| // 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 { |
| |
| |
| static void ReserveSpaceForSnapshot(Deserializer* deserializer, |
| const char* file_name) { |
| int file_name_length = StrLength(file_name) + 10; |
| Vector<char> name = Vector<char>::New(file_name_length + 1); |
| OS::SNPrintF(name, "%s.size", file_name); |
| FILE* fp = OS::FOpen(name.start(), "r"); |
| CHECK_NE(NULL, fp); |
| int new_size, pointer_size, data_size, code_size, map_size, cell_size; |
| #ifdef _MSC_VER |
| // Avoid warning about unsafe fscanf from MSVC. |
| // Please note that this is only fine if %c and %s are not being used. |
| #define fscanf fscanf_s |
| #endif |
| CHECK_EQ(1, fscanf(fp, "new %d\n", &new_size)); |
| CHECK_EQ(1, fscanf(fp, "pointer %d\n", &pointer_size)); |
| CHECK_EQ(1, fscanf(fp, "data %d\n", &data_size)); |
| CHECK_EQ(1, fscanf(fp, "code %d\n", &code_size)); |
| CHECK_EQ(1, fscanf(fp, "map %d\n", &map_size)); |
| CHECK_EQ(1, fscanf(fp, "cell %d\n", &cell_size)); |
| #ifdef _MSC_VER |
| #undef fscanf |
| #endif |
| fclose(fp); |
| deserializer->set_reservation(NEW_SPACE, new_size); |
| deserializer->set_reservation(OLD_POINTER_SPACE, pointer_size); |
| deserializer->set_reservation(OLD_DATA_SPACE, data_size); |
| deserializer->set_reservation(CODE_SPACE, code_size); |
| deserializer->set_reservation(MAP_SPACE, map_size); |
| deserializer->set_reservation(CELL_SPACE, cell_size); |
| name.Dispose(); |
| } |
| |
| |
| void Snapshot::ReserveSpaceForLinkedInSnapshot(Deserializer* deserializer) { |
| deserializer->set_reservation(NEW_SPACE, new_space_used_); |
| deserializer->set_reservation(OLD_POINTER_SPACE, pointer_space_used_); |
| deserializer->set_reservation(OLD_DATA_SPACE, data_space_used_); |
| deserializer->set_reservation(CODE_SPACE, code_space_used_); |
| deserializer->set_reservation(MAP_SPACE, map_space_used_); |
| deserializer->set_reservation(CELL_SPACE, cell_space_used_); |
| } |
| |
| |
| bool Snapshot::Initialize(const char* snapshot_file) { |
| if (snapshot_file) { |
| int len; |
| byte* str = ReadBytes(snapshot_file, &len); |
| if (!str) return false; |
| bool success; |
| { |
| SnapshotByteSource source(str, len); |
| Deserializer deserializer(&source); |
| ReserveSpaceForSnapshot(&deserializer, snapshot_file); |
| success = V8::Initialize(&deserializer); |
| } |
| DeleteArray(str); |
| return success; |
| } else if (size_ > 0) { |
| SnapshotByteSource source(raw_data_, raw_size_); |
| Deserializer deserializer(&source); |
| ReserveSpaceForLinkedInSnapshot(&deserializer); |
| return V8::Initialize(&deserializer); |
| } |
| return false; |
| } |
| |
| |
| bool Snapshot::HaveASnapshotToStartFrom() { |
| return size_ != 0; |
| } |
| |
| |
| Handle<Context> Snapshot::NewContextFromSnapshot() { |
| if (context_size_ == 0) { |
| return Handle<Context>(); |
| } |
| SnapshotByteSource source(context_raw_data_, |
| context_raw_size_); |
| Deserializer deserializer(&source); |
| Object* root; |
| deserializer.set_reservation(NEW_SPACE, context_new_space_used_); |
| deserializer.set_reservation(OLD_POINTER_SPACE, context_pointer_space_used_); |
| deserializer.set_reservation(OLD_DATA_SPACE, context_data_space_used_); |
| deserializer.set_reservation(CODE_SPACE, context_code_space_used_); |
| deserializer.set_reservation(MAP_SPACE, context_map_space_used_); |
| deserializer.set_reservation(CELL_SPACE, context_cell_space_used_); |
| deserializer.DeserializePartial(&root); |
| CHECK(root->IsContext()); |
| return Handle<Context>(Context::cast(root)); |
| } |
| |
| } } // namespace v8::internal |