copyright (c) 2013 |
| * Phillip Lougher <phillip@squashfs.org.uk> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2, |
| * or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| * |
| * unsquashfs_info.c |
| */ |
| |
| #include <pthread.h> |
| #include <sys/ioctl.h> |
| #include <unistd.h> |
| #include <signal.h> |
| #include <sys/time.h> |
| #include <stdio.h> |
| #include <math.h> |
| #include <stdarg.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <dirent.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <string.h> |
| |
| #include "squashfs_fs.h" |
| #include "unsquashfs.h" |
| #include "error.h" |
| |
| static int silent = 0; |
| char *pathname = NULL; |
| |
| pthread_t info_thread; |
| |
| |
| void disable_info() |
| { |
| if(pathname) |
| free(pathname); |
| |
| pathname = NULL; |
| } |
| |
| |
| void update_info(char *name) |
| { |
| if(pathname) |
| free(pathname); |
| |
| pathname = name; |
| } |
| |
| |
| void dump_state() |
| { |
| disable_progress_bar(); |
| |
| printf("Queue and cache status dump\n"); |
| printf("===========================\n"); |
| |
| printf("file buffer read queue (main thread -> reader thread)\n"); |
| dump_queue(to_reader); |
| |
| printf("file buffer decompress queue (reader thread -> inflate" |
| " thread(s))\n"); |
| dump_queue(to_inflate); |
| |
| printf("file buffer write queue (main thread -> writer thread)\n"); |
| dump_queue(to_writer); |
| |
| printf("\nbuffer cache (uncompressed blocks and compressed blocks " |
| "'in flight')\n"); |
| dump_cache(data_cache); |
| |
| printf("fragment buffer cache (uncompressed frags and compressed" |
| " frags 'in flight')\n"); |
| dump_cache(fragment_cache); |
| |
| enable_progress_bar(); |
| } |
| |
| |
| void *info_thrd(void *arg) |
| { |
| sigset_t sigmask; |
| struct timespec timespec = { .tv_sec = 1, .tv_nsec = 0 }; |
| int sig, waiting = 0; |
| |
| sigemptyset(&sigmask); |
| sigaddset(&sigmask, SIGQUIT); |
| sigaddset(&sigmask, SIGHUP); |
| |
| while(1) { |
| if(waiting) |
| sig = sigtimedwait(&sigmask, NULL, ×pec); |
| else |
| sig = sigwaitinfo(&sigmask, NULL); |
| |
| if(sig == -1) { |
| switch(errno) { |
| case EAGAIN: |
| /* interval timed out */ |
| waiting = 0; |
| /* FALLTHROUGH */ |
| case EINTR: |
| /* if waiting, the wait will be longer, but |
| that's OK */ |
| continue; |
| default: |
| BAD_ERROR("sigtimedwait/sigwaitinfo failed " |
| "because %s\n", strerror(errno)); |
| } |
| } |
| |
| if(sig == SIGQUIT && !waiting) { |
| if(pathname) |
| INFO("%s\n", pathname); |
| |
| /* set one second interval period, if ^\ received |
| within then, dump queue and cache status */ |
| waiting = 1; |
| } else |
| dump_state(); |
| } |
| } |
| |
| |
| void init_info() |
| { |
| pthread_create(&info_thread, NULL, info_thrd, NULL); |
| } |