… | |
… | |
287 | # endif |
287 | # endif |
288 | #endif |
288 | #endif |
289 | |
289 | |
290 | #if EV_USE_INOTIFY |
290 | #if EV_USE_INOTIFY |
291 | # include <sys/utsname.h> |
291 | # include <sys/utsname.h> |
|
|
292 | # include <sys/statfs.h> |
292 | # include <sys/inotify.h> |
293 | # include <sys/inotify.h> |
293 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
294 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
294 | # ifndef IN_DONT_FOLLOW |
295 | # ifndef IN_DONT_FOLLOW |
295 | # undef EV_USE_INOTIFY |
296 | # undef EV_USE_INOTIFY |
296 | # define EV_USE_INOTIFY 0 |
297 | # define EV_USE_INOTIFY 0 |
… | |
… | |
2414 | # ifdef _WIN32 |
2415 | # ifdef _WIN32 |
2415 | # undef lstat |
2416 | # undef lstat |
2416 | # define lstat(a,b) _stati64 (a,b) |
2417 | # define lstat(a,b) _stati64 (a,b) |
2417 | # endif |
2418 | # endif |
2418 | |
2419 | |
2419 | #define DEF_STAT_INTERVAL 5.0074891 |
2420 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2421 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
2420 | #define MIN_STAT_INTERVAL 0.1074891 |
2422 | #define MIN_STAT_INTERVAL 0.1074891 |
2421 | |
2423 | |
2422 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2424 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2423 | |
2425 | |
2424 | #if EV_USE_INOTIFY |
2426 | #if EV_USE_INOTIFY |
2425 | # define EV_INOTIFY_BUFSIZE 8192 |
2427 | # define EV_INOTIFY_BUFSIZE 8192 |
… | |
… | |
2429 | { |
2431 | { |
2430 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
2432 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
2431 | |
2433 | |
2432 | if (w->wd < 0) |
2434 | if (w->wd < 0) |
2433 | { |
2435 | { |
|
|
2436 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2434 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2437 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2435 | |
2438 | |
2436 | /* monitor some parent directory for speedup hints */ |
2439 | /* monitor some parent directory for speedup hints */ |
2437 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2440 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2438 | /* but an efficiency issue only */ |
2441 | /* but an efficiency issue only */ |
2439 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2442 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
… | |
… | |
2456 | } |
2459 | } |
2457 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2460 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2458 | } |
2461 | } |
2459 | } |
2462 | } |
2460 | else |
2463 | else |
2461 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
2464 | { |
2462 | |
|
|
2463 | if (w->wd >= 0) |
|
|
2464 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2465 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2466 | |
|
|
2467 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2468 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2469 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2470 | struct statfs sfs; |
|
|
2471 | |
|
|
2472 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2473 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2474 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2475 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2476 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2477 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2478 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2479 | return; |
|
|
2480 | |
|
|
2481 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2482 | ev_timer_again (EV_A_ &w->timer); |
|
|
2483 | } |
2465 | } |
2484 | } |
2466 | |
2485 | |
2467 | static void noinline |
2486 | static void noinline |
2468 | infy_del (EV_P_ ev_stat *w) |
2487 | infy_del (EV_P_ ev_stat *w) |
2469 | { |
2488 | { |
… | |
… | |
2522 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2541 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2523 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2542 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2524 | } |
2543 | } |
2525 | |
2544 | |
2526 | void inline_size |
2545 | void inline_size |
2527 | infy_init (EV_P) |
2546 | check_2625 (EV_P) |
2528 | { |
2547 | { |
2529 | if (fs_fd != -2) |
|
|
2530 | return; |
|
|
2531 | |
|
|
2532 | /* kernels < 2.6.25 are borked |
2548 | /* kernels < 2.6.25 are borked |
2533 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2549 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2534 | */ |
2550 | */ |
2535 | { |
|
|
2536 | struct utsname buf; |
2551 | struct utsname buf; |
2537 | int major, minor, micro; |
2552 | int major, minor, micro; |
2538 | |
2553 | |
2539 | fs_fd = -1; |
|
|
2540 | |
|
|
2541 | if (uname (&buf)) |
2554 | if (uname (&buf)) |
2542 | return; |
2555 | return; |
2543 | |
2556 | |
2544 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
2557 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
2545 | return; |
2558 | return; |
2546 | |
2559 | |
2547 | if (major < 2 |
2560 | if (major < 2 |
2548 | || (major == 2 && minor < 6) |
2561 | || (major == 2 && minor < 6) |
2549 | || (major == 2 && minor == 6 && micro < 25)) |
2562 | || (major == 2 && minor == 6 && micro < 25)) |
2550 | return; |
2563 | return; |
2551 | } |
2564 | |
|
|
2565 | fs_2625 = 1; |
|
|
2566 | } |
|
|
2567 | |
|
|
2568 | void inline_size |
|
|
2569 | infy_init (EV_P) |
|
|
2570 | { |
|
|
2571 | if (fs_fd != -2) |
|
|
2572 | return; |
|
|
2573 | |
|
|
2574 | fs_fd = -1; |
|
|
2575 | |
|
|
2576 | check_2625 (EV_A); |
2552 | |
2577 | |
2553 | fs_fd = inotify_init (); |
2578 | fs_fd = inotify_init (); |
2554 | |
2579 | |
2555 | if (fs_fd >= 0) |
2580 | if (fs_fd >= 0) |
2556 | { |
2581 | { |
… | |
… | |
2584 | w->wd = -1; |
2609 | w->wd = -1; |
2585 | |
2610 | |
2586 | if (fs_fd >= 0) |
2611 | if (fs_fd >= 0) |
2587 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2612 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2588 | else |
2613 | else |
2589 | ev_timer_start (EV_A_ &w->timer); |
2614 | ev_timer_again (EV_A_ &w->timer); |
2590 | } |
2615 | } |
2591 | } |
2616 | } |
2592 | } |
2617 | } |
2593 | |
2618 | |
2594 | #endif |
2619 | #endif |
… | |
… | |
2649 | ev_stat_start (EV_P_ ev_stat *w) |
2674 | ev_stat_start (EV_P_ ev_stat *w) |
2650 | { |
2675 | { |
2651 | if (expect_false (ev_is_active (w))) |
2676 | if (expect_false (ev_is_active (w))) |
2652 | return; |
2677 | return; |
2653 | |
2678 | |
2654 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2655 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2656 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2657 | |
|
|
2658 | ev_stat_stat (EV_A_ w); |
2679 | ev_stat_stat (EV_A_ w); |
2659 | |
2680 | |
|
|
2681 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
2660 | if (w->interval < MIN_STAT_INTERVAL) |
2682 | w->interval = MIN_STAT_INTERVAL; |
2661 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2662 | |
2683 | |
2663 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
2684 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
2664 | ev_set_priority (&w->timer, ev_priority (w)); |
2685 | ev_set_priority (&w->timer, ev_priority (w)); |
2665 | |
2686 | |
2666 | #if EV_USE_INOTIFY |
2687 | #if EV_USE_INOTIFY |
2667 | infy_init (EV_A); |
2688 | infy_init (EV_A); |
2668 | |
2689 | |
2669 | if (fs_fd >= 0) |
2690 | if (fs_fd >= 0) |
2670 | infy_add (EV_A_ w); |
2691 | infy_add (EV_A_ w); |
2671 | else |
2692 | else |
2672 | #endif |
2693 | #endif |
2673 | ev_timer_start (EV_A_ &w->timer); |
2694 | ev_timer_again (EV_A_ &w->timer); |
2674 | |
2695 | |
2675 | ev_start (EV_A_ (W)w, 1); |
2696 | ev_start (EV_A_ (W)w, 1); |
2676 | |
2697 | |
2677 | EV_FREQUENT_CHECK; |
2698 | EV_FREQUENT_CHECK; |
2678 | } |
2699 | } |