startup-data-util.cc 2.52 KB
Newer Older
1 2 3 4 5 6 7 8 9
// 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>

10
#include "src/base/file-utils.h"
11
#include "src/base/logging.h"
vogelheim's avatar
vogelheim committed
12
#include "src/base/platform/platform.h"
13
#include "src/utils.h"
14 15 16


namespace v8 {
vogelheim's avatar
vogelheim committed
17
namespace internal {
18 19 20

#ifdef V8_USE_EXTERNAL_STARTUP_DATA

vogelheim's avatar
vogelheim committed
21
namespace {
22

vogelheim's avatar
vogelheim committed
23 24
v8::StartupData g_natives;
v8::StartupData g_snapshot;
25 26


vogelheim's avatar
vogelheim committed
27 28 29
void ClearStartupData(v8::StartupData* data) {
  data->data = nullptr;
  data->raw_size = 0;
30 31 32
}


vogelheim's avatar
vogelheim committed
33 34 35
void DeleteStartupData(v8::StartupData* data) {
  delete[] data->data;
  ClearStartupData(data);
36 37 38
}


vogelheim's avatar
vogelheim committed
39 40 41
void FreeStartupData() {
  DeleteStartupData(&g_natives);
  DeleteStartupData(&g_snapshot);
42 43 44
}


vogelheim's avatar
vogelheim committed
45 46 47
void Load(const char* blob_file, v8::StartupData* startup_data,
          void (*setter_fn)(v8::StartupData*)) {
  ClearStartupData(startup_data);
48

49
  CHECK(blob_file);
50 51

  FILE* file = fopen(blob_file, "rb");
52 53 54 55
  if (!file) {
    PrintF(stderr, "Failed to open startup resource '%s'.\n", blob_file);
    return;
  }
56 57

  fseek(file, 0, SEEK_END);
58
  startup_data->raw_size = static_cast<int>(ftell(file));
59 60 61 62 63 64 65
  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);

66 67 68 69 70
  if (startup_data->raw_size == read_size) {
    (*setter_fn)(startup_data);
  } else {
    PrintF(stderr, "Corrupted startup resource '%s'.\n", blob_file);
  }
71 72
}

vogelheim's avatar
vogelheim committed
73 74 75 76 77 78 79 80 81

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);
}

}  // namespace
82 83
#endif  // V8_USE_EXTERNAL_STARTUP_DATA

vogelheim's avatar
vogelheim committed
84 85 86 87 88 89

void InitializeExternalStartupData(const char* directory_path) {
#ifdef V8_USE_EXTERNAL_STARTUP_DATA
  char* natives;
  char* snapshot;
  LoadFromFiles(RelativePath(&natives, directory_path, "natives_blob.bin"),
90
                RelativePath(&snapshot, directory_path, "snapshot_blob.bin"));
vogelheim's avatar
vogelheim committed
91 92 93 94 95 96 97 98 99 100 101 102 103 104
  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
105
}  // namespace v8