| // Copyright 2015 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/startup-data-util.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "src/base/logging.h" |
| #include "src/base/platform/platform.h" |
| #include "src/flags.h" |
| #include "src/utils.h" |
| |
| |
| namespace v8 { |
| namespace internal { |
| |
| #ifdef V8_USE_EXTERNAL_STARTUP_DATA |
| |
| namespace { |
| |
| v8::StartupData g_natives; |
| v8::StartupData g_snapshot; |
| |
| |
| void ClearStartupData(v8::StartupData* data) { |
| data->data = nullptr; |
| data->raw_size = 0; |
| } |
| |
| |
| void DeleteStartupData(v8::StartupData* data) { |
| delete[] data->data; |
| ClearStartupData(data); |
| } |
| |
| |
| void FreeStartupData() { |
| DeleteStartupData(&g_natives); |
| DeleteStartupData(&g_snapshot); |
| } |
| |
| |
| void Load(const char* blob_file, v8::StartupData* startup_data, |
| void (*setter_fn)(v8::StartupData*)) { |
| ClearStartupData(startup_data); |
| |
| CHECK(blob_file); |
| |
| FILE* file = fopen(blob_file, "rb"); |
| if (!file) { |
| PrintF(stderr, "Failed to open startup resource '%s'.\n", blob_file); |
| return; |
| } |
| |
| fseek(file, 0, SEEK_END); |
| startup_data->raw_size = static_cast<int>(ftell(file)); |
| rewind(file); |
| |
| startup_data->data = new char[startup_data->raw_size]; |
| int read_size = static_cast<int>(fread(const_cast<char*>(startup_data->data), |
| 1, startup_data->raw_size, file)); |
| fclose(file); |
| |
| if (startup_data->raw_size == read_size) { |
| (*setter_fn)(startup_data); |
| } else { |
| PrintF(stderr, "Corrupted startup resource '%s'.\n", blob_file); |
| } |
| } |
| |
| |
| void LoadFromFiles(const char* natives_blob, const char* snapshot_blob) { |
| Load(natives_blob, &g_natives, v8::V8::SetNativesDataBlob); |
| Load(snapshot_blob, &g_snapshot, v8::V8::SetSnapshotDataBlob); |
| |
| atexit(&FreeStartupData); |
| } |
| |
| |
| char* RelativePath(char** buffer, const char* exec_path, const char* name) { |
| DCHECK(exec_path); |
| int path_separator = static_cast<int>(strlen(exec_path)) - 1; |
| while (path_separator >= 0 && |
| !base::OS::isDirectorySeparator(exec_path[path_separator])) { |
| path_separator--; |
| } |
| if (path_separator >= 0) { |
| int name_length = static_cast<int>(strlen(name)); |
| *buffer = |
| reinterpret_cast<char*>(calloc(path_separator + name_length + 2, 1)); |
| *buffer[0] = '\0'; |
| strncat(*buffer, exec_path, path_separator + 1); |
| strncat(*buffer, name, name_length); |
| } else { |
| *buffer = strdup(name); |
| } |
| return *buffer; |
| } |
| |
| } // namespace |
| #endif // V8_USE_EXTERNAL_STARTUP_DATA |
| |
| |
| void InitializeExternalStartupData(const char* directory_path) { |
| #ifdef V8_USE_EXTERNAL_STARTUP_DATA |
| char* natives; |
| char* snapshot; |
| LoadFromFiles(RelativePath(&natives, directory_path, "natives_blob.bin"), |
| RelativePath(&snapshot, directory_path, |
| FLAG_ignition ? "snapshot_blob_ignition.bin" |
| : "snapshot_blob.bin")); |
| free(natives); |
| free(snapshot); |
| #endif // V8_USE_EXTERNAL_STARTUP_DATA |
| } |
| |
| |
| void InitializeExternalStartupData(const char* natives_blob, |
| const char* snapshot_blob) { |
| #ifdef V8_USE_EXTERNAL_STARTUP_DATA |
| LoadFromFiles(natives_blob, snapshot_blob); |
| #endif // V8_USE_EXTERNAL_STARTUP_DATA |
| } |
| |
| } // namespace internal |
| } // namespace v8 |