Add tsd test.

Submitted by Mike Hommey.

test/unit/tsd.c

@@ -0,0 +1,54 @@
+#include "test/jemalloc_test.h"
+
+#define THREAD_DATA 0x72b65c10
+
+typedef unsigned int data_t;
+
+void
+data_cleanup(void *arg)
+{
+	data_t *data = (data_t *)arg;
+
+	malloc_printf("Cleanup for data %x.\n", *data);
+}
+
+malloc_tsd_protos(, data, data_t)
+malloc_tsd_externs(data, data_t)
+#define DATA_INIT 0x12345678
+malloc_tsd_data(, data, data_t, DATA_INIT)
+malloc_tsd_funcs(, data, data_t, DATA_INIT, data_cleanup)
+
+void *
+je_thread_start(void *arg)
+{
+	data_t d = (data_t)(uintptr_t) arg;
+	malloc_printf("Initial tsd_get returns %x. Expected %x.\n",
+		*data_tsd_get(), DATA_INIT);
+
+	data_tsd_set(&d);
+	malloc_printf("After tsd_set: %x. Expected %x.\n",
+		*data_tsd_get(), d);
+
+	d = 0;
+	malloc_printf("After resetting local data: %x. Expected %x.\n",
+		*data_tsd_get(), (data_t)(uintptr_t) arg);
+
+	return NULL;
+}
+
+int
+main(void)
+{
+	je_thread_t thread;
+
+	malloc_printf("Test begin\n");
+
+	data_tsd_boot();
+	je_thread_start((void *) 0xa5f3e329);
+
+	je_thread_create(&thread, je_thread_start, (void *) THREAD_DATA);
+	je_thread_join(thread, NULL);
+
+	malloc_printf("Test end\n");
+	return (0);
+}

test/unit/tsd.exp

@@ -0,0 +1,9 @@
+Test begin
+Initial tsd_get returns 12345678. Expected 12345678.
+After tsd_set: a5f3e329. Expected a5f3e329.
+After resetting local data: a5f3e329. Expected a5f3e329.
+Initial tsd_get returns 12345678. Expected 12345678.
+After tsd_set: 72b65c10. Expected 72b65c10.
+After resetting local data: 72b65c10. Expected 72b65c10.
+Cleanup for data 72b65c10.
+Test end