ovni/ovni2prv.c

/* Copyright (c) 2021 Barcelona Supercomputing Center (BSC)
 * SPDX-License-Identifier: GPL-3.0-or-later */

#include <dirent.h>
#include <errno.h>
#include <linux/limits.h>
#include <stdatomic.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

#include "ovni.h"
#include "trace.h"

static void
emit(struct ovni_ev *ev, int row)
{
	static uint64_t firstclock = 0;
	int64_t delta;

	if (firstclock == 0)
		firstclock = ovni_ev_get_clock(ev);

	delta = ovni_ev_get_clock(ev) - firstclock;

	//#Paraver (19/01/38 at 03:14):00000000000000000000_ns:0:1:1(00000000000000000008:1)
	// 2:0:1:1:7:1540663:6400010:1
	// 2:0:1:1:7:1540663:6400015:1
	// 2:0:1:1:7:1540663:6400017:0
	// 2:0:1:1:7:1542091:6400010:1
	// 2:0:1:1:7:1542091:6400015:1
	// 2:0:1:1:7:1542091:6400025:1
	// 2:0:1:1:7:1542091:6400017:0

	printf("2:0:1:1:%d:%ld:%d:%d\n", row, delta, ev->header.category, ev->header.value);
}

static void
dump_events(struct ovni_trace *trace)
{
	size_t i;
	int f, row;
	uint64_t minclock, lastclock;
	struct ovni_ev *ev;
	struct ovni_stream *stream;

	/* Load events */
	for (i = 0; i < trace->nstreams; i++) {
		stream = &trace->stream[i];
		ovni_load_next_event(stream);
	}

	lastclock = 0;

	while (1) {
		f = -1;
		minclock = 0;

		/* Select next event based on the clock */
		for (i = 0; i < trace->nstreams; i++) {
			stream = &trace->stream[i];

			if (!stream->active)
				continue;

			ev = stream->cur_ev;
			if (f < 0 || ovni_ev_get_clock(ev) < minclock) {
				f = i;
				minclock = ovni_ev_get_clock(ev);
			}
		}

		// fprintf(stderr, "f=%d minclock=%u\n", f, minclock);

		if (f < 0)
			break;

		stream = &trace->stream[f];

		if (lastclock >= ovni_ev_get_clock(stream->cur_ev)) {
			fprintf(stderr, "warning: backwards jump in time\n");
		}

		/* Emit current event */
		row = f + 1;
		emit(stream->cur_ev, row);

		lastclock = ovni_ev_get_clock(stream->cur_ev);

		/* Read the next one */
		ovni_load_next_event(stream);

		/* Unset the index */
		f = -1;
		minclock = 0;
	}
}

int
main(int argc, char *argv[])
{
	char *tracedir;
	struct ovni_trace *trace = calloc(1, sizeof(struct ovni_trace));

	if (trace == NULL) {
		perror("calloc");
		exit(EXIT_FAILURE);
	}

	if (argc != 2) {
		fprintf(stderr, "missing tracedir\n");
		exit(EXIT_FAILURE);
	}

	tracedir = argv[1];

	if (ovni_load_trace(trace, tracedir))
		return 1;

	if (ovni_load_streams(trace))
		return 1;

	printf("#Paraver (19/01/38 at 03:14):00000000000000000000_ns:0:1:1(%ld:1)\n",
		trace->nstreams);

	dump_events(trace);

	ovni_free_streams(trace);

	fflush(stdout);

	free(trace);

	return 0;
}