Struct kernel::syscall::SystemCall

pub struct SystemCall<'a> {
    thread: &'a Thread,
}

The SystemCall struct provides an interface for invoking system calls on a given thread.

Fields

thread: &'a Thread

Implementations

impl SystemCall<'_>

pub async fn sys_read( &self, fd: usize, buffer: UserPtr<u8>, _length: usize ) -> (isize, ControlFlow)

Reads the content from a file descriptor and writes them to a buffer.

pub fn sys_write( &self, fd: usize, buffer: UserPtr<u8>, length: usize ) -> (isize, ControlFlow)

Writes the contents of a buffer to a file descriptor.

impl SystemCall<'_>

pub fn sys_exit(&self, exit_code: usize) -> (isize, ControlFlow)

Terminates the current thread with the given exit code.

pub fn sys_sched_yield(&self) -> (isize, ControlFlow)

Yields the CPU to another thread.

pub fn sys_fork(&self) -> (isize, ControlFlow)

Forks the current process and create a new child process.

pub async fn sys_waitpid( &self, pid: isize, wait_status: UserPtr<usize> ) -> (isize, ControlFlow)

Waits for a child process with the given process to terminate, and return the PID and exit.

pub fn sys_exec(&self, path: UserPtr<u8>) -> (isize, ControlFlow)

Replaces the current process with a new process loaded from the executable file with a given name.

impl SystemCall<'_>

pub fn sys_get_time(&self) -> (isize, ControlFlow)

Returns the current system time in milliseconds.

impl<'a> SystemCall<'a>

pub fn new(thread: &'a Thread) -> Self

Constructs a new SystemCall instance with the given thread.

pub async fn execute(&mut self) -> ControlFlow

Invokes a system call with the given arguments.