>>>>> "Matt" == Matt Welsh <[EMAIL PROTECTED]> writes:
Matt> Turns out this is not as easy as it could be -- because even
Matt> though you call system calls like read(), write(), and
Matt> fcntl() from native code, these are trapped by the Java
Matt> runtime library to do magic things when green threads are
Matt> used!
Why don't you use native threads? The IO-wrappers are one of the main
reasons why JNI and green threads don't mix well and we don't support
JNI on green threads..
Matt> The solution? Go behind JNI's back, and get the "real"
Matt> system call handles by using dlopen/dlsym on /lib/libc.so.6
Matt> (or wherever your standard C library happens to be
Matt> installed), and call them directly.
That's ugly.
Matt> The good news is that it seems to work. Note that when
Matt> native threads are used, the JDK does not attempt any funny
Matt> business, and there are no problems.
So don't use green threads.
Juergen
--
Juergen Kreileder, Blackdown Java-Linux Team
http://www.blackdown.org/java-linux.html
JVM'01: http://www.usenix.org/events/jvm01/
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