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125 lines
4.2 KiB
C
125 lines
4.2 KiB
C
/*
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Serval DNA file descriptor queue
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Copyright (C) 2012-2013 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/*
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Portions Copyright (C) 2013 Petter Reinholdtsen
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Some rights reserved
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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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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SERVAL_DNA__FDQUEUE_H
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#define __SERVAL_DNA__FDQUEUE_H
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#ifdef HAVE_POLL_H
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#include <poll.h>
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#endif
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#include "os.h"
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#include "log.h"
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struct profile_total {
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struct profile_total *_next;
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int _initialised;
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const char *name;
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time_ms_t max_time;
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time_ms_t total_time;
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time_ms_t child_time;
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int calls;
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};
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struct call_stats{
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time_ms_t enter_time;
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time_ms_t child_time;
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struct profile_total *totals;
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struct call_stats *prev;
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};
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struct sched_ent;
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typedef void (*ALARM_FUNCP) (struct sched_ent *alarm);
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struct sched_ent{
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struct sched_ent *_next;
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struct sched_ent *_prev;
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ALARM_FUNCP function;
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void *context;
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struct pollfd poll;
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// when we should first consider the alarm
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time_ms_t alarm;
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// the order we will prioritise the alarm
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time_ms_t deadline;
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struct profile_total *stats;
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int _poll_index;
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};
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int is_scheduled(const struct sched_ent *alarm);
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int is_watching(struct sched_ent *alarm);
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int _schedule(struct __sourceloc, struct sched_ent *alarm);
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int _unschedule(struct __sourceloc, struct sched_ent *alarm);
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int _watch(struct __sourceloc, struct sched_ent *alarm);
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int _unwatch(struct __sourceloc, struct sched_ent *alarm);
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#define schedule(alarm) _schedule(__WHENCE__, alarm)
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#define unschedule(alarm) _unschedule(__WHENCE__, alarm)
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#define watch(alarm) _watch(__WHENCE__, alarm)
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#define unwatch(alarm) _unwatch(__WHENCE__, alarm)
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int fd_poll();
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/* function timing routines */
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int fd_clearstats();
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int fd_showstats();
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int fd_checkalarms();
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int fd_func_enter(struct __sourceloc, struct call_stats *this_call);
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int fd_func_exit(struct __sourceloc, struct call_stats *this_call);
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void dump_stack(int log_level);
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unsigned fd_depth();
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#define IN() static struct profile_total _aggregate_stats={NULL,0,__FUNCTION__,0,0,0,0}; \
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struct call_stats _this_call={.totals=&_aggregate_stats}; \
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fd_func_enter(__HERE__, &_this_call);
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#define OUT() fd_func_exit(__HERE__, &_this_call)
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#define RETURN(X) do { OUT(); return (X); } while (0)
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#define RETURNNULL(X) do { X; OUT(); return (NULL); } while (0)
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#define RETURNVOID do { OUT(); return; } while (0)
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#endif // __SERVAL_DNA__FDQUEUE_H
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