868317b3fd
Some platforms (eg: Trusty) are extremelly memory constrained, which doesn't necessarily work well with some of Scudo's current assumptions. `Vector` by default (and as such `String` and `ScopedString`) maps a page, which is a bit of a waste. This CL changes `Vector` to use a buffer local to the class first, then potentially map more memory if needed (`ScopedString` currently are all stack based so it would be stack data). We also want to allow a platform to prevent any dynamic resizing, so I added a `CanGrow` templated parameter that for now is always `true` but would be set to `false` on Trusty. Differential Revision: https://reviews.llvm.org/D103641
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
//===-- vector_test.cpp -----------------------------------------*- C++ -*-===//
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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 "tests/scudo_unit_test.h"
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#include "vector.h"
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TEST(ScudoVectorTest, Basic) {
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scudo::Vector<int> V;
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EXPECT_EQ(V.size(), 0U);
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V.push_back(42);
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EXPECT_EQ(V.size(), 1U);
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EXPECT_EQ(V[0], 42);
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V.push_back(43);
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EXPECT_EQ(V.size(), 2U);
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EXPECT_EQ(V[0], 42);
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EXPECT_EQ(V[1], 43);
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}
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TEST(ScudoVectorTest, Stride) {
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scudo::Vector<scudo::uptr> V;
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for (scudo::uptr I = 0; I < 1000; I++) {
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V.push_back(I);
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EXPECT_EQ(V.size(), I + 1U);
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EXPECT_EQ(V[I], I);
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}
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for (scudo::uptr I = 0; I < 1000; I++)
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EXPECT_EQ(V[I], I);
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}
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TEST(ScudoVectorTest, ResizeReduction) {
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scudo::Vector<int> V;
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V.push_back(0);
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V.push_back(0);
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EXPECT_EQ(V.size(), 2U);
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V.resize(1);
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EXPECT_EQ(V.size(), 1U);
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}
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