5a0df034d1
BUG=v8:4280 LOG=N Review URL: https://codereview.chromium.org/1667673003 Cr-Commit-Position: refs/heads/master@{#33724}
129 lines
3.3 KiB
C++
129 lines
3.3 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/startup-data-util.h"
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#include <stdlib.h>
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#include <string.h>
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#include "src/base/logging.h"
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#include "src/base/platform/platform.h"
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#include "src/flags.h"
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#include "src/utils.h"
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namespace v8 {
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namespace internal {
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#ifdef V8_USE_EXTERNAL_STARTUP_DATA
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namespace {
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v8::StartupData g_natives;
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v8::StartupData g_snapshot;
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void ClearStartupData(v8::StartupData* data) {
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data->data = nullptr;
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data->raw_size = 0;
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}
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void DeleteStartupData(v8::StartupData* data) {
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delete[] data->data;
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ClearStartupData(data);
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}
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void FreeStartupData() {
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DeleteStartupData(&g_natives);
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DeleteStartupData(&g_snapshot);
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}
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void Load(const char* blob_file, v8::StartupData* startup_data,
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void (*setter_fn)(v8::StartupData*)) {
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ClearStartupData(startup_data);
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CHECK(blob_file);
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FILE* file = fopen(blob_file, "rb");
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if (!file) {
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PrintF(stderr, "Failed to open startup resource '%s'.\n", blob_file);
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return;
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}
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fseek(file, 0, SEEK_END);
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startup_data->raw_size = static_cast<int>(ftell(file));
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rewind(file);
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startup_data->data = new char[startup_data->raw_size];
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int read_size = static_cast<int>(fread(const_cast<char*>(startup_data->data),
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1, startup_data->raw_size, file));
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fclose(file);
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if (startup_data->raw_size == read_size) {
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(*setter_fn)(startup_data);
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} else {
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PrintF(stderr, "Corrupted startup resource '%s'.\n", blob_file);
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}
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}
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void LoadFromFiles(const char* natives_blob, const char* snapshot_blob) {
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Load(natives_blob, &g_natives, v8::V8::SetNativesDataBlob);
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Load(snapshot_blob, &g_snapshot, v8::V8::SetSnapshotDataBlob);
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atexit(&FreeStartupData);
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}
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char* RelativePath(char** buffer, const char* exec_path, const char* name) {
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DCHECK(exec_path);
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int path_separator = static_cast<int>(strlen(exec_path)) - 1;
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while (path_separator >= 0 &&
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!base::OS::isDirectorySeparator(exec_path[path_separator])) {
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path_separator--;
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}
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if (path_separator >= 0) {
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int name_length = static_cast<int>(strlen(name));
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*buffer =
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reinterpret_cast<char*>(calloc(path_separator + name_length + 2, 1));
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*buffer[0] = '\0';
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strncat(*buffer, exec_path, path_separator + 1);
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strncat(*buffer, name, name_length);
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} else {
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*buffer = strdup(name);
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}
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return *buffer;
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}
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} // namespace
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#endif // V8_USE_EXTERNAL_STARTUP_DATA
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void InitializeExternalStartupData(const char* directory_path) {
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#ifdef V8_USE_EXTERNAL_STARTUP_DATA
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char* natives;
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char* snapshot;
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LoadFromFiles(RelativePath(&natives, directory_path, "natives_blob.bin"),
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RelativePath(&snapshot, directory_path,
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FLAG_ignition ? "snapshot_blob_ignition.bin"
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: "snapshot_blob.bin"));
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free(natives);
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free(snapshot);
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#endif // V8_USE_EXTERNAL_STARTUP_DATA
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}
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void InitializeExternalStartupData(const char* natives_blob,
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const char* snapshot_blob) {
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#ifdef V8_USE_EXTERNAL_STARTUP_DATA
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LoadFromFiles(natives_blob, snapshot_blob);
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#endif // V8_USE_EXTERNAL_STARTUP_DATA
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}
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} // namespace internal
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} // namespace v8
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