File: MultiProcessor.php Lines 2 to 21
2
3/**
4 * 並列実行ドライバ
5 *
6 * Linuxの fork&exec を利用したものなのでWindowsでは動作しない。
7 * pcntl拡張が必要。
8 *
9 * @uses pcntl
10 */
Type Class Description
checkstyle MissingNamespace Each class must be in a namespace of at least one level (a top-level vendor name)
11
Type Class Description
checkstyle MissingNamespace Each class must be in a namespace of at least one level (a top-level vendor name)
class MultiProcessor {
12
13    /**
14     * 登録された子プロセスのリスト
15     *
16     * <pre>
17     * executable => PATH/TO/EXECUTABLE
18     * args => array(arg1, arg2...)
19     * </pre>
20     * @var array
21     */
 
File: MultiProcessor.php Lines 56 to 75
56        if(count($this->childProcesses) === 0) {
57            return false;
58        }
59
60        // fork & exec
61        $this->startChildren();
62
63        // wait
64        $arrExited = array();
Type Class Description
pmd UnusedLocalVariable Avoid unused local variables such as '$dummy'.
65
Type Class Description
pmd UnusedLocalVariable Avoid unused local variables such as '$dummy'.
        foreach($this->pids as $pid=>$dummy) {
66            pcntl_waitpid($pid, $status, WUNTRACED);
67            //echo $pid, ":", pcntl_wexitstatus($status), "\n";
68            $arrExited[$pid] = pcntl_wexitstatus($status);
69        }
70
71        foreach($arrExited as $pid=>$status) {
72            if($status !== 0) {
73                return false;
74                break;
75            }
 
File: MultiProcessor.php Lines 85 to 104
85     *
86     * @param string $executableFullpath 実行可能ファイルのfullpath
87     * @param string[] $args (optional) 引数
88     */
89    public function addChild($executableFullpath, array $args=array()) {
90        $this->childProcesses[] = array('executable'=>$executableFullpath, 'args'=>$args);
91    }
92
93    protected function startChildren() {
Type Class Description
pmd UnusedLocalVariable Avoid unused local variables such as '$numOfChildren'.
94
Type Class Description
pmd UnusedLocalVariable Avoid unused local variables such as '$numOfChildren'.
        $numOfChildren = count($this->childProcesses);
95
96        foreach($this->childProcesses as $child) {
97            $childPid = $this->forkChild($child['executable'], $child['args']);
98            $this->pids[$childPid]['forked'] = true;
99            $this->pids[$childPid]['args'] = $child['args'];
100        }
101    }
102
103    /**
104     * fork & exec
 
File: MultiProcessor.php Lines 114 to 127
114            throw new Exception('Fork failed.');
115        } else if ($pid > 0) {
116            // Parent
117            //echo "Forking child...\n";
118        } else {
119            // Child
120            pcntl_exec($executable, $args);
121
122            // ここに来たということは pcntl_exec 失敗
Type Class Description
pmd ExitExpression The method forkChild() contains an exit expression.
123
Type Class Description
pmd ExitExpression The method forkChild() contains an exit expression.
            exit(255);
124        }
125        return $pid;
126    }
127}