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/*
* libmowgli: A collection of useful routines for programming.
* echoserver.c: Testing of the I/O system
*
* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* 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.
*/
#include <mowgli.h>
int helper_count = 0;
void timer_oneshot(mowgli_eventloop_helper_proc_t *helper)
{
mowgli_writef(helper->out_fd, "oneshot timer hit\n");
}
void timer_tick(mowgli_eventloop_helper_proc_t *helper)
{
static int ticks = 0;
mowgli_writef(helper->out_fd, "tick: %d\n", ++ticks);
if (ticks > 10)
mowgli_eventloop_break(helper->eventloop);
}
void helper_start(mowgli_eventloop_helper_proc_t *helper, void *userdata)
{
mowgli_eventloop_t *eventloop = helper->eventloop;
mowgli_writef(helper->out_fd, "hi from pid %d\n", getpid());
mowgli_timer_add(eventloop, "timer_tick", (mowgli_event_dispatch_func_t *) timer_tick, helper, 1);
mowgli_timer_add_once(eventloop, "timer_oneshot", (mowgli_event_dispatch_func_t *) timer_oneshot, helper, 5);
mowgli_eventloop_run(eventloop);
mowgli_writef(helper->out_fd, "eventloop halted\n");
mowgli_eventloop_destroy(eventloop);
}
void helper_read(mowgli_eventloop_t *eventloop, mowgli_eventloop_io_t *io, mowgli_eventloop_io_dir_t dir, void *userdata);
void helper_spawn(mowgli_eventloop_t *eventloop)
{
mowgli_eventloop_helper_proc_t *helper;
if (helper_count >= 100)
return;
helper = mowgli_helper_create(eventloop, helper_start, "Spawned helper", NULL);
mowgli_helper_set_read_cb(eventloop, helper, helper_read);
helper_count++;
}
void helper_read(mowgli_eventloop_t *eventloop, mowgli_eventloop_io_t *io, mowgli_eventloop_io_dir_t dir, void *userdata)
{
size_t r;
char buf[16384];
mowgli_eventloop_helper_proc_t *helper = mowgli_eventloop_io_helper(io);
bzero(buf, sizeof buf);
r = read(helper->in_fd, buf, sizeof buf);
if (r > 0)
printf("helper %p [%d/%d]: %s", helper, helper->child->pid, helper->in_fd, buf);
else if (r <= 0)
{
helper_count--;
mowgli_helper_destroy(eventloop, helper);
}
if ((rand() % helper_count) == 0)
helper_spawn(eventloop);
}
int main(int argc, char *argv[])
{
mowgli_eventloop_t *base_eventloop;
/* Bleh this is needed to ensure some systems can set the process title */
argv = mowgli_proctitle_init(argc, argv);
base_eventloop = mowgli_eventloop_create();
helper_spawn(base_eventloop);
mowgli_eventloop_run(base_eventloop);
return EXIT_SUCCESS;
}
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