duanhong169

#===============================================================================
# Filename:  boost.sh
# Author:    Pete Goodliffe
# Copyright: (c) Copyright 2009 Pete Goodliffe
# Licence:   Please feel free to use this, with attribution
# Modified version
#===============================================================================
#
# Builds a Boost framework for the iPhone.
# Creates a set of universal libraries that can be used on an iPhone and in the

duanhong169

#include <stdlib.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <linux/netdevice.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/system_properties.h>
#include <stdio.h>

char cmd_res_line[256];

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#import <Foundation/Foundation.h>

@interface BDSBlockingQueue : NSObject

- (void)enqueue:(id)item;
- (id)dequeue;

@end

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public static VersionedOperation () {
    final int sdkVersion = Integer.parseInt(Build.VERSION.SDK);
    
    if (sdkVersion > Build.VERSION_CODES.ECLAIR) {
        // do something with new API features
    } else {
        // do normal
    }
}

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private DiskLruCache mDiskLruCache;
private final Object mDiskCacheLock = new Object();
private boolean mDiskCacheStarting = true;
private static final int DISK_CACHE_SIZE = 1024 * 1024 * 10; // 10MB
private static final String DISK_CACHE_SUBDIR = "disk_cache";

File cacheDir = getDiskCacheDir(this, DISK_CACHE_SUBDIR);
new InitDiskCacheTask().execute(cacheDir);

class InitDiskCacheTask extends AsyncTask<File, Void, Void> {

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public void addBitmapToMemoryCache(String key, Bitmap bitmap) {
    if (getBitmapFromMemCache(key) == null) {
        mMemoryCache.put(key, bitmap);
    }
}

public Bitmap getBitmapFromMemCache(String key) {
    return mMemoryCache.get(key);
}

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private LruCache<String, BitmapDrawable> mMemoryCache;

final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);

// 使用最大可使用内存的1/8作为缓存
final int cacheSize = maxMemory / 8;

mMemoryCache = new LruCache<String, BitmapDrawable>(cacheSize) {

    /**

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/**
 * 如果当前存在一致的任务，返回false，代表不需要新建任务，否则返回true
 */
public static boolean cancelPotentialWork(Object data, ImageView imageView) {
    final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);

    if (bitmapWorkerTask != null) {
        final Object bitmapData = bitmapWorkerTask.data;
        if (bitmapData == null || !bitmapData.equals(data)) {
            bitmapWorkerTask.cancel(true);

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/**
 * 比较之前传入的ImageView在当前时刻关联的`AsyncTask`是否等于自身
 * 来确定是否需要将结果返回给ImageView
 */
private ImageView getAttachedImageView() {
    final ImageView imageView = imageViewReference.get();
    final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);

    if (this == bitmapWorkerTask) {
        return imageView;

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private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
    if (imageView != null) {
        final Drawable drawable = imageView.getDrawable();
        if (drawable instanceof AsyncDrawable) {
            final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
            return asyncDrawable.getBitmapWorkerTask();
        }
    }
    return null;
}