Relocate source fiiles to src/ subdirectory

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/bench.c

@@ -0,0 +1,236 @@
+/*
+ * Copyright 2003 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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.
+ *
+ *
+ * Mon 03/10/2003 - Modified by Davide Libenzi <davidel@xmailserver.org>
+ *
+ *     Added chain event propagation to improve the sensitivity of
+ *     the measure respect to the event loop efficency.
+ *
+ * Sun 04/08/2013 - Modified by Joachim Nilsson <troglobit@gmail.com>
+ *
+ *     Adaptations for libuEv, no libev/libevent API wrappers available.
+ *     Reindent to Linux coding style
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#else
+#define USE_PIPES
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "uev.h"
+
+#define UNUSED(arg) arg __attribute__ ((unused))
+
+typedef struct {
+	int index;
+} myarg_t;
+
+static int num_pipes, num_active, num_writes;
+static int timers, count, writes, fired;
+static myarg_t *args;
+static int *pipes;
+static uev_t *evio;
+static uev_t *evto;
+
+static void read_cb(uev_t *w, void *arg, int UNUSED(events))
+{
+	int idx, widx;
+	u_char ch;
+	myarg_t *m = arg;
+
+	idx  = m->index;
+	widx = idx + 1;
+	if (timers)
+		uev_timer_set(&evto[idx], 10000 + drand48() * 1000, 0);
+
+	count += read(w->fd, &ch, sizeof(ch));
+	if (writes) {
+		if (widx >= num_pipes)
+			widx -= num_pipes;
+
+		if (write(pipes[2 * widx + 1], "e", 1) < 0) {
+			perror("write()");
+			abort();
+		}
+
+		writes--;
+		fired++;
+	}
+}
+
+static void timer_cb(uev_t UNUSED(*w), void UNUSED(*arg), int UNUSED(events))
+{
+	/* nop */
+}
+
+static struct timeval *run_once(uev_ctx_t *ctx)
+{
+	int *cp, i, space;
+	static struct timeval ta, ts, te;
+
+	gettimeofday(&ta, NULL);
+	for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) {
+		uev_io_set(&evio[i], cp[0], UEV_READ);
+
+		if (timers)
+			uev_timer_set(&evto[i], 10000 + drand48() * 1000, 0);
+	}
+
+	uev_run(ctx, UEV_ONCE | UEV_NONBLOCK);
+
+	fired = 0;
+	space = num_pipes / num_active;
+	space = space * 2;
+	for (i = 0; i < num_active; i++, fired++) {
+		if (write(pipes[i * space + 1], "e", 1) < 0) {
+			perror("write()");
+			abort();
+		}
+	}
+
+	count = 0;
+	writes = num_writes;
+	{
+		int xcount = 0;
+
+		gettimeofday(&ts, NULL);
+
+		do {
+			uev_run(ctx, UEV_ONCE | UEV_NONBLOCK);
+			xcount++;
+		} while (count != fired);
+
+		gettimeofday(&te, NULL);
+
+		if (xcount != count)
+			fprintf(stderr, "Xcount: %d, Rcount: %d\n", xcount, count);
+	}
+
+	timersub(&te, &ta, &ta);
+	timersub(&te, &ts, &ts);
+	fprintf(stdout, "%8ld %8ld\n",
+		ta.tv_sec * 1000000L + ta.tv_usec,
+		ts.tv_sec * 1000000L + ts.tv_usec);
+
+	return &te;
+}
+
+int main(int argc, char **argv)
+{
+	struct rlimit rl;
+	int i, c;
+	int *cp;
+	uev_ctx_t ctx;
+	extern char *optarg;
+
+	num_pipes = 100;
+	num_active = 1;
+	num_writes = num_pipes;
+	while ((c = getopt(argc, argv, "a:n:tw:")) != -1) {
+		switch (c) {
+		case 'a':
+			num_active = atoi(optarg);
+			break;
+
+		case 'n':
+			num_pipes = atoi(optarg);
+			break;
+
+		case 't':
+			timers = 1;
+			break;
+
+		case 'w':
+			num_writes = atoi(optarg);
+			break;
+
+		default:
+			fprintf(stderr, "Illegal argument \"%c\"\n", c);
+			return 1;
+		}
+	}
+
+	rl.rlim_cur = rl.rlim_max = num_pipes * 3 + 50;
+	if (setrlimit(RLIMIT_NOFILE, &rl) == -1) {
+		perror("setrlimit");
+		return 1;
+	}
+
+	args   = calloc(num_pipes, sizeof(myarg_t));
+	evio   = calloc(num_pipes, sizeof(uev_t));
+	evto   = calloc(num_pipes, sizeof(uev_t));
+	pipes  = calloc(num_pipes * 2, sizeof(int));
+	if (!args || !evio || !evto || !pipes) {
+		perror("calloc");
+		return 1;
+	}
+
+	uev_init(&ctx);
+
+	for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) {
+		if (timers)
+			uev_timer_init(&ctx, &evto[i], timer_cb, NULL, 0, 0);
+		args[i].index = i;
+
+#ifdef USE_PIPES
+		if (pipe2(cp, O_NONBLOCK) == -1) {
+#else
+		if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0, cp) == -1) {
+#endif
+			perror("pipe");
+			exit(1);
+		}
+
+		uev_io_init(&ctx, &evio[i], read_cb, &args[i], cp[0], UEV_READ);
+	}
+
+	for (i = 0; i < 2; i++)
+		run_once(&ctx);
+
+	return 0;
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */