On 14 Dec 2007, at 11:44, Michael Schnell wrote:
No, TThread is either heavy or middle-weight, according to the
definitions at
http://whatis.techtarget.com/definition/0,,sid9_gci814910,00.html
Of course it would be possible to include a multitasking scheduler
in the RTL to avoid any system calls and share any resources.
(AFAIK, for Linux there somewhere was an alternate PThread library
that does exactly in order to avoid slight Posix incompatibilities
caused by "Linux Threads". But same is not necessary any more as
the OS-based NPTL is said to perform just as good and Posix-
compatible.)
I.e. if using Linux with NPTL (or that old special PThread
library), I don't see how you could use "lighter" threads than with
TThread.
If using Windows, (with it's quite heavy native Threads), pure user
mode threads might be a lot "lighter".
Windows has built-in support for user-space scheduled threads.
They're called fibers (multiple fibers are bound to one thread; the
OS schedules threads and you pick which fiber runs).
Jonas
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