Add simple stest smalloc tester
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/t/stest.c b/t/stest.c
new file mode 100644
index 0000000..c179484
--- /dev/null
+++ b/t/stest.c
@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "../smalloc.h"
+#include "../flist.h"
+
+FILE *f_err;
+
+#define MAGIC1 0xa9b1c8d2
+#define MAGIC2 0xf0a1e9b3
+
+#define LOOPS 32
+
+struct elem {
+ unsigned int magic1;
+ struct flist_head list;
+ unsigned int magic2;
+};
+
+FLIST_HEAD(list);
+
+static int do_rand_allocs(void)
+{
+ unsigned int size, nr, rounds = 0;
+ unsigned long total;
+ struct elem *e;
+
+ while (rounds++ < LOOPS) {
+#ifdef STEST_SEED
+ srand(MAGIC1);
+#endif
+ nr = total = 0;
+ while (total < 128*1024*1024UL) {
+ size = 8 * sizeof(struct elem) + (int) (999.0 * (rand() / (RAND_MAX + 1.0)));
+ e = smalloc(size);
+ if (!e) {
+ printf("fail at %lu, size %u\n", total, size);
+ break;
+ }
+ e->magic1 = MAGIC1;
+ e->magic2 = MAGIC2;
+ total += size;
+ flist_add_tail(&e->list, &list);
+ nr++;
+ }
+
+ printf("Got items: %u\n", nr);
+
+ while (!flist_empty(&list)) {
+ e = flist_entry(list.next, struct elem, list);
+ assert(e->magic1 == MAGIC1);
+ assert(e->magic2 == MAGIC2);
+ flist_del(&e->list);
+ sfree(e);
+ }
+ }
+
+ return 0;
+}
+
+static int do_specific_alloc(unsigned long size)
+{
+ void *ptr;
+
+ ptr = smalloc(size);
+ sfree(ptr);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ f_err = stderr;
+
+ sinit();
+
+ do_rand_allocs();
+
+ /* smalloc bug, commit 271067a6 */
+ do_specific_alloc(671386584);
+
+ scleanup();
+ return 0;
+}