Il 14/05/2012 05:47, bang bang ha scritto: > Hi, everyone: > I am very sorry to trouble you, but I have a question that need > your help. As we know, sigaction is not defined in windows, but qemu can > run on windows, I want to know how the qemu to implement sigaction so > that it can run on windows an linux. I am very sorry to not find their > implementation with windows.
It doesn't use sigaction. :) Whenever the POSIX version would send a signal to a thread, the Windows version does the following: - call SuspendThread on the receiving thread; - execute the signal handler code in the sending thread; - call ResumeThread on the receiving thread. It is not exactly the same thing, but it is enough for QEMU's needs. Paolo
