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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); | |
73d3b9b1 | 16 | define('PHP_EXECUTABLE', '/usr/bin/php'); |
02008cb1 AD |
17 | |
18 | $running_jobs = 0; | |
19 | $last_checkpoint = -1; | |
20 | ||
21 | function sigchld_handler($signal) { | |
22 | global $running_jobs; | |
23 | if ($running_jobs > 0) $running_jobs--; | |
24 | print posix_getpid() . ": SIGCHLD received, jobs left: $running_jobs\n"; | |
25 | pcntl_waitpid(-1, $status, WNOHANG); | |
26 | } | |
27 | ||
6a69e61f AD |
28 | function sigint_handler() { |
29 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
30 | die("Received SIGINT. Exiting.\n"); | |
31 | } | |
32 | ||
02008cb1 | 33 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f AD |
34 | pcntl_signal(SIGINT, 'sigint_handler'); |
35 | ||
884c0a36 AD |
36 | if (file_is_locked("update_daemon.lock")) { |
37 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
38 | "Maybe another daemon is already running.\n"); |
39 | } | |
02008cb1 | 40 | |
884c0a36 AD |
41 | if (!pcntl_fork()) { |
42 | $lock_handle = make_lockfile("update_daemon.lock"); | |
43 | ||
44 | if (!$lock_handle) { | |
45 | die("error: Can't create lockfile. ". | |
46 | "Maybe another daemon is already running.\n"); | |
47 | } | |
48 | ||
49 | while (true) { sleep(100); } | |
50 | } | |
51 | ||
02008cb1 AD |
52 | while (true) { |
53 | ||
54 | $next_spawn = $last_checkpoint + SPAWN_INTERVAL - time(); | |
55 | ||
ce1aa9b7 AD |
56 | if ($next_spawn % 10 == 0) { |
57 | print "[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec\n"; | |
58 | } | |
02008cb1 AD |
59 | |
60 | if ($last_checkpoint + SPAWN_INTERVAL < time()) { | |
61 | ||
62 | for ($j = $running_jobs; $j < MAX_JOBS; $j++) { | |
63 | print "[MASTER] spawning client $j..."; | |
64 | $pid = pcntl_fork(); | |
65 | if ($pid == -1) { | |
66 | die("fork failed!\n"); | |
67 | } else if ($pid) { | |
68 | $running_jobs++; | |
69 | print "OK [$running_jobs]\n"; | |
70 | } else { | |
71 | pcntl_signal(SIGCHLD, SIG_IGN); | |
6a69e61f | 72 | pcntl_signal(SIGINT, SIG_DFL); |
73d3b9b1 | 73 | passthru(PHP_EXECUTABLE . ' ' . CLIENT_PROCESS); |
02008cb1 AD |
74 | exit(0); |
75 | } | |
76 | } | |
77 | $last_checkpoint = time(); | |
78 | } | |
79 | sleep(1); | |
80 | } | |
81 | ||
82 | ?> |