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dart-sdk/runtime/bin/main.cc
Siva Annamalai d46a696957 Revert "Reland : [VM/Runtime] Cleanup package config initialization code" 
This reverts commit 03777dba31.

Reason for revert: Failures in couple of bots

Original change's description:
> Reland : [VM/Runtime] Cleanup package config initialization code
> 
> - Use _Init function for initialization of package config
> - Remove DartUtils::SetWorkingDirectory, SingleArgDart_Invoke,
> 
>   DartUtils::SetupPackageConfig
> - Rename Loader::InitForSnapshot to Loader::Init
> - Remove _setPackagesConfig, _setWorkingDirectory from builtin library
> - Rename _setPackagesMap to _setPackagesConfig
> Change-Id: I1e4a25e79706d7764247c9fbfcc8e8ce3231343c
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151633
> Reviewed-by: Alexander Aprelev <aam@google.com>
> Commit-Queue: Siva Annamalai <asiva@google.com>

TBR=aam@google.com,asiva@google.com

Change-Id: Ibea8c35fe310ac7708f00bb9ffd58715b6924cb5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151869
Reviewed-by: Siva Annamalai <asiva@google.com>
Auto-Submit: Siva Annamalai <asiva@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
2020-06-20 08:02:53 +00:00

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// Copyright (c) 2012, 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.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory>
#include "include/bin/dart_io_api.h"
#include "include/dart_api.h"
#include "include/dart_embedder_api.h"
#include "include/dart_tools_api.h"
#include "bin/builtin.h"
#include "bin/console.h"
#include "bin/crashpad.h"
#include "bin/dartutils.h"
#include "bin/dfe.h"
#include "bin/error_exit.h"
#include "bin/eventhandler.h"
#include "bin/extensions.h"
#include "bin/file.h"
#include "bin/gzip.h"
#include "bin/isolate_data.h"
#include "bin/loader.h"
#include "bin/main_options.h"
#include "bin/platform.h"
#include "bin/process.h"
#include "bin/snapshot_utils.h"
#include "bin/thread.h"
#include "bin/utils.h"
#include "bin/vmservice_impl.h"
#include "platform/globals.h"
#include "platform/growable_array.h"
#include "platform/hashmap.h"
#include "platform/syslog.h"
#include "platform/text_buffer.h"
#include "platform/utils.h"
extern "C" {
extern const uint8_t kDartVmSnapshotData[];
extern const uint8_t kDartVmSnapshotInstructions[];
extern const uint8_t kDartCoreIsolateSnapshotData[];
extern const uint8_t kDartCoreIsolateSnapshotInstructions[];
}
namespace dart {
namespace bin {
// Snapshot pieces we link in a snapshot.
const uint8_t* vm_snapshot_data = kDartVmSnapshotData;
const uint8_t* vm_snapshot_instructions = kDartVmSnapshotInstructions;
const uint8_t* core_isolate_snapshot_data = kDartCoreIsolateSnapshotData;
const uint8_t* core_isolate_snapshot_instructions =
kDartCoreIsolateSnapshotInstructions;
/**
* Global state used to control and store generation of application snapshots.
* An application snapshot can be generated and run using the following
* command
* dart --snapshot-kind=app-jit --snapshot=<app_snapshot_filename>
* <script_uri> [<script_options>]
* To Run the application snapshot generated above, use :
* dart <app_snapshot_filename> [<script_options>]
*/
static bool vm_run_app_snapshot = false;
static char* app_script_uri = NULL;
static const uint8_t* app_isolate_snapshot_data = NULL;
static const uint8_t* app_isolate_snapshot_instructions = NULL;
static bool kernel_isolate_is_running = false;
static Dart_Isolate main_isolate = NULL;
static void ReadFile(const char* filename, uint8_t** buffer, intptr_t* size);
static Dart_Handle CreateRuntimeOptions(CommandLineOptions* options) {
int options_count = options->count();
Dart_Handle string_type = DartUtils::GetDartType("dart:core", "String");
if (Dart_IsError(string_type)) {
return string_type;
}
Dart_Handle dart_arguments =
Dart_NewListOfTypeFilled(string_type, Dart_EmptyString(), options_count);
if (Dart_IsError(dart_arguments)) {
return dart_arguments;
}
for (int i = 0; i < options_count; i++) {
Dart_Handle argument_value = DartUtils::NewString(options->GetArgument(i));
if (Dart_IsError(argument_value)) {
return argument_value;
}
Dart_Handle result = Dart_ListSetAt(dart_arguments, i, argument_value);
if (Dart_IsError(result)) {
return result;
}
}
return dart_arguments;
}
#define SAVE_ERROR_AND_EXIT(result) \
*error = strdup(Dart_GetError(result)); \
if (Dart_IsCompilationError(result)) { \
*exit_code = kCompilationErrorExitCode; \
} else if (Dart_IsApiError(result)) { \
*exit_code = kApiErrorExitCode; \
} else { \
*exit_code = kErrorExitCode; \
} \
Dart_ExitScope(); \
Dart_ShutdownIsolate(); \
return NULL;
#define CHECK_RESULT(result) \
if (Dart_IsError(result)) { \
SAVE_ERROR_AND_EXIT(result); \
}
#define CHECK_RESULT_CLEANUP(result, cleanup) \
if (Dart_IsError(result)) { \
delete (cleanup); \
SAVE_ERROR_AND_EXIT(result); \
}
static void WriteDepsFile(Dart_Isolate isolate) {
if (Options::depfile() == NULL) {
return;
}
File* file = File::Open(NULL, Options::depfile(), File::kWriteTruncate);
if (file == NULL) {
ErrorExit(kErrorExitCode, "Error: Unable to open snapshot depfile: %s\n\n",
Options::depfile());
}
bool success = true;
if (Options::snapshot_filename() != NULL) {
success &= file->Print("%s: ", Options::snapshot_filename());
} else {
success &= file->Print("%s: ", Options::depfile_output_filename());
}
if (kernel_isolate_is_running) {
Dart_KernelCompilationResult result = Dart_KernelListDependencies();
if (result.status != Dart_KernelCompilationStatus_Ok) {
ErrorExit(
kErrorExitCode,
"Error: Failed to fetch dependencies from kernel service: %s\n\n",
result.error);
}
success &= file->WriteFully(result.kernel, result.kernel_size);
free(result.kernel);
}
success &= file->Print("\n");
if (!success) {
ErrorExit(kErrorExitCode, "Error: Unable to write snapshot depfile: %s\n\n",
Options::depfile());
}
file->Release();
}
static void OnExitHook(int64_t exit_code) {
if (Dart_CurrentIsolate() != main_isolate) {
Syslog::PrintErr(
"A snapshot was requested, but a secondary isolate "
"performed a hard exit (%" Pd64 ").\n",
exit_code);
Platform::Exit(kErrorExitCode);
}
if (exit_code == 0) {
if (Options::gen_snapshot_kind() == kAppJIT) {
Snapshot::GenerateAppJIT(Options::snapshot_filename());
}
WriteDepsFile(main_isolate);
}
}
static Dart_Handle SetupCoreLibraries(Dart_Isolate isolate,
IsolateData* isolate_data,
bool is_isolate_group_start,
const char** resolved_packages_config) {
auto isolate_group_data = isolate_data->isolate_group_data();
const auto packages_file = isolate_data->packages_file();
const auto script_uri = isolate_group_data->script_url;
Dart_Handle result;
// Prepare builtin and other core libraries for use to resolve URIs.
// Set up various closures, e.g: printing, timers etc.
// Set up package configuration for URI resolution.
result = DartUtils::PrepareForScriptLoading(false, Options::trace_loading());
if (Dart_IsError(result)) return result;
// Setup packages config if specified.
result = DartUtils::SetupPackageConfig(packages_file);
if (Dart_IsError(result)) return result;
if (!Dart_IsNull(result) && resolved_packages_config != nullptr) {
result = Dart_StringToCString(result, resolved_packages_config);
if (Dart_IsError(result)) return result;
ASSERT(*resolved_packages_config != nullptr);
#if !defined(DART_PRECOMPILED_RUNTIME)
if (is_isolate_group_start) {
isolate_group_data->set_resolved_packages_config(
*resolved_packages_config);
} else {
ASSERT(strcmp(isolate_group_data->resolved_packages_config(),
*resolved_packages_config) == 0);
}
#endif
}
result = Dart_SetEnvironmentCallback(DartUtils::EnvironmentCallback);
if (Dart_IsError(result)) return result;
// Setup the native resolver as the snapshot does not carry it.
Builtin::SetNativeResolver(Builtin::kBuiltinLibrary);
Builtin::SetNativeResolver(Builtin::kIOLibrary);
Builtin::SetNativeResolver(Builtin::kCLILibrary);
VmService::SetNativeResolver();
const char* namespc =
Dart_IsKernelIsolate(isolate) ? NULL : Options::namespc();
result =
DartUtils::SetupIOLibrary(namespc, script_uri, Options::exit_disabled());
if (Dart_IsError(result)) return result;
return Dart_Null();
}
static bool OnIsolateInitialize(void** child_callback_data, char** error) {
Dart_Isolate isolate = Dart_CurrentIsolate();
ASSERT(isolate != nullptr);
auto isolate_group_data =
reinterpret_cast<IsolateGroupData*>(Dart_CurrentIsolateGroupData());
auto isolate_data = new IsolateData(isolate_group_data);
*child_callback_data = isolate_data;
Dart_EnterScope();
const auto script_uri = isolate_group_data->script_url;
const bool isolate_run_app_snapshot =
isolate_group_data->RunFromAppSnapshot();
Dart_Handle result = SetupCoreLibraries(isolate, isolate_data,
/*group_start=*/false,
/*resolved_packages_config=*/nullptr);
if (Dart_IsError(result)) goto failed;
if (isolate_run_app_snapshot) {
if (Dart_IsVMFlagSet("support_service") || !Dart_IsPrecompiledRuntime()) {
result = Loader::InitForSnapshot(script_uri, isolate_data);
if (Dart_IsError(result)) goto failed;
}
} else {
result = DartUtils::ResolveScript(Dart_NewStringFromCString(script_uri));
if (Dart_IsError(result)) return result != nullptr;
if (isolate_group_data->kernel_buffer().get() != nullptr) {
// Various core-library parts will send requests to the Loader to resolve
// relative URIs and perform other related tasks. We need Loader to be
// initialized for this to work because loading from Kernel binary
// bypasses normal source code loading paths that initialize it.
const char* resolved_script_uri = NULL;
result = Dart_StringToCString(result, &resolved_script_uri);
if (Dart_IsError(result)) goto failed;
result = Loader::InitForSnapshot(resolved_script_uri, isolate_data);
if (Dart_IsError(result)) goto failed;
}
}
if (isolate_run_app_snapshot) {
result = Loader::ReloadNativeExtensions();
if (Dart_IsError(result)) goto failed;
}
// Make the isolate runnable so that it is ready to handle messages.
Dart_ExitScope();
Dart_ExitIsolate();
*error = Dart_IsolateMakeRunnable(isolate);
Dart_EnterIsolate(isolate);
return *error == nullptr;
failed:
*error = strdup(Dart_GetError(result));
Dart_ExitScope();
return false;
}
static Dart_Isolate IsolateSetupHelper(Dart_Isolate isolate,
bool is_main_isolate,
const char* script_uri,
const char* packages_config,
bool isolate_run_app_snapshot,
Dart_IsolateFlags* flags,
char** error,
int* exit_code) {
Dart_EnterScope();
// Set up the library tag handler for the isolate group shared by all
// isolates in the group.
Dart_Handle result = Dart_SetLibraryTagHandler(Loader::LibraryTagHandler);
CHECK_RESULT(result);
auto isolate_data = reinterpret_cast<IsolateData*>(Dart_IsolateData(isolate));
const char* resolved_packages_config = nullptr;
result = SetupCoreLibraries(isolate, isolate_data,
/*is_isolate_group_start=*/true,
&resolved_packages_config);
CHECK_RESULT(result);
#if !defined(DART_PRECOMPILED_RUNTIME)
auto isolate_group_data = isolate_data->isolate_group_data();
const uint8_t* kernel_buffer = isolate_group_data->kernel_buffer().get();
intptr_t kernel_buffer_size = isolate_group_data->kernel_buffer_size();
if (!isolate_run_app_snapshot && kernel_buffer == NULL &&
!Dart_IsKernelIsolate(isolate)) {
if (!dfe.CanUseDartFrontend()) {
const char* format = "Dart frontend unavailable to compile script %s.";
intptr_t len = snprintf(NULL, 0, format, script_uri) + 1;
*error = reinterpret_cast<char*>(malloc(len));
ASSERT(error != NULL);
snprintf(*error, len, format, script_uri);
*exit_code = kErrorExitCode;
Dart_ExitScope();
Dart_ShutdownIsolate();
return NULL;
}
uint8_t* application_kernel_buffer = NULL;
intptr_t application_kernel_buffer_size = 0;
dfe.CompileAndReadScript(script_uri, &application_kernel_buffer,
&application_kernel_buffer_size, error, exit_code,
resolved_packages_config);
if (application_kernel_buffer == NULL) {
Dart_ExitScope();
Dart_ShutdownIsolate();
return NULL;
}
isolate_group_data->SetKernelBufferNewlyOwned(
application_kernel_buffer, application_kernel_buffer_size);
kernel_buffer = application_kernel_buffer;
kernel_buffer_size = application_kernel_buffer_size;
}
if (kernel_buffer != NULL) {
Dart_Handle uri = Dart_NewStringFromCString(script_uri);
CHECK_RESULT(uri);
Dart_Handle resolved_script_uri = DartUtils::ResolveScript(uri);
CHECK_RESULT(resolved_script_uri);
result = Dart_LoadScriptFromKernel(kernel_buffer, kernel_buffer_size);
CHECK_RESULT(result);
}
#endif // !defined(DART_PRECOMPILED_RUNTIME)
if (isolate_run_app_snapshot) {
Dart_Handle result = Loader::ReloadNativeExtensions();
CHECK_RESULT(result);
}
if (isolate_run_app_snapshot) {
if (Dart_IsVMFlagSet("support_service") || !Dart_IsPrecompiledRuntime()) {
Dart_Handle result = Loader::InitForSnapshot(script_uri, isolate_data);
CHECK_RESULT(result);
}
#if !defined(DART_PRECOMPILED_RUNTIME)
if (is_main_isolate) {
// Find the canonical uri of the app snapshot. We'll use this to decide if
// other isolates should use the app snapshot or the core snapshot.
const char* resolved_script_uri = NULL;
result = Dart_StringToCString(
DartUtils::ResolveScript(Dart_NewStringFromCString(script_uri)),
&resolved_script_uri);
CHECK_RESULT(result);
ASSERT(app_script_uri == NULL);
app_script_uri = strdup(resolved_script_uri);
}
#endif // !defined(DART_PRECOMPILED_RUNTIME)
} else {
#if !defined(DART_PRECOMPILED_RUNTIME)
// Load the specified application script into the newly created isolate.
Dart_Handle uri =
DartUtils::ResolveScript(Dart_NewStringFromCString(script_uri));
CHECK_RESULT(uri);
if (kernel_buffer != NULL) {
// relative URIs and perform other related tasks. We need Loader to be
// initialized for this to work because loading from Kernel binary
// bypasses normal source code loading paths that initialize it.
const char* resolved_script_uri = NULL;
result = Dart_StringToCString(uri, &resolved_script_uri);
CHECK_RESULT(result);
result = Loader::InitForSnapshot(resolved_script_uri, isolate_data);
CHECK_RESULT(result);
}
Dart_TimelineEvent("LoadScript", Dart_TimelineGetMicros(),
Dart_GetMainPortId(), Dart_Timeline_Event_Async_End, 0,
NULL, NULL);
#else
UNREACHABLE();
#endif // !defined(DART_PRECOMPILED_RUNTIME)
}
if (Options::gen_snapshot_kind() == kAppJIT) {
// If we sort, we must do it for all isolates, not just the main isolate,
// otherwise isolates related by spawnFunction will disagree on CIDs and
// cannot correctly send each other messages.
result = Dart_SortClasses();
CHECK_RESULT(result);
}
// Make the isolate runnable so that it is ready to handle messages.
Dart_ExitScope();
Dart_ExitIsolate();
*error = Dart_IsolateMakeRunnable(isolate);
if (*error != NULL) {
Dart_EnterIsolate(isolate);
Dart_ShutdownIsolate();
return NULL;
}
return isolate;
}
#if !defined(EXCLUDE_CFE_AND_KERNEL_PLATFORM)
// Returns newly created Kernel Isolate on success, NULL on failure.
// For now we only support the kernel isolate coming up from an
// application snapshot or from a .dill file.
static Dart_Isolate CreateAndSetupKernelIsolate(const char* script_uri,
const char* packages_config,
Dart_IsolateFlags* flags,
char** error,
int* exit_code) {
// Do not start a kernel isolate if we are doing a training run
// to create an app JIT snapshot and a kernel file is specified
// as the application to run.
if (Options::gen_snapshot_kind() == kAppJIT) {
const uint8_t* kernel_buffer = NULL;
intptr_t kernel_buffer_size = 0;
dfe.application_kernel_buffer(&kernel_buffer, &kernel_buffer_size);
if (kernel_buffer_size != 0) {
return NULL;
}
}
// Create and Start the kernel isolate.
const char* kernel_snapshot_uri = dfe.frontend_filename();
const char* uri =
kernel_snapshot_uri != NULL ? kernel_snapshot_uri : script_uri;
if (packages_config == NULL) {
packages_config = Options::packages_file();
}
Dart_Isolate isolate = NULL;
IsolateGroupData* isolate_group_data = nullptr;
IsolateData* isolate_data = nullptr;
bool isolate_run_app_snapshot = false;
AppSnapshot* app_snapshot = NULL;
// Kernel isolate uses an app snapshot or uses the dill file.
if ((kernel_snapshot_uri != NULL) &&
(app_snapshot = Snapshot::TryReadAppSnapshot(kernel_snapshot_uri)) !=
NULL) {
const uint8_t* isolate_snapshot_data = NULL;
const uint8_t* isolate_snapshot_instructions = NULL;
const uint8_t* ignore_vm_snapshot_data;
const uint8_t* ignore_vm_snapshot_instructions;
isolate_run_app_snapshot = true;
app_snapshot->SetBuffers(
&ignore_vm_snapshot_data, &ignore_vm_snapshot_instructions,
&isolate_snapshot_data, &isolate_snapshot_instructions);
isolate_group_data = new IsolateGroupData(
uri, packages_config, app_snapshot, isolate_run_app_snapshot);
isolate_data = new IsolateData(isolate_group_data);
isolate = Dart_CreateIsolateGroup(
DART_KERNEL_ISOLATE_NAME, DART_KERNEL_ISOLATE_NAME,
isolate_snapshot_data, isolate_snapshot_instructions, flags,
isolate_group_data, isolate_data, error);
}
if (isolate == NULL) {
// Clear error from app snapshot and re-trying from kernel file.
free(*error);
*error = NULL;
delete isolate_data;
delete isolate_group_data;
const uint8_t* kernel_service_buffer = NULL;
intptr_t kernel_service_buffer_size = 0;
dfe.LoadKernelService(&kernel_service_buffer, &kernel_service_buffer_size);
ASSERT(kernel_service_buffer != NULL);
isolate_group_data = new IsolateGroupData(uri, packages_config, nullptr,
isolate_run_app_snapshot);
isolate_group_data->SetKernelBufferUnowned(
const_cast<uint8_t*>(kernel_service_buffer),
kernel_service_buffer_size);
isolate_data = new IsolateData(isolate_group_data);
isolate = Dart_CreateIsolateGroupFromKernel(
DART_KERNEL_ISOLATE_NAME, DART_KERNEL_ISOLATE_NAME,
kernel_service_buffer, kernel_service_buffer_size, flags,
isolate_group_data, isolate_data, error);
}
if (isolate == NULL) {
Syslog::PrintErr("%s\n", *error);
delete isolate_data;
delete isolate_group_data;
return NULL;
}
kernel_isolate_is_running = true;
return IsolateSetupHelper(isolate, false, uri, packages_config,
isolate_run_app_snapshot, flags, error, exit_code);
}
#endif // !defined(EXCLUDE_CFE_AND_KERNEL_PLATFORM)
// Returns newly created Service Isolate on success, NULL on failure.
// For now we only support the service isolate coming up from sources
// which are compiled by the VM parser.
static Dart_Isolate CreateAndSetupServiceIsolate(const char* script_uri,
const char* packages_config,
Dart_IsolateFlags* flags,
char** error,
int* exit_code) {
#if !defined(PRODUCT)
ASSERT(script_uri != NULL);
Dart_Isolate isolate = NULL;
auto isolate_group_data =
new IsolateGroupData(script_uri, packages_config, nullptr, false);
#if defined(DART_PRECOMPILED_RUNTIME)
// AOT: All isolates start from the app snapshot.
const uint8_t* isolate_snapshot_data = app_isolate_snapshot_data;
const uint8_t* isolate_snapshot_instructions =
app_isolate_snapshot_instructions;
isolate = Dart_CreateIsolateGroup(
script_uri, DART_VM_SERVICE_ISOLATE_NAME, isolate_snapshot_data,
isolate_snapshot_instructions, flags, isolate_group_data,
/*isolate_data=*/nullptr, error);
#else
// JIT: Service isolate uses the core libraries snapshot.
// Set flag to load and retain the vmservice library.
ASSERT(flags != NULL);
flags->load_vmservice_library = true;
const uint8_t* isolate_snapshot_data = core_isolate_snapshot_data;
const uint8_t* isolate_snapshot_instructions =
core_isolate_snapshot_instructions;
isolate = Dart_CreateIsolateGroup(
script_uri, DART_VM_SERVICE_ISOLATE_NAME, isolate_snapshot_data,
isolate_snapshot_instructions, flags, isolate_group_data,
/*isolate_data=*/nullptr, error);
#endif // !defined(DART_PRECOMPILED_RUNTIME)
if (isolate == NULL) {
delete isolate_group_data;
return NULL;
}
Dart_EnterScope();
Dart_Handle result = Dart_SetLibraryTagHandler(Loader::LibraryTagHandler);
CHECK_RESULT(result);
// Load embedder specific bits and return.
if (!VmService::Setup(
Options::vm_service_server_ip(), Options::vm_service_server_port(),
Options::vm_service_dev_mode(), Options::vm_service_auth_disabled(),
Options::vm_write_service_info_filename(), Options::trace_loading(),
Options::deterministic(), Options::enable_service_port_fallback())) {
*error = strdup(VmService::GetErrorMessage());
return NULL;
}
if (Options::compile_all()) {
result = Dart_CompileAll();
CHECK_RESULT(result);
}
result = Dart_SetEnvironmentCallback(DartUtils::EnvironmentCallback);
CHECK_RESULT(result);
Dart_ExitScope();
Dart_ExitIsolate();
return isolate;
#else // !defined(PRODUCT)
return NULL;
#endif // !defined(PRODUCT)
}
// Returns newly created Isolate on success, NULL on failure.
static Dart_Isolate CreateIsolateGroupAndSetupHelper(
bool is_main_isolate,
const char* script_uri,
const char* name,
const char* packages_config,
Dart_IsolateFlags* flags,
void* callback_data,
char** error,
int* exit_code) {
int64_t start = Dart_TimelineGetMicros();
ASSERT(script_uri != NULL);
uint8_t* kernel_buffer = NULL;
std::shared_ptr<uint8_t> parent_kernel_buffer;
intptr_t kernel_buffer_size = 0;
AppSnapshot* app_snapshot = NULL;
#if defined(DART_PRECOMPILED_RUNTIME)
// AOT: All isolates start from the app snapshot.
bool isolate_run_app_snapshot = true;
const uint8_t* isolate_snapshot_data = app_isolate_snapshot_data;
const uint8_t* isolate_snapshot_instructions =
app_isolate_snapshot_instructions;
flags->null_safety =
Dart_DetectNullSafety(nullptr, nullptr, nullptr, isolate_snapshot_data,
isolate_snapshot_instructions, nullptr, -1);
#else
// JIT: Main isolate starts from the app snapshot, if any. Other isolates
// use the core libraries snapshot.
bool isolate_run_app_snapshot = false;
const uint8_t* isolate_snapshot_data = core_isolate_snapshot_data;
const uint8_t* isolate_snapshot_instructions =
core_isolate_snapshot_instructions;
if ((app_isolate_snapshot_data != NULL) &&
(is_main_isolate || ((app_script_uri != NULL) &&
(strcmp(script_uri, app_script_uri) == 0)))) {
isolate_run_app_snapshot = true;
isolate_snapshot_data = app_isolate_snapshot_data;
isolate_snapshot_instructions = app_isolate_snapshot_instructions;
} else if (!is_main_isolate) {
app_snapshot = Snapshot::TryReadAppSnapshot(script_uri);
if (app_snapshot != NULL) {
isolate_run_app_snapshot = true;
const uint8_t* ignore_vm_snapshot_data;
const uint8_t* ignore_vm_snapshot_instructions;
app_snapshot->SetBuffers(
&ignore_vm_snapshot_data, &ignore_vm_snapshot_instructions,
&isolate_snapshot_data, &isolate_snapshot_instructions);
}
}
if (flags->copy_parent_code && callback_data != nullptr) {
auto parent_isolate_group_data =
reinterpret_cast<IsolateData*>(callback_data)->isolate_group_data();
parent_kernel_buffer = parent_isolate_group_data->kernel_buffer();
kernel_buffer = parent_kernel_buffer.get();
kernel_buffer_size = parent_isolate_group_data->kernel_buffer_size();
}
if (kernel_buffer == NULL && !isolate_run_app_snapshot) {
dfe.ReadScript(script_uri, &kernel_buffer, &kernel_buffer_size);
}
PathSanitizer script_uri_sanitizer(script_uri);
PathSanitizer packages_config_sanitizer(packages_config);
flags->null_safety = Dart_DetectNullSafety(
script_uri_sanitizer.sanitized_uri(),
packages_config_sanitizer.sanitized_uri(),
DartUtils::original_working_directory, isolate_snapshot_data,
isolate_snapshot_instructions, kernel_buffer, kernel_buffer_size);
#endif // !defined(DART_PRECOMPILED_RUNTIME)
auto isolate_group_data = new IsolateGroupData(
script_uri, packages_config, app_snapshot, isolate_run_app_snapshot);
if (kernel_buffer != NULL) {
if (parent_kernel_buffer) {
isolate_group_data->SetKernelBufferAlreadyOwned(
std::move(parent_kernel_buffer), kernel_buffer_size);
} else {
isolate_group_data->SetKernelBufferNewlyOwned(kernel_buffer,
kernel_buffer_size);
}
}
Dart_Isolate isolate = NULL;
#if !defined(DART_PRECOMPILED_RUNTIME)
if (!isolate_run_app_snapshot && (isolate_snapshot_data == NULL)) {
const uint8_t* platform_kernel_buffer = NULL;
intptr_t platform_kernel_buffer_size = 0;
dfe.LoadPlatform(&platform_kernel_buffer, &platform_kernel_buffer_size);
if (platform_kernel_buffer == NULL) {
platform_kernel_buffer = kernel_buffer;
platform_kernel_buffer_size = kernel_buffer_size;
}
if (platform_kernel_buffer == NULL) {
#if defined(EXCLUDE_CFE_AND_KERNEL_PLATFORM)
FATAL(
"Binary built with --exclude-kernel-service. Cannot run"
" from source.");
#else
FATAL("platform_program cannot be NULL.");
#endif // defined(EXCLUDE_CFE_AND_KERNEL_PLATFORM)
}
// TODO(sivachandra): When the platform program is unavailable, check if
// application kernel binary is self contained or an incremental binary.
// Isolate should be created only if it is a self contained kernel binary.
auto isolate_data = new IsolateData(isolate_group_data);
isolate = Dart_CreateIsolateGroupFromKernel(
script_uri, name, platform_kernel_buffer, platform_kernel_buffer_size,
flags, isolate_group_data, isolate_data, error);
} else {
auto isolate_data = new IsolateData(isolate_group_data);
isolate = Dart_CreateIsolateGroup(script_uri, name, isolate_snapshot_data,
isolate_snapshot_instructions, flags,
isolate_group_data, isolate_data, error);
}
#else
auto isolate_data = new IsolateData(isolate_group_data);
isolate = Dart_CreateIsolateGroup(script_uri, name, isolate_snapshot_data,
isolate_snapshot_instructions, flags,
isolate_group_data, isolate_data, error);
#endif // !defined(DART_PRECOMPILED_RUNTIME)
Dart_Isolate created_isolate = NULL;
if (isolate == NULL) {
delete isolate_group_data;
} else {
created_isolate = IsolateSetupHelper(
isolate, is_main_isolate, script_uri, packages_config,
isolate_run_app_snapshot, flags, error, exit_code);
}
int64_t end = Dart_TimelineGetMicros();
Dart_TimelineEvent("CreateIsolateGroupAndSetupHelper", start, end,
Dart_Timeline_Event_Duration, 0, NULL, NULL);
return created_isolate;
}
#undef CHECK_RESULT
static Dart_Isolate CreateIsolateGroupAndSetup(const char* script_uri,
const char* main,
const char* package_root,
const char* package_config,
Dart_IsolateFlags* flags,
void* callback_data,
char** error) {
// The VM should never call the isolate helper with a NULL flags.
ASSERT(flags != NULL);
ASSERT(flags->version == DART_FLAGS_CURRENT_VERSION);
ASSERT(package_root == nullptr);
int exit_code = 0;
#if !defined(EXCLUDE_CFE_AND_KERNEL_PLATFORM)
if (strcmp(script_uri, DART_KERNEL_ISOLATE_NAME) == 0) {
return CreateAndSetupKernelIsolate(script_uri, package_config, flags, error,
&exit_code);
}
#endif // !defined(EXCLUDE_CFE_AND_KERNEL_PLATFORM)
if (strcmp(script_uri, DART_VM_SERVICE_ISOLATE_NAME) == 0) {
return CreateAndSetupServiceIsolate(script_uri, package_config, flags,
error, &exit_code);
}
bool is_main_isolate = false;
return CreateIsolateGroupAndSetupHelper(is_main_isolate, script_uri, main,
package_config, flags, callback_data,
error, &exit_code);
}
static void OnIsolateShutdown(void* isolate_group_data, void* isolate_data) {
Dart_EnterScope();
Dart_Handle sticky_error = Dart_GetStickyError();
if (!Dart_IsNull(sticky_error) && !Dart_IsFatalError(sticky_error)) {
Syslog::PrintErr("%s\n", Dart_GetError(sticky_error));
}
Dart_ExitScope();
}
static void DeleteIsolateData(void* isolate_group_data, void* callback_data) {
auto isolate_data = reinterpret_cast<IsolateData*>(callback_data);
delete isolate_data;
}
static void DeleteIsolateGroupData(void* callback_data) {
auto isolate_group_data = reinterpret_cast<IsolateGroupData*>(callback_data);
delete isolate_group_data;
}
static const char* kStdoutStreamId = "Stdout";
static const char* kStderrStreamId = "Stderr";
static bool ServiceStreamListenCallback(const char* stream_id) {
if (strcmp(stream_id, kStdoutStreamId) == 0) {
SetCaptureStdout(true);
return true;
} else if (strcmp(stream_id, kStderrStreamId) == 0) {
SetCaptureStderr(true);
return true;
}
return false;
}
static void ServiceStreamCancelCallback(const char* stream_id) {
if (strcmp(stream_id, kStdoutStreamId) == 0) {
SetCaptureStdout(false);
} else if (strcmp(stream_id, kStderrStreamId) == 0) {
SetCaptureStderr(false);
}
}
static bool FileModifiedCallback(const char* url, int64_t since) {
if (strncmp(url, "file:///", 8) != 0) {
// If it isn't a file on local disk, we don't know if it has been
// modified.
return true;
}
int64_t data[File::kStatSize];
File::Stat(NULL, url + 7, data);
if (data[File::kType] == File::kDoesNotExist) {
return true;
}
bool modified = data[File::kModifiedTime] > since;
return modified;
}
static void EmbedderInformationCallback(Dart_EmbedderInformation* info) {
info->version = DART_EMBEDDER_INFORMATION_CURRENT_VERSION;
info->name = "Dart VM";
Process::GetRSSInformation(&(info->max_rss), &(info->current_rss));
}
#define CHECK_RESULT(result) \
if (Dart_IsError(result)) { \
const int exit_code = Dart_IsCompilationError(result) \
? kCompilationErrorExitCode \
: kErrorExitCode; \
ErrorExit(exit_code, "%s\n", Dart_GetError(result)); \
}
static void WriteFile(const char* filename,
const uint8_t* buffer,
const intptr_t size) {
File* file = File::Open(NULL, filename, File::kWriteTruncate);
if (file == NULL) {
ErrorExit(kErrorExitCode, "Unable to open file %s\n", filename);
}
if (!file->WriteFully(buffer, size)) {
ErrorExit(kErrorExitCode, "Unable to write file %s\n", filename);
}
file->Release();
}
static void ReadFile(const char* filename, uint8_t** buffer, intptr_t* size) {
File* file = File::Open(NULL, filename, File::kRead);
if (file == NULL) {
ErrorExit(kErrorExitCode, "Unable to open file %s\n", filename);
}
*size = file->Length();
*buffer = reinterpret_cast<uint8_t*>(malloc(*size));
if (!file->ReadFully(*buffer, *size)) {
ErrorExit(kErrorExitCode, "Unable to read file %s\n", filename);
}
file->Release();
}
bool RunMainIsolate(const char* script_name, CommandLineOptions* dart_options) {
// Call CreateIsolateGroupAndSetup which creates an isolate and loads up
// the specified application script.
char* error = NULL;
bool is_main_isolate = true;
int exit_code = 0;
Dart_IsolateFlags flags;
Dart_IsolateFlagsInitialize(&flags);
if (Options::package_root() != nullptr) {
Syslog::PrintErr(
"Warning: The --package-root option is deprecated (was: %s)\n",
Options::package_root());
}
Dart_Isolate isolate = CreateIsolateGroupAndSetupHelper(
is_main_isolate, script_name, "main", Options::packages_file(), &flags,
NULL /* callback_data */, &error, &exit_code);
if (isolate == NULL) {
Syslog::PrintErr("%s\n", error);
free(error);
error = NULL;
Process::TerminateExitCodeHandler();
error = Dart_Cleanup();
if (error != NULL) {
Syslog::PrintErr("VM cleanup failed: %s\n", error);
free(error);
}
dart::embedder::Cleanup();
Platform::Exit((exit_code != 0) ? exit_code : kErrorExitCode);
}
main_isolate = isolate;
Dart_EnterIsolate(isolate);
ASSERT(isolate == Dart_CurrentIsolate());
ASSERT(isolate != NULL);
Dart_Handle result;
Dart_EnterScope();
auto isolate_group_data =
reinterpret_cast<IsolateGroupData*>(Dart_IsolateGroupData(isolate));
if (Options::gen_snapshot_kind() == kKernel) {
if (vm_run_app_snapshot) {
Syslog::PrintErr(
"Cannot create a script snapshot from an app snapshot.\n");
// The snapshot would contain references to the app snapshot instead of
// the core snapshot.
Platform::Exit(kErrorExitCode);
}
Snapshot::GenerateKernel(Options::snapshot_filename(), script_name,
isolate_group_data->resolved_packages_config());
} else {
// Lookup the library of the root script.
Dart_Handle root_lib = Dart_RootLibrary();
#if !defined(DART_PRECOMPILED_RUNTIME)
if (Options::compile_all()) {
result = Dart_CompileAll();
CHECK_RESULT(result);
}
#endif // !defined(DART_PRECOMPILED_RUNTIME)
if (Dart_IsNull(root_lib)) {
ErrorExit(kErrorExitCode, "Unable to find root library for '%s'\n",
script_name);
}
if (Options::load_compilation_trace_filename() != NULL) {
uint8_t* buffer = NULL;
intptr_t size = 0;
ReadFile(Options::load_compilation_trace_filename(), &buffer, &size);
result = Dart_LoadCompilationTrace(buffer, size);
free(buffer);
CHECK_RESULT(result);
}
if (Options::load_type_feedback_filename() != NULL) {
uint8_t* buffer = NULL;
intptr_t size = 0;
ReadFile(Options::load_type_feedback_filename(), &buffer, &size);
result = Dart_LoadTypeFeedback(buffer, size);
free(buffer);
CHECK_RESULT(result);
}
// Create a closure for the main entry point which is in the exported
// namespace of the root library or invoke a getter of the same name
// in the exported namespace and return the resulting closure.
Dart_Handle main_closure =
Dart_GetField(root_lib, Dart_NewStringFromCString("main"));
CHECK_RESULT(main_closure);
if (!Dart_IsClosure(main_closure)) {
ErrorExit(kErrorExitCode, "Unable to find 'main' in root library '%s'\n",
script_name);
}
// Call _startIsolate in the isolate library to enable dispatching the
// initial startup message.
const intptr_t kNumIsolateArgs = 2;
Dart_Handle isolate_args[kNumIsolateArgs];
isolate_args[0] = main_closure; // entryPoint
isolate_args[1] = CreateRuntimeOptions(dart_options); // args
Dart_Handle isolate_lib =
Dart_LookupLibrary(Dart_NewStringFromCString("dart:isolate"));
result =
Dart_Invoke(isolate_lib, Dart_NewStringFromCString("_startMainIsolate"),
kNumIsolateArgs, isolate_args);
CHECK_RESULT(result);
// Keep handling messages until the last active receive port is closed.
result = Dart_RunLoop();
// Generate an app snapshot after execution if specified.
if (Options::gen_snapshot_kind() == kAppJIT) {
if (!Dart_IsCompilationError(result)) {
Snapshot::GenerateAppJIT(Options::snapshot_filename());
}
}
CHECK_RESULT(result);
if (Options::save_compilation_trace_filename() != NULL) {
uint8_t* buffer = NULL;
intptr_t size = 0;
result = Dart_SaveCompilationTrace(&buffer, &size);
CHECK_RESULT(result);
WriteFile(Options::save_compilation_trace_filename(), buffer, size);
}
if (Options::save_type_feedback_filename() != NULL) {
uint8_t* buffer = NULL;
intptr_t size = 0;
result = Dart_SaveTypeFeedback(&buffer, &size);
CHECK_RESULT(result);
WriteFile(Options::save_type_feedback_filename(), buffer, size);
}
}
WriteDepsFile(isolate);
Dart_ExitScope();
// Shutdown the isolate.
Dart_ShutdownIsolate();
// No restart.
return false;
}
#undef CHECK_RESULT
// Observatory assets are not included in a product build.
#if !defined(PRODUCT)
extern unsigned int observatory_assets_archive_len;
extern const uint8_t* observatory_assets_archive;
Dart_Handle GetVMServiceAssetsArchiveCallback() {
uint8_t* decompressed = NULL;
intptr_t decompressed_len = 0;
Decompress(observatory_assets_archive, observatory_assets_archive_len,
&decompressed, &decompressed_len);
Dart_Handle tar_file =
DartUtils::MakeUint8Array(decompressed, decompressed_len);
// Free decompressed memory as it has been copied into a Dart array.
free(decompressed);
return tar_file;
}
#else // !defined(PRODUCT)
static Dart_GetVMServiceAssetsArchive GetVMServiceAssetsArchiveCallback = NULL;
#endif // !defined(PRODUCT)
void main(int argc, char** argv) {
char* script_name;
const int EXTRA_VM_ARGUMENTS = 10;
CommandLineOptions vm_options(argc + EXTRA_VM_ARGUMENTS);
CommandLineOptions dart_options(argc + EXTRA_VM_ARGUMENTS);
bool print_flags_seen = false;
bool verbose_debug_seen = false;
// Perform platform specific initialization.
if (!Platform::Initialize()) {
Syslog::PrintErr("Initialization failed\n");
Platform::Exit(kErrorExitCode);
}
// Save the console state so we can restore it at shutdown.
Console::SaveConfig();
// On Windows, the argv strings are code page encoded and not
// utf8. We need to convert them to utf8.
bool argv_converted = ShellUtils::GetUtf8Argv(argc, argv);
#if !defined(DART_PRECOMPILED_RUNTIME)
// Processing of some command line flags directly manipulates dfe.
Options::set_dfe(&dfe);
#endif // !defined(DART_PRECOMPILED_RUNTIME)
// When running from the command line we assume that we are optimizing for
// throughput, and therefore use a larger new gen semi space size and a faster
// new gen growth factor unless others have been specified.
if (kWordSize <= 4) {
vm_options.AddArgument("--new_gen_semi_max_size=16");
} else {
vm_options.AddArgument("--new_gen_semi_max_size=32");
}
vm_options.AddArgument("--new_gen_growth_factor=4");
AppSnapshot* app_snapshot = nullptr;
#if defined(DART_PRECOMPILED_RUNTIME)
// If the executable binary contains the runtime together with an appended
// snapshot, load and run that.
// Any arguments passed to such an executable are meant for the actual
// application so skip all Dart VM flag parsing.
const size_t kPathBufSize = PATH_MAX + 1;
char executable_path[kPathBufSize];
if (Platform::ResolveExecutablePathInto(executable_path, kPathBufSize) > 0) {
app_snapshot = Snapshot::TryReadAppendedAppSnapshotElf(executable_path);
if (app_snapshot != nullptr) {
script_name = argv[0];
// Store the executable name.
Platform::SetExecutableName(argv[0]);
// Parse out options to be passed to dart main.
for (int i = 1; i < argc; i++) {
dart_options.AddArgument(argv[i]);
}
}
}
#endif
// Parse command line arguments.
if (app_snapshot == nullptr) {
int result = Options::ParseArguments(
argc, argv, vm_run_app_snapshot, &vm_options, &script_name,
&dart_options, &print_flags_seen, &verbose_debug_seen);
if (result < 0) {
if (Options::help_option()) {
Options::PrintUsage();
Platform::Exit(0);
} else if (Options::version_option()) {
Options::PrintVersion();
Platform::Exit(0);
} else if (print_flags_seen) {
// Will set the VM flags, print them out and then we exit as no
// script was specified on the command line.
char* error =
Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
if (error != NULL) {
Syslog::PrintErr("Setting VM flags failed: %s\n", error);
free(error);
Platform::Exit(kErrorExitCode);
}
Platform::Exit(0);
} else {
Options::PrintUsage();
Platform::Exit(kErrorExitCode);
}
}
}
// At this point, script_name now points to either a script or a snapshot
// determined by DartDevUtils above.
DartUtils::SetEnvironment(Options::environment());
if (Options::suppress_core_dump()) {
Platform::SetCoreDumpResourceLimit(0);
} else {
InitializeCrashpadClient();
}
Loader::InitOnce();
if (app_snapshot == nullptr) {
// For testing purposes we add a flag to debug-mode to use the
// in-memory ELF loader.
const bool force_load_elf_from_memory =
false DEBUG_ONLY(|| Options::force_load_elf_from_memory());
app_snapshot =
Snapshot::TryReadAppSnapshot(script_name, force_load_elf_from_memory);
}
if (app_snapshot != nullptr) {
vm_run_app_snapshot = true;
app_snapshot->SetBuffers(&vm_snapshot_data, &vm_snapshot_instructions,
&app_isolate_snapshot_data,
&app_isolate_snapshot_instructions);
}
if (Options::gen_snapshot_kind() == kAppJIT) {
vm_options.AddArgument("--fields_may_be_reset");
}
#if defined(DART_PRECOMPILED_RUNTIME)
vm_options.AddArgument("--precompilation");
#endif
// If we need to write an app-jit snapshot or a depfile, then add an exit
// hook that writes the snapshot and/or depfile as appropriate.
if ((Options::gen_snapshot_kind() == kAppJIT) ||
(Options::depfile() != NULL)) {
Process::SetExitHook(OnExitHook);
}
char* error = nullptr;
if (!dart::embedder::InitOnce(&error)) {
Syslog::PrintErr("Standalone embedder initialization failed: %s\n", error);
free(error);
Platform::Exit(kErrorExitCode);
}
error = Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
if (error != NULL) {
Syslog::PrintErr("Setting VM flags failed: %s\n", error);
free(error);
Platform::Exit(kErrorExitCode);
}
// Note: must read platform only *after* VM flags are parsed because
// they might affect how the platform is loaded.
#if !defined(DART_PRECOMPILED_RUNTIME)
dfe.Init(Options::target_abi_version());
uint8_t* application_kernel_buffer = NULL;
intptr_t application_kernel_buffer_size = 0;
dfe.ReadScript(script_name, &application_kernel_buffer,
&application_kernel_buffer_size);
if (application_kernel_buffer != NULL) {
// Since we loaded the script anyway, save it.
dfe.set_application_kernel_buffer(application_kernel_buffer,
application_kernel_buffer_size);
Options::dfe()->set_use_dfe();
}
#endif
// Initialize the Dart VM.
Dart_InitializeParams init_params;
memset(&init_params, 0, sizeof(init_params));
init_params.version = DART_INITIALIZE_PARAMS_CURRENT_VERSION;
init_params.vm_snapshot_data = vm_snapshot_data;
init_params.vm_snapshot_instructions = vm_snapshot_instructions;
init_params.create_group = CreateIsolateGroupAndSetup;
init_params.initialize_isolate = OnIsolateInitialize;
init_params.shutdown_isolate = OnIsolateShutdown;
init_params.cleanup_isolate = DeleteIsolateData;
init_params.cleanup_group = DeleteIsolateGroupData;
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.get_service_assets = GetVMServiceAssetsArchiveCallback;
#if !defined(DART_PRECOMPILED_RUNTIME)
init_params.start_kernel_isolate =
dfe.UseDartFrontend() && dfe.CanUseDartFrontend();
#else
init_params.start_kernel_isolate = false;
#endif
error = Dart_Initialize(&init_params);
if (error != NULL) {
dart::embedder::Cleanup();
Syslog::PrintErr("VM initialization failed: %s\n", error);
free(error);
Platform::Exit(kErrorExitCode);
}
Dart_SetServiceStreamCallbacks(&ServiceStreamListenCallback,
&ServiceStreamCancelCallback);
Dart_SetFileModifiedCallback(&FileModifiedCallback);
Dart_SetEmbedderInformationCallback(&EmbedderInformationCallback);
// Run the main isolate until we aren't told to restart.
while (RunMainIsolate(script_name, &dart_options)) {
Syslog::PrintErr("Restarting VM\n");
}
// Terminate process exit-code handler.
Process::TerminateExitCodeHandler();
error = Dart_Cleanup();
if (error != NULL) {
Syslog::PrintErr("VM cleanup failed: %s\n", error);
free(error);
}
const intptr_t global_exit_code = Process::GlobalExitCode();
dart::embedder::Cleanup();
delete app_snapshot;
free(app_script_uri);
// Free copied argument strings if converted.
if (argv_converted) {
for (int i = 0; i < argc; i++) {
free(argv[i]);
}
}
// Free environment if any.
Options::DestroyEnvironment();
Platform::Exit(global_exit_code);
}
} // namespace bin
} // namespace dart
int main(int argc, char** argv) {
dart::bin::main(argc, argv);
UNREACHABLE();
}
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