小编Mid*_*mal的帖子

考虑多个线程正在尝试访问关键部分,在一个同步块内发生异常的一个线程会发生什么,它有wait()和notify()来累积和释放锁定.

我试图添加PHP pthreads,完成以下步骤

提取拉链 -

• 移动php_pthreads.dll到bin\php\ext\目录.
• 移动pthreadVC2.dll到bin\php\目录.
• 移动pthreadVC2.dll到bin\apache\bin目录.
• 移动pthreadVC2.dll到C:\windows\system32目录.
• 打开php\php.ini并添加extension=php_pthreads.dll

执行这些步骤后,重新生成会导致错误

PHP启动:无法加载动态库'c:\ xamp\php\ext\php_pthreads.dll' - %1不是有效的Win32应用程序

我正在尝试使用Android中的异步任务下载和存储图像,当单击下载按钮获取以下错误.

    W/System.err: java.io.FileNotFoundException: /storage/emulated/0/downloadedfilem.jpg (Permission denied)
12-07 11:01:00.120 28478-28540/myoracle.com.quotes W/System.err:     at java.io.FileOutputStream.open(Native Method)
12-07 11:01:00.120 28478-28540/myoracle.com.quotes W/System.err:     at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
12-07 11:01:00.120 28478-28540/myoracle.com.quotes W/System.err:     at java.io.FileOutputStream.<init>(FileOutputStream.java:108)
12-07 11:01:00.120 28478-28540/myoracle.com.quotes W/System.err:     at myoracle.com.quotes.WallpaperDeatilsActivity$ImageDownload.doInBackground(WallpaperDeatilsActivity.java:113)
12-07 11:01:00.120 28478-28540/myoracle.com.quotes W/System.err:     at myoracle.com.quotes.WallpaperDeatilsActivity$ImageDownload.doInBackground(WallpaperDeatilsActivity.java:91)

WallpaperActivity.java

class ImageDownload extends AsyncTask<String, String, String> {

    @Override
    protected String doInBackground(String... params) {
        int count;
        try {

            String root = Environment.getExternalStorageDirectory().toString();

            System.out.println("Downloading");
            URL url = new URL(params[0]);

            URLConnection conection = url.openConnection();
            conection.connect();
            // getting file length
            int lenghtOfFile = conection.getContentLength();

            // input …