native-code

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Java is slow. That's more than an "urban legend", it seems to be a fact. You don't use it for live-coding because of latency and you don't use it for clusters/parallel computing. There are thousands of benchmarks out there, specially "Java vs C# vs C++".

How to identify library file that contains implementation of native methods ? Ex. public native String intern(); Where can I find implementation (source code) of String.intern() method ? Found answer for String.intern() with quick google search constant pool symbol table cpp : symbol table hpp Yet to find answer for generic way to identify native implementation/library Download this JDK 6 library: http://download.java.net/jdk6/source/ and search through sources. But I think, some code implementations are not accessible as OpenSource There is no general approach to find source code for (any)

It doesn't look like it is written in JavaScript. if you type _now in the console, you only get function now() { [native code] } You usually only get that when you try to look at some built-in method where the inner-workings are invisible to the browser. setTimeout =>function setTimeout() { [native code] } Has _.now done something with "native code" of the JavaScript engine? megawac By default _.now is just Date.now , except in environments that do not support it. Where Date.now isn't supported _.now will use this implementation instead (same goes for lodash) _.now = function() { return (new

I am trying to print log messages within core Android framework files. For example, I tried logging messages within MediaRecorderClient.cpp under frameworks\base\media\libmediaplayerservice\ . I've tried LOGV , LOGE , LOGD , printf , and __android_log_print , without any success. Which command should I use to print log messages? Log should be used, but it will print to logcat not system print. Example: Log.d("filter", example text); // filter is any tag you want to use as filter You can open logcat in eclipse from window-show view -> other -> android -> logcat What kind of error do you receive

I've downloaded the latest com4j jars and I'm trying to run through the most simple of their examples. I'm on Windows 7 64 bit and using a 64 bit JVM. When I run the command (from the com4j tutorial): java -jar tlbimp.jar -o wsh -p test.wsh %WINDIR%\system32\wshom.ocx I get: Exception in thread "main" java.lang.UnsatisfiedLinkError: com4j-amd64.dll: %1 is not a valid Win32 application at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(Unknown Source) at java.lang.ClassLoader.loadLibrary(Unknown Source) at java.lang.Runtime.load0(Unknown Source) at

If you are running code that makes calls to a native library in Java, what is the usual way of freeing memory allocated by these libraries when the memory allocation should last for the lifetime of the object? In C++, I would use destructors, but Java never really had those and has them even less now . The specific case I'm most interested in is JOCL , where I have an object that wraps a compiled OpenCL kernel and all of the arguments thereto that are always the same. Structures representing the compiled kernel and the arguments are all allocated on the library side, and JOCL provides a method

I'm developing on SGS2 api v.16 I have two applications: native and Java From the native app I open a Unix pipe with mkfifo() function and write some string to it. And in the java app I'm trying to read the string, but somehow the app blocks and I don't know why, no indication in the logcat for why it blocked. The 2 apps have android:sharedUserId="my.Id" in the manifest, and the share worked for sure. In the logcat I can see the "opening input stream" log, but no log after that.. Is there a recommended way to read from a pipe file in Java? NOTE: if I open a regular file with open(...) instead