nsbaci::services::runtime::Semaphore Class Reference

Counting semaphore for process synchronization. More...

#include <semaphore.h>

Public Member Functions
	Semaphore (int32_t initialCount=0)
bool	wait (nsbaci::types::ThreadID currentThread)
	P operation (wait/decrement).
nsbaci::types::ThreadID	signal ()
	V operation (signal/increment).
int32_t	getCount () const
	Get current count (for debugging).
bool	hasWaiting () const
	Check if any threads are blocked.

Detailed Description

Counting semaphore for process synchronization.

Created at runtime when StoreSemaphore instruction executes.

Member Function Documentation

signal()

nsbaci::types::ThreadID nsbaci::services::runtime::Semaphore::signal

(

)

V operation (signal/increment).

Returns

ThreadID to wake, or 0 if none waiting

wait()

bool nsbaci::services::runtime::Semaphore::wait

(

nsbaci::types::ThreadID

currentThread

)

P operation (wait/decrement).

Parameters

currentThread

The thread attempting to wait

Returns

true if thread can proceed, false if it must block

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The documentation for this class was generated from the following files:

• semaphore.h
• semaphore.cpp