「Android/排他制御」の版間の差分
提供: 初心者エンジニアの簡易メモ
(→synchronizedメソッド) |
(→synchronizedブロック) |
||
行40: | 行40: | ||
public class HaitaCommand { | public class HaitaCommand { | ||
public void exec() { | public void exec() { | ||
+ | synchronized(this) { | ||
+ | try { | ||
+ | TimeUnit.SECONDS.sleep(3); | ||
+ | Log.i("test", "haitaexec"); | ||
+ | } catch (InterruptedException e) { | ||
+ | e.printStackTrace(); | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | public void exec2() { | ||
synchronized(this) { | synchronized(this) { | ||
try { | try { | ||
行53: | 行63: | ||
12-20 11:02:06.623 2141-2141/com.example.test.myapplication I/test: haitaexec | 12-20 11:02:06.623 2141-2141/com.example.test.myapplication I/test: haitaexec | ||
12-20 11:02:09.633 2141-2141/com.example.test.myapplication I/test: haitaexec | 12-20 11:02:09.633 2141-2141/com.example.test.myapplication I/test: haitaexec | ||
− | 12-20 11:02:12.723 2141-2432/com.example.test.myapplication I/test: | + | 12-20 11:02:12.723 2141-2432/com.example.test.myapplication I/test: haitaexec2 |
2016年12月20日 (火) 11:42時点における版
synchronizedメソッド
-HaitaCommand.java
public class HaitaCommand { public synchronized void exec() { try { TimeUnit.SECONDS.sleep(3); Log.i("test", "haitaexec"); } catch (InterruptedException e) { e.printStackTrace(); } } public synchronized void exec2() { try { TimeUnit.SECONDS.sleep(3); Log.i("test", "haitaexec"); } catch (InterruptedException e) { e.printStackTrace(); } } }
-MainActivity.java
final HaitaCommand command = new HaitaCommand(); new Thread(new Runnable() { @Override public void run() { command.exec2(); } }).start(); command.exec(); command.exec();
3秒ごとに処理された
12-20 11:00:23.143 32076-32076/com.example.test.myapplication I/test: haitaexec 12-20 11:00:26.143 32076-32076/com.example.test.myapplication I/test: haitaexec 12-20 11:00:29.183 32076-32424/com.example.test.myapplication I/test: haitaexec2
synchronizedブロック
-HaitaCommand.java
public class HaitaCommand { public void exec() { synchronized(this) { try { TimeUnit.SECONDS.sleep(3); Log.i("test", "haitaexec"); } catch (InterruptedException e) { e.printStackTrace(); } } } public void exec2() { synchronized(this) { try { TimeUnit.SECONDS.sleep(3); Log.i("test", "haitaexec"); } catch (InterruptedException e) { e.printStackTrace(); } } } }
3秒ごとに処理された
12-20 11:02:06.623 2141-2141/com.example.test.myapplication I/test: haitaexec 12-20 11:02:09.633 2141-2141/com.example.test.myapplication I/test: haitaexec 12-20 11:02:12.723 2141-2432/com.example.test.myapplication I/test: haitaexec2