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Commit | Line | Data |
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02008cb1 AD |
1 | #!/usr/bin/php |
2 | <?php | |
3 | // This is an experimental multiprocess update daemon | |
4 | // It consists of the master server (this file) and | |
5 | // client batch script (update_daemon2_client.php) which | |
6 | // should only be run by the server process | |
7 | ||
8 | declare(ticks = 1); | |
9 | ||
6a69e61f AD |
10 | require_once "config.php"; |
11 | require_once "functions.php"; | |
02008cb1 AD |
12 | |
13 | define('MAX_JOBS', 2); | |
14 | define('CLIENT_PROCESS', './update_daemon2_client.php SRV_RUN_OK'); | |
15 | define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL); | |
16 | ||
17 | $running_jobs = 0; | |
18 | $last_checkpoint = -1; | |
19 | ||
20 | function sigchld_handler($signal) { | |
21 | global $running_jobs; | |
22 | if ($running_jobs > 0) $running_jobs--; | |
23 | print posix_getpid() . ": SIGCHLD received, jobs left: $running_jobs\n"; | |
24 | pcntl_waitpid(-1, $status, WNOHANG); | |
25 | } | |
26 | ||
6a69e61f AD |
27 | function sigint_handler() { |
28 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
29 | die("Received SIGINT. Exiting.\n"); | |
30 | } | |
31 | ||
02008cb1 | 32 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f AD |
33 | pcntl_signal(SIGINT, 'sigint_handler'); |
34 | ||
884c0a36 AD |
35 | if (file_is_locked("update_daemon.lock")) { |
36 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
37 | "Maybe another daemon is already running.\n"); |
38 | } | |
02008cb1 | 39 | |
884c0a36 AD |
40 | if (!pcntl_fork()) { |
41 | $lock_handle = make_lockfile("update_daemon.lock"); | |
42 | ||
43 | if (!$lock_handle) { | |
44 | die("error: Can't create lockfile. ". | |
45 | "Maybe another daemon is already running.\n"); | |
46 | } | |
47 | ||
48 | while (true) { sleep(100); } | |
49 | } | |
50 | ||
02008cb1 AD |
51 | while (true) { |
52 | ||
53 | $next_spawn = $last_checkpoint + SPAWN_INTERVAL - time(); | |
54 | ||
ce1aa9b7 AD |
55 | if ($next_spawn % 10 == 0) { |
56 | print "[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec\n"; | |
57 | } | |
02008cb1 AD |
58 | |
59 | if ($last_checkpoint + SPAWN_INTERVAL < time()) { | |
60 | ||
61 | for ($j = $running_jobs; $j < MAX_JOBS; $j++) { | |
62 | print "[MASTER] spawning client $j..."; | |
63 | $pid = pcntl_fork(); | |
64 | if ($pid == -1) { | |
65 | die("fork failed!\n"); | |
66 | } else if ($pid) { | |
67 | $running_jobs++; | |
68 | print "OK [$running_jobs]\n"; | |
69 | } else { | |
70 | pcntl_signal(SIGCHLD, SIG_IGN); | |
6a69e61f | 71 | pcntl_signal(SIGINT, SIG_DFL); |
02008cb1 AD |
72 | passthru(CLIENT_PROCESS); |
73 | exit(0); | |
74 | } | |
75 | } | |
76 | $last_checkpoint = time(); | |
77 | } | |
78 | sleep(1); | |
79 | } | |
80 | ||
81 | ?> |