Ryan Macnak
5ab4294074
Change-Id: Ibc0ea5c75393c88bf70520fca6ff218ada0cd928 Reviewed-on: https://dart-review.googlesource.com/55840 Reviewed-by: Siva Annamalai <asiva@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
1811 lines
63 KiB
C++
1811 lines
63 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Generate a snapshot file after loading all the scripts specified on the
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// command line.
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <cstdarg>
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#include <memory>
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#include "bin/builtin.h"
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#include "bin/console.h"
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#include "bin/dartutils.h"
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#include "bin/dfe.h"
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#include "bin/eventhandler.h"
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#include "bin/file.h"
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#include "bin/loader.h"
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#include "bin/log.h"
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#include "bin/options.h"
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#include "bin/platform.h"
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#include "bin/thread.h"
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#include "bin/utils.h"
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#include "bin/vmservice_impl.h"
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#include "include/dart_api.h"
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#include "include/dart_tools_api.h"
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#include "platform/globals.h"
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#include "platform/growable_array.h"
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#include "platform/hashmap.h"
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namespace dart {
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namespace bin {
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// Exit code indicating an API error.
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static const int kApiErrorExitCode = 253;
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// Exit code indicating a compilation error.
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static const int kCompilationErrorExitCode = 254;
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// Exit code indicating an unhandled error that is not a compilation error.
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static const int kErrorExitCode = 255;
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#define CHECK_RESULT(result) \
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if (Dart_IsError(result)) { \
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intptr_t exit_code = 0; \
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Log::PrintErr("Error: %s\n", Dart_GetError(result)); \
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if (Dart_IsCompilationError(result)) { \
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exit_code = kCompilationErrorExitCode; \
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} else if (Dart_IsApiError(result)) { \
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exit_code = kApiErrorExitCode; \
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} else { \
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exit_code = kErrorExitCode; \
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} \
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Dart_ExitScope(); \
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Dart_ShutdownIsolate(); \
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exit(exit_code); \
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}
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// The core snapshot to use when creating isolates. Normally NULL, but loaded
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// from a file when creating script snapshots.
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const uint8_t* isolate_snapshot_data = NULL;
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const uint8_t* isolate_snapshot_instructions = NULL;
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// Global state that indicates whether a snapshot is to be created and
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// if so which file to write the snapshot into.
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enum SnapshotKind {
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kCore,
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kCoreJIT,
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kScript,
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kAppAOTBlobs,
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kAppAOTAssembly,
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kVMAOTAssembly,
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};
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static SnapshotKind snapshot_kind = kCore;
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// Global state which contains a pointer to the script name for which
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// a snapshot needs to be created (NULL would result in the creation
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// of a generic snapshot that contains only the corelibs).
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static char* app_script_name = NULL;
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// Global state that captures the entry point manifest files specified on the
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// command line.
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static CommandLineOptions* entry_points_files = NULL;
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// The environment provided through the command line using -D options.
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static dart::HashMap* environment = NULL;
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static void* GetHashmapKeyFromString(char* key) {
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return reinterpret_cast<void*>(key);
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}
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static bool ProcessEnvironmentOption(const char* arg,
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CommandLineOptions* vm_options) {
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return OptionProcessor::ProcessEnvironmentOption(arg, vm_options,
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&environment);
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}
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static Dart_Handle EnvironmentCallback(Dart_Handle name) {
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uint8_t* utf8_array;
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intptr_t utf8_len;
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Dart_Handle result = Dart_Null();
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Dart_Handle handle = Dart_StringToUTF8(name, &utf8_array, &utf8_len);
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if (Dart_IsError(handle)) {
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handle = Dart_ThrowException(
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DartUtils::NewDartArgumentError(Dart_GetError(handle)));
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} else {
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char* name_chars = reinterpret_cast<char*>(malloc(utf8_len + 1));
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memmove(name_chars, utf8_array, utf8_len);
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name_chars[utf8_len] = '\0';
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const char* value = NULL;
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if (environment != NULL) {
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HashMap::Entry* entry =
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environment->Lookup(GetHashmapKeyFromString(name_chars),
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HashMap::StringHash(name_chars), false);
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if (entry != NULL) {
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value = reinterpret_cast<char*>(entry->value);
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}
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}
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if (value != NULL) {
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result = Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(value),
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strlen(value));
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}
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free(name_chars);
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}
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return result;
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}
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static const char* kSnapshotKindNames[] = {
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"core",
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"core-jit",
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"script",
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"app-aot-blobs",
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"app-aot-assembly",
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"vm-aot-assembly",
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NULL,
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};
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#define STRING_OPTIONS_LIST(V) \
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V(vm_snapshot_data, vm_snapshot_data_filename) \
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V(vm_snapshot_instructions, vm_snapshot_instructions_filename) \
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V(isolate_snapshot_data, isolate_snapshot_data_filename) \
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V(isolate_snapshot_instructions, isolate_snapshot_instructions_filename) \
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V(shared_data, shared_data_filename) \
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V(shared_instructions, shared_instructions_filename) \
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V(assembly, assembly_filename) \
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V(script_snapshot, script_snapshot_filename) \
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V(dependencies, dependencies_filename) \
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V(load_compilation_trace, load_compilation_trace_filename) \
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V(package_root, commandline_package_root) \
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V(packages, commandline_packages_file) \
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V(save_obfuscation_map, obfuscation_map_filename)
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#define BOOL_OPTIONS_LIST(V) \
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V(dependencies_only, dependencies_only) \
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V(print_dependencies, print_dependencies) \
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V(obfuscate, obfuscate) \
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V(verbose, verbose) \
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V(version, version) \
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V(help, help)
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#define STRING_OPTION_DEFINITION(flag, variable) \
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static const char* variable = NULL; \
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DEFINE_STRING_OPTION(flag, variable)
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STRING_OPTIONS_LIST(STRING_OPTION_DEFINITION)
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#undef STRING_OPTION_DEFINITION
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#define BOOL_OPTION_DEFINITION(flag, variable) \
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static bool variable = false; \
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DEFINE_BOOL_OPTION(flag, variable)
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BOOL_OPTIONS_LIST(BOOL_OPTION_DEFINITION)
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#undef BOOL_OPTION_DEFINITION
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DEFINE_ENUM_OPTION(snapshot_kind, SnapshotKind, snapshot_kind);
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DEFINE_STRING_OPTION_CB(embedder_entry_points_manifest,
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{ entry_points_files->AddArgument(value); });
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DEFINE_STRING_OPTION_CB(url_mapping,
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{ DartUtils::url_mapping->AddArgument(value); });
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DEFINE_CB_OPTION(ProcessEnvironmentOption);
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static bool IsSnapshottingForPrecompilation() {
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return (snapshot_kind == kAppAOTBlobs) ||
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(snapshot_kind == kAppAOTAssembly) ||
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(snapshot_kind == kVMAOTAssembly);
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}
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static bool SnapshotKindAllowedFromKernel() {
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return snapshot_kind != kScript;
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}
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// clang-format off
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static void PrintUsage() {
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Log::PrintErr(
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"Usage: gen_snapshot [<vm-flags>] [<options>] [<dart-script-file>] \n"
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" \n"
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"Common options: \n"
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"--package_root=<path> \n"
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" Where to find packages, that is, package:... imports. \n"
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"--packages=<packages_file> \n"
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" Where to find a package spec file \n"
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"--url_mapping=<mapping> \n"
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" Uses the URL mapping(s) specified on the command line to load the \n"
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" libraries. \n"
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"--dependencies=<output-file> \n"
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" Generates a Makefile with snapshot output files as targets and all \n"
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" transitive imports as sources. \n"
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"--print_dependencies \n"
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" Prints all transitive imports to stdout. \n"
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"--dependencies_only \n"
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" Don't create and output the snapshot. \n"
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"--help \n"
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" Display this message (add --verbose for information about all VM options).\n"
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"--version \n"
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" Print the VM version. \n"
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" \n"
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"To create a core snapshot: \n"
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"--snapshot_kind=core \n"
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"--vm_snapshot_data=<output-file> \n"
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"--isolate_snapshot_data=<output-file> \n"
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"[<dart-script-file>] \n"
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" \n"
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"Writes a snapshot of <dart-script-file> to the specified snapshot files. \n"
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"If no <dart-script-file> is passed, a generic snapshot of all the corelibs \n"
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"is created. \n"
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" \n"
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"To create a script snapshot with respect to a given core snapshot: \n"
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"--snapshot_kind=script \n"
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"--vm_snapshot_data=<input-file> \n"
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"--isolate_snapshot_data=<input-file> \n"
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"--script_snapshot=<output-file> \n"
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"<dart-script-file> \n"
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" \n"
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"Writes a snapshot of <dart-script-file> to the specified snapshot files. \n"
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"If no <dart-script-file> is passed, a generic snapshot of all the corelibs \n"
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"is created. \n"
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" \n"
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"To create an AOT application snapshot as blobs suitable for loading with \n"
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"mmap: \n"
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"--snapshot_kind=app-aot-blobs \n"
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"--vm_snapshot_data=<output-file> \n"
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"--vm_snapshot_instructions=<output-file> \n"
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"--isolate_snapshot_data=<output-file> \n"
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"--isolate_snapshot_instructions=<output-file> \n"
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"{--embedder_entry_points_manifest=<input-file>} \n"
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"[--obfuscate] \n"
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"[--save-obfuscation-map=<map-filename>] \n"
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" <dart-script-file> \n"
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" \n"
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"To create an AOT application snapshot as assembly suitable for compilation \n"
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"as a static or dynamic library: \n"
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"--snapshot_kind=app-aot-assembly \n"
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"--assembly=<output-file> \n"
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"{--embedder_entry_points_manifest=<input-file>} \n"
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"[--obfuscate] \n"
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"[--save-obfuscation-map=<map-filename>] \n"
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"<dart-script-file> \n"
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" \n"
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"AOT snapshots require entry points manifest files, which list the places \n"
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"in the Dart program the embedder calls from the C API (Dart_Invoke, etc). \n"
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"Not specifying these may cause the tree shaker to remove them from the \n"
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"program. The format of this manifest is as follows. Each line in the \n"
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"manifest is a comma separated list of three elements. The first entry is \n"
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"the library URI, the second entry is the class name and the final entry \n"
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"the function name. The file must be terminated with a newline character. \n"
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" \n"
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"Example: \n"
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" dart:something,SomeClass,doSomething \n"
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" \n"
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"AOT snapshots can be obfuscated: that is all identifiers will be renamed \n"
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"during compilation. This mode is enabled with --obfuscate flag. Mapping \n"
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"between original and obfuscated names can be serialized as a JSON array \n"
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"using --save-obfuscation-map=<filename> option. See dartbug.com/30524 \n"
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"for implementation details and limitations of the obfuscation pass. \n"
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" \n"
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"\n");
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if (verbose) {
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Log::PrintErr(
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"The following options are only used for VM development and may\n"
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"be changed in any future version:\n");
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const char* print_flags = "--print_flags";
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char* error = Dart_SetVMFlags(1, &print_flags);
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ASSERT(error == NULL);
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}
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}
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// clang-format on
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// Parse out the command line arguments. Returns -1 if the arguments
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// are incorrect, 0 otherwise.
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static int ParseArguments(int argc,
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char** argv,
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CommandLineOptions* vm_options,
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char** script_name) {
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const char* kPrefix = "-";
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const intptr_t kPrefixLen = strlen(kPrefix);
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// Skip the binary name.
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int i = 1;
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// Parse out the vm options.
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while ((i < argc) &&
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OptionProcessor::IsValidFlag(argv[i], kPrefix, kPrefixLen)) {
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if (OptionProcessor::TryProcess(argv[i], vm_options)) {
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i += 1;
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continue;
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}
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vm_options->AddArgument(argv[i]);
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i += 1;
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}
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// Get the script name.
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if (i < argc) {
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*script_name = argv[i];
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i += 1;
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} else {
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*script_name = NULL;
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}
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if (help) {
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PrintUsage();
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Platform::Exit(0);
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} else if (version) {
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Log::PrintErr("Dart VM version: %s\n", Dart_VersionString());
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Platform::Exit(0);
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}
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// Verify consistency of arguments.
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if ((commandline_package_root != NULL) &&
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(commandline_packages_file != NULL)) {
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Log::PrintErr(
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"Specifying both a packages directory and a packages "
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"file is invalid.\n\n");
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return -1;
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}
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switch (snapshot_kind) {
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case kCore: {
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if ((vm_snapshot_data_filename == NULL) ||
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(isolate_snapshot_data_filename == NULL)) {
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Log::PrintErr(
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"Building a core snapshot requires specifying output files for "
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"--vm_snapshot_data and --isolate_snapshot_data.\n\n");
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return -1;
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}
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break;
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}
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case kCoreJIT: {
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if ((vm_snapshot_data_filename == NULL) ||
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(vm_snapshot_instructions_filename == NULL) ||
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(isolate_snapshot_data_filename == NULL) ||
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(isolate_snapshot_instructions_filename == NULL)) {
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Log::PrintErr(
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"Building a core JIT snapshot requires specifying output "
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"files for --vm_snapshot_data, --vm_snapshot_instructions, "
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"--isolate_snapshot_data and --isolate_snapshot_instructions.\n\n");
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return -1;
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}
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break;
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}
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case kScript: {
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if ((vm_snapshot_data_filename == NULL) ||
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(isolate_snapshot_data_filename == NULL) ||
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(script_snapshot_filename == NULL) || (*script_name == NULL)) {
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Log::PrintErr(
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"Building a script snapshot requires specifying input files for "
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"--vm_snapshot_data and --isolate_snapshot_data, an output file "
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"for --script_snapshot, and a Dart script.\n\n");
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return -1;
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}
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break;
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}
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case kAppAOTBlobs: {
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if ((vm_snapshot_data_filename == NULL) ||
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(vm_snapshot_instructions_filename == NULL) ||
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(isolate_snapshot_data_filename == NULL) ||
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(isolate_snapshot_instructions_filename == NULL) ||
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(*script_name == NULL)) {
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Log::PrintErr(
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"Building an AOT snapshot as blobs requires specifying output "
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"files for --vm_snapshot_data, --vm_snapshot_instructions, "
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"--isolate_snapshot_data and --isolate_snapshot_instructions and a "
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"Dart script.\n\n");
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return -1;
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}
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break;
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}
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case kAppAOTAssembly: {
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if ((assembly_filename == NULL) || (*script_name == NULL)) {
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Log::PrintErr(
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"Building an AOT snapshot as assembly requires specifying "
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"an output file for --assembly and a Dart script.\n\n");
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return -1;
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}
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break;
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}
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case kVMAOTAssembly: {
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if ((assembly_filename == NULL) || (*script_name != NULL)) {
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Log::PrintErr(
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"Building an AOT snapshot as assembly requires specifying "
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"an output file for --assembly and a Dart script.\n\n");
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return -1;
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}
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break;
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}
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}
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if (!obfuscate && obfuscation_map_filename != NULL) {
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Log::PrintErr(
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"--obfuscation_map=<...> should only be specified when obfuscation is "
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"enabled by --obfuscate flag.\n\n");
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return -1;
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}
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if (obfuscate && !IsSnapshottingForPrecompilation()) {
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Log::PrintErr(
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"Obfuscation can only be enabled when building AOT snapshot.\n\n");
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return -1;
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}
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return 0;
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}
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static File* OpenFile(const char* filename) {
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File* file = File::Open(NULL, filename, File::kWriteTruncate);
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if (file == NULL) {
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Log::PrintErr("Error: Unable to write file: %s\n\n", filename);
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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exit(kErrorExitCode);
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}
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return file;
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}
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static void WriteFile(const char* filename,
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const uint8_t* buffer,
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const intptr_t size) {
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File* file = OpenFile(filename);
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RefCntReleaseScope<File> rs(file);
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if (!file->WriteFully(buffer, size)) {
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Log::PrintErr("Error: Unable to write file: %s\n\n", filename);
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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exit(kErrorExitCode);
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}
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}
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static void ReadFile(const char* filename, uint8_t** buffer, intptr_t* size) {
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File* file = File::Open(NULL, filename, File::kRead);
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if (file == NULL) {
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Log::PrintErr("Unable to open file %s\n", filename);
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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exit(kErrorExitCode);
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}
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RefCntReleaseScope<File> rs(file);
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*size = file->Length();
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*buffer = reinterpret_cast<uint8_t*>(malloc(*size));
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if (!file->ReadFully(*buffer, *size)) {
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Log::PrintErr("Unable to read file %s\n", filename);
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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exit(kErrorExitCode);
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}
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}
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class UriResolverIsolateScope {
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public:
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UriResolverIsolateScope() {
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ASSERT(isolate != NULL);
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snapshotted_isolate_ = Dart_CurrentIsolate();
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Dart_ExitIsolate();
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Dart_EnterIsolate(isolate);
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Dart_EnterScope();
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}
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~UriResolverIsolateScope() {
|
|
ASSERT(snapshotted_isolate_ != NULL);
|
|
Dart_ExitScope();
|
|
Dart_ExitIsolate();
|
|
Dart_EnterIsolate(snapshotted_isolate_);
|
|
}
|
|
|
|
static Dart_Isolate isolate;
|
|
|
|
private:
|
|
Dart_Isolate snapshotted_isolate_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(UriResolverIsolateScope);
|
|
};
|
|
|
|
Dart_Isolate UriResolverIsolateScope::isolate = NULL;
|
|
|
|
static void AddDependency(const char* uri_string) {
|
|
IsolateData* isolate_data =
|
|
reinterpret_cast<IsolateData*>(Dart_CurrentIsolateData());
|
|
MallocGrowableArray<char*>* dependencies = isolate_data->dependencies();
|
|
if (dependencies != NULL) {
|
|
dependencies->Add(strdup(uri_string));
|
|
}
|
|
}
|
|
|
|
static Dart_Handle LoadUrlContents(const char* uri_string) {
|
|
bool failed = false;
|
|
char* error_string = NULL;
|
|
uint8_t* payload = NULL;
|
|
intptr_t payload_length = 0;
|
|
// Switch to the UriResolver Isolate and load the script.
|
|
{
|
|
UriResolverIsolateScope scope;
|
|
|
|
Dart_Handle resolved_uri = Dart_NewStringFromCString(uri_string);
|
|
Dart_Handle result =
|
|
Loader::LoadUrlContents(resolved_uri, &payload, &payload_length);
|
|
if (Dart_IsError(result)) {
|
|
failed = true;
|
|
error_string = strdup(Dart_GetError(result));
|
|
}
|
|
}
|
|
AddDependency(uri_string);
|
|
// Switch back to the isolate from which we generate the snapshot and
|
|
// create the source string for the specified uri.
|
|
Dart_Handle result;
|
|
if (!failed) {
|
|
result = Dart_NewStringFromUTF8(payload, payload_length);
|
|
free(payload);
|
|
} else {
|
|
result = Dart_NewApiError(error_string);
|
|
free(error_string);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static Dart_Handle ResolveUriInWorkingDirectory(const char* script_uri) {
|
|
bool failed = false;
|
|
char* result_string = NULL;
|
|
|
|
{
|
|
UriResolverIsolateScope scope;
|
|
|
|
// Run DartUtils::ResolveUriInWorkingDirectory in context of uri resolver
|
|
// isolate.
|
|
Dart_Handle result = DartUtils::ResolveUriInWorkingDirectory(
|
|
DartUtils::NewString(script_uri));
|
|
if (Dart_IsError(result)) {
|
|
failed = true;
|
|
result_string = strdup(Dart_GetError(result));
|
|
} else {
|
|
result_string = strdup(DartUtils::GetStringValue(result));
|
|
}
|
|
}
|
|
|
|
Dart_Handle result = failed ? Dart_NewApiError(result_string)
|
|
: DartUtils::NewString(result_string);
|
|
free(result_string);
|
|
return result;
|
|
}
|
|
|
|
static Dart_Handle LoadSnapshotCreationScript(const char* script_name) {
|
|
// First resolve the specified script uri with respect to the original
|
|
// working directory.
|
|
Dart_Handle resolved_uri = ResolveUriInWorkingDirectory(script_name);
|
|
if (Dart_IsError(resolved_uri)) {
|
|
return resolved_uri;
|
|
}
|
|
// Now load the contents of the specified uri.
|
|
const char* resolved_uri_string = DartUtils::GetStringValue(resolved_uri);
|
|
Dart_Handle source = LoadUrlContents(resolved_uri_string);
|
|
|
|
if (Dart_IsError(source)) {
|
|
return source;
|
|
}
|
|
if ((snapshot_kind == kCore) || (snapshot_kind == kCoreJIT)) {
|
|
return Dart_LoadLibrary(resolved_uri, Dart_Null(), source, 0, 0);
|
|
} else {
|
|
return Dart_LoadScript(resolved_uri, Dart_Null(), source, 0, 0);
|
|
}
|
|
}
|
|
|
|
static Builtin::BuiltinLibraryId BuiltinId(const char* url) {
|
|
if (DartUtils::IsDartBuiltinLibURL(url)) {
|
|
return Builtin::kBuiltinLibrary;
|
|
}
|
|
if (DartUtils::IsDartIOLibURL(url)) {
|
|
return Builtin::kIOLibrary;
|
|
}
|
|
if (DartUtils::IsDartHttpLibURL(url)) {
|
|
return Builtin::kHttpLibrary;
|
|
}
|
|
if (DartUtils::IsDartCLILibURL(url)) {
|
|
return Builtin::kCLILibrary;
|
|
}
|
|
return Builtin::kInvalidLibrary;
|
|
}
|
|
|
|
// Generates a depfile like gcc -M -MF. Must be consumable by Ninja.
|
|
class DependenciesFileWriter : public ValueObject {
|
|
public:
|
|
DependenciesFileWriter() : dependencies_(NULL), file_(NULL), success_(true) {}
|
|
|
|
void WriteDependencies(MallocGrowableArray<char*>* dependencies) {
|
|
dependencies_ = dependencies;
|
|
|
|
file_ = File::Open(NULL, dependencies_filename, File::kWriteTruncate);
|
|
if (file_ == NULL) {
|
|
Log::PrintErr("Error: Unable to open dependencies file: %s\n\n",
|
|
dependencies_filename);
|
|
exit(kErrorExitCode);
|
|
}
|
|
RefCntReleaseScope<File> rs(file_);
|
|
|
|
// Write dependencies for one of the output files.
|
|
// TODO(https://github.com/ninja-build/ninja/issues/1184): Do this for all
|
|
// output files.
|
|
switch (snapshot_kind) {
|
|
case kCore:
|
|
WriteDependenciesWithTarget(vm_snapshot_data_filename);
|
|
// WriteDependenciesWithTarget(isolate_snapshot_data_filename);
|
|
break;
|
|
case kScript:
|
|
WriteDependenciesWithTarget(script_snapshot_filename);
|
|
break;
|
|
case kAppAOTAssembly:
|
|
WriteDependenciesWithTarget(assembly_filename);
|
|
break;
|
|
case kCoreJIT:
|
|
case kAppAOTBlobs:
|
|
WriteDependenciesWithTarget(vm_snapshot_data_filename);
|
|
// WriteDependenciesWithTarget(vm_snapshot_instructions_filename);
|
|
// WriteDependenciesWithTarget(isolate_snapshot_data_filename);
|
|
// WriteDependenciesWithTarget(isolate_snapshot_instructions_filename);
|
|
break;
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
|
|
if (!success_) {
|
|
Log::PrintErr("Error: Unable to write dependencies file: %s\n\n",
|
|
dependencies_filename);
|
|
exit(kErrorExitCode);
|
|
}
|
|
}
|
|
|
|
private:
|
|
void WriteDependenciesWithTarget(const char* target) {
|
|
WritePath(target);
|
|
Write(": ");
|
|
|
|
if (snapshot_kind == kScript) {
|
|
if (vm_snapshot_data_filename != NULL) {
|
|
WritePath(vm_snapshot_data_filename);
|
|
}
|
|
if (vm_snapshot_instructions_filename != NULL) {
|
|
WritePath(vm_snapshot_instructions_filename);
|
|
}
|
|
if (isolate_snapshot_data_filename != NULL) {
|
|
WritePath(isolate_snapshot_data_filename);
|
|
}
|
|
if (isolate_snapshot_instructions_filename != NULL) {
|
|
WritePath(isolate_snapshot_instructions_filename);
|
|
}
|
|
}
|
|
|
|
for (intptr_t i = 0; i < dependencies_->length(); i++) {
|
|
WritePath(dependencies_->At(i));
|
|
}
|
|
|
|
Write("\n");
|
|
}
|
|
|
|
char* EscapePath(const char* path) {
|
|
char* escaped_path = reinterpret_cast<char*>(malloc(strlen(path) * 2 + 1));
|
|
const char* read_cursor = path;
|
|
char* write_cursor = escaped_path;
|
|
while (*read_cursor != '\0') {
|
|
if ((*read_cursor == ' ') || (*read_cursor == '\\')) {
|
|
*write_cursor++ = '\\';
|
|
}
|
|
*write_cursor++ = *read_cursor++;
|
|
}
|
|
*write_cursor = '\0';
|
|
return escaped_path;
|
|
}
|
|
|
|
void WritePath(const char* path) {
|
|
char* escaped_path = EscapePath(path);
|
|
success_ &= file_->Print("%s ", escaped_path);
|
|
free(escaped_path);
|
|
}
|
|
|
|
void Write(const char* string) { success_ &= file_->Print("%s", string); }
|
|
|
|
MallocGrowableArray<char*>* dependencies_;
|
|
File* file_;
|
|
bool success_;
|
|
};
|
|
|
|
static void CreateAndWriteDependenciesFile() {
|
|
IsolateData* isolate_data =
|
|
reinterpret_cast<IsolateData*>(Dart_CurrentIsolateData());
|
|
MallocGrowableArray<char*>* dependencies = isolate_data->dependencies();
|
|
if (dependencies == NULL) {
|
|
return;
|
|
}
|
|
|
|
Loader::ResolveDependenciesAsFilePaths();
|
|
|
|
ASSERT((dependencies_filename != NULL) || print_dependencies);
|
|
if (dependencies_filename != NULL) {
|
|
DependenciesFileWriter writer;
|
|
writer.WriteDependencies(dependencies);
|
|
}
|
|
|
|
if (print_dependencies) {
|
|
Log::Print("%s\n", vm_snapshot_data_filename);
|
|
if (snapshot_kind == kScript) {
|
|
if (vm_snapshot_data_filename != NULL) {
|
|
Log::Print("%s\n", vm_snapshot_data_filename);
|
|
}
|
|
if (vm_snapshot_instructions_filename != NULL) {
|
|
Log::Print("%s\n", vm_snapshot_instructions_filename);
|
|
}
|
|
if (isolate_snapshot_data_filename != NULL) {
|
|
Log::Print("%s\n", isolate_snapshot_data_filename);
|
|
}
|
|
if (isolate_snapshot_instructions_filename != NULL) {
|
|
Log::Print("%s\n", isolate_snapshot_instructions_filename);
|
|
}
|
|
}
|
|
for (intptr_t i = 0; i < dependencies->length(); i++) {
|
|
Log::Print("%s\n", dependencies->At(i));
|
|
}
|
|
}
|
|
|
|
for (intptr_t i = 0; i < dependencies->length(); i++) {
|
|
free(dependencies->At(i));
|
|
}
|
|
delete dependencies;
|
|
isolate_data->set_dependencies(NULL);
|
|
}
|
|
|
|
static Dart_Handle CreateSnapshotLibraryTagHandler(Dart_LibraryTag tag,
|
|
Dart_Handle library,
|
|
Dart_Handle url) {
|
|
if (!Dart_IsLibrary(library)) {
|
|
return Dart_NewApiError("not a library");
|
|
}
|
|
Dart_Handle library_url = Dart_LibraryUrl(library);
|
|
if (Dart_IsError(library_url)) {
|
|
return Dart_NewApiError("accessing library url failed");
|
|
}
|
|
const char* library_url_string = DartUtils::GetStringValue(library_url);
|
|
const char* mapped_library_url_string =
|
|
DartUtils::MapLibraryUrl(library_url_string);
|
|
if (mapped_library_url_string != NULL) {
|
|
library_url = ResolveUriInWorkingDirectory(mapped_library_url_string);
|
|
library_url_string = DartUtils::GetStringValue(library_url);
|
|
}
|
|
|
|
if (!Dart_IsString(url)) {
|
|
return Dart_NewApiError("url is not a string");
|
|
}
|
|
const char* url_string = DartUtils::GetStringValue(url);
|
|
const char* mapped_url_string = DartUtils::MapLibraryUrl(url_string);
|
|
|
|
Builtin::BuiltinLibraryId libraryBuiltinId = BuiltinId(library_url_string);
|
|
if (tag == Dart_kCanonicalizeUrl) {
|
|
if (mapped_url_string) {
|
|
return url;
|
|
}
|
|
// Parts of internal libraries are handled internally.
|
|
if (libraryBuiltinId != Builtin::kInvalidLibrary) {
|
|
return url;
|
|
}
|
|
return Dart_DefaultCanonicalizeUrl(library_url, url);
|
|
}
|
|
|
|
Builtin::BuiltinLibraryId builtinId = BuiltinId(url_string);
|
|
if ((builtinId != Builtin::kInvalidLibrary) && (mapped_url_string == NULL)) {
|
|
// Special case for importing a builtin library that isn't remapped.
|
|
if (tag == Dart_kImportTag) {
|
|
return Builtin::LoadLibrary(url, builtinId);
|
|
}
|
|
ASSERT(tag == Dart_kSourceTag);
|
|
return DartUtils::NewError("Unable to part '%s' ", url_string);
|
|
}
|
|
|
|
if (libraryBuiltinId != Builtin::kInvalidLibrary) {
|
|
// Special case for parting sources of a builtin library.
|
|
if (tag == Dart_kSourceTag) {
|
|
intptr_t len = snprintf(NULL, 0, "%s/%s", library_url_string, url_string);
|
|
char* patch_filename = reinterpret_cast<char*>(malloc(len + 1));
|
|
snprintf(patch_filename, len + 1, "%s/%s", library_url_string,
|
|
url_string);
|
|
Dart_Handle prefixed_url = Dart_NewStringFromCString(patch_filename);
|
|
Dart_Handle result = Dart_LoadSource(
|
|
library, prefixed_url, Dart_Null(),
|
|
Builtin::PartSource(libraryBuiltinId, patch_filename), 0, 0);
|
|
free(patch_filename);
|
|
return result;
|
|
}
|
|
ASSERT(tag == Dart_kImportTag);
|
|
return DartUtils::NewError("Unable to import '%s' ", url_string);
|
|
}
|
|
|
|
Dart_Handle resolved_url = url;
|
|
if (mapped_url_string != NULL) {
|
|
// Mapped urls are relative to working directory.
|
|
resolved_url = ResolveUriInWorkingDirectory(mapped_url_string);
|
|
if (Dart_IsError(resolved_url)) {
|
|
return resolved_url;
|
|
}
|
|
}
|
|
const char* resolved_uri_string = DartUtils::GetStringValue(resolved_url);
|
|
Dart_Handle source = LoadUrlContents(resolved_uri_string);
|
|
if (Dart_IsError(source)) {
|
|
return source;
|
|
}
|
|
if (tag == Dart_kImportTag) {
|
|
return Dart_LoadLibrary(url, Dart_Null(), source, 0, 0);
|
|
} else {
|
|
ASSERT(tag == Dart_kSourceTag);
|
|
return Dart_LoadSource(library, url, Dart_Null(), source, 0, 0);
|
|
}
|
|
}
|
|
|
|
static Dart_Handle LoadGenericSnapshotCreationScript(
|
|
Builtin::BuiltinLibraryId id) {
|
|
Dart_Handle source = Builtin::Source(id);
|
|
if (Dart_IsError(source)) {
|
|
return source; // source contains the error string.
|
|
}
|
|
Dart_Handle lib;
|
|
// Load the builtin library to make it available in the snapshot
|
|
// for importing.
|
|
lib = Builtin::LoadAndCheckLibrary(id);
|
|
ASSERT(!Dart_IsError(lib));
|
|
return lib;
|
|
}
|
|
|
|
static void LoadEntryPoint(size_t lib_index,
|
|
const Dart_QualifiedFunctionName* entry) {
|
|
if (strcmp(entry->library_uri, "::") == 0) {
|
|
return; // Root library always loaded; can't `import '::';`.
|
|
}
|
|
|
|
Dart_Handle library_string = Dart_NewStringFromCString(entry->library_uri);
|
|
DART_CHECK_VALID(library_string);
|
|
Dart_Handle library = Dart_LookupLibrary(library_string);
|
|
// Embedder entry points may be setup in libraries that have not been
|
|
// explicitly loaded by the application script. In such cases, library lookup
|
|
// will fail. Manually load those libraries.
|
|
if (Dart_IsError(library)) {
|
|
static const uint32_t kLoadBufferMaxSize = 128;
|
|
char* load_buffer =
|
|
reinterpret_cast<char*>(calloc(kLoadBufferMaxSize, sizeof(char)));
|
|
snprintf(load_buffer, kLoadBufferMaxSize, "import '%s';",
|
|
DartUtils::GetStringValue(library_string));
|
|
Dart_Handle script_handle = Dart_NewStringFromCString(load_buffer);
|
|
memset(load_buffer, 0, kLoadBufferMaxSize);
|
|
snprintf(load_buffer, kLoadBufferMaxSize, "dart:_snapshot_%zu", lib_index);
|
|
Dart_Handle script_url = Dart_NewStringFromCString(load_buffer);
|
|
free(load_buffer);
|
|
Dart_Handle loaded =
|
|
Dart_LoadLibrary(script_url, Dart_Null(), script_handle, 0, 0);
|
|
DART_CHECK_VALID(loaded);
|
|
|
|
// Do a fresh lookup
|
|
library = Dart_LookupLibrary(library_string);
|
|
}
|
|
|
|
DART_CHECK_VALID(library);
|
|
}
|
|
|
|
static void ImportNativeEntryPointLibrariesIntoRoot(
|
|
const Dart_QualifiedFunctionName* entries) {
|
|
if (entries == NULL) {
|
|
return;
|
|
}
|
|
|
|
size_t index = 0;
|
|
while (true) {
|
|
Dart_QualifiedFunctionName entry = entries[index++];
|
|
if (entry.library_uri == NULL) {
|
|
// The termination sentinel has null members.
|
|
break;
|
|
}
|
|
if (strcmp(entry.library_uri, "::") != 0) {
|
|
Dart_Handle entry_library =
|
|
Dart_LookupLibrary(Dart_NewStringFromCString(entry.library_uri));
|
|
DART_CHECK_VALID(entry_library);
|
|
Dart_Handle import_result = Dart_LibraryImportLibrary(
|
|
entry_library, Dart_RootLibrary(), Dart_EmptyString());
|
|
DART_CHECK_VALID(import_result);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void LoadEntryPoints(const Dart_QualifiedFunctionName* entries) {
|
|
if (entries == NULL) {
|
|
return;
|
|
}
|
|
|
|
// Setup native resolvers for all libraries found in the manifest.
|
|
size_t index = 0;
|
|
while (true) {
|
|
Dart_QualifiedFunctionName entry = entries[index++];
|
|
if (entry.library_uri == NULL) {
|
|
// The termination sentinel has null members.
|
|
break;
|
|
}
|
|
// Ensure library named in entry point is loaded.
|
|
LoadEntryPoint(index, &entry);
|
|
}
|
|
}
|
|
|
|
static void CleanupEntryPointItem(const Dart_QualifiedFunctionName* entry) {
|
|
if (entry == NULL) {
|
|
return;
|
|
}
|
|
// The allocation used for these entries is zero'ed. So even in error cases,
|
|
// references to some entries will be null. Calling this on an already cleaned
|
|
// up entry is programmer error.
|
|
free(const_cast<char*>(entry->library_uri));
|
|
free(const_cast<char*>(entry->class_name));
|
|
free(const_cast<char*>(entry->function_name));
|
|
}
|
|
|
|
static void CleanupEntryPointsCollection(Dart_QualifiedFunctionName* entries) {
|
|
if (entries == NULL) {
|
|
return;
|
|
}
|
|
|
|
size_t index = 0;
|
|
while (true) {
|
|
Dart_QualifiedFunctionName entry = entries[index++];
|
|
if (entry.library_uri == NULL) {
|
|
break;
|
|
}
|
|
CleanupEntryPointItem(&entry);
|
|
}
|
|
free(entries);
|
|
}
|
|
|
|
char* ParserErrorStringCreate(const char* format, ...) {
|
|
static const size_t kErrorBufferSize = 256;
|
|
|
|
char* error_buffer =
|
|
reinterpret_cast<char*>(calloc(kErrorBufferSize, sizeof(char)));
|
|
va_list args;
|
|
va_start(args, format);
|
|
vsnprintf(error_buffer, kErrorBufferSize, format, args);
|
|
va_end(args);
|
|
|
|
// In case of error, the buffer is released by the caller
|
|
return error_buffer;
|
|
}
|
|
|
|
const char* ParseEntryNameForIndex(uint8_t index) {
|
|
switch (index) {
|
|
case 0:
|
|
return "Library";
|
|
case 1:
|
|
return "Class";
|
|
case 2:
|
|
return "Function";
|
|
default:
|
|
return "Unknown";
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static bool ParseEntryPointsManifestSingleLine(
|
|
const char* line,
|
|
Dart_QualifiedFunctionName* entry,
|
|
char** error) {
|
|
bool success = true;
|
|
size_t offset = 0;
|
|
for (uint8_t i = 0; i < 3; i++) {
|
|
const char* component = strchr(line + offset, i == 2 ? '\n' : ',');
|
|
if (component == NULL) {
|
|
success = false;
|
|
*error = ParserErrorStringCreate(
|
|
"Manifest entries must be comma separated and newline terminated. "
|
|
"Could not parse '%s' on line '%s'",
|
|
ParseEntryNameForIndex(i), line);
|
|
break;
|
|
}
|
|
|
|
int64_t chars_read = component - (line + offset);
|
|
if (chars_read <= 0) {
|
|
success = false;
|
|
*error =
|
|
ParserErrorStringCreate("There is no '%s' specified on line '%s'",
|
|
ParseEntryNameForIndex(i), line);
|
|
break;
|
|
}
|
|
|
|
if (entry != NULL) {
|
|
// These allocations are collected in |CleanupEntryPointsCollection|.
|
|
char* entry_item =
|
|
reinterpret_cast<char*>(calloc(chars_read + 1, sizeof(char)));
|
|
memmove(entry_item, line + offset, chars_read);
|
|
|
|
switch (i) {
|
|
case 0: // library
|
|
entry->library_uri = entry_item;
|
|
break;
|
|
case 1: // class
|
|
entry->class_name = entry_item;
|
|
break;
|
|
case 2: // function
|
|
entry->function_name = entry_item;
|
|
break;
|
|
default:
|
|
free(entry_item);
|
|
success = false;
|
|
*error = ParserErrorStringCreate("Internal parser error\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
offset += chars_read + 1;
|
|
}
|
|
return success;
|
|
}
|
|
|
|
int64_t ParseEntryPointsManifestLines(FILE* file,
|
|
Dart_QualifiedFunctionName* collection) {
|
|
int64_t entries = 0;
|
|
|
|
static const int kManifestMaxLineLength = 1024;
|
|
char* line = reinterpret_cast<char*>(malloc(kManifestMaxLineLength));
|
|
size_t line_number = 0;
|
|
while (true) {
|
|
line_number++;
|
|
char* read_line = fgets(line, kManifestMaxLineLength, file);
|
|
|
|
if (read_line == NULL) {
|
|
if ((feof(file) != 0) && (ferror(file) != 0)) {
|
|
Log::PrintErr(
|
|
"Error while reading line number %zu. The manifest must be "
|
|
"terminated by a newline\n",
|
|
line_number);
|
|
entries = -1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if ((read_line[0] == '\n') || (read_line[0] == '#')) {
|
|
// Blank or comment line.
|
|
continue;
|
|
}
|
|
|
|
Dart_QualifiedFunctionName* entry =
|
|
collection != NULL ? collection + entries : NULL;
|
|
|
|
char* error_buffer = NULL;
|
|
if (!ParseEntryPointsManifestSingleLine(read_line, entry, &error_buffer)) {
|
|
CleanupEntryPointItem(entry);
|
|
Log::PrintErr("Parser error on line %zu: %s\n", line_number,
|
|
error_buffer);
|
|
free(error_buffer);
|
|
entries = -1;
|
|
break;
|
|
}
|
|
|
|
entries++;
|
|
}
|
|
|
|
free(line);
|
|
|
|
return entries;
|
|
}
|
|
|
|
static Dart_QualifiedFunctionName* ParseEntryPointsManifestFiles() {
|
|
// Total number of entries across all manifest files.
|
|
int64_t entry_count = 0;
|
|
|
|
// Parse the files once but don't store the results. This is done to first
|
|
// determine the number of entries in the manifest
|
|
for (intptr_t i = 0; i < entry_points_files->count(); i++) {
|
|
const char* path = entry_points_files->GetArgument(i);
|
|
|
|
FILE* file = fopen(path, "r");
|
|
|
|
if (file == NULL) {
|
|
Log::PrintErr("Could not open entry points manifest file `%s`\n", path);
|
|
return NULL;
|
|
}
|
|
|
|
int64_t entries = ParseEntryPointsManifestLines(file, NULL);
|
|
fclose(file);
|
|
|
|
if (entries <= 0) {
|
|
Log::PrintErr(
|
|
"Manifest file `%s` specified is invalid or contained no entries\n",
|
|
path);
|
|
return NULL;
|
|
}
|
|
|
|
entry_count += entries;
|
|
}
|
|
|
|
// Allocate enough storage for the entries in the file plus a termination
|
|
// sentinel and parse it again to populate the allocation
|
|
Dart_QualifiedFunctionName* entries =
|
|
reinterpret_cast<Dart_QualifiedFunctionName*>(
|
|
calloc(entry_count + 1, sizeof(Dart_QualifiedFunctionName)));
|
|
|
|
int64_t parsed_entry_count = 0;
|
|
for (intptr_t i = 0; i < entry_points_files->count(); i++) {
|
|
const char* path = entry_points_files->GetArgument(i);
|
|
FILE* file = fopen(path, "r");
|
|
parsed_entry_count +=
|
|
ParseEntryPointsManifestLines(file, &entries[parsed_entry_count]);
|
|
fclose(file);
|
|
}
|
|
|
|
ASSERT(parsed_entry_count == entry_count);
|
|
|
|
// The entries allocation must be explicitly cleaned up via
|
|
// |CleanupEntryPointsCollection|
|
|
return entries;
|
|
}
|
|
|
|
static Dart_QualifiedFunctionName* ParseEntryPointsManifestIfPresent() {
|
|
Dart_QualifiedFunctionName* entries = ParseEntryPointsManifestFiles();
|
|
if ((entries == NULL) && IsSnapshottingForPrecompilation()) {
|
|
Log::PrintErr(
|
|
"Could not find native embedder entry points during precompilation\n");
|
|
exit(kErrorExitCode);
|
|
}
|
|
return entries;
|
|
}
|
|
|
|
static void LoadCompilationTrace() {
|
|
if ((load_compilation_trace_filename != NULL) &&
|
|
(snapshot_kind == kCoreJIT)) {
|
|
uint8_t* buffer = NULL;
|
|
intptr_t size = 0;
|
|
ReadFile(load_compilation_trace_filename, &buffer, &size);
|
|
Dart_Handle result = Dart_LoadCompilationTrace(buffer, size);
|
|
CHECK_RESULT(result);
|
|
}
|
|
}
|
|
|
|
static void CreateAndWriteCoreSnapshot() {
|
|
ASSERT(snapshot_kind == kCore);
|
|
ASSERT(vm_snapshot_data_filename != NULL);
|
|
ASSERT(isolate_snapshot_data_filename != NULL);
|
|
|
|
Dart_Handle result;
|
|
uint8_t* vm_snapshot_data_buffer = NULL;
|
|
intptr_t vm_snapshot_data_size = 0;
|
|
uint8_t* isolate_snapshot_data_buffer = NULL;
|
|
intptr_t isolate_snapshot_data_size = 0;
|
|
|
|
// First create a snapshot.
|
|
result = Dart_CreateSnapshot(&vm_snapshot_data_buffer, &vm_snapshot_data_size,
|
|
&isolate_snapshot_data_buffer,
|
|
&isolate_snapshot_data_size);
|
|
CHECK_RESULT(result);
|
|
|
|
// Now write the vm isolate and isolate snapshots out to the
|
|
// specified file and exit.
|
|
WriteFile(vm_snapshot_data_filename, vm_snapshot_data_buffer,
|
|
vm_snapshot_data_size);
|
|
if (vm_snapshot_instructions_filename != NULL) {
|
|
WriteFile(vm_snapshot_instructions_filename, NULL, 0);
|
|
}
|
|
WriteFile(isolate_snapshot_data_filename, isolate_snapshot_data_buffer,
|
|
isolate_snapshot_data_size);
|
|
if (isolate_snapshot_instructions_filename != NULL) {
|
|
WriteFile(isolate_snapshot_instructions_filename, NULL, 0);
|
|
}
|
|
}
|
|
|
|
static void CreateAndWriteCoreJITSnapshot() {
|
|
ASSERT(snapshot_kind == kCoreJIT);
|
|
ASSERT(vm_snapshot_data_filename != NULL);
|
|
ASSERT(vm_snapshot_instructions_filename != NULL);
|
|
ASSERT(isolate_snapshot_data_filename != NULL);
|
|
ASSERT(isolate_snapshot_instructions_filename != NULL);
|
|
|
|
Dart_Handle result;
|
|
uint8_t* vm_snapshot_data_buffer = NULL;
|
|
intptr_t vm_snapshot_data_size = 0;
|
|
uint8_t* vm_snapshot_instructions_buffer = NULL;
|
|
intptr_t vm_snapshot_instructions_size = 0;
|
|
uint8_t* isolate_snapshot_data_buffer = NULL;
|
|
intptr_t isolate_snapshot_data_size = 0;
|
|
uint8_t* isolate_snapshot_instructions_buffer = NULL;
|
|
intptr_t isolate_snapshot_instructions_size = 0;
|
|
|
|
// First create a snapshot.
|
|
result = Dart_CreateCoreJITSnapshotAsBlobs(
|
|
&vm_snapshot_data_buffer, &vm_snapshot_data_size,
|
|
&vm_snapshot_instructions_buffer, &vm_snapshot_instructions_size,
|
|
&isolate_snapshot_data_buffer, &isolate_snapshot_data_size,
|
|
&isolate_snapshot_instructions_buffer,
|
|
&isolate_snapshot_instructions_size);
|
|
CHECK_RESULT(result);
|
|
|
|
// Now write the vm isolate and isolate snapshots out to the
|
|
// specified file and exit.
|
|
WriteFile(vm_snapshot_data_filename, vm_snapshot_data_buffer,
|
|
vm_snapshot_data_size);
|
|
WriteFile(vm_snapshot_instructions_filename, vm_snapshot_instructions_buffer,
|
|
vm_snapshot_instructions_size);
|
|
WriteFile(isolate_snapshot_data_filename, isolate_snapshot_data_buffer,
|
|
isolate_snapshot_data_size);
|
|
WriteFile(isolate_snapshot_instructions_filename,
|
|
isolate_snapshot_instructions_buffer,
|
|
isolate_snapshot_instructions_size);
|
|
}
|
|
|
|
static void CreateAndWriteScriptSnapshot() {
|
|
ASSERT(snapshot_kind == kScript);
|
|
ASSERT(script_snapshot_filename != NULL);
|
|
|
|
// First create a snapshot.
|
|
uint8_t* buffer = NULL;
|
|
intptr_t size = 0;
|
|
Dart_Handle result = Dart_CreateScriptSnapshot(&buffer, &size);
|
|
CHECK_RESULT(result);
|
|
|
|
// Now write it out to the specified file.
|
|
WriteFile(script_snapshot_filename, buffer, size);
|
|
}
|
|
|
|
static void StreamingWriteCallback(void* callback_data,
|
|
const uint8_t* buffer,
|
|
intptr_t size) {
|
|
File* file = reinterpret_cast<File*>(callback_data);
|
|
if (!file->WriteFully(buffer, size)) {
|
|
Log::PrintErr("Error: Unable to write snapshot file\n\n");
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
exit(kErrorExitCode);
|
|
}
|
|
}
|
|
|
|
static std::unique_ptr<MappedMemory> MapFile(const char* filename,
|
|
File::MapType type,
|
|
const uint8_t** buffer) {
|
|
File* file = File::Open(NULL, filename, File::kRead);
|
|
if (file == NULL) {
|
|
Log::PrintErr("Failed to open: %s\n", filename);
|
|
exit(kErrorExitCode);
|
|
}
|
|
RefCntReleaseScope<File> rs(file);
|
|
intptr_t length = file->Length();
|
|
if (length == 0) {
|
|
// Can't map an empty file.
|
|
*buffer = NULL;
|
|
return NULL;
|
|
}
|
|
MappedMemory* mapping = file->Map(type, 0, length);
|
|
if (mapping == NULL) {
|
|
Log::PrintErr("Failed to read: %s\n", filename);
|
|
exit(kErrorExitCode);
|
|
}
|
|
*buffer = reinterpret_cast<const uint8_t*>(mapping->address());
|
|
return std::unique_ptr<MappedMemory>(mapping);
|
|
}
|
|
|
|
static void CreateAndWritePrecompiledSnapshot(
|
|
Dart_QualifiedFunctionName* standalone_entry_points) {
|
|
ASSERT(IsSnapshottingForPrecompilation());
|
|
Dart_Handle result;
|
|
|
|
// Precompile with specified embedder entry points
|
|
result = Dart_Precompile(standalone_entry_points);
|
|
CHECK_RESULT(result);
|
|
|
|
// Create a precompiled snapshot.
|
|
bool as_assembly = assembly_filename != NULL;
|
|
if (as_assembly) {
|
|
ASSERT(snapshot_kind == kAppAOTAssembly);
|
|
File* file = OpenFile(assembly_filename);
|
|
RefCntReleaseScope<File> rs(file);
|
|
result = Dart_CreateAppAOTSnapshotAsAssembly(StreamingWriteCallback, file);
|
|
CHECK_RESULT(result);
|
|
} else {
|
|
ASSERT(snapshot_kind == kAppAOTBlobs);
|
|
|
|
const uint8_t* shared_data = NULL;
|
|
const uint8_t* shared_instructions = NULL;
|
|
std::unique_ptr<MappedMemory> mapped_shared_data;
|
|
std::unique_ptr<MappedMemory> mapped_shared_instructions;
|
|
if (shared_data_filename != NULL) {
|
|
mapped_shared_data =
|
|
MapFile(shared_data_filename, File::kReadOnly, &shared_data);
|
|
}
|
|
if (shared_instructions_filename != NULL) {
|
|
mapped_shared_instructions = MapFile(
|
|
shared_instructions_filename, File::kReadOnly, &shared_instructions);
|
|
}
|
|
|
|
uint8_t* vm_snapshot_data_buffer = NULL;
|
|
intptr_t vm_snapshot_data_size = 0;
|
|
uint8_t* vm_snapshot_instructions_buffer = NULL;
|
|
intptr_t vm_snapshot_instructions_size = 0;
|
|
uint8_t* isolate_snapshot_data_buffer = NULL;
|
|
intptr_t isolate_snapshot_data_size = 0;
|
|
uint8_t* isolate_snapshot_instructions_buffer = NULL;
|
|
intptr_t isolate_snapshot_instructions_size = 0;
|
|
result = Dart_CreateAppAOTSnapshotAsBlobs(
|
|
&vm_snapshot_data_buffer, &vm_snapshot_data_size,
|
|
&vm_snapshot_instructions_buffer, &vm_snapshot_instructions_size,
|
|
&isolate_snapshot_data_buffer, &isolate_snapshot_data_size,
|
|
&isolate_snapshot_instructions_buffer,
|
|
&isolate_snapshot_instructions_size, shared_data, shared_instructions);
|
|
CHECK_RESULT(result);
|
|
|
|
WriteFile(vm_snapshot_data_filename, vm_snapshot_data_buffer,
|
|
vm_snapshot_data_size);
|
|
WriteFile(vm_snapshot_instructions_filename,
|
|
vm_snapshot_instructions_buffer, vm_snapshot_instructions_size);
|
|
WriteFile(isolate_snapshot_data_filename, isolate_snapshot_data_buffer,
|
|
isolate_snapshot_data_size);
|
|
WriteFile(isolate_snapshot_instructions_filename,
|
|
isolate_snapshot_instructions_buffer,
|
|
isolate_snapshot_instructions_size);
|
|
}
|
|
|
|
// Serialize obfuscation map if requested.
|
|
if (obfuscation_map_filename != NULL) {
|
|
ASSERT(obfuscate);
|
|
uint8_t* buffer = NULL;
|
|
intptr_t size = 0;
|
|
result = Dart_GetObfuscationMap(&buffer, &size);
|
|
CHECK_RESULT(result);
|
|
WriteFile(obfuscation_map_filename, buffer, size);
|
|
}
|
|
}
|
|
|
|
static void SetupForUriResolution() {
|
|
// Set up the library tag handler for this isolate.
|
|
Dart_Handle result = Dart_SetLibraryTagHandler(Loader::LibraryTagHandler);
|
|
if (Dart_IsError(result)) {
|
|
Log::PrintErr("%s\n", Dart_GetError(result));
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
exit(kErrorExitCode);
|
|
}
|
|
// This is a generic dart snapshot which needs builtin library setup.
|
|
Dart_Handle library =
|
|
LoadGenericSnapshotCreationScript(Builtin::kBuiltinLibrary);
|
|
CHECK_RESULT(library);
|
|
}
|
|
|
|
static void SetupForGenericSnapshotCreation() {
|
|
SetupForUriResolution();
|
|
|
|
Dart_Handle library = LoadGenericSnapshotCreationScript(Builtin::kIOLibrary);
|
|
CHECK_RESULT(library);
|
|
Dart_Handle standalone_library =
|
|
LoadGenericSnapshotCreationScript(Builtin::kCLILibrary);
|
|
CHECK_RESULT(standalone_library);
|
|
Dart_Handle result = Dart_FinalizeLoading(false);
|
|
if (Dart_IsError(result)) {
|
|
const char* err_msg = Dart_GetError(library);
|
|
Log::PrintErr("Errors encountered while loading: %s\n", err_msg);
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
exit(kErrorExitCode);
|
|
}
|
|
}
|
|
|
|
static Dart_Isolate CreateServiceIsolate(const char* script_uri,
|
|
const char* main,
|
|
const char* package_root,
|
|
const char* package_config,
|
|
Dart_IsolateFlags* flags,
|
|
void* data,
|
|
char** error) {
|
|
IsolateData* isolate_data =
|
|
new IsolateData(script_uri, package_root, package_config, NULL);
|
|
Dart_Isolate isolate = NULL;
|
|
isolate = Dart_CreateIsolate(script_uri, main, isolate_snapshot_data,
|
|
isolate_snapshot_instructions, NULL, NULL, flags,
|
|
isolate_data, error);
|
|
|
|
if (isolate == NULL) {
|
|
Log::PrintErr("Error: Could not create service isolate\n");
|
|
return NULL;
|
|
}
|
|
|
|
Dart_EnterScope();
|
|
if (!Dart_IsServiceIsolate(isolate)) {
|
|
Log::PrintErr("Error: We only expect to create the service isolate\n");
|
|
return NULL;
|
|
}
|
|
Dart_Handle result = Dart_SetLibraryTagHandler(Loader::LibraryTagHandler);
|
|
if (Dart_IsError(result)) {
|
|
Log::PrintErr("Error: Could not set tag handler for service isolate\n");
|
|
return NULL;
|
|
}
|
|
// Setup the native resolver.
|
|
Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary);
|
|
Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
|
|
Builtin::LoadAndCheckLibrary(Builtin::kCLILibrary);
|
|
|
|
ASSERT(Dart_IsServiceIsolate(isolate));
|
|
// Load embedder specific bits and return. Will not start http server.
|
|
if (!VmService::Setup("127.0.0.1", -1, false /* running_precompiled */,
|
|
false /* server dev mode */, false /* trace_loading */,
|
|
true /* deterministic */)) {
|
|
*error = strdup(VmService::GetErrorMessage());
|
|
return NULL;
|
|
}
|
|
Dart_ExitScope();
|
|
Dart_ExitIsolate();
|
|
return isolate;
|
|
}
|
|
|
|
static int GenerateSnapshotFromKernel(const uint8_t* kernel_buffer,
|
|
intptr_t kernel_buffer_size) {
|
|
ASSERT(SnapshotKindAllowedFromKernel());
|
|
|
|
char* error = NULL;
|
|
IsolateData* isolate_data = new IsolateData(NULL, commandline_package_root,
|
|
commandline_packages_file, NULL);
|
|
if ((dependencies_filename != NULL) || print_dependencies) {
|
|
isolate_data->set_dependencies(new MallocGrowableArray<char*>());
|
|
}
|
|
|
|
Dart_IsolateFlags isolate_flags;
|
|
Dart_IsolateFlagsInitialize(&isolate_flags);
|
|
|
|
Dart_QualifiedFunctionName* entry_points = NULL;
|
|
if (IsSnapshottingForPrecompilation()) {
|
|
entry_points = ParseEntryPointsManifestIfPresent();
|
|
isolate_flags.obfuscate = obfuscate;
|
|
isolate_flags.entry_points = entry_points;
|
|
}
|
|
|
|
// We need to capture the vmservice library in the core snapshot, so load it
|
|
// in the main isolate as well.
|
|
isolate_flags.load_vmservice_library = true;
|
|
Dart_Isolate isolate = Dart_CreateIsolateFromKernel(
|
|
NULL, NULL, kernel_buffer, kernel_buffer_size, &isolate_flags,
|
|
isolate_data, &error);
|
|
if (isolate == NULL) {
|
|
delete isolate_data;
|
|
Log::PrintErr("%s\n", error);
|
|
free(error);
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
Dart_EnterScope();
|
|
Dart_Handle result = Dart_SetEnvironmentCallback(EnvironmentCallback);
|
|
CHECK_RESULT(result);
|
|
|
|
switch (snapshot_kind) {
|
|
case kAppAOTBlobs:
|
|
case kAppAOTAssembly: {
|
|
// The root library has to be set to generate AOT snapshots.
|
|
// If the input dill file has a root library, then Dart_LoadScript will
|
|
// ignore this dummy uri and set the root library to the one reported in
|
|
// the dill file. Since dill files are not dart script files,
|
|
// trying to resolve the root library URI based on the dill file name
|
|
// would not help.
|
|
//
|
|
// If the input dill file does not have a root library, then
|
|
// Dart_LoadScript will error.
|
|
Dart_Handle library =
|
|
Dart_LoadScriptFromKernel(kernel_buffer, kernel_buffer_size);
|
|
if (Dart_IsError(library)) {
|
|
Log::PrintErr(
|
|
"Unable to load root library from the input dill file.\n");
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
CreateAndWritePrecompiledSnapshot(entry_points);
|
|
|
|
CreateAndWriteDependenciesFile();
|
|
|
|
CleanupEntryPointsCollection(entry_points);
|
|
|
|
break;
|
|
}
|
|
case kCore:
|
|
CreateAndWriteCoreSnapshot();
|
|
break;
|
|
case kCoreJIT:
|
|
LoadCompilationTrace();
|
|
CreateAndWriteCoreJITSnapshot();
|
|
break;
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
error = Dart_Cleanup();
|
|
if (error != NULL) {
|
|
Log::PrintErr("VM cleanup failed: %s\n", error);
|
|
free(error);
|
|
}
|
|
EventHandler::Stop();
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
const int EXTRA_VM_ARGUMENTS = 2;
|
|
CommandLineOptions vm_options(argc + EXTRA_VM_ARGUMENTS);
|
|
|
|
// Initialize the URL mapping array.
|
|
CommandLineOptions cmdline_url_mapping(argc);
|
|
DartUtils::url_mapping = &cmdline_url_mapping;
|
|
|
|
// Initialize the entrypoints array.
|
|
CommandLineOptions entry_points_files_array(argc);
|
|
entry_points_files = &entry_points_files_array;
|
|
|
|
// Parse command line arguments.
|
|
if (ParseArguments(argc, argv, &vm_options, &app_script_name) < 0) {
|
|
PrintUsage();
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
// Sniff the script to check if it is actually a dill file.
|
|
uint8_t* kernel_buffer = NULL;
|
|
intptr_t kernel_buffer_size = NULL;
|
|
if (app_script_name != NULL) {
|
|
dfe.ReadScript(app_script_name, &kernel_buffer, &kernel_buffer_size);
|
|
}
|
|
if (kernel_buffer != NULL && !SnapshotKindAllowedFromKernel()) {
|
|
// TODO(sivachandra): Add check for the kernel program format (incremental
|
|
// vs batch).
|
|
Log::PrintErr(
|
|
"Can only generate core or aot snapshots from a kernel file.\n");
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
if (!Platform::Initialize()) {
|
|
Log::PrintErr("Initialization failed\n");
|
|
return kErrorExitCode;
|
|
}
|
|
Console::SaveConfig();
|
|
Thread::InitOnce();
|
|
Loader::InitOnce();
|
|
DartUtils::SetOriginalWorkingDirectory();
|
|
// Start event handler.
|
|
TimerUtils::InitOnce();
|
|
EventHandler::Start();
|
|
|
|
#if !defined(PRODUCT)
|
|
// Constant true in PRODUCT mode.
|
|
vm_options.AddArgument("--load_deferred_eagerly");
|
|
#endif
|
|
|
|
if (IsSnapshottingForPrecompilation()) {
|
|
vm_options.AddArgument("--precompilation");
|
|
}
|
|
if (snapshot_kind == kCoreJIT) {
|
|
vm_options.AddArgument("--fields_may_be_reset");
|
|
vm_options.AddArgument("--link_natives_lazily");
|
|
#if !defined(PRODUCT)
|
|
vm_options.AddArgument("--collect_code=false");
|
|
#endif
|
|
}
|
|
|
|
char* error = Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
|
|
if (error != NULL) {
|
|
Log::PrintErr("Setting VM flags failed: %s\n", error);
|
|
free(error);
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
// Initialize the Dart VM.
|
|
// Note: We don't expect isolates to be created from dart code during
|
|
// core library snapshot generation. However for the case when a full
|
|
// snasphot is generated from a script (app_script_name != NULL) we will
|
|
// need the service isolate to resolve URI and load code.
|
|
|
|
Dart_InitializeParams init_params;
|
|
memset(&init_params, 0, sizeof(init_params));
|
|
init_params.version = DART_INITIALIZE_PARAMS_CURRENT_VERSION;
|
|
if (app_script_name != NULL && kernel_buffer == NULL) {
|
|
// We need the service isolate to load script files.
|
|
// When generating snapshots from a kernel program, we do not need to load
|
|
// any script files.
|
|
init_params.create = CreateServiceIsolate;
|
|
}
|
|
init_params.file_open = DartUtils::OpenFile;
|
|
init_params.file_read = DartUtils::ReadFile;
|
|
init_params.file_write = DartUtils::WriteFile;
|
|
init_params.file_close = DartUtils::CloseFile;
|
|
init_params.entropy_source = DartUtils::EntropySource;
|
|
init_params.start_kernel_isolate = false;
|
|
|
|
std::unique_ptr<MappedMemory> mapped_vm_snapshot_data;
|
|
std::unique_ptr<MappedMemory> mapped_vm_snapshot_instructions;
|
|
std::unique_ptr<MappedMemory> mapped_isolate_snapshot_data;
|
|
std::unique_ptr<MappedMemory> mapped_isolate_snapshot_instructions;
|
|
if (snapshot_kind == kScript) {
|
|
mapped_vm_snapshot_data =
|
|
MapFile(vm_snapshot_data_filename, File::kReadOnly,
|
|
&init_params.vm_snapshot_data);
|
|
|
|
if (vm_snapshot_instructions_filename != NULL) {
|
|
mapped_vm_snapshot_instructions =
|
|
MapFile(vm_snapshot_instructions_filename, File::kReadExecute,
|
|
&init_params.vm_snapshot_instructions);
|
|
}
|
|
|
|
mapped_isolate_snapshot_data =
|
|
MapFile(isolate_snapshot_data_filename, File::kReadOnly,
|
|
&isolate_snapshot_data);
|
|
|
|
if (isolate_snapshot_instructions_filename != NULL) {
|
|
mapped_isolate_snapshot_instructions =
|
|
MapFile(isolate_snapshot_instructions_filename, File::kReadExecute,
|
|
&isolate_snapshot_instructions);
|
|
}
|
|
}
|
|
|
|
error = Dart_Initialize(&init_params);
|
|
if (error != NULL) {
|
|
Log::PrintErr("VM initialization failed: %s\n", error);
|
|
free(error);
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
if (kernel_buffer != NULL) {
|
|
return GenerateSnapshotFromKernel(kernel_buffer, kernel_buffer_size);
|
|
}
|
|
|
|
Dart_IsolateFlags flags;
|
|
Dart_IsolateFlagsInitialize(&flags);
|
|
|
|
Dart_QualifiedFunctionName* entry_points =
|
|
ParseEntryPointsManifestIfPresent();
|
|
|
|
IsolateData* isolate_data = new IsolateData(NULL, commandline_package_root,
|
|
commandline_packages_file, NULL);
|
|
Dart_Isolate isolate = Dart_CreateIsolate(NULL, NULL, isolate_snapshot_data,
|
|
isolate_snapshot_instructions, NULL,
|
|
NULL, NULL, isolate_data, &error);
|
|
if (isolate == NULL) {
|
|
Log::PrintErr("Error: %s\n", error);
|
|
free(error);
|
|
exit(kErrorExitCode);
|
|
}
|
|
|
|
Dart_Handle result;
|
|
Dart_Handle library;
|
|
Dart_EnterScope();
|
|
|
|
if (snapshot_kind == kVMAOTAssembly) {
|
|
File* file = OpenFile(assembly_filename);
|
|
RefCntReleaseScope<File> rs(file);
|
|
result = Dart_CreateVMAOTSnapshotAsAssembly(StreamingWriteCallback, file);
|
|
CHECK_RESULT(result);
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
return 0;
|
|
}
|
|
|
|
result = Dart_SetEnvironmentCallback(EnvironmentCallback);
|
|
CHECK_RESULT(result);
|
|
|
|
// Load up the script before a snapshot is created.
|
|
if (app_script_name != NULL) {
|
|
// This is the case of a custom embedder (e.g: dartium) trying to
|
|
// create a full snapshot. The current isolate is set up so that we can
|
|
// invoke the dart uri resolution code like _resolveURI. App script is
|
|
// loaded into a separate isolate.
|
|
SetupForUriResolution();
|
|
|
|
// Prepare builtin and its dependent libraries for use to resolve URIs.
|
|
// Set up various closures, e.g: printing, timers etc.
|
|
// Set up 'package root' for URI resolution.
|
|
result = DartUtils::PrepareForScriptLoading(false, false);
|
|
CHECK_RESULT(result);
|
|
|
|
// Set up the load port provided by the service isolate so that we can
|
|
// load scripts.
|
|
result = DartUtils::SetupServiceLoadPort();
|
|
CHECK_RESULT(result);
|
|
|
|
// Setup package root if specified.
|
|
result = DartUtils::SetupPackageRoot(commandline_package_root,
|
|
commandline_packages_file);
|
|
CHECK_RESULT(result);
|
|
|
|
UriResolverIsolateScope::isolate = isolate;
|
|
Dart_ExitScope();
|
|
Dart_ExitIsolate();
|
|
|
|
// Now we create an isolate into which we load all the code that needs to
|
|
// be in the snapshot.
|
|
isolate_data = new IsolateData(app_script_name, commandline_package_root,
|
|
commandline_packages_file, NULL);
|
|
if ((dependencies_filename != NULL) || print_dependencies) {
|
|
isolate_data->set_dependencies(new MallocGrowableArray<char*>());
|
|
}
|
|
|
|
if (IsSnapshottingForPrecompilation()) {
|
|
flags.obfuscate = obfuscate;
|
|
flags.entry_points = entry_points;
|
|
}
|
|
|
|
Dart_Isolate isolate = NULL;
|
|
isolate = Dart_CreateIsolate(NULL, NULL, isolate_snapshot_data,
|
|
isolate_snapshot_instructions, NULL, NULL,
|
|
&flags, isolate_data, &error);
|
|
if (isolate == NULL) {
|
|
Log::PrintErr("%s\n", error);
|
|
free(error);
|
|
exit(kErrorExitCode);
|
|
}
|
|
Dart_EnterScope();
|
|
result = Dart_SetEnvironmentCallback(EnvironmentCallback);
|
|
CHECK_RESULT(result);
|
|
|
|
// Set up the library tag handler in such a manner that it will use the
|
|
// URL mapping specified on the command line to load the libraries.
|
|
result = Dart_SetLibraryTagHandler(CreateSnapshotLibraryTagHandler);
|
|
CHECK_RESULT(result);
|
|
|
|
if (commandline_packages_file != NULL) {
|
|
AddDependency(commandline_packages_file);
|
|
}
|
|
|
|
ASSERT(kernel_buffer == NULL);
|
|
|
|
// Load any libraries named in the entry points. Do this before loading the
|
|
// user's script to ensure conditional imports see the embedder-specific
|
|
// dart: libraries.
|
|
LoadEntryPoints(entry_points);
|
|
|
|
// Load the specified script.
|
|
library = LoadSnapshotCreationScript(app_script_name);
|
|
CHECK_RESULT(library);
|
|
|
|
ImportNativeEntryPointLibrariesIntoRoot(entry_points);
|
|
|
|
// Ensure that we mark all libraries as loaded.
|
|
result = Dart_FinalizeLoading(false);
|
|
CHECK_RESULT(result);
|
|
|
|
LoadCompilationTrace();
|
|
|
|
if (!dependencies_only) {
|
|
switch (snapshot_kind) {
|
|
case kCore:
|
|
CreateAndWriteCoreSnapshot();
|
|
break;
|
|
case kCoreJIT:
|
|
CreateAndWriteCoreJITSnapshot();
|
|
break;
|
|
case kScript:
|
|
CreateAndWriteScriptSnapshot();
|
|
break;
|
|
case kAppAOTBlobs:
|
|
case kAppAOTAssembly:
|
|
CreateAndWritePrecompiledSnapshot(entry_points);
|
|
break;
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
}
|
|
|
|
CreateAndWriteDependenciesFile();
|
|
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
|
|
CleanupEntryPointsCollection(entry_points);
|
|
|
|
Dart_EnterIsolate(UriResolverIsolateScope::isolate);
|
|
Dart_ShutdownIsolate();
|
|
} else {
|
|
SetupForGenericSnapshotCreation();
|
|
LoadCompilationTrace();
|
|
switch (snapshot_kind) {
|
|
case kCore:
|
|
CreateAndWriteCoreSnapshot();
|
|
break;
|
|
case kCoreJIT:
|
|
CreateAndWriteCoreJITSnapshot();
|
|
break;
|
|
default:
|
|
UNREACHABLE();
|
|
break;
|
|
}
|
|
|
|
Dart_ExitScope();
|
|
Dart_ShutdownIsolate();
|
|
}
|
|
error = Dart_Cleanup();
|
|
if (error != NULL) {
|
|
Log::PrintErr("VM cleanup failed: %s\n", error);
|
|
free(error);
|
|
}
|
|
EventHandler::Stop();
|
|
return 0;
|
|
}
|
|
|
|
} // namespace bin
|
|
} // namespace dart
|
|
|
|
int main(int argc, char** argv) {
|
|
return dart::bin::main(argc, argv);
|
|
}
|