[Work accumulation] Android Dynamic Library & Jni_onload

Bionic libc doesn ' t load dependencies for current. so file (diff from Windows or Linux)

So a explicit calling of Java's system.loadlibrary () is needed, in order to load depedency libraries. Otherwise the original so would fail to load.

Jni_onload'll be called mostly on system.loadlibrary () or equavilent calls

System.loadlibrary ("gnustl_shared");

The. so file are loaded & and symbol get loaded by common dynamic library function:

Dlopen

Dlsym

If the symbol "Jni_onload" is not found in the Lib, Dalvik would simply do nothing, but a Debug log:no jni_onload found in Xxx.so, skipping init.

Details at:

Dalvik/vm/native.c

Natvieacitviy:jni_onload is not get called

For the startup library, speicified by " Android.app.lib_name ", Jni_onload is not get called,

Only libs loaded by System.loadlibrary () would.

[Work accumulation] Android Dynamic Library & Jni_onload