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Sending files using POST with HttpURLConnection

...ith bitmap data: Bitmap bitmap = ...; String filename = "filename.png"; ByteArrayOutputStream bos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, bos); ContentBody contentPart = new ByteArrayBody(bos.toByteArray(), filename); MultipartEntity r...
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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...,对那些超过一秒总延时的请求进行分析。该工具会直接测试这些问题请求内部的时间分布,包括请求处理过程中各个典型 I/O 操作的延时以及纯 CPU 计算延时。结果很快定位到是 OpenResty 在访问 Go 编写的 DNS 服务器时,出现延时...
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原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术

...原子交换,扩容采用链表的形式,代码可直接运行。 测试代码: HPHP::AtomicVector<float> v_atom(2, 0.f); void atom_vector_hphp() { v_atom.exchange(0, 1); v_atom.exchange(1, 2); } atomic vector folly
https://www.tsingfun.com/it/tech/1058.html 

通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...缓存被激活,运行于静态模式,数据通过缓存渲染。通过测试发现,系统在从正常切换到异常时,因为舍弃了PHP-FPM,所以RPS从一千跃升到一万。这让我想起儿时看圣斗士的情景:每当不死鸟一辉被敌人击倒后,他总能重新站起...
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adito-gateway -华为云免费SSL VPN解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...解决方法: yum install glibc.i686 再次运行 ant start 在测试时已经能进入网页https://服务器IP地址,但是用超级用户不能登录,重启下服务器即可 #reboot 登录http://ip 上传插件 点击Extension Manager 右上角的Upload Exension ...
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How to add a custom right-click menu to a webpage?

...gt; &lt;a href="#"&gt; &lt;img src="http://puu.sh/nr60s/42df867bf3.png" /&gt; AdBlock Plus &lt;span&gt;Ctrl + ?!&lt;/span&gt; &lt;/a&gt; &lt;a href="#"&gt; &lt;img src="http://puu.sh/nr5Z6/4360098fc1.png" /&gt; SNTX &lt;span&gt;Ctrl + ?!&lt;/span&gt; &lt;/a&gt; &lt;hr /&gt; ...
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Generate a heatmap in MatPlotLib using a scatter data set

...I don't mean to be an idiot, but how do you actually have this output to a PNG/PDF file instead of only displaying in an interactive IPython session? I'm trying to get this as some sort of normal axes instance, where I can add a title, axis labels, etc. and then do the normal savefig() like I would ...
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Insert code into the page context using a content script

...of usage would be: var formulaImageUrl = chrome.extension.getURL("formula.png"); var codeImageUrl = chrome.extension.getURL("code.png"); inject([ scriptFromSource("var formulaImageUrl = '" + formulaImageUrl + "';"), scriptFromSource("var codeImageUrl = '" + codeImageUrl + "';"), script...
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How can I extract embedded fonts from a PDF as valid font files?

...y you will see a variety of files: images as well as fonts. These include PNG, TTF, CFF, CID, etc. The image names will be like img-0412.png if the PDF object number of the image was 412. The fontnames will be like FGETYK+LinLibertineI-0966.ttf, if the font's PDF object number was 966. CFF (Compact...
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CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...是以线程为单位还是以进程为单位呢?也许大家已经通过测试程序摸索出答案,没错,是以线程为单位。今天我们就稍微再深入一下,通过分析CoInitialize的具体实现来印证我们的想法。 我们先来看看CoInitialize的汇编 769B2A24 ...