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Stage2: multiple user threads based on uniprocessor, see new added test race_adder and threads.

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This commit is contained in:
Yifan Wu 2021-10-02 16:18:05 -07:00
parent 4fa4e9cab4
commit a341b338c8
12 changed files with 254 additions and 57 deletions
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17
user/src/syscall.rs
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@ -11,6 +11,9 @@ const SYSCALL_GETPID: usize = 172;
const SYSCALL_FORK: usize = 220;
const SYSCALL_EXEC: usize = 221;
const SYSCALL_WAITPID: usize = 260;
const SYSCALL_THREAD_CREATE: usize = 1000;
const SYSCALL_GETTID: usize = 1001;
const SYSCALL_WAITTID: usize = 1002;
fn syscall(id: usize, args: [usize; 3]) -> isize {
let mut ret: isize;
@ -77,4 +80,16 @@ pub fn sys_exec(path: &str, args: &[*const u8]) -> isize {
pub fn sys_waitpid(pid: isize, exit_code: *mut i32) -> isize {
syscall(SYSCALL_WAITPID, [pid as usize, exit_code as usize, 0])
}
}
pub fn sys_thread_create(entry: usize) -> isize {
syscall(SYSCALL_THREAD_CREATE, [entry, 0, 0])
}
pub fn sys_gettid() -> isize {
syscall(SYSCALL_GETTID, [0; 3])
}
pub fn sys_waittid(tid: usize) -> isize {
syscall(SYSCALL_WAITTID, [tid, 0, 0])
}