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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GIN_V8_INITIALIZER_H_
#define GIN_V8_INITIALIZER_H_
#include <stdint.h>
#include "base/files/file.h"
#include "base/files/memory_mapped_file.h"
#include "build/build_config.h"
#include "gin/array_buffer.h"
#include "gin/gin_export.h"
#include "gin/public/isolate_holder.h"
#include "gin/public/v8_platform.h"
#include "v8/include/v8-callbacks.h"
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
#include "gin/public/v8_snapshot_file_type.h"
#endif
namespace v8 {
class StartupData;
}
namespace gin {
class GIN_EXPORT V8Initializer {
public:
// This should be called by IsolateHolder::Initialize().
static void Initialize(IsolateHolder::ScriptMode mode,
const std::string& js_command_line_flags,
bool disallow_v8_feature_flag_overrides,
v8::OOMErrorCallback oom_error_callback);
// Get address and size information for currently loaded snapshot.
// If no snapshot is loaded, the return values are null for addresses
// and 0 for sizes.
static void GetV8ExternalSnapshotData(v8::StartupData* snapshot);
static void GetV8ExternalSnapshotData(const char** snapshot_data_out,
int* snapshot_size_out);
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
// Load V8 snapshot from default resources, if they are available.
static void LoadV8Snapshot(
V8SnapshotFileType snapshot_file_type = V8SnapshotFileType::kDefault);
// Load V8 snapshot from user provided file.
// The region argument, if non-zero, specifies the portions
// of the files to be mapped. Since the VM can boot with or without
// the snapshot, this function does not return a status.
static void LoadV8SnapshotFromFile(
base::File snapshot_file,
base::MemoryMappedFile::Region* snapshot_file_region,
V8SnapshotFileType snapshot_file_type);
#if BUILDFLAG(IS_ANDROID)
static base::FilePath GetSnapshotFilePath(
bool abi_32_bit,
V8SnapshotFileType snapshot_file_type);
#endif
#endif // V8_USE_EXTERNAL_STARTUP_DATA
};
} // namespace gin
#endif // GIN_V8_INITIALIZER_H_
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