Thread

NAME

thread - runnable / computation entity

SYNOPSIS

TODO

DESCRIPTION

The thread object is the construct that represents a time-shared CPU execution context. Thread objects live associated to a particular Process Object which provides the memory and the handles to other objects necessary for I/O and computation.

Lifetime

A thread can be created implicitly by calling sys_process_start(), in which case the new thread is the “main thread” and the thread entrypoint is defined by the previously loaded binary. Or it can be created by calling sys_thread_create() which takes the entrypoint as a parameter.

A thread terminates when it returns from executing the routine specified as the entrypoint or by calling sys_thread_exit().

SYSCALLS

• thread_create - create a new thread within a process
• thread_exit - exit the current thread
• thread_read_state - read register state from a thread
• thread_start - cause a new thread to start executing
• thread_write_state - modify register state of a thread

• task_resume - cause a suspended task to continue running
• task_bind_exception_port - attach an exception port to a task
• task_kill - cause a task to stop running