srn_fiber_mutex_t Struct Reference

#include <mutex.h>

Collaboration diagram for srn_fiber_mutex_t:

Public Member Functions
	_Atomic (srn_fiber_t *) state
	A pointer to the waiter's stack head.

Data Fields
srn_fiber_t *	waiters_head
	A private (In the sense that it only touched only by the current lock holder during unlock) pointer to the head of the waiters in order.

Detailed Description

Definition at line 44 of file mutex.h.

Member Function Documentation

_Atomic()

srn_fiber_mutex_t::_Atomic

(

srn_fiber_t *

)

A pointer to the waiter's stack head.

nullptr == unlocked. Contending fibers push onto the stack lock free, and the holder drains it (it's basically a treiber stack). So having a waiter implies the lock is acquired by someone.

Field Documentation

waiters_head

srn_fiber_t* srn_fiber_mutex_t::waiters_head

A private (In the sense that it only touched only by the current lock holder during unlock) pointer to the head of the waiters in order.

Since it is private it needs not to be atomic. The holder fills it in one reversed batch when it drains the incoming stack, then pops one fiber from its head per unlock. Threaded through srn_fiber_t.link.

Definition at line 54 of file mutex.h.

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The documentation for this struct was generated from the following file:

• serene/rt/fiber/mutex.h