1 files changed, 106 insertions, 0 deletions
diff --git a/tests/lib/test_memory.c b/tests/lib/test_memory.c
new file mode 100644
index 0000000..aba4c35
--- /dev/null
+++ b/tests/lib/test_memory.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ */
+
+#include <zebra.h>
+#include <memory.h>
+
+DEFINE_MGROUP(TEST_MEMORY, "memory test");
+DEFINE_MTYPE_STATIC(TEST_MEMORY, TEST, "generic test mtype");
+
+/* Memory torture tests
+ *
+ * Tests below are generic but comments are focused on interaction with
+ * Paul's proposed memory 'quick' cache, which may never be included in
+ * CVS
+ */
+
+struct event_loop *master;
+
+#if 0 /* set to 1 to use system alloc directly */
+#undef XMALLOC
+#undef XCALLOC
+#undef XREALLOC
+#undef XFREE
+#define XMALLOC(T,S) malloc((S))
+#define XCALLOC(T,S) calloc(1, (S))
+#define XREALLOC(T,P,S) realloc((P),(S))
+#define XFREE(T,P) free((P))
+#endif
+
+#define TIMES 10
+
+int main(int argc, char **argv)
+{
+	void *a[10];
+	int i;
+
+	printf("malloc x, malloc x, free, malloc x, free free\n\n");
+	/* simple case, test cache */
+	for (i = 0; i < TIMES; i++) {
+		a[0] = XMALLOC(MTYPE_TEST, 1024);
+		memset(a[0], 1, 1024);
+		a[1] = XMALLOC(MTYPE_TEST, 1024);
+		memset(a[1], 1, 1024);
+		XFREE(MTYPE_TEST, a[0]); /* should go to cache */
+		a[0] = XMALLOC(MTYPE_TEST,
+			       1024); /* should be satisfied from cache */
+		XFREE(MTYPE_TEST, a[0]);
+		XFREE(MTYPE_TEST, a[1]);
+	}
+
+	printf("malloc x, malloc y, free x, malloc y, free free\n\n");
+	/* cache should go invalid, valid, invalid, etc.. */
+	for (i = 0; i < TIMES; i++) {
+		a[0] = XMALLOC(MTYPE_TEST, 512);
+		memset(a[0], 1, 512);
+		a[1] = XMALLOC(MTYPE_TEST, 1024); /* invalidate cache */
+		memset(a[1], 1, 1024);
+		XFREE(MTYPE_TEST, a[0]);
+		a[0] = XMALLOC(MTYPE_TEST, 1024);
+		XFREE(MTYPE_TEST, a[0]);
+		XFREE(MTYPE_TEST, a[1]);
+		/* cache should become valid again on next request */
+	}
+
+	printf("calloc\n\n");
+	/* test calloc */
+	for (i = 0; i < TIMES; i++) {
+		a[0] = XCALLOC(MTYPE_TEST, 1024);
+		memset(a[0], 1, 1024);
+		a[1] = XCALLOC(MTYPE_TEST, 512); /* invalidate cache */
+		memset(a[1], 1, 512);
+		XFREE(MTYPE_TEST, a[1]);
+		XFREE(MTYPE_TEST, a[0]);
+		/* alloc == 0, cache can become valid again on next request */
+	}
+
+	printf("calloc and realloc\n\n");
+	/* check calloc + realloc */
+	for (i = 0; i < TIMES; i++) {
+		printf("calloc a0 1024\n");
+		a[0] = XCALLOC(MTYPE_TEST, 1024);
+		memset(a[0], 1, 1024 / 2);
+
+		printf("calloc 1 1024\n");
+		a[1] = XCALLOC(MTYPE_TEST, 1024);
+		memset(a[1], 1, 1024 / 2);
+
+		printf("realloc 0 1024\n");
+		a[3] = XREALLOC(MTYPE_TEST, a[0], 2048); /* invalidate cache */
+		if (a[3] != NULL)
+			a[0] = a[3];
+		memset(a[0], 1, 1024);
+
+		printf("calloc 2 512\n");
+		a[2] = XCALLOC(MTYPE_TEST, 512);
+		memset(a[2], 1, 512);
+
+		printf("free 1 0 2\n");
+		XFREE(MTYPE_TEST, a[1]);
+		XFREE(MTYPE_TEST, a[0]);
+		XFREE(MTYPE_TEST, a[2]);
+		/* alloc == 0, cache valid next request */
+	}
+	return 0;
+}