forked from OSchip/llvm-project
103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
//===- unittest/Support/ProcessTest.cpp -----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/Triple.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/Process.h"
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#include "gtest/gtest.h"
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#ifdef _WIN32
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#include <windows.h>
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#endif
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namespace {
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using namespace llvm;
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using namespace sys;
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TEST(ProcessTest, GetRandomNumberTest) {
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const unsigned r1 = Process::GetRandomNumber();
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const unsigned r2 = Process::GetRandomNumber();
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// It should be extremely unlikely that both r1 and r2 are 0.
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EXPECT_NE((r1 | r2), 0u);
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}
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#ifdef _MSC_VER
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#define setenv(name, var, ignore) _putenv_s(name, var)
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#endif
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#if HAVE_SETENV || _MSC_VER
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TEST(ProcessTest, Basic) {
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setenv("__LLVM_TEST_ENVIRON_VAR__", "abc", true);
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Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
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EXPECT_TRUE(val.hasValue());
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EXPECT_STREQ("abc", val->c_str());
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}
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TEST(ProcessTest, None) {
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Optional<std::string> val(
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Process::GetEnv("__LLVM_TEST_ENVIRON_NO_SUCH_VAR__"));
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EXPECT_FALSE(val.hasValue());
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}
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#endif
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#ifdef _WIN32
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TEST(ProcessTest, EmptyVal) {
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SetEnvironmentVariableA("__LLVM_TEST_ENVIRON_VAR__", "");
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Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
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EXPECT_TRUE(val.hasValue());
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EXPECT_STREQ("", val->c_str());
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}
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TEST(ProcessTest, Wchar) {
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SetEnvironmentVariableW(L"__LLVM_TEST_ENVIRON_VAR__", L"abcdefghijklmnopqrs");
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Optional<std::string> val(Process::GetEnv("__LLVM_TEST_ENVIRON_VAR__"));
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EXPECT_TRUE(val.hasValue());
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EXPECT_STREQ("abcdefghijklmnopqrs", val->c_str());
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}
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#endif
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class PageSizeTest : public testing::Test {
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Triple Host;
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protected:
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PageSizeTest() : Host(Triple::normalize(sys::getProcessTriple())) {}
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bool isSupported() const {
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// For now just on X86-64 and Aarch64. This can be expanded in the future.
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return (Host.getArch() == Triple::x86_64 ||
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Host.getArch() == Triple::aarch64) &&
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Host.getOS() == Triple::Linux;
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}
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bool pageSizeAsExpected(unsigned PageSize) const {
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switch (Host.getArch()) {
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case Triple::x86_64:
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return PageSize == 4096;
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case Triple::aarch64:
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// supported granule sizes are 4k, 16k and 64k
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return PageSize == 4096 || PageSize == 16384 || PageSize == 65536;
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default:
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llvm_unreachable("unexpected arch!");
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}
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}
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};
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TEST_F(PageSizeTest, PageSize) {
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if (!isSupported())
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return;
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llvm::Expected<unsigned> Result = llvm::sys::Process::getPageSize();
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ASSERT_FALSE(!Result);
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ASSERT_TRUE(pageSizeAsExpected(*Result));
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}
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} // end anonymous namespace
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