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/**
* Copyright (c) 2007-2012, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''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 REGENTS OR CONTRIBUTORS 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 <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "config.h"
#include "grep_proc.hh"
#include "vis_line.hh"
using namespace std;
static struct {
int l_number;
const char* l_value;
} MS_LINES[] = {
{10, ""},
{11, ""},
{12, ""},
{13, ""},
{0, ""},
{1, ""},
{2, ""},
};
class my_source : public grep_proc_source<vis_line_t> {
public:
my_source() : ms_current_line(0){};
bool grep_value_for_line(vis_line_t line_number, string& value_out)
{
bool retval = true;
assert(line_number == MS_LINES[this->ms_current_line].l_number);
value_out = MS_LINES[this->ms_current_line].l_value;
this->ms_current_line += 1;
return retval;
};
int ms_current_line;
};
class my_sleeper_source : public grep_proc_source<vis_line_t> {
bool grep_value_for_line(vis_line_t line_number, string& value_out)
{
sleep(1000);
return true;
};
};
class my_sink : public grep_proc_sink<vis_line_t> {
public:
my_sink() : ms_finished(false){};
void grep_match(grep_proc<vis_line_t>& gp,
vis_line_t line,
int start,
int end){};
void grep_end(grep_proc<vis_line_t>& gp) { this->ms_finished = true; };
bool ms_finished;
};
static void
looper(grep_proc<vis_line_t>& gp)
{
my_sink msink;
gp.set_sink(&msink);
while (!msink.ms_finished) {
vector<struct pollfd> pollfds;
gp.update_poll_set(pollfds);
poll(&pollfds[0], pollfds.size(), -1);
gp.check_poll_set(pollfds);
}
}
int
main(int argc, char* argv[])
{
int retval = EXIT_SUCCESS;
auto code
= lnav::pcre2pp::code::from_const("foobar", PCRE2_CASELESS).to_shared();
auto psuperv = std::make_shared<pollable_supervisor>();
{
my_source ms;
grep_proc<vis_line_t> gp(code, ms, psuperv);
gp.queue_request(10_vl, 14_vl);
gp.queue_request(0_vl, 3_vl);
gp.start();
looper(gp);
}
{
my_sleeper_source mss;
grep_proc<vis_line_t>* gp
= new grep_proc<vis_line_t>(code, mss, psuperv);
int status;
gp->queue_request();
gp->start();
assert(wait3(&status, WNOHANG, NULL) == 0);
delete gp;
assert(wait(&status) == -1);
assert(errno == ECHILD);
}
return retval;
}
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