v8/src/snapshot-common.cc
erikcorry 458e87fd05 Snapshots: Add --extra-code flag to mksnapshot which lets you specify a file
with more JS code that is loaded into the VM before writing the snapshot.  Get
rid of the hard coded limit on the partial snapshot cache size.  This change
disables most of the serializer tests for the snapshot build of the VM: It's
getting too complicated to support both booting from a snapshot and then
creating a new snapshot from the same VM or loading more code with another
snapshot in the same VM.
Review URL: http://codereview.chromium.org/10574013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11871 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-06-19 18:38:03 +00:00

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3.0 KiB
C++

// Copyright 2006-2008 the V8 project authors. 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.
// The common functionality when building with or without snapshots.
#include "v8.h"
#include "api.h"
#include "serialize.h"
#include "snapshot.h"
#include "platform.h"
namespace v8 {
namespace internal {
bool Snapshot::Deserialize(const byte* content, int len) {
SnapshotByteSource source(content, len);
Deserializer deserializer(&source);
return V8::Initialize(&deserializer);
}
bool Snapshot::Initialize(const char* snapshot_file) {
if (snapshot_file) {
int len;
byte* str = ReadBytes(snapshot_file, &len);
if (!str) return false;
Deserialize(str, len);
DeleteArray(str);
return true;
} else if (size_ > 0) {
Deserialize(raw_data_, raw_size_);
return true;
}
return false;
}
bool Snapshot::HaveASnapshotToStartFrom() {
return size_ != 0;
}
Handle<Context> Snapshot::NewContextFromSnapshot() {
if (context_size_ == 0) {
return Handle<Context>();
}
HEAP->ReserveSpace(new_space_used_,
pointer_space_used_,
data_space_used_,
code_space_used_,
map_space_used_,
cell_space_used_,
large_space_used_);
SnapshotByteSource source(context_raw_data_,
context_raw_size_);
Deserializer deserializer(&source);
Object* root;
deserializer.DeserializePartial(&root);
CHECK(root->IsContext());
return Handle<Context>(Context::cast(root));
}
} } // namespace v8::internal