sandboxed-api/sandboxed_api/sandbox2/testcases/malloc.cc
Christian Blichmann d451478e26 Change license link to HTTPS URL
PiperOrigin-RevId: 424811734
Change-Id: If5ea692edc56ddc9c99fd478673df41c0246e9cc
2022-01-28 01:39:09 -08:00

71 lines
1.6 KiB
C++

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