[libc-commits] [libc] [libc] Implement getrusage and corresponding unit tests. (PR #217684)

[Vadim Kotov via libc-commits]

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@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Unittests for getrusage.
+///
+//===----------------------------------------------------------------------===//
+
+#include "hdr/sys_resource_macros.h"
+#include "hdr/types/struct_rusage.h"
+#include "src/sys/resource/getrusage.h"
+#include "test/UnitTest/ErrnoCheckingTest.h"
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibcGetrusageTest, BasicTest) {
+  struct rusage usage = {};
+  int res = LIBC_NAMESPACE::getrusage(RUSAGE_SELF, &usage);
+  EXPECT_EQ(res, 0);
+  ASSERT_ERRNO_SUCCESS();
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vadimkotov wrote:

The only parameter that should have some stably identifiable value is `ru_minflt` (the program will have allocated some memory and it will have triggered page faults by the time the call is made), so I added that. (31a72fdb56a11eaaf4d508561328364875eadfb2)

https://github.com/llvm/llvm-project/pull/217684