摘要： 1. java nativepackage com.demo;public class DemoNative { public static native void getData(String key); static{ System.loadLibrary("demojni"); }}2. Android.mkLOCAL_PATH:= $(call my-dir)include $(CLEAR_VARS)LOCAL_SRC_FILES := com_demo.DemoNamtive.cppLOCAL_C_INCLUDES += \ $(JNI_... 阅读全文

摘要： 1. jps 类似 ps -q 只显示pid -v 传给jvm的参数2. jvisualvm可视化vm状态查看3. jstack - jvm stack trace4. jdb 调试工具 linux: java -classpath .;..\lib\xSocket-2.8.15.jar;%classpath% -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n demo.TestServer jdb -attach 8000 windows:java -classpath .;..\lib\x... 阅读全文

摘要： 1. 写java实现Dm.java编译生成class文件2. 用javah生成对应的Dm.h3. 实现Dm.h中的函数->Dm.c4. 通过命令行编译：gcc -I/usr/lib/jvm/java-6-sun/include -I/usr/lib/jvm/java-6-sun/include/linux -fPIC -shared -o libDm.so Dm.c5. 运行需要增加path路径，java -Djava.library.path="." Dm 阅读全文

摘要： 1.#include "shared.h"unsigned int add(unsigned int a, unsigned int b){ printf("\n Inside add()\n"); return (a+b);}2.#include<stdio.h>extern unsigned int add(unsigned int a, unsigned int b);3.gcc -c -Wall -Werror -fPIC shared.cgcc -shared -o libshared.so shared.o4.#include&l 阅读全文

摘要： 1. 下载http://bigota.d.miui.com/tools/miui_ns.zip2. 下载 http://android.clients.google.com/packages/ota/google_crespo/1ada25375426.signed-soju-ota-189904.1ada2537.zip http://android.clients.google.com/packages/ota/google_crespo/VQ8PQk_V.zip Superuser-3.0.7_mod_CN.zip 并拷贝到sdcard根目录下3. 关机，然后电源+音... 阅读全文

摘要： 带符号的二进制在 <out>/target/product/generic/symbols/system/bin/目录下 阅读全文

摘要： 用法：rsync options source destination-z compress-r recursive-a preserve timestamp--max-size file maximum sizersync -zva --max-size='1024K' remoteterm@192.168.2.1:/var/lib/ /local/tmp/ 阅读全文

摘要： 1. tcpdump ==> dump traffic on a network2. iostat ==> apt-get install sysstat3. mpstat --> processor related statistics4. vmstat ==> virtual memory stat5. pmap ==> process memory map6. strace ==> trace system call and signal7. lsof ==> list open files 阅读全文

摘要： Design for failure 阅读全文

摘要： int pthread_attr_init(pthread_attr_t *attr)int pthread_attr_destroy(pthread_attr_t *attr)int pthread_attr_getdetachstate(const pthread_attr_t * attr, int *detachstate)int pthread_attr_setdetachstate(pthread_attr_t * attr, int detachstate) PTHREAD_CREATE_DETACHED / PTHREAD_CREATE_JOINABLEint pthread. 阅读全文