ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | // The common functionality when building with or without snapshots. |
| 29 | |
| 30 | #include "v8.h" |
| 31 | |
| 32 | #include "api.h" |
| 33 | #include "serialize.h" |
| 34 | #include "snapshot.h" |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 35 | #include "platform.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 36 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 37 | namespace v8 { |
| 38 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 39 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 40 | |
| 41 | static void ReserveSpaceForSnapshot(Deserializer* deserializer, |
| 42 | const char* file_name) { |
| 43 | int file_name_length = StrLength(file_name) + 10; |
| 44 | Vector<char> name = Vector<char>::New(file_name_length + 1); |
| 45 | OS::SNPrintF(name, "%s.size", file_name); |
| 46 | FILE* fp = OS::FOpen(name.start(), "r"); |
| 47 | CHECK_NE(NULL, fp); |
| 48 | int new_size, pointer_size, data_size, code_size, map_size, cell_size; |
| 49 | #ifdef _MSC_VER |
| 50 | // Avoid warning about unsafe fscanf from MSVC. |
| 51 | // Please note that this is only fine if %c and %s are not being used. |
| 52 | #define fscanf fscanf_s |
| 53 | #endif |
| 54 | CHECK_EQ(1, fscanf(fp, "new %d\n", &new_size)); |
| 55 | CHECK_EQ(1, fscanf(fp, "pointer %d\n", &pointer_size)); |
| 56 | CHECK_EQ(1, fscanf(fp, "data %d\n", &data_size)); |
| 57 | CHECK_EQ(1, fscanf(fp, "code %d\n", &code_size)); |
| 58 | CHECK_EQ(1, fscanf(fp, "map %d\n", &map_size)); |
| 59 | CHECK_EQ(1, fscanf(fp, "cell %d\n", &cell_size)); |
| 60 | #ifdef _MSC_VER |
| 61 | #undef fscanf |
| 62 | #endif |
| 63 | fclose(fp); |
| 64 | deserializer->set_reservation(NEW_SPACE, new_size); |
| 65 | deserializer->set_reservation(OLD_POINTER_SPACE, pointer_size); |
| 66 | deserializer->set_reservation(OLD_DATA_SPACE, data_size); |
| 67 | deserializer->set_reservation(CODE_SPACE, code_size); |
| 68 | deserializer->set_reservation(MAP_SPACE, map_size); |
| 69 | deserializer->set_reservation(CELL_SPACE, cell_size); |
| 70 | name.Dispose(); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | void Snapshot::ReserveSpaceForLinkedInSnapshot(Deserializer* deserializer) { |
| 75 | deserializer->set_reservation(NEW_SPACE, new_space_used_); |
| 76 | deserializer->set_reservation(OLD_POINTER_SPACE, pointer_space_used_); |
| 77 | deserializer->set_reservation(OLD_DATA_SPACE, data_space_used_); |
| 78 | deserializer->set_reservation(CODE_SPACE, code_space_used_); |
| 79 | deserializer->set_reservation(MAP_SPACE, map_space_used_); |
| 80 | deserializer->set_reservation(CELL_SPACE, cell_space_used_); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 84 | bool Snapshot::Initialize(const char* snapshot_file) { |
| 85 | if (snapshot_file) { |
| 86 | int len; |
ager@chromium.org | ddb913d | 2009-01-27 10:01:48 +0000 | [diff] [blame] | 87 | byte* str = ReadBytes(snapshot_file, &len); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 88 | if (!str) return false; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 89 | bool success; |
| 90 | { |
| 91 | SnapshotByteSource source(str, len); |
| 92 | Deserializer deserializer(&source); |
| 93 | ReserveSpaceForSnapshot(&deserializer, snapshot_file); |
| 94 | success = V8::Initialize(&deserializer); |
| 95 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 96 | DeleteArray(str); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 97 | return success; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 98 | } else if (size_ > 0) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 99 | SnapshotByteSource source(raw_data_, raw_size_); |
| 100 | Deserializer deserializer(&source); |
| 101 | ReserveSpaceForLinkedInSnapshot(&deserializer); |
| 102 | return V8::Initialize(&deserializer); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 103 | } |
| 104 | return false; |
| 105 | } |
| 106 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 107 | |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 108 | bool Snapshot::HaveASnapshotToStartFrom() { |
| 109 | return size_ != 0; |
| 110 | } |
| 111 | |
| 112 | |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 113 | Handle<Context> Snapshot::NewContextFromSnapshot() { |
| 114 | if (context_size_ == 0) { |
| 115 | return Handle<Context>(); |
| 116 | } |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 117 | SnapshotByteSource source(context_raw_data_, |
| 118 | context_raw_size_); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 119 | Deserializer deserializer(&source); |
| 120 | Object* root; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 121 | deserializer.set_reservation(NEW_SPACE, context_new_space_used_); |
| 122 | deserializer.set_reservation(OLD_POINTER_SPACE, context_pointer_space_used_); |
| 123 | deserializer.set_reservation(OLD_DATA_SPACE, context_data_space_used_); |
| 124 | deserializer.set_reservation(CODE_SPACE, context_code_space_used_); |
| 125 | deserializer.set_reservation(MAP_SPACE, context_map_space_used_); |
| 126 | deserializer.set_reservation(CELL_SPACE, context_cell_space_used_); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 127 | deserializer.DeserializePartial(&root); |
| 128 | CHECK(root->IsContext()); |
| 129 | return Handle<Context>(Context::cast(root)); |
| 130 | } |
| 131 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 132 | } } // namespace v8::internal |