Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 88 insertions, 0 deletions

diff --git a/chrome/renderer/visitedlink_slave.cc b/chrome/renderer/visitedlink_slave.cc
new file mode 100644
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+++ b/chrome/renderer/visitedlink_slave.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <windows.h>
+#include "base/logging.h"
+#include "base/shared_memory.h"
+#include "chrome/common/win_util.h"
+#include "chrome/renderer/visitedlink_slave.h"
+
+VisitedLinkSlave::VisitedLinkSlave() : shared_memory_(NULL) {
+}
+VisitedLinkSlave::~VisitedLinkSlave() {
+  FreeTable();
+}
+
+// This function's job is to initialize the table with the given
+// shared memory handle. This memory is mappend into the process.
+bool VisitedLinkSlave::Init(SharedMemoryHandle shared_memory) {
+  // since this function may be called again to change the table, we may need
+  // to free old objects
+  FreeTable();
+  DCHECK(shared_memory_ == NULL && hash_table_ == NULL);
+
+  // create the shared memory object
+  shared_memory_ = new SharedMemory(shared_memory, true);
+  if (!shared_memory_)
+    return false;
+
+  // map the header into our process so we can see how long the rest is,
+  // and set the salt
+  if (!shared_memory_->Map(sizeof(SharedHeader)))
+    return false;
+  SharedHeader* header =
+    static_cast<SharedHeader*>(shared_memory_->memory());
+  DCHECK(header);
+  int32 table_len = header->length;
+  memcpy(salt_, header->salt, sizeof(salt_));
+  shared_memory_->Unmap();
+
+  // now do the whole table because we know the length
+  if (!shared_memory_->Map(sizeof(SharedHeader) +
+                          table_len * sizeof(Fingerprint))) {
+    shared_memory_->Close();
+    return false;
+  }
+
+  // commit the data
+  DCHECK(shared_memory_->memory());
+  hash_table_ = reinterpret_cast<Fingerprint*>(
+      static_cast<char*>(shared_memory_->memory()) + sizeof(SharedHeader));
+  table_length_ = table_len;
+  return true;
+}
+
+void VisitedLinkSlave::FreeTable() {
+  if (shared_memory_ ) {
+    delete shared_memory_;
+    shared_memory_ = NULL;
+  }
+  hash_table_ = NULL;
+  table_length_ = 0;
+}