Module os::syscall::process

Process management syscalls

Structs

TaskInfo

Task information

TimeVal

Functions

sys_exec

sys_exit

sys_fork

sys_get_time

YOUR JOB: get time with second and microsecond HINT: You might reimplement it with virtual memory management. HINT: What if TimeVal is splitted by two pages ?

sys_getpid

sys_mmap

YOUR JOB: Implement mmap.

sys_munmap

YOUR JOB: Implement munmap.

sys_sbrk

change data segment size

sys_set_priority

sys_spawn

YOUR JOB: Implement spawn. HINT: fork + exec =/= spawn

sys_task_info

YOUR JOB: Finish sys_task_info to pass testcases HINT: You might reimplement it with virtual memory management. HINT: What if TaskInfo is splitted by two pages ?

sys_waitpid

If there is not a child process whose pid is same as given, return -1. Else if there is a child process but it is still running, return -2.

sys_yield