third_party/WebKit/Source/platform/TestingPlatformSupport.cpp

   1 /*
   2  * Copyright (C) 2014 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32
  33 #include "platform/TestingPlatformSupport.h"
  34
  35 namespace blink {
  36
  37 TestingDiscardableMemory::TestingDiscardableMemory(size_t size) : m_data(size), m_isLocked(true)
  38 {
  39 }
  40
  41 TestingDiscardableMemory::~TestingDiscardableMemory()
  42 {
  43 }
  44
  45 bool TestingDiscardableMemory::lock()
  46 {
  47     ASSERT(!m_isLocked);
  48     m_isLocked = true;
  49     return false;
  50 }
  51
  52 void* TestingDiscardableMemory::data()
  53 {
  54     ASSERT(m_isLocked);
  55     return m_data.data();
  56 }
  57
  58 void TestingDiscardableMemory::unlock()
  59 {
  60     ASSERT(m_isLocked);
  61     m_isLocked = false;
  62     // Force eviction to catch clients not correctly checking the return value of lock().
  63     memset(m_data.data(), 0, m_data.size());
  64 }
  65
  66 TestingPlatformSupport::TestingPlatformSupport(const Config& config)
  67     : m_config(config)
  68     , m_oldPlatform(Platform::current())
  69 {
  70     Platform::initialize(this);
  71 }
  72
  73 TestingPlatformSupport::~TestingPlatformSupport()
  74 {
  75     Platform::initialize(m_oldPlatform);
  76 }
  77
  78 WebDiscardableMemory* TestingPlatformSupport::allocateAndLockDiscardableMemory(size_t bytes)
  79 {
  80     return !m_config.hasDiscardableMemorySupport ? 0 : new TestingDiscardableMemory(bytes);
  81 }
  82
  83 void TestingPlatformSupport::cryptographicallyRandomValues(unsigned char* buffer, size_t length)
  84 {
  85 }
  86
  87 const unsigned char* TestingPlatformSupport::getTraceCategoryEnabledFlag(const char* categoryName)
  88 {
  89     static const unsigned char tracingIsDisabled = 0;
  90     return &tracingIsDisabled;
  91 }
  92
  93 WebString TestingPlatformSupport::defaultLocale()
  94 {
  95     return WebString::fromUTF8("en-US");
  96 }
  97
  98 } // namespace blink