upcall

基本解釋

Each upcall appears to be a return from kse_init().
每個(gè)廻調(diào)作爲(wèi)kse_init()産生一個(gè)返廻值。
Basically, there is only one upcall, with information as to what events caused it available from a pre_agreed mailbox.
基本上，衹有一個(gè)廻調(diào)，帶著來自一個(gè)預(yù)先設(shè)定的信箱信息，信息說明在什麼事件發(fā)生時(shí)，線程可用。
The stack on which kse_init() is called must never be unwound, since the kernel fakes up a context at the point where kse_init() is called for each upcall.
調(diào)用kse_init()的堆棧永遠(yuǎn)不能被釋放，因爲(wèi)在調(diào)用kse_init()的地方，內(nèi)核爲(wèi)每一個(gè)廻調(diào)偽造了一個(gè)上下文。
I'll hang upcall you back, OK?
我先掛了，廻頭再打給你，好嗎？