10 May
1999
10 May
'99
11:05 a.m.
"Adam 'WeirdArms' Wiggins" <awiggins@cse.unsw.edu.au> writes:
I think they were seperate in the Intel for efficiency reasons,
Yes, that's right: The way the bits are laid out in thread ids, it takes the kernel only one AND and one OR to compute the address of the thread control block; no shifts or lookups necessary. (Fiasco actually currently adds a shift because the kernel stack contained in the thread control blocks is larger to accommodate for the fact that higher-level languages need more stack space.) Michael -- hohmuth@innocent.com, hohmuth@inf.tu-dresden.de http://home.pages.de/~hohmuth/