Index: runtime/vm/verified_memory_test.cc |
=================================================================== |
--- runtime/vm/verified_memory_test.cc (revision 0) |
+++ runtime/vm/verified_memory_test.cc (revision 0) |
@@ -0,0 +1,85 @@ |
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+ |
+#include "platform/assert.h" |
+#include "vm/unit_test.h" |
+#include "vm/verified_memory.h" |
+ |
+namespace dart { |
+ |
+void Init() { |
+#if defined(DEBUG) |
+ FLAG_verified_mem = true; |
+#endif |
+} |
+ |
+ |
+UNIT_TEST_CASE(VerifiedMemoryBasic) { |
+ Init(); |
+ const intptr_t kReservationSize = 64 * KB; |
+ VirtualMemory* vm = VerifiedMemory::Reserve(kReservationSize); |
+ EXPECT_EQ(kReservationSize, vm->size()); |
+ vm->Commit(false); |
+ double* addr = reinterpret_cast<double*>(vm->address()); |
+ VerifiedMemory::Write(&addr[0], 0.5); |
+ EXPECT_EQ(0.5, addr[0]); |
+ VerifiedMemory::Write(&addr[1], 1.5); |
+ VerifiedMemory::Write(&addr[2], 2.5); |
+ VerifiedMemory::Write(&addr[0], 0.25); |
+ static const double kNaN = NAN; |
+ VerifiedMemory::Write(&addr[0], kNaN); // Bitwise comparison should be used. |
+ VerifiedMemory::Write(&addr[0], 0.5); |
+ int64_t* unverified = reinterpret_cast<int64_t*>(&addr[3]); |
+ *unverified = 123; |
+ VerifiedMemory::Verify(reinterpret_cast<uword>(addr), 3 * sizeof(double)); |
+} |
+ |
+ |
+UNIT_TEST_CASE(VerifiedMemoryAccept) { |
+ Init(); |
+ const intptr_t kReservationSize = 64 * KB; |
+ VirtualMemory* vm = VerifiedMemory::Reserve(kReservationSize); |
+ EXPECT_EQ(kReservationSize, vm->size()); |
+ vm->Commit(false); |
+ double* addr = reinterpret_cast<double*>(vm->address()); |
+ VerifiedMemory::Write(&addr[0], 0.5); |
+ VerifiedMemory::Write(&addr[1], 1.5); |
+ VerifiedMemory::Write(&addr[2], 2.5); |
+ VerifiedMemory::Write(&addr[0], 0.25); |
+ // Unverified write followed by Accept ("I know what I'm doing"). |
+ memset(addr, 0xf3, 2 * sizeof(double)); |
+ VerifiedMemory::Accept(reinterpret_cast<uword>(addr), 2 * sizeof(double)); |
+ VerifiedMemory::Verify(reinterpret_cast<uword>(addr), 3 * sizeof(double)); |
+} |
+ |
+ |
+// Negative tests below. |
+ |
+UNIT_TEST_CASE(VerifyImplicit_Crash) { |
+ Init(); |
+ const intptr_t kReservationSize = 64 * KB; |
+ VirtualMemory* vm = VerifiedMemory::Reserve(kReservationSize); |
+ EXPECT_EQ(kReservationSize, vm->size()); |
+ vm->Commit(false); |
+ double* addr = reinterpret_cast<double*>(vm->address()); |
+ addr[0] = 0.5; // Forget to use Write. |
+ VerifiedMemory::Write(&addr[0], 1.5); |
+} |
+ |
+ |
+UNIT_TEST_CASE(VerifyExplicit_Crash) { |
+ Init(); |
+ const intptr_t kReservationSize = 64 * KB; |
+ VirtualMemory* vm = VerifiedMemory::Reserve(kReservationSize); |
+ EXPECT_EQ(kReservationSize, vm->size()); |
+ vm->Commit(false); |
+ double* addr = reinterpret_cast<double*>(vm->address()); |
+ VerifiedMemory::Write(&addr[0], 0.5); |
+ VerifiedMemory::Write(&addr[1], 1.5); |
+ addr[1] = 3.5; // Forget to use Write. |
+ VerifiedMemory::Write(&addr[2], 2.5); |
+ VerifiedMemory::Verify(reinterpret_cast<uword>(addr), 3 * sizeof(double)); |
+} |
+ |
+} // namespace dart |