1 files changed, 70 insertions, 0 deletions
diff --git a/test/test_sem.c b/test/test_sem.c
new file mode 100644
index 0000000..33859f1
--- /dev/null
+++ b/test/test_sem.c
@@ -0,0 +1,70 @@
+// Copyright 2012-2021 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#undef NDEBUG
+
+#include "zix/attributes.h"
+#include "zix/sem.h"
+#include "zix/thread.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static ZixSem   sem;
+static unsigned n_signals = 1024;
+
+static void*
+reader(void* ZIX_UNUSED(arg))
+{
+  printf("Reader starting\n");
+
+  for (unsigned i = 0; i < n_signals; ++i) {
+    zix_sem_wait(&sem);
+  }
+
+  printf("Reader finished\n");
+  return NULL;
+}
+
+static void*
+writer(void* ZIX_UNUSED(arg))
+{
+  printf("Writer starting\n");
+
+  for (unsigned i = 0; i < n_signals; ++i) {
+    zix_sem_post(&sem);
+  }
+
+  printf("Writer finished\n");
+  return NULL;
+}
+
+int
+main(int argc, char** argv)
+{
+  if (argc > 2) {
+    printf("Usage: %s N_SIGNALS\n", argv[0]);
+    return 1;
+  }
+
+  if (argc > 1) {
+    n_signals = (unsigned)strtol(argv[1], NULL, 10);
+  }
+
+  printf("Testing %u signals...\n", n_signals);
+
+  assert(!zix_sem_init(&sem, 0));
+
+  ZixThread reader_thread; // NOLINT
+  assert(!zix_thread_create(&reader_thread, 128, reader, NULL));
+
+  ZixThread writer_thread; // NOLINT
+  assert(!zix_thread_create(&writer_thread, 128, writer, NULL));
+
+  zix_thread_join(reader_thread, NULL);
+  zix_thread_join(writer_thread, NULL);
+
+  zix_sem_destroy(&sem);
+  return 0;
+}