Support for Signal calls.

Merge in RedPhone

// FREEBIE

jni/webrtc/system_wrappers/source/aligned_malloc_unittest.cc

@@ -0,0 +1,82 @@
+/*
+ *  Copyright (c) 2012 The WebRTC 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 in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/system_wrappers/interface/aligned_malloc.h"
+
+#if _WIN32
+#include <windows.h>
+#else
+#include <stdint.h>
+#endif
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+// Returns true if |size| and |alignment| are valid combinations.
+bool CorrectUsage(size_t size, size_t alignment) {
+  scoped_ptr<char, AlignedFreeDeleter> scoped(
+      static_cast<char*>(AlignedMalloc(size, alignment)));
+  if (scoped.get() == NULL) {
+    return false;
+  }
+  const uintptr_t scoped_address = reinterpret_cast<uintptr_t> (scoped.get());
+  return 0u == scoped_address % alignment;
+}
+
+TEST(AlignedMalloc, GetRightAlign) {
+  const size_t size = 100;
+  const size_t alignment = 32;
+  const size_t left_misalignment = 1;
+  scoped_ptr<char, AlignedFreeDeleter> scoped(
+      static_cast<char*>(AlignedMalloc(size, alignment)));
+  EXPECT_TRUE(scoped.get() != NULL);
+  const uintptr_t aligned_address = reinterpret_cast<uintptr_t> (scoped.get());
+  const uintptr_t misaligned_address = aligned_address - left_misalignment;
+  const char* misaligned_ptr = reinterpret_cast<const char*>(
+      misaligned_address);
+  const char* realigned_ptr = GetRightAlign(misaligned_ptr, alignment);
+  EXPECT_EQ(scoped.get(), realigned_ptr);
+}
+
+TEST(AlignedMalloc, IncorrectSize) {
+  const size_t incorrect_size = 0;
+  const size_t alignment = 64;
+  EXPECT_FALSE(CorrectUsage(incorrect_size, alignment));
+}
+
+TEST(AlignedMalloc, IncorrectAlignment) {
+  const size_t size = 100;
+  const size_t incorrect_alignment = 63;
+  EXPECT_FALSE(CorrectUsage(size, incorrect_alignment));
+}
+
+TEST(AlignedMalloc, AlignTo2Bytes) {
+  size_t size = 100;
+  size_t alignment = 2;
+  EXPECT_TRUE(CorrectUsage(size, alignment));
+}
+
+TEST(AlignedMalloc, AlignTo32Bytes) {
+  size_t size = 100;
+  size_t alignment = 32;
+  EXPECT_TRUE(CorrectUsage(size, alignment));
+}
+
+TEST(AlignedMalloc, AlignTo128Bytes) {
+  size_t size = 100;
+  size_t alignment = 128;
+  EXPECT_TRUE(CorrectUsage(size, alignment));
+}
+
+}  // namespace webrtc
+