jemalloc: Import 5.3.0 54eaed1d8b56b1aa528be3bdd1877e59c56fa90cvendor/jemalloc/5.3.0vendor/jemalloc

Import jemalloc 5.3.0.

This import changes how manage the jemalloc vendor branch (which was
just started anyway). Starting with 5.3.0, we import a clean tree from
the upstream github, removing all the old files that are no longer
upstream, or that we've kept around for some reason. We do this because
we merge from this raw version of jemalloc into the FreeBSD
contrib/jemalloc, then we run autogen stuff, generate all the generated
.h files with gmake, then finally remove much of the generated files in
contrib/jemalloc using an update script.

Sponsored by:		Netflix

1 files changed, 48 insertions, 0 deletions

diff --git a/test/unit/zero_realloc_alloc.c b/test/unit/zero_realloc_alloc.c
new file mode 100644
index 000000000000..65e07bdbe0ae
--- /dev/null
+++ b/test/unit/zero_realloc_alloc.c
@@ -0,0 +1,48 @@
+#include "test/jemalloc_test.h"
+
+static uint64_t
+allocated() {
+	if (!config_stats) {
+		return 0;
+	}
+	uint64_t allocated;
+	size_t sz = sizeof(allocated);
+	expect_d_eq(mallctl("thread.allocated", (void *)&allocated, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+	return allocated;
+}
+
+static uint64_t
+deallocated() {
+	if (!config_stats) {
+		return 0;
+	}
+	uint64_t deallocated;
+	size_t sz = sizeof(deallocated);
+	expect_d_eq(mallctl("thread.deallocated", (void *)&deallocated, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+	return deallocated;
+}
+
+TEST_BEGIN(test_realloc_alloc) {
+	void *ptr = mallocx(1, 0);
+	expect_ptr_not_null(ptr, "Unexpected mallocx error");
+	uint64_t allocated_before = allocated();
+	uint64_t deallocated_before = deallocated();
+	ptr = realloc(ptr, 0);
+	uint64_t allocated_after = allocated();
+	uint64_t deallocated_after = deallocated();
+	if (config_stats) {
+		expect_u64_lt(allocated_before, allocated_after,
+		    "Unexpected stats change");
+		expect_u64_lt(deallocated_before, deallocated_after,
+		    "Unexpected stats change");
+	}
+	dallocx(ptr, 0);
+}
+TEST_END
+int
+main(void) {
+	return test(
+	    test_realloc_alloc);
+}