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71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
// Copyright 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// A binary doing various malloc calls to check that the malloc policy works as
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// expected.
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#include <cstdlib>
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#include <vector>
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void test() {
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std::vector<void*> ptrs;
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for (size_t n = 1; n <= 0x1000000; n *= 2) {
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void* buf = malloc(n);
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if (buf == nullptr) {
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exit(EXIT_FAILURE);
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}
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ptrs.push_back(buf);
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}
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for (size_t n = 1; n <= 0x1000000; n *= 2) {
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void* buf = calloc(5, n);
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if (buf == nullptr) {
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exit(EXIT_FAILURE);
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}
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ptrs.push_back(buf);
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}
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for (int n = 0; n < ptrs.size(); n++) {
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void* buf = realloc(ptrs[n], 100);
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if (buf == nullptr) {
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exit(EXIT_FAILURE);
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}
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ptrs[n] = buf;
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}
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for (auto ptr : ptrs) {
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free(ptr);
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}
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ptrs.clear();
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// Apply a bit of memory pressure, to trigger alternate allocator behaviors.
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for (size_t n = 0; n < 0x200; n++) {
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void* buf = malloc(0x400);
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if (buf == nullptr) {
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exit(EXIT_FAILURE);
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}
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ptrs.push_back(buf);
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}
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for (auto ptr : ptrs) {
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free(ptr);
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}
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}
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int main() {
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test();
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return EXIT_SUCCESS;
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}
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