summaryrefslogtreecommitdiffstats
path: root/tests/contrib/test_spinlock.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:24:08 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:24:08 +0000
commitf449f278dd3c70e479a035f50a9bb817a9b433ba (patch)
tree8ca2bfb785dda9bb4d573acdf9b42aea9cd51383 /tests/contrib/test_spinlock.c
parentInitial commit. (diff)
downloadknot-f449f278dd3c70e479a035f50a9bb817a9b433ba.tar.xz
knot-f449f278dd3c70e479a035f50a9bb817a9b433ba.zip
Adding upstream version 3.2.6.upstream/3.2.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/contrib/test_spinlock.c')
-rw-r--r--tests/contrib/test_spinlock.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/tests/contrib/test_spinlock.c b/tests/contrib/test_spinlock.c
new file mode 100644
index 0000000..0d5122b
--- /dev/null
+++ b/tests/contrib/test_spinlock.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 2021 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <signal.h>
+#include <tap/basic.h>
+
+#include "knot/server/dthreads.h"
+#include "contrib/spinlock.h"
+
+#define THREADS 8
+#define CYCLES 100000
+
+static volatile int counter = 0;
+static volatile int tens_counter = 0;
+static knot_spin_t spinlock;
+
+static int thread(struct dthread *thread)
+{
+ volatile int i, j, k;
+
+ for (i = 0; i < CYCLES; i++) {
+ knot_spin_lock(&spinlock);
+ j = counter;
+ k = tens_counter;
+ if (++j % 10 == 0) {
+ k++;
+ }
+ tens_counter = k;
+ counter = j;
+ knot_spin_unlock(&spinlock);
+ }
+
+ return 0;
+}
+
+// Signal handler
+static void interrupt_handle(int s)
+{
+}
+
+int main(int argc, char *argv[])
+{
+ plan_lazy();
+
+ // Register service and signal handler
+ struct sigaction sa;
+ sa.sa_handler = interrupt_handle;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ sigaction(SIGALRM, &sa, NULL); // Interrupt
+
+ knot_spin_init(&spinlock);
+
+ dt_unit_t *unit = dt_create(THREADS, thread, NULL, NULL);
+ dt_start(unit);
+ dt_join(unit);
+ dt_delete(&unit);
+
+ knot_spin_destroy(&spinlock);
+
+ is_int(THREADS * CYCLES, counter, "spinlock: protected counter one");
+ is_int(THREADS * CYCLES / 10, tens_counter, "spinlock: protected counter two");
+
+ return 0;
+}