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69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
/**
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* Copyright (c) 2015, Suresh Sundriyal
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef timer_hh
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#define timer_hh
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#include <exception>
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#include <errno.h>
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#include <signal.h>
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#include <sys/time.h>
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#include <sys/types.h>
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// Linux and BSD seem to name the function pointer to signal handler
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// differently. Linux names it 'sighandler_t' and BSD names it 'sig_t'. Instead
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// of depending on configure scripts to find out the type name, typedef it right
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// here.
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typedef void (*sighandler_t_)(int);
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namespace timer {
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class error : public std::exception {
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public:
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error(int err);
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int e_err;
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};
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class interrupt_timer {
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public:
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interrupt_timer(struct timeval, sighandler_t_);
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int arm_timer();
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void disarm_timer();
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bool is_armed();
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~interrupt_timer();
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private:
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sighandler_t_ new_handler;
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struct sigaction old_handler;
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struct itimerval new_val, old_val;
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bool armed;
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};
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} // namespace timer
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#endif
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