f7fdc8d0cf
On our buildbot https://lab.llvm.org/buildbot/#/builders/122/builds/1478, one of the new tests added by https://github.com/llvm/llvm-project/pull/136046 failed. This is because on non-Apple Silicon platforms, the implementation is to start a new thread, but when threading is disabled this is the same as calling a function normally.
41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
//===- unittest/Support/ProgramStackTest.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/Support/ProgramStack.h"
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#include "llvm/Support/Process.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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// One way of running on a new stack is to start a new thread. When threading
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// is disabled a "new thread" is implemented as simply calling the function.
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#if LLVM_ENABLE_THREADS
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static uintptr_t func(int &A) {
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A = 7;
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return getStackPointer();
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}
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static void func2(int &A) {
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A = 5;
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}
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TEST(ProgramStackTest, runOnNewStack) {
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int A = 0;
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uintptr_t Stack = runOnNewStack(0, function_ref<uintptr_t(int &)>(func), A);
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EXPECT_EQ(A, 7);
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intptr_t StackDiff = (intptr_t)llvm::getStackPointer() - (intptr_t)Stack;
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size_t StackDistance = (size_t)std::abs(StackDiff);
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// Page size is used as it's large enough to guarantee were not on the same
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// stack but not too large to cause spurious failures.
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EXPECT_GT(StackDistance, llvm::sys::Process::getPageSizeEstimate());
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runOnNewStack(0, function_ref<void(int &)>(func2), A);
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EXPECT_EQ(A, 5);
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}
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#endif /*if LLVM_ENABLE_THREADS */ |