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Implement mpsc using semaphores.

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This commit is contained in:
Yifan Wu 2021-10-10 17:20:53 -07:00
parent 9bc1e8d2e9
commit 45c33f2ce2
8 changed files with 187 additions and 2 deletions
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6
os/src/syscall/mod.rs
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@ -18,6 +18,9 @@ const SYSCALL_WAITTID: usize = 1002;
const SYSCALL_MUTEX_CREATE: usize = 1010;
const SYSCALL_MUTEX_LOCK: usize = 1011;
const SYSCALL_MUTEX_UNLOCK: usize = 1012;
const SYSCALL_SEMAPHORE_CREATE: usize = 1020;
const SYSCALL_SEMAPHORE_UP: usize = 1021;
const SYSCALL_SEMAPHORE_DOWN: usize = 1022;
mod fs;
mod process;
@ -51,6 +54,9 @@ pub fn syscall(syscall_id: usize, args: [usize; 3]) -> isize {
SYSCALL_MUTEX_CREATE => sys_mutex_create(args[0] == 1),
SYSCALL_MUTEX_LOCK => sys_mutex_lock(args[0]),
SYSCALL_MUTEX_UNLOCK => sys_mutex_unlock(args[0]),
SYSCALL_SEMAPHORE_CREATE => sys_semaphore_creare(args[0]),
SYSCALL_SEMAPHORE_UP => sys_semaphore_up(args[0]),
SYSCALL_SEMAPHORE_DOWN => sys_semaphore_down(args[0]),
_ => panic!("Unsupported syscall_id: {}", syscall_id),
}
}