# The SyncReaderWriter class

(PECL sync >= 1.0.0)

## Introduction

A cross-platform, native implementation of named and unnamed reader-writer objects.

A reader-writer object allows many readers or one writer to access a resource. This is an efficient solution for managing resources where access will primarily be read-only but exclusive write access is occasionally necessary.

## Class synopsis

class SyncReaderWriter {
/* Methods */
public __construct(string `$name` = ?, int `$autounlock` = 1)
public readlock(int `$wait` = -1): bool
public readunlock(): bool
public writelock(int `$wait` = -1): bool
public writeunlock(): bool
}

## Table of Contents

- SyncReaderWriter::__construct — Constructs a new SyncReaderWriter object
- SyncReaderWriter::readlock — Waits for a read lock
- SyncReaderWriter::readunlock — Releases a read lock
- SyncReaderWriter::writelock — Waits for an exclusive write lock
- SyncReaderWriter::writeunlock — Releases a write lock

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