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[zion] Add a thread wait syscall

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This commit is contained in:
Drew Galbraith 2023-06-22 02:17:50 -07:00
parent f0e8ce14a4
commit 36d82370c1
9 changed files with 45 additions and 8 deletions
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13
zion/object/thread.cpp
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@ -69,5 +69,18 @@ void Thread::Exit() {
#endif
state_ = FINISHED;
process_.CheckState();
while (!blocked_threads_.size() == 0) {
auto thread = blocked_threads_.PopFront();
thread->SetState(Thread::RUNNABLE);
gScheduler->Enqueue(thread);
}
gScheduler->Yield();
}
void Thread::Wait() {
// FIXME: We need synchronization code here.
auto thread = gScheduler->CurrentThread();
thread->SetState(Thread::BLOCKED);
blocked_threads_.PushBack(thread);
gScheduler->Yield();
}

4
zion/object/thread.h
View file

@ -48,6 +48,8 @@ class Thread : public KernelObject, public glcr::IntrusiveListNode<Thread> {
void SetState(State state) { state_ = state; }
void Exit();
void Wait();
private:
friend class glcr::MakeRefCountedFriend<Thread>;
Thread(Process& proc, uint64_t tid);
@ -68,4 +70,6 @@ class Thread : public KernelObject, public glcr::IntrusiveListNode<Thread> {
// Stack pointer to take when returning from userspace.
// I don't think me mind clobbering the stack here.
uint64_t rsp0_start_;
glcr::IntrusiveList<Thread> blocked_threads_;
};