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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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
*
* http://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.
*/
#include <sys/time.h>
#include <chrono>
#include <functional>
#include <ScopedDisableMalloc.h>
#include <gtest/gtest.h>
using namespace std::chrono_literals;
namespace android {
class DisableMallocTest : public ::testing::Test {
protected:
void alarm(std::chrono::microseconds us) {
std::chrono::seconds s = std::chrono::duration_cast<std::chrono::seconds>(us);
itimerval t = itimerval();
t.it_value.tv_sec = s.count();
t.it_value.tv_usec = (us - s).count();
setitimer(ITIMER_REAL, &t, NULL);
}
};
TEST_F(DisableMallocTest, reenable) {
ASSERT_EXIT(
{
alarm(100ms);
void* ptr1 = malloc(128);
ASSERT_NE(ptr1, nullptr);
free(ptr1);
{ ScopedDisableMalloc disable_malloc; }
void* ptr2 = malloc(128);
ASSERT_NE(ptr2, nullptr);
free(ptr2);
_exit(1);
},
::testing::ExitedWithCode(1), "");
}
TEST_F(DisableMallocTest, deadlock_allocate) {
ASSERT_DEATH(
{
void* ptr = malloc(128);
ASSERT_NE(ptr, nullptr);
free(ptr);
{
alarm(100ms);
ScopedDisableMalloc disable_malloc;
void* ptr = malloc(128);
ASSERT_NE(ptr, nullptr);
free(ptr);
}
},
"");
}
TEST_F(DisableMallocTest, deadlock_new) {
ASSERT_DEATH(
{
// C++ allows `new Foo` to be replaced with a stack allocation or merged
// with future `new Foo` expressions, provided certain conditions are
// met [expr.new/10]. None of this applies to `operator new(size_t)`.
void* ptr = ::operator new(1);
ASSERT_NE(ptr, nullptr);
::operator delete(ptr);
{
alarm(100ms);
ScopedDisableMalloc disable_malloc;
void* ptr = ::operator new(1);
ASSERT_NE(ptr, nullptr);
::operator delete(ptr);
}
},
"");
}
TEST_F(DisableMallocTest, deadlock_delete) {
ASSERT_DEATH(
{
void* ptr = ::operator new(1);
ASSERT_NE(ptr, nullptr);
{
alarm(250ms);
ScopedDisableMalloc disable_malloc;
::operator delete(ptr);
}
},
"");
}
TEST_F(DisableMallocTest, deadlock_free) {
ASSERT_DEATH(
{
void* ptr = malloc(128);
ASSERT_NE(ptr, nullptr);
{
alarm(100ms);
ScopedDisableMalloc disable_malloc;
free(ptr);
}
},
"");
}
TEST_F(DisableMallocTest, deadlock_fork) {
ASSERT_DEATH({
{
alarm(100ms);
ScopedDisableMalloc disable_malloc;
fork();
}
}, "");
}
} // namespace android
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