KSE, libpthread & libthr: almost newbie question
Julian Elischer
julian at elischer.org
Mon Oct 30 19:26:47 UTC 2006
Greg Lewis wrote:
> On Sun, Oct 29, 2006 at 09:24:14PM -0800, Julian Elischer wrote:
>> Greg Lewis wrote:
>>
>>> If you really want to know, just send the running process a SIGQUIT and
>>> it will dump the currently running threads to stdout. But yes, 1.4 and 1.5
>>> both use "native" threads which correspond 1:1 with OS threads (plus
>>> there are threads the JVM creates itself, as you note). The JVM threads
>>> include garbage collection and AWT event handlers at least.
>>>
>> I gather it doesn't use libpthread, but rather just the syscalls?
>
> No, it does use libpthread (or libthr, or libc_r if you so choose). What
> I'm saying is that the JVM maps a single Java thread to a single <pthread
> library of your choice> thread. How that maps to a kernel thread is
> then defined by the threading library.
>
> The point is that the JVM doesn't do any internal M:N business itself,
> which was the original point under discussion IIRC.
>
gotcha
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