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📁 ..
📄 ChangeLog(69.13 KB)
📄 ChangeLog-1.4(16.96 KB)
📄 ChangeLog-2.0(81.39 KB)
📄 Doxyfile(9.97 KB)
📄 LICENSE(4.42 KB)
📄 Makefile.am(8.43 KB)
📄 Makefile.in(130.03 KB)
📄 Makefile.nmake(2.29 KB)
📁 WIN32-Code
📄 aclocal.m4(41.45 KB)
📄 arc4random.c(12.83 KB)
📄 autogen.sh(308 B)
📄 buffer.c(80.17 KB)
📄 buffer_iocp.c(8.44 KB)
📄 bufferevent-internal.h(17.1 KB)
📄 bufferevent.c(24.78 KB)
📄 bufferevent_async.c(17.75 KB)
📄 bufferevent_filter.c(15.47 KB)
📄 bufferevent_openssl.c(38.39 KB)
📄 bufferevent_pair.c(9.48 KB)
📄 bufferevent_ratelim.c(29.51 KB)
📄 bufferevent_sock.c(17.78 KB)
📁 build-aux
📄 changelist-internal.h(4.52 KB)
📁 compat
📄 config.h.in(13.78 KB)
📄 configure(521.57 KB)
📄 configure.ac(23.07 KB)
📄 defer-internal.h(2.7 KB)
📄 devpoll.c(7.7 KB)
📄 epoll.c(14.22 KB)
📄 epoll_sub.c(2.33 KB)
📄 epolltable-internal.h(40.4 KB)
📄 evbuffer-internal.h(12.51 KB)
📄 evconfig-private.h(1.33 KB)
📄 evconfig-private.h.in(1.21 KB)
📄 evdns.c(127.11 KB)
📄 event-internal.h(16.74 KB)
📄 event.c(99.03 KB)
📄 event_iocp.c(7.52 KB)
📄 event_rpcgen.py(54.3 KB)
📄 event_tagging.c(14.27 KB)
📄 evmap-internal.h(4.78 KB)
📄 evmap.c(28.2 KB)
📄 evport.c(11.72 KB)
📄 evrpc-internal.h(5.58 KB)
📄 evrpc.c(28.68 KB)
📄 evsignal-internal.h(2.57 KB)
📄 evthread-internal.h(13.99 KB)
📄 evthread.c(12.61 KB)
📄 evthread_pthread.c(4.84 KB)
📄 evthread_win32.c(8.39 KB)
📄 evutil.c(68.14 KB)
📄 evutil_rand.c(5.08 KB)
📄 evutil_time.c(15.82 KB)
📄 ht-internal.h(28.5 KB)
📄 http-internal.h(5.82 KB)
📄 http.c(117.24 KB)
📁 include
📄 iocp-internal.h(7.52 KB)
📄 ipv6-internal.h(2.46 KB)
📄 kqueue-internal.h(1.94 KB)
📄 kqueue.c(14.33 KB)
📄 libevent.pc.in(317 B)
📄 libevent_openssl.pc.in(372 B)
📄 libevent_pthreads.pc.in(384 B)
📄 listener.c(20.81 KB)
📄 log-internal.h(3.14 KB)
📄 log.c(5.51 KB)
📁 m4
📄 make-event-config.sed(588 B)
📄 minheap-internal.h(6.78 KB)
📄 mm-internal.h(3.32 KB)
📄 poll.c(7.98 KB)
📄 ratelim-internal.h(4 KB)
📄 select.c(8.5 KB)
📄 signal.c(12.22 KB)
📄 strlcpy-internal.h(366 B)
📄 strlcpy.c(2.52 KB)
📁 test
📄 time-internal.h(3 KB)
📄 util-internal.h(15.18 KB)
📄 whatsnew-2.0.txt(25.73 KB)
📄 whatsnew-2.1.txt(29.51 KB)
📄 win32select.c(10.29 KB)

Editing: ratelim-internal.h

/*
 * Copyright (c) 2009-2012 Niels Provos and Nick Mathewson
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef RATELIM_INTERNAL_H_INCLUDED_
#define RATELIM_INTERNAL_H_INCLUDED_

#ifdef __cplusplus
extern "C" {
#endif

#include "event2/util.h"

/** A token bucket is an internal structure that tracks how many bytes we are
 * currently willing to read or write on a given bufferevent or group of
 * bufferevents */
struct ev_token_bucket {
	/** How many bytes are we willing to read or write right now? These
	 * values are signed so that we can do "defecit spending" */
	ev_ssize_t read_limit, write_limit;
	/** When was this bucket last updated?  Measured in abstract 'ticks'
	 * relative to the token bucket configuration. */
	ev_uint32_t last_updated;
};

/** Configuration info for a token bucket or set of token buckets. */
struct ev_token_bucket_cfg {
	/** How many bytes are we willing to read on average per tick? */
	size_t read_rate;
	/** How many bytes are we willing to read at most in any one tick? */
	size_t read_maximum;
	/** How many bytes are we willing to write on average per tick? */
	size_t write_rate;
	/** How many bytes are we willing to write at most in any one tick? */
	size_t write_maximum;

/* How long is a tick?  Note that fractions of a millisecond are
	 * ignored. */
	struct timeval tick_timeout;

/* How long is a tick, in milliseconds?  Derived from tick_timeout. */
	unsigned msec_per_tick;
};

/** The current tick is 'current_tick': add bytes to 'bucket' as specified in
 * 'cfg'. */
int ev_token_bucket_update_(struct ev_token_bucket *bucket,
    const struct ev_token_bucket_cfg *cfg,
    ev_uint32_t current_tick);

/** In which tick does 'tv' fall according to 'cfg'?  Note that ticks can
 * overflow easily; your code needs to handle this. */
ev_uint32_t ev_token_bucket_get_tick_(const struct timeval *tv,
    const struct ev_token_bucket_cfg *cfg);

/** Adjust 'bucket' to respect 'cfg', and note that it was last updated in
 * 'current_tick'.  If 'reinitialize' is true, we are changing the
 * configuration of 'bucket'; otherwise, we are setting it up for the first
 * time.
 */
int ev_token_bucket_init_(struct ev_token_bucket *bucket,
    const struct ev_token_bucket_cfg *cfg,
    ev_uint32_t current_tick,
    int reinitialize);

int bufferevent_remove_from_rate_limit_group_internal_(struct bufferevent *bev,
    int unsuspend);

/** Decrease the read limit of 'b' by 'n' bytes */
#define ev_token_bucket_decrement_read(b,n)	\
	do {					\
		(b)->read_limit -= (n);		\
	} while (0)
/** Decrease the write limit of 'b' by 'n' bytes */
#define ev_token_bucket_decrement_write(b,n)	\
	do {					\
		(b)->write_limit -= (n);	\
	} while (0)

#ifdef __cplusplus
}
#endif

#endif

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Editing: ratelim-internal.h

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