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Unified Diff: runtime/bin/main.cc

Issue 2918033002: Reorganize the CreateIsolateAndSetupHelper code to make it more readable and facilitate further cha… (Closed)
Patch Set: Fixed review comments. Created 3 years, 7 months ago
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Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index 84ad83b69845c77fc6d4cf8dd5ab43f783c5686a..35ad358150d58ab340e59bc89e0df2916cacf63e 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -825,138 +825,17 @@ static void SnapshotOnExitHook(int64_t exit_code) {
}
}
-// Returns newly created Isolate on success, NULL on failure.
-static Dart_Isolate CreateIsolateAndSetupHelper(bool is_main_isolate,
- const char* script_uri,
- const char* main,
- const char* package_root,
- const char* packages_config,
- Dart_IsolateFlags* flags,
- char** error,
- int* exit_code) {
- ASSERT(script_uri != NULL);
- void* kernel_platform = NULL;
- void* kernel_program = NULL;
- 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;
-#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;
- const bool is_kernel_isolate =
- strcmp(script_uri, DART_KERNEL_ISOLATE_NAME) == 0;
- if (is_kernel_isolate) {
- if (!dfe.UseDartFrontend()) {
- *error = strdup("Kernel isolate not supported.");
- return NULL;
- }
- script_uri = dfe.frontend_filename();
- if (packages_config == NULL) {
- packages_config = commandline_packages_file;
- }
- }
- 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);
- }
- }
- const bool is_service_isolate =
- strcmp(script_uri, DART_VM_SERVICE_ISOLATE_NAME) == 0;
- if (!is_kernel_isolate && !is_service_isolate) {
- const uint8_t* platform_file = NULL;
- if (dfe.UsePlatformBinary()) {
- intptr_t platform_length = -1;
- bool success = dfe.TryReadKernelFile(dfe.platform_binary_filename(),
- &platform_file, &platform_length);
- if (!success) {
- *error = strdup("The platform binary is not a valid Dart Kernel file.");
- *exit_code = kErrorExitCode;
- return NULL;
- }
- kernel_platform = Dart_ReadKernelBinary(platform_file, platform_length);
- }
-
- bool is_kernel = false;
- const uint8_t* kernel_file = NULL;
- intptr_t kernel_length = -1;
- if (dfe.UseDartFrontend()) {
- Dart_KernelCompilationResult result = Dart_CompileToKernel(script_uri);
- *error = result.error; // Copy error message (if any).
- switch (result.status) {
- case Dart_KernelCompilationStatus_Ok:
- is_kernel = true;
- kernel_file = result.kernel;
- kernel_length = result.kernel_size;
- break;
- case Dart_KernelCompilationStatus_Error:
- *exit_code = kCompilationErrorExitCode;
- break;
- case Dart_KernelCompilationStatus_Crash:
- *exit_code = kDartFrontendErrorExitCode;
- break;
- case Dart_KernelCompilationStatus_Unknown:
- *exit_code = kErrorExitCode;
- break;
- }
- if (!is_kernel) {
- free(const_cast<uint8_t*>(platform_file));
- delete reinterpret_cast<kernel::Program*>(kernel_platform);
- return NULL;
- }
- } else if (!isolate_run_app_snapshot) {
- is_kernel =
- dfe.TryReadKernelFile(script_uri, &kernel_file, &kernel_length);
- }
-
- if (is_kernel) {
- kernel_program = Dart_ReadKernelBinary(kernel_file, kernel_length);
- }
- }
-#endif // !defined(DART_PRECOMPILED_RUNTIME)
-
- IsolateData* isolate_data =
- new IsolateData(script_uri, package_root, packages_config, app_snapshot);
- if (is_main_isolate && (snapshot_deps_filename != NULL)) {
- isolate_data->set_dependencies(new MallocGrowableArray<char*>());
- }
- Dart_Isolate isolate = NULL;
- if (kernel_platform != NULL) {
- isolate = Dart_CreateIsolateFromKernel(script_uri, main, kernel_platform,
- flags, isolate_data, error);
- } else if (kernel_program != NULL) {
- isolate = Dart_CreateIsolateFromKernel(script_uri, main, kernel_program,
- flags, isolate_data, error);
- } else {
- isolate = Dart_CreateIsolate(script_uri, main, isolate_snapshot_data,
- isolate_snapshot_instructions, flags,
- isolate_data, error);
- }
- if (isolate == NULL) {
- delete isolate_data;
- return NULL;
- }
+static Dart_Isolate IsolateSetupHelper(Dart_Isolate isolate,
+ bool is_main_isolate,
+ const char* script_uri,
+ const char* package_root,
+ const char* packages_config,
+ void* kernel_program,
+ bool set_native_resolvers,
+ bool isolate_run_app_snapshot,
+ char** error,
+ int* exit_code) {
Dart_EnterScope();
// Set up the library tag handler for this isolate.
@@ -967,7 +846,7 @@ static Dart_Isolate CreateIsolateAndSetupHelper(bool is_main_isolate,
Dart_Handle result = Dart_LoadKernel(kernel_program);
CHECK_RESULT(result);
}
- if ((kernel_platform != NULL) || (isolate_snapshot_data != NULL)) {
+ if (set_native_resolvers) {
// Setup the native resolver as the snapshot does not carry it.
Builtin::SetNativeResolver(Builtin::kBuiltinLibrary);
Builtin::SetNativeResolver(Builtin::kIOLibrary);
@@ -977,26 +856,6 @@ static Dart_Isolate CreateIsolateAndSetupHelper(bool is_main_isolate,
CHECK_RESULT(result);
}
- if (Dart_IsServiceIsolate(isolate)) {
- // If this is the service isolate, load embedder specific bits and return.
- bool skip_library_load = isolate_run_app_snapshot;
- if (!VmService::Setup(vm_service_server_ip, vm_service_server_port,
- skip_library_load, vm_service_dev_mode,
- trace_loading)) {
- *error = strdup(VmService::GetErrorMessage());
- return NULL;
- }
- if (compile_all) {
- result = Dart_CompileAll();
- CHECK_RESULT(result);
- }
- result = Dart_SetEnvironmentCallback(EnvironmentCallback);
- CHECK_RESULT(result);
- Dart_ExitScope();
- Dart_ExitIsolate();
- return isolate;
- }
-
// Prepare builtin and other core libraries for use to resolve URIs.
// Set up various closures, e.g: printing, timers etc.
// Set up 'package root' for URI resolution.
@@ -1070,6 +929,241 @@ static Dart_Isolate CreateIsolateAndSetupHelper(bool is_main_isolate,
return isolate;
}
+
+#if !defined(DART_PRECOMPILED_RUNTIME)
+// 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 sources which are compiled by the
+// VM parser.
+static Dart_Isolate CreateAndSetupKernelIsolate(const char* main,
+ const char* package_root,
+ const char* packages_config,
+ Dart_IsolateFlags* flags,
+ char** error,
+ int* exit_code) {
+ if (!dfe.UseDartFrontend()) {
+ *error = strdup("Kernel isolate not supported.");
+ return NULL;
+ }
+ const char* script_uri = dfe.frontend_filename();
+ if (packages_config == NULL) {
+ packages_config = commandline_packages_file;
+ }
+
+ // Kernel isolate uses an app snapshot or 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;
+ AppSnapshot* 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);
+ }
+
+ IsolateData* isolate_data =
+ new IsolateData(script_uri, package_root, packages_config, app_snapshot);
+ Dart_Isolate isolate = Dart_CreateIsolate(
+ script_uri, main, isolate_snapshot_data, isolate_snapshot_instructions,
+ flags, isolate_data, error);
+ if (isolate == NULL) {
+ delete isolate_data;
+ return NULL;
+ }
+
+ return IsolateSetupHelper(isolate, false, script_uri, package_root,
+ packages_config, NULL, isolate_snapshot_data,
+ isolate_run_app_snapshot, error, exit_code);
+}
+#endif // !defined(DART_PRECOMPILED_RUNTIME)
+
+
+// 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* main,
+ const char* package_root,
+ const char* packages_config,
+ Dart_IsolateFlags* flags,
+ char** error,
+ int* exit_code) {
+ ASSERT(script_uri != 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;
+#else
+ // JIT: Service isolate uses 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;
+#endif // !defined(DART_PRECOMPILED_RUNTIME)
+
+ IsolateData* isolate_data =
+ new IsolateData(script_uri, package_root, packages_config, NULL);
+ Dart_Isolate isolate = Dart_CreateIsolate(
+ script_uri, main, isolate_snapshot_data, isolate_snapshot_instructions,
+ flags, isolate_data, error);
+ if (isolate == NULL) {
+ delete isolate_data;
+ return NULL;
+ }
+
+ Dart_EnterScope();
+
+ Dart_Handle result = Dart_SetLibraryTagHandler(Loader::LibraryTagHandler);
+ CHECK_RESULT(result);
+
+ // Load embedder specific bits and return.
+ bool skip_library_load = isolate_run_app_snapshot;
+ if (!VmService::Setup(vm_service_server_ip, vm_service_server_port,
+ skip_library_load, vm_service_dev_mode,
+ trace_loading)) {
+ *error = strdup(VmService::GetErrorMessage());
+ return NULL;
+ }
+ if (compile_all) {
+ result = Dart_CompileAll();
+ CHECK_RESULT(result);
+ }
+ result = Dart_SetEnvironmentCallback(EnvironmentCallback);
+ CHECK_RESULT(result);
+ Dart_ExitScope();
+ Dart_ExitIsolate();
+ return isolate;
+}
+
+
+// Returns newly created Isolate on success, NULL on failure.
+static Dart_Isolate CreateIsolateAndSetupHelper(bool is_main_isolate,
+ const char* script_uri,
+ const char* main,
+ const char* package_root,
+ const char* packages_config,
+ Dart_IsolateFlags* flags,
+ char** error,
+ int* exit_code) {
+ ASSERT(script_uri != NULL);
+ void* kernel_platform = NULL;
+ void* kernel_program = NULL;
+ 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;
+#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);
+ }
+ }
+ const uint8_t* platform_file = NULL;
+ if (dfe.UsePlatformBinary()) {
+ intptr_t platform_length = -1;
+ bool success = dfe.TryReadKernelFile(dfe.platform_binary_filename(),
+ &platform_file, &platform_length);
+ if (!success) {
+ *error = strdup("The platform binary is not a valid Dart Kernel file.");
+ *exit_code = kErrorExitCode;
+ return NULL;
+ }
+ kernel_platform = Dart_ReadKernelBinary(platform_file, platform_length);
+ }
+
+ bool is_kernel = false;
+ const uint8_t* kernel_file = NULL;
+ intptr_t kernel_length = -1;
+ if (dfe.UseDartFrontend()) {
+ Dart_KernelCompilationResult result = Dart_CompileToKernel(script_uri);
+ *error = result.error; // Copy error message (if any).
+ switch (result.status) {
+ case Dart_KernelCompilationStatus_Ok:
+ is_kernel = true;
+ kernel_file = result.kernel;
+ kernel_length = result.kernel_size;
+ break;
+ case Dart_KernelCompilationStatus_Error:
+ *exit_code = kCompilationErrorExitCode;
+ break;
+ case Dart_KernelCompilationStatus_Crash:
+ *exit_code = kDartFrontendErrorExitCode;
+ break;
+ case Dart_KernelCompilationStatus_Unknown:
+ *exit_code = kErrorExitCode;
+ break;
+ }
+ if (!is_kernel) {
+ free(const_cast<uint8_t*>(platform_file));
+ delete reinterpret_cast<kernel::Program*>(kernel_platform);
+ return NULL;
+ }
+ } else if (!isolate_run_app_snapshot) {
+ is_kernel = dfe.TryReadKernelFile(script_uri, &kernel_file, &kernel_length);
+ }
+
+ if (is_kernel) {
+ kernel_program = Dart_ReadKernelBinary(kernel_file, kernel_length);
+ }
+#endif // !defined(DART_PRECOMPILED_RUNTIME)
+
+ IsolateData* isolate_data =
+ new IsolateData(script_uri, package_root, packages_config, app_snapshot);
+ if (is_main_isolate && (snapshot_deps_filename != NULL)) {
+ isolate_data->set_dependencies(new MallocGrowableArray<char*>());
+ }
+ Dart_Isolate isolate = NULL;
+ if (kernel_platform != NULL) {
+ isolate = Dart_CreateIsolateFromKernel(script_uri, main, kernel_platform,
+ flags, isolate_data, error);
+ } else if (kernel_program != NULL) {
+ isolate = Dart_CreateIsolateFromKernel(script_uri, main, kernel_program,
+ flags, isolate_data, error);
+ } else {
+ isolate = Dart_CreateIsolate(script_uri, main, isolate_snapshot_data,
+ isolate_snapshot_instructions, flags,
+ isolate_data, error);
+ }
+ if (isolate == NULL) {
+ delete isolate_data;
+ return NULL;
+ }
+
+ return IsolateSetupHelper(isolate, is_main_isolate, script_uri, package_root,
+ packages_config, kernel_program,
+ (kernel_program || isolate_snapshot_data),
+ isolate_run_app_snapshot, error, exit_code);
+}
+
#undef CHECK_RESULT
@@ -1090,8 +1184,19 @@ static Dart_Isolate CreateIsolateAndSetup(const char* script_uri,
return NULL;
}
- bool is_main_isolate = false;
int exit_code = 0;
+#if !defined(DART_PRECOMPILED_RUNTIME)
+ if (strcmp(script_uri, DART_KERNEL_ISOLATE_NAME) == 0) {
+ return CreateAndSetupKernelIsolate(main, package_root, package_config,
+ flags, error, &exit_code);
+ }
+#endif
+ if (strcmp(script_uri, DART_VM_SERVICE_ISOLATE_NAME) == 0) {
+ return CreateAndSetupServiceIsolate(script_uri, main, package_root,
+ package_config, flags, error,
+ &exit_code);
+ }
+ bool is_main_isolate = false;
return CreateIsolateAndSetupHelper(is_main_isolate, script_uri, main,
package_root, package_config, flags, error,
&exit_code);
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