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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SHRPX_IO_CONTROL_H
#define SHRPX_IO_CONTROL_H
#include "shrpx.h"
#include <cinttypes>
#include <vector>
#include <ev.h>
#include "shrpx_rate_limit.h"
namespace shrpx {
enum IOCtrlReason { SHRPX_NO_BUFFER = 1 << 0, SHRPX_MSG_BLOCK = 1 << 1 };
class IOControl {
public:
IOControl(RateLimit *lim);
~IOControl();
void pause_read(IOCtrlReason reason);
// Returns true if read operation is enabled after this call
bool resume_read(IOCtrlReason reason);
// Clear all pause flags and enable read
void force_resume_read();
private:
RateLimit *lim_;
uint32_t rdbits_;
};
} // namespace shrpx
#endif // SHRPX_IO_CONTROL_H
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