Architecture/Proposal/Advanced Threading-Architecture
From Apache OpenOffice Wiki
state: sketch
Concept: A purely event driven threading architecture, including asynchronous process related signals, I/O and window messages.
- Pros
- Not calling blocking system calls leads to 'short' lasting mutex acquisitions.
- No hand crafted reschedules necessary anymore.
- Easy utilization of Hyper Threading, multi cores and SMP.
- Controlable CPU utilization and possible avoidance of over utilization.
- 'Simple' architecture.
- One single location where to create threads.
- Cons
- (assumed to be) Hard to implement.
Pseudo Code for event loop:
void dispatch(int signal) {
...
}
int quit;
sigset_t sigset;
int main(void) {
int signal;
while(!quit) {
sigwait(&sigset, &signal);
dispatch(signal);
}
return 0;
}