mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
||
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
||
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
|
|
||
|
|
/* Original author: bcampen@mozilla.com */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file defines a dirt-simple token bucket class.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef simpletokenbucket_h__
|
||
|
|
#define simpletokenbucket_h__
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#include "prinrval.h"
|
||
|
|
|
||
|
|
#include "m_cpp_utils.h"
|
||
|
|
|
||
|
|
namespace mozilla {
|
||
|
|
|
||
|
|
class SimpleTokenBucket {
|
||
|
|
public:
|
||
|
|
/*
|
||
|
|
* Create a SimpleTokenBucket with a given maximum size and
|
||
|
|
* token replenishment rate.
|
||
|
|
* (eg; if you want a maximum rate of 5 per second over a 7 second
|
||
|
|
* period, call SimpleTokenBucket b(5*7, 5);)
|
||
|
|
*/
|
||
|
|
SimpleTokenBucket(size_t bucket_size, size_t tokens_per_second);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Attempt to acquire a number of tokens. If successful, returns
|
||
|
|
* |num_tokens|, otherwise returns the number of tokens currently
|
||
|
|
* in the bucket.
|
||
|
|
* Note: To get the number of tokens in the bucket, pass something
|
||
|
|
* like UINT32_MAX.
|
||
|
|
*/
|
||
|
|
size_t getTokens(size_t num_tokens);
|
||
|
|
|
||
|
|
protected: // Allow testing to touch these.
|
||
|
|
uint64_t max_tokens_;
|
||
|
|
uint64_t num_tokens_;
|
||
|
|
size_t tokens_per_second_;
|
||
|
|
PRIntervalTime last_time_tokens_added_;
|
||
|
|
|
||
|
|
DISALLOW_COPY_ASSIGN(SimpleTokenBucket);
|
||
|
|
};
|
||
|
|
} // namespace mozilla
|
||
|
|
|
||
|
|
#endif // simpletokenbucket_h__
|
||
|
|
|