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authorSander Vrijders <sander.vrijders@ugent.be>2017-08-17 16:56:00 +0200
committerSander Vrijders <sander.vrijders@ugent.be>2017-08-17 18:02:30 +0200
commit4d9c4025222e19dac9a90cabe8bd886e47959ad6 (patch)
tree3959a7206bfa3b5de2881d4404a2746a75aaefda /src/lib/tests/timerwheel_test.c
parentc7cb10810c447579cb20a8bc99049baeeb8e2065 (diff)
downloadouroboros-4d9c4025222e19dac9a90cabe8bd886e47959ad6.tar.gz
ouroboros-4d9c4025222e19dac9a90cabe8bd886e47959ad6.zip
lib: Add basic FRCT mechanisms
This adds the basic FRCT mechanisms to the library. Upon flow alloc or accept an FRCT instance is now created and used when reading or writing to the flow. The timerwheel has been refactored to allow recharging timers and removing them and is now part of the library. The first SDU sent over the connection has the DRF set and this initializes the connection. Sender and receiver inactivity timers are added.
Diffstat (limited to 'src/lib/tests/timerwheel_test.c')
-rw-r--r--src/lib/tests/timerwheel_test.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/lib/tests/timerwheel_test.c b/src/lib/tests/timerwheel_test.c
new file mode 100644
index 00000000..d9ca164e
--- /dev/null
+++ b/src/lib/tests/timerwheel_test.c
@@ -0,0 +1,106 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Test of the timer wheel
+ *
+ * Dimitri Staessens <dimitri.staessens@ugent.be>
+ * Sander Vrijders <sander.vrijders@ugent.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#include "timerwheel.c"
+
+#include <pthread.h>
+#include <time.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define MAX_ELEMENTS 100
+#define MAX_RESOLUTION 10 /* ms */
+#define MAX_ADDITIONS 1000
+
+int total;
+
+int add(void * o)
+{
+ total += *((int *) o);
+ return 0;
+}
+
+int timerwheel_test(int argc, char ** argv)
+{
+ struct timerwheel * tw;
+ long resolution;
+ long elements;
+ struct timespec wait;
+
+ int additions;
+
+ int check_total = 0;
+
+ int i;
+ int var = 5;
+
+ struct tw_f * f;
+
+ (void) argc;
+ (void) argv;
+
+ total = 0;
+
+ srand(time(NULL));
+
+ resolution = rand() % (MAX_RESOLUTION - 1) + 1;
+ elements = rand() % (MAX_ELEMENTS - 10) + 10;
+
+ tw = timerwheel_create(resolution, resolution * elements);
+ if (tw == NULL) {
+ printf("Failed to create timerwheel.\n");
+ return -1;
+ }
+
+ wait.tv_sec = (resolution * elements) / 1000;
+ wait.tv_nsec = ((resolution * elements) % 1000) * MILLION;
+
+ additions = rand() % MAX_ADDITIONS + 1000;
+
+ for (i = 0; i < additions; ++i) {
+ int delay = rand() % (resolution * elements);
+ check_total += var;
+ f = timerwheel_start(tw,
+ (void (*)(void *)) add,
+ (void *) &var,
+ delay);
+ if (f == NULL) {
+ printf("Failed to add function.");
+ return -1;
+ }
+ }
+
+ nanosleep(&wait, NULL);
+
+ /* On some systems and VMs, the scheduler may be too slow. */
+ if (total != check_total)
+ nanosleep(&wait, NULL);
+
+ timerwheel_destroy(tw);
+
+ if (total != check_total) {
+ printf("Totals do not match.\n");
+ return -1;
+ }
+
+ return 0;
+}