Move process functions to Model\Process

- Add start|endProcess functions to Core\Worker

src/Model/Process.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * @file src/Model/Process.php
+ */
+namespace Friendica\Model;
+
+use Friendica\BaseObject;
+use dba;
+
+require_once 'include/dba.php';
+
+/**
+ * @brief functions for interacting with a process
+ */
+class Process extends BaseObject
+{
+	/**
+	 * Insert a new process row. If the pid parameter is omitted, we use the current pid
+	 *
+	 * @param string $command
+	 * @param string $pid
+	 * @return bool
+	 */
+	public static function insert($command, $pid = null)
+	{
+		dba::transaction();
+
+		if (!dba::exists('process', ['pid' => getmypid()])) {
+			$return = dba::insert('process', ['pid' => $pid, 'command' => $command, 'created' => datetime_convert()]);
+		}
+
+		dba::commit();
+
+		return $return;
+	}
+
+	/**
+	 * Remove a process row by pid. If the pid parameter is omitted, we use the current pid
+	 *
+	 * @param string $pid
+	 * @return bool
+	 */
+	public static function deleteByPid($pid = null)
+	{
+		if ($pid === null) {
+			$pid = getmypid();
+		}
+
+		return dba::delete('process', ['pid' => $pid]);
+	}
+
+	/**
+	 * Clean the process table of inactive physical processes
+	 */
+	public static function deleteInactive()
+	{
+		dba::transaction();
+
+		$processes = dba::select('process', ['pid']);
+		while($process = dba::fetch($processes)) {
+			if (!posix_kill($process['pid'], 0)) {
+				self::deleteByPid($process['pid']);
+			}
+		}
+
+		dba::commit();
+	}
+}