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Support signal mechanism for ch8(only works on signal-thread apps)

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This commit is contained in:
Yifan Wu 2022-01-23 13:14:56 -08:00
parent 59f13cb536
commit 26bc01f3bc
17 changed files with 235 additions and 17 deletions
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17
os/src/syscall/process.rs
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@ -1,8 +1,8 @@
use crate::fs::{open_file, OpenFlags};
use crate::mm::{translated_ref, translated_refmut, translated_str};
use crate::task::{
current_process, current_task, current_user_token, exit_current_and_run_next,
suspend_current_and_run_next,
current_process, current_task, current_user_token, exit_current_and_run_next, pid2process,
suspend_current_and_run_next, SignalFlags,
};
use crate::timer::get_time_ms;
use alloc::string::String;
@ -103,3 +103,16 @@ pub fn sys_waitpid(pid: isize, exit_code_ptr: *mut i32) -> isize {
}
// ---- release current PCB automatically
}
pub fn sys_kill(pid: usize, signal: u32) -> isize {
if let Some(process) = pid2process(pid) {
if let Some(flag) = SignalFlags::from_bits(signal) {
process.inner_exclusive_access().signals |= flag;
0
} else {
-1
}
} else {
-1
}
}