| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // Generate a snapshot file after loading all the scripts specified on the |
| // command line. |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| |
| #include <cstdarg> |
| |
| #include "include/dart_api.h" |
| |
| #include "bin/builtin.h" |
| #include "bin/dartutils.h" |
| #include "bin/eventhandler.h" |
| #include "bin/file.h" |
| #include "bin/log.h" |
| #include "bin/thread.h" |
| #include "bin/utils.h" |
| #include "bin/vmservice_impl.h" |
| |
| #include "platform/globals.h" |
| |
| |
| namespace dart { |
| namespace bin { |
| |
| #define CHECK_RESULT(result) \ |
| if (Dart_IsError(result)) { \ |
| Log::PrintErr("Error: %s", Dart_GetError(result)); \ |
| Dart_ExitScope(); \ |
| Dart_ShutdownIsolate(); \ |
| exit(255); \ |
| } \ |
| |
| |
| // Global state that indicates whether a snapshot is to be created and |
| // if so which file to write the snapshot into. |
| static const char* vm_isolate_snapshot_filename = NULL; |
| static const char* isolate_snapshot_filename = NULL; |
| static const char* instructions_snapshot_filename = NULL; |
| static const char* embedder_entry_points_manifest = NULL; |
| static const char* package_root = NULL; |
| |
| |
| // Global state which contains a pointer to the script name for which |
| // a snapshot needs to be created (NULL would result in the creation |
| // of a generic snapshot that contains only the corelibs). |
| static char* app_script_name = NULL; |
| |
| |
| // Global state that captures the URL mappings specified on the command line. |
| static CommandLineOptions* url_mapping = NULL; |
| |
| static bool IsValidFlag(const char* name, |
| const char* prefix, |
| intptr_t prefix_length) { |
| intptr_t name_length = strlen(name); |
| return ((name_length > prefix_length) && |
| (strncmp(name, prefix, prefix_length) == 0)); |
| } |
| |
| |
| static const char* ProcessOption(const char* option, const char* name) { |
| const intptr_t length = strlen(name); |
| if (strncmp(option, name, length) == 0) { |
| return (option + length); |
| } |
| return NULL; |
| } |
| |
| |
| static bool ProcessVmIsolateSnapshotOption(const char* option) { |
| const char* name = ProcessOption(option, "--vm_isolate_snapshot="); |
| if (name != NULL) { |
| vm_isolate_snapshot_filename = name; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| static bool ProcessIsolateSnapshotOption(const char* option) { |
| const char* name = ProcessOption(option, "--isolate_snapshot="); |
| if (name != NULL) { |
| isolate_snapshot_filename = name; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| static bool ProcessInstructionsSnapshotOption(const char* option) { |
| const char* name = ProcessOption(option, "--instructions_snapshot="); |
| if (name != NULL) { |
| instructions_snapshot_filename = name; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| static bool ProcessEmbedderEntryPointsManifestOption(const char* option) { |
| const char* name = ProcessOption(option, "--embedder_entry_points_manifest="); |
| if (name != NULL) { |
| embedder_entry_points_manifest = name; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| static bool ProcessPackageRootOption(const char* option) { |
| const char* name = ProcessOption(option, "--package_root="); |
| if (name != NULL) { |
| package_root = name; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| static bool ProcessURLmappingOption(const char* option) { |
| const char* mapping = ProcessOption(option, "--url_mapping="); |
| if (mapping == NULL) { |
| mapping = ProcessOption(option, "--url-mapping="); |
| } |
| if (mapping != NULL) { |
| url_mapping->AddArgument(mapping); |
| return true; |
| } |
| return false; |
| } |
| |
| |
| // Parse out the command line arguments. Returns -1 if the arguments |
| // are incorrect, 0 otherwise. |
| static int ParseArguments(int argc, |
| char** argv, |
| CommandLineOptions* vm_options, |
| char** script_name) { |
| const char* kPrefix = "--"; |
| const intptr_t kPrefixLen = strlen(kPrefix); |
| |
| // Skip the binary name. |
| int i = 1; |
| |
| // Parse out the vm options. |
| while ((i < argc) && IsValidFlag(argv[i], kPrefix, kPrefixLen)) { |
| if (ProcessVmIsolateSnapshotOption(argv[i]) || |
| ProcessIsolateSnapshotOption(argv[i]) || |
| ProcessInstructionsSnapshotOption(argv[i]) || |
| ProcessEmbedderEntryPointsManifestOption(argv[i]) || |
| ProcessURLmappingOption(argv[i]) || |
| ProcessPackageRootOption(argv[i])) { |
| i += 1; |
| continue; |
| } |
| vm_options->AddArgument(argv[i]); |
| i += 1; |
| } |
| |
| // Get the script name. |
| if (i < argc) { |
| *script_name = argv[i]; |
| i += 1; |
| } else { |
| *script_name = NULL; |
| } |
| |
| if (vm_isolate_snapshot_filename == NULL) { |
| Log::PrintErr("No vm isolate snapshot output file specified.\n\n"); |
| return -1; |
| } |
| |
| if (isolate_snapshot_filename == NULL) { |
| Log::PrintErr("No isolate snapshot output file specified.\n\n"); |
| return -1; |
| } |
| |
| if (instructions_snapshot_filename != NULL && |
| embedder_entry_points_manifest == NULL) { |
| Log::PrintErr( |
| "Specifying an instructions snapshot filename indicates precompilation" |
| ". But no embedder entry points manifest was specified.\n\n"); |
| return -1; |
| } |
| |
| if (embedder_entry_points_manifest != NULL && |
| instructions_snapshot_filename == NULL) { |
| Log::PrintErr( |
| "Specifying the embedder entry points manifest indicates " |
| "precompilation. But no instuctions snapshot was specified.\n\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| |
| static bool IsSnapshottingForPrecompilation(void) { |
| return embedder_entry_points_manifest != NULL && |
| instructions_snapshot_filename != NULL; |
| } |
| |
| |
| static void WriteSnapshotFile(const char* filename, |
| const uint8_t* buffer, |
| const intptr_t size) { |
| File* file = File::Open(filename, File::kWriteTruncate); |
| ASSERT(file != NULL); |
| if (!file->WriteFully(buffer, size)) { |
| Log::PrintErr("Error: Failed to write snapshot file.\n\n"); |
| } |
| delete file; |
| } |
| |
| |
| class UriResolverIsolateScope { |
| public: |
| UriResolverIsolateScope() { |
| ASSERT(isolate != NULL); |
| snapshotted_isolate_ = Dart_CurrentIsolate(); |
| Dart_ExitIsolate(); |
| Dart_EnterIsolate(isolate); |
| Dart_EnterScope(); |
| } |
| |
| ~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 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 builtin_lib = |
| Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary); |
| CHECK_RESULT(builtin_lib); |
| |
| Dart_Handle result = DartUtils::ResolveUriInWorkingDirectory( |
| DartUtils::NewString(script_uri), builtin_lib); |
| 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 FilePathFromUri(const char* script_uri) { |
| bool failed = false; |
| char* result_string = NULL; |
| |
| { |
| UriResolverIsolateScope scope; |
| |
| // Run DartUtils::FilePathFromUri in context of uri resolver isolate. |
| Dart_Handle builtin_lib = |
| Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary); |
| CHECK_RESULT(builtin_lib); |
| |
| Dart_Handle result = DartUtils::FilePathFromUri( |
| DartUtils::NewString(script_uri), builtin_lib); |
| 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 ResolveUri(const char* library_uri, const char* uri) { |
| bool failed = false; |
| char* result_string = NULL; |
| |
| { |
| UriResolverIsolateScope scope; |
| |
| // Run DartUtils::ResolveUri in context of uri resolver isolate. |
| Dart_Handle builtin_lib = |
| Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary); |
| CHECK_RESULT(builtin_lib); |
| |
| Dart_Handle result = DartUtils::ResolveUri( |
| DartUtils::NewString(library_uri), |
| DartUtils::NewString(uri), |
| builtin_lib); |
| 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 Builtin::BuiltinLibraryId BuiltinId(const char* url) { |
| if (DartUtils::IsDartBuiltinLibURL(url)) { |
| return Builtin::kBuiltinLibrary; |
| } |
| if (DartUtils::IsDartIOLibURL(url)) { |
| return Builtin::kIOLibrary; |
| } |
| return Builtin::kInvalidLibrary; |
| } |
| |
| |
| 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( |
| url_mapping, 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_mapping, |
| 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 ResolveUri(library_url_string, url_string); |
| } |
| |
| 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) { |
| return Dart_LoadSource(library, url, |
| Builtin::PartSource(libraryBuiltinId, url_string), 0, 0); |
| } |
| 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; |
| } |
| } |
| |
| // Get the file path out of the url. |
| Dart_Handle file_path = FilePathFromUri( |
| DartUtils::GetStringValue(resolved_url)); |
| if (Dart_IsError(file_path)) { |
| return file_path; |
| } |
| const char* raw_path = DartUtils::GetStringValue(file_path); |
| Dart_Handle source = DartUtils::ReadStringFromFile(raw_path); |
| if (Dart_IsError(source)) { |
| return source; |
| } |
| if (tag == Dart_kImportTag) { |
| return Dart_LoadLibrary(url, source, 0, 0); |
| } else { |
| ASSERT(tag == Dart_kSourceTag); |
| return Dart_LoadSource(library, url, source, 0, 0); |
| } |
| } |
| |
| |
| static Dart_Handle LoadSnapshotCreationScript(const char* script_name) { |
| Dart_Handle resolved_script_uri = ResolveUriInWorkingDirectory(script_name); |
| if (Dart_IsError(resolved_script_uri)) { |
| return resolved_script_uri; |
| } |
| Dart_Handle script_path = FilePathFromUri( |
| DartUtils::GetStringValue(resolved_script_uri)); |
| if (Dart_IsError(script_path)) { |
| return script_path; |
| } |
| Dart_Handle source = DartUtils::ReadStringFromFile( |
| DartUtils::GetStringValue(script_path)); |
| if (Dart_IsError(source)) { |
| return source; |
| } |
| return Dart_LoadScript(resolved_script_uri, 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 PrintUsage() { |
| Log::PrintErr( |
| "Usage: \n" |
| " gen_snapshot [<vm-flags>] [<options>] [<dart-script-file>] \n" |
| " \n" |
| " Writes a snapshot of <dart-script-file> to the specified snapshot files. \n" |
| " If no <dart-script-file> is passed, a generic snapshot of all the corelibs\n" |
| " is created. It is required to specify the VM isolate snapshot and the \n" |
| " isolate snapshot. The other flags are related to precompilation and are \n" |
| " optional. \n" |
| " \n" |
| " Precompilation: \n" |
| " In order to configure the snapshotter for precompilation, both the \n" |
| " instructions snapshot and embedder entry points manifest must be \n" |
| " specified. Assembly for the target architecture will be dumped into the \n" |
| " instructions snapshot. This must be linked into the target binary in a \n" |
| " separate step. The embedder entry points manifest lists the standalone \n" |
| " entry points into the VM. Not specifying these will cause the tree shaker \n" |
| " to disregard the same as being used. The format of this manifest is as \n" |
| " follows. Each line in the manifest is a comma separated list of three \n" |
| " elements. The first entry is the library URI, the second entry is the \n" |
| " class name and the final entry the function name. The file must be \n" |
| " terminated with a newline charater. \n" |
| " \n" |
| " Example: \n" |
| " dart:something,SomeClass,doSomething \n" |
| " \n" |
| " Supported options: \n" |
| " --vm_isolate_snapshot=<file> A full snapshot is a compact \n" |
| " --isolate_snapshot=<file> representation of the dart vm isolate \n" |
| " heap and dart isolate heap states. \n" |
| " Both these options are required \n" |
| " \n" |
| " --package_root=<path> Where to find packages, that is, \n" |
| " package:... imports. \n" |
| " \n" |
| " --url_mapping=<mapping> Uses the URL mapping(s) specified on \n" |
| " the command line to load the \n" |
| " libraries. \n" |
| " \n" |
| " --instructions_snapshot=<file> (Precompilation only) Contains the \n" |
| " assembly that must be linked into \n" |
| " the target binary \n" |
| " \n" |
| " --embedder_entry_points_manifest=<file> (Precompilation only) Contains \n" |
| " the stanalone embedder entry points\n"); |
| } |
| |
| |
| static void VerifyLoaded(Dart_Handle library) { |
| if (Dart_IsError(library)) { |
| const char* err_msg = Dart_GetError(library); |
| Log::PrintErr("Errors encountered while loading: %s\n", err_msg); |
| Dart_ExitScope(); |
| Dart_ShutdownIsolate(); |
| exit(255); |
| } |
| ASSERT(Dart_IsLibrary(library)); |
| } |
| |
| |
| static const char StubNativeFunctionName[] = "StubNativeFunction"; |
| |
| |
| void StubNativeFunction(Dart_NativeArguments arguments) { |
| // This is a stub function for the resolver |
| UNREACHABLE(); |
| } |
| |
| |
| static Dart_NativeFunction StubNativeLookup(Dart_Handle name, |
| int argument_count, |
| bool* auto_setup_scope) { |
| return &StubNativeFunction; |
| } |
| |
| |
| static const uint8_t* StubNativeSymbol(Dart_NativeFunction nf) { |
| return reinterpret_cast<const uint8_t *>(StubNativeFunctionName); |
| } |
| |
| |
| static void SetupStubNativeResolver(size_t lib_index, |
| const Dart_QualifiedFunctionName* entry) { |
| // TODO(24686): Remove this. |
| 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, script_handle, 0, 0); |
| DART_CHECK_VALID(loaded); |
| |
| // Do a fresh lookup |
| library = Dart_LookupLibrary(library_string); |
| } |
| |
| DART_CHECK_VALID(library); |
| Dart_Handle result = Dart_SetNativeResolver(library, |
| &StubNativeLookup, |
| &StubNativeSymbol); |
| DART_CHECK_VALID(result); |
| } |
| |
| |
| 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; |
| } |
| 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 SetupStubNativeResolversForPrecompilation( |
| 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; |
| } |
| // Setup stub resolvers on loaded libraries |
| SetupStubNativeResolver(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; |
| } |
| |
| 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* ParseEntryPointsManifestFile( |
| const char* path) { |
| if (path == NULL) { |
| return NULL; |
| } |
| |
| FILE* file = fopen(path, "r"); |
| |
| if (file == NULL) { |
| Log::PrintErr("Could not open entry points manifest file\n"); |
| return NULL; |
| } |
| |
| // Parse the file once but don't store the results. This is done to first |
| // determine the number of entries in the manifest |
| int64_t entry_count = ParseEntryPointsManifestLines(file, NULL); |
| |
| if (entry_count <= 0) { |
| Log::PrintErr( |
| "Manifest file specified is invalid or contained no entries\n"); |
| fclose(file); |
| return NULL; |
| } |
| |
| rewind(file); |
| |
| // 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 = ParseEntryPointsManifestLines(file, entries); |
| ASSERT(parsed_entry_count == entry_count); |
| |
| fclose(file); |
| |
| // The entries allocation must be explicitly cleaned up via |
| // |CleanupEntryPointsCollection| |
| return entries; |
| } |
| |
| |
| static Dart_QualifiedFunctionName* ParseEntryPointsManifestIfPresent() { |
| Dart_QualifiedFunctionName* entries = |
| ParseEntryPointsManifestFile(embedder_entry_points_manifest); |
| if (entries == NULL && IsSnapshottingForPrecompilation()) { |
| Log::PrintErr( |
| "Could not find native embedder entry points during precompilation\n"); |
| exit(255); |
| } |
| return entries; |
| } |
| |
| |
| static void CreateAndWriteSnapshot() { |
| ASSERT(!IsSnapshottingForPrecompilation()); |
| Dart_Handle result; |
| uint8_t* vm_isolate_buffer = NULL; |
| intptr_t vm_isolate_size = 0; |
| uint8_t* isolate_buffer = NULL; |
| intptr_t isolate_size = 0; |
| |
| // First create a snapshot. |
| result = Dart_CreateSnapshot(&vm_isolate_buffer, |
| &vm_isolate_size, |
| &isolate_buffer, |
| &isolate_size); |
| CHECK_RESULT(result); |
| |
| // Now write the vm isolate and isolate snapshots out to the |
| // specified file and exit. |
| WriteSnapshotFile(vm_isolate_snapshot_filename, |
| vm_isolate_buffer, |
| vm_isolate_size); |
| WriteSnapshotFile(isolate_snapshot_filename, |
| isolate_buffer, |
| isolate_size); |
| Dart_ExitScope(); |
| |
| // Shutdown the isolate. |
| Dart_ShutdownIsolate(); |
| } |
| |
| |
| static void CreateAndWritePrecompiledSnapshot( |
| Dart_QualifiedFunctionName* standalone_entry_points) { |
| ASSERT(IsSnapshottingForPrecompilation()); |
| Dart_Handle result; |
| uint8_t* vm_isolate_buffer = NULL; |
| intptr_t vm_isolate_size = 0; |
| uint8_t* isolate_buffer = NULL; |
| intptr_t isolate_size = 0; |
| uint8_t* instructions_buffer = NULL; |
| intptr_t instructions_size = 0; |
| |
| // Precompile with specified embedder entry points |
| result = Dart_Precompile(standalone_entry_points, true); |
| CHECK_RESULT(result); |
| |
| // Create a precompiled snapshot. This gives us an instruction buffer with |
| // machine code |
| result = Dart_CreatePrecompiledSnapshot(&vm_isolate_buffer, |
| &vm_isolate_size, |
| &isolate_buffer, |
| &isolate_size, |
| &instructions_buffer, |
| &instructions_size); |
| CHECK_RESULT(result); |
| |
| // Now write the vm isolate, isolate and instructions snapshots out to the |
| // specified files and exit. |
| WriteSnapshotFile(vm_isolate_snapshot_filename, |
| vm_isolate_buffer, |
| vm_isolate_size); |
| WriteSnapshotFile(isolate_snapshot_filename, |
| isolate_buffer, |
| isolate_size); |
| WriteSnapshotFile(instructions_snapshot_filename, |
| instructions_buffer, |
| instructions_size); |
| Dart_ExitScope(); |
| |
| // Shutdown the isolate. |
| Dart_ShutdownIsolate(); |
| } |
| |
| |
| static void SetupForUriResolution() { |
| // Set up the library tag handler for this isolate. |
| Dart_Handle result = Dart_SetLibraryTagHandler(DartUtils::LibraryTagHandler); |
| if (Dart_IsError(result)) { |
| Log::PrintErr("%s", Dart_GetError(result)); |
| Dart_ExitScope(); |
| Dart_ShutdownIsolate(); |
| exit(255); |
| } |
| // This is a generic dart snapshot which needs builtin library setup. |
| Dart_Handle library = |
| LoadGenericSnapshotCreationScript(Builtin::kBuiltinLibrary); |
| VerifyLoaded(library); |
| } |
| |
| |
| static void SetupForGenericSnapshotCreation() { |
| SetupForUriResolution(); |
| |
| Dart_Handle library = LoadGenericSnapshotCreationScript(Builtin::kIOLibrary); |
| VerifyLoaded(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(255); |
| } |
| } |
| |
| |
| 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) { |
| Dart_Isolate isolate = NULL; |
| isolate = Dart_CreateIsolate(script_uri, |
| main, |
| NULL, |
| NULL, |
| NULL, |
| error); |
| |
| if (isolate == NULL) { |
| Log::PrintErr("Error: Could not create service isolate"); |
| return NULL; |
| } |
| |
| Dart_EnterScope(); |
| if (!Dart_IsServiceIsolate(isolate)) { |
| Log::PrintErr("Error: We only expect to create the service isolate"); |
| return NULL; |
| } |
| Dart_Handle result = Dart_SetLibraryTagHandler(DartUtils::LibraryTagHandler); |
| // Setup the native resolver. |
| Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary); |
| Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary); |
| if (Dart_IsError(result)) { |
| Log::PrintErr("Error: Could not set tag handler for service isolate"); |
| return NULL; |
| } |
| CHECK_RESULT(result); |
| 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 */)) { |
| *error = strdup(VmService::GetErrorMessage()); |
| return NULL; |
| } |
| Dart_ExitScope(); |
| Dart_ExitIsolate(); |
| return isolate; |
| } |
| |
| |
| 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 url_mapping_array(argc); |
| url_mapping = &url_mapping_array; |
| |
| // Parse command line arguments. |
| if (ParseArguments(argc, |
| argv, |
| &vm_options, |
| &app_script_name) < 0) { |
| PrintUsage(); |
| return 255; |
| } |
| |
| Thread::InitOnce(); |
| DartUtils::SetOriginalWorkingDirectory(); |
| // Start event handler. |
| TimerUtils::InitOnce(); |
| EventHandler::Start(); |
| |
| vm_options.AddArgument("--load_deferred_eagerly"); |
| // Workaround until issue 21620 is fixed. |
| // (https://github.com/dart-lang/sdk/issues/21620) |
| vm_options.AddArgument("--no-concurrent_sweep"); |
| |
| if (IsSnapshottingForPrecompilation()) { |
| vm_options.AddArgument("--precompilation"); |
| #if TARGET_ARCH_ARM |
| // This is for the iPod Touch 5th Generation (and maybe other older devices) |
| vm_options.AddArgument("--no-use_integer_division"); |
| #endif |
| } |
| |
| Dart_SetVMFlags(vm_options.count(), vm_options.arguments()); |
| |
| // Initialize the Dart VM. |
| // Note: We don't expect isolates to be created from dart code during |
| // snapshot generation. |
| char* error = Dart_Initialize( |
| NULL, |
| NULL, |
| CreateServiceIsolate, |
| NULL, |
| NULL, |
| NULL, |
| DartUtils::OpenFile, |
| DartUtils::ReadFile, |
| DartUtils::WriteFile, |
| DartUtils::CloseFile, |
| DartUtils::EntropySource, |
| NULL); |
| if (error != NULL) { |
| Log::PrintErr("VM initialization failed: %s\n", error); |
| free(error); |
| return 255; |
| } |
| |
| Dart_Isolate isolate = Dart_CreateIsolate( |
| NULL, NULL, NULL, NULL, NULL, &error); |
| if (isolate == NULL) { |
| Log::PrintErr("Error: %s", error); |
| free(error); |
| exit(255); |
| } |
| |
| Dart_Handle result; |
| Dart_Handle library; |
| Dart_EnterScope(); |
| |
| ASSERT(vm_isolate_snapshot_filename != NULL); |
| ASSERT(isolate_snapshot_filename != NULL); |
| // 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(); |
| |
| // Get handle to builtin library. |
| Dart_Handle builtin_lib = |
| Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary); |
| CHECK_RESULT(builtin_lib); |
| |
| // Ensure that we mark all libraries as loaded. |
| result = Dart_FinalizeLoading(false); |
| CHECK_RESULT(result); |
| |
| // Prepare for script loading by setting up the 'print' and 'timer' |
| // closures and setting up 'package root' for URI resolution. |
| result = |
| DartUtils::PrepareForScriptLoading(package_root, |
| NULL, |
| false, |
| false, |
| builtin_lib); |
| CHECK_RESULT(result); |
| Dart_ExitScope(); |
| Dart_ExitIsolate(); |
| |
| UriResolverIsolateScope::isolate = isolate; |
| |
| // Now we create an isolate into which we load all the code that needs to |
| // be in the snapshot. |
| if (Dart_CreateIsolate(NULL, NULL, NULL, NULL, NULL, &error) == NULL) { |
| fprintf(stderr, "%s", error); |
| free(error); |
| exit(255); |
| } |
| Dart_EnterScope(); |
| |
| // 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); |
| |
| Dart_QualifiedFunctionName* entry_points = |
| ParseEntryPointsManifestIfPresent(); |
| |
| SetupStubNativeResolversForPrecompilation(entry_points); |
| |
| // Load the specified script. |
| library = LoadSnapshotCreationScript(app_script_name); |
| VerifyLoaded(library); |
| |
| ImportNativeEntryPointLibrariesIntoRoot(entry_points); |
| |
| // Ensure that we mark all libraries as loaded. |
| result = Dart_FinalizeLoading(false); |
| CHECK_RESULT(result); |
| |
| if (entry_points == NULL) { |
| ASSERT(!IsSnapshottingForPrecompilation()); |
| CreateAndWriteSnapshot(); |
| } else { |
| CreateAndWritePrecompiledSnapshot(entry_points); |
| } |
| |
| CleanupEntryPointsCollection(entry_points); |
| |
| Dart_EnterIsolate(UriResolverIsolateScope::isolate); |
| Dart_ShutdownIsolate(); |
| } else { |
| SetupForGenericSnapshotCreation(); |
| CreateAndWriteSnapshot(); |
| } |
| EventHandler::Stop(); |
| return 0; |
| } |
| |
| } // namespace bin |
| } // namespace dart |
| |
| int main(int argc, char** argv) { |
| return dart::bin::main(argc, argv); |
| } |
