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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/base/platform/platform.h"
#if V8_OS_POSIX
#include <setjmp.h>
#include <signal.h>
#include <unistd.h> // NOLINT
#endif
#if V8_OS_WIN
#include "src/base/win32-headers.h"
#endif
#include "testing/gtest/include/gtest/gtest.h"
#if V8_OS_ANDROID
#define DISABLE_ON_ANDROID(Name) DISABLED_##Name
#else
#define DISABLE_ON_ANDROID(Name) Name
#endif
namespace v8 {
namespace base {
TEST(OS, GetCurrentProcessId) {
#if V8_OS_POSIX
EXPECT_EQ(static_cast<int>(getpid()), OS::GetCurrentProcessId());
#endif
#if V8_OS_WIN
EXPECT_EQ(static_cast<int>(::GetCurrentProcessId()),
OS::GetCurrentProcessId());
#endif
}
namespace {
class ThreadLocalStorageTest : public Thread, public ::testing::Test {
public:
ThreadLocalStorageTest() : Thread(Options("ThreadLocalStorageTest")) {
for (size_t i = 0; i < arraysize(keys_); ++i) {
keys_[i] = Thread::CreateThreadLocalKey();
}
}
~ThreadLocalStorageTest() {
for (size_t i = 0; i < arraysize(keys_); ++i) {
Thread::DeleteThreadLocalKey(keys_[i]);
}
}
void Run() final {
for (size_t i = 0; i < arraysize(keys_); i++) {
CHECK(!Thread::HasThreadLocal(keys_[i]));
}
for (size_t i = 0; i < arraysize(keys_); i++) {
Thread::SetThreadLocal(keys_[i], GetValue(i));
}
for (size_t i = 0; i < arraysize(keys_); i++) {
CHECK(Thread::HasThreadLocal(keys_[i]));
}
for (size_t i = 0; i < arraysize(keys_); i++) {
CHECK_EQ(GetValue(i), Thread::GetThreadLocal(keys_[i]));
CHECK_EQ(GetValue(i), Thread::GetExistingThreadLocal(keys_[i]));
}
for (size_t i = 0; i < arraysize(keys_); i++) {
Thread::SetThreadLocal(keys_[i], GetValue(arraysize(keys_) - i - 1));
}
for (size_t i = 0; i < arraysize(keys_); i++) {
CHECK(Thread::HasThreadLocal(keys_[i]));
}
for (size_t i = 0; i < arraysize(keys_); i++) {
CHECK_EQ(GetValue(arraysize(keys_) - i - 1),
Thread::GetThreadLocal(keys_[i]));
CHECK_EQ(GetValue(arraysize(keys_) - i - 1),
Thread::GetExistingThreadLocal(keys_[i]));
}
}
private:
static void* GetValue(size_t x) {
return bit_cast<void*>(static_cast<uintptr_t>(x + 1));
}
// Older versions of Android have fewer TLS slots (nominally 64, but the
// system uses "about 5 of them" itself).
Thread::LocalStorageKey keys_[32];
};
} // namespace
TEST_F(ThreadLocalStorageTest, DoTest) {
Run();
Start();
Join();
}
#if V8_OS_POSIX
// TODO(eholk): Add a windows version of these tests
namespace {
// These tests make sure the routines to allocate memory do so with the correct
// permissions.
//
// Unfortunately, there is no API to find the protection of a memory address,
// so instead we test permissions by installing a signal handler, probing a
// memory location and recovering from the fault.
//
// We don't test the execution permission because to do so we'd have to
// dynamically generate code and test if we can execute it.
class MemoryAllocationPermissionsTest : public ::testing::Test {
static void SignalHandler(int signal, siginfo_t* info, void*) {
siglongjmp(continuation_, 1);
}
struct sigaction old_action_;
// On Mac, sometimes we get SIGBUS instead of SIGSEGV.
#if V8_OS_MACOSX
struct sigaction old_bus_action_;
#endif
protected:
virtual void SetUp() {
struct sigaction action;
action.sa_sigaction = SignalHandler;
sigemptyset(&action.sa_mask);
action.sa_flags = SA_SIGINFO;
sigaction(SIGSEGV, &action, &old_action_);
#if V8_OS_MACOSX
sigaction(SIGBUS, &action, &old_bus_action_);
#endif
}
virtual void TearDown() {
// be a good citizen and restore the old signal handler.
sigaction(SIGSEGV, &old_action_, nullptr);
#if V8_OS_MACOSX
sigaction(SIGBUS, &old_bus_action_, nullptr);
#endif
}
public:
static sigjmp_buf continuation_;
enum class MemoryAction { kRead, kWrite };
void ProbeMemory(volatile int* buffer, MemoryAction action,
bool should_succeed) {
const int save_sigs = 1;
if (!sigsetjmp(continuation_, save_sigs)) {
switch (action) {
case MemoryAction::kRead: {
// static_cast to remove the reference and force a memory read.
USE(static_cast<int>(*buffer));
break;
}
case MemoryAction::kWrite: {
*buffer = 0;
break;
}
}
if (should_succeed) {
SUCCEED();
} else {
FAIL();
}
return;
}
if (should_succeed) {
FAIL();
} else {
SUCCEED();
}
}
void TestPermissions(OS::MemoryPermission permission, bool can_read,
bool can_write) {
const size_t page_size = OS::AllocatePageSize();
int* buffer = static_cast<int*>(
OS::Allocate(nullptr, page_size, page_size, permission));
ProbeMemory(buffer, MemoryAction::kRead, can_read);
ProbeMemory(buffer, MemoryAction::kWrite, can_write);
CHECK(OS::Free(buffer, page_size));
}
};
sigjmp_buf MemoryAllocationPermissionsTest::continuation_;
TEST_F(MemoryAllocationPermissionsTest, DoTest) {
TestPermissions(OS::MemoryPermission::kNoAccess, false, false);
TestPermissions(OS::MemoryPermission::kReadWrite, true, true);
TestPermissions(OS::MemoryPermission::kReadWriteExecute, true, true);
}
} // namespace
#endif // V8_OS_POSIX
} // namespace base
} // namespace v8
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