johnmccutchan@google.com
b3f2fb14d0
This CL does the following: - Introduces two new API entry points: Dart_IsolateBlocked and Dart_IsolateUnblocked. - The thread interrupter thread goes into a deep sleep if no isolates need to be profiled (not scheduled on a thread or are in a blocking call). - When an isolate unblocks, the thread interrupter thread resumes regular interrupts. - dart:io readLineSync and sleep mark that they are making a blocking call. This fixes https://code.google.com/p/dart/issues/detail?id=18126 reducing CPU usage to 0% when waiting for stdin or sleeping. R=ajohnsen@google.com, iposva@google.com Review URL: https://codereview.chromium.org//297183003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@36632 260f80e4-7a28-3924-810f-c04153c831b5
561 lines
20 KiB
C++
561 lines
20 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef BIN_DARTUTILS_H_
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#define BIN_DARTUTILS_H_
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#include "include/dart_api.h"
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#include "include/dart_native_api.h"
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#include "platform/assert.h"
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#include "platform/globals.h"
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namespace dart {
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namespace bin {
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// Forward declarations.
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class File;
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class OSError;
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/* Handles error handles returned from Dart API functions. If a value
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* is an error, uses Dart_PropagateError to throw it to the enclosing
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* Dart activation. Otherwise, returns the original handle.
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*
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* This function can be used to wrap most API functions, but API
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* functions can also be nested without this error check, since all
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* API functions return any error handles passed in as arguments, unchanged.
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*/
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static inline Dart_Handle ThrowIfError(Dart_Handle handle) {
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if (Dart_IsError(handle)) Dart_PropagateError(handle);
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return handle;
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}
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class CommandLineOptions {
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public:
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explicit CommandLineOptions(int max_count)
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: count_(0), max_count_(max_count), arguments_(NULL) {
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static const int kWordSize = sizeof(intptr_t);
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arguments_ = reinterpret_cast<const char **>(malloc(max_count * kWordSize));
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if (arguments_ == NULL) {
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max_count_ = 0;
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}
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}
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~CommandLineOptions() {
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free(arguments_);
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count_ = 0;
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max_count_ = 0;
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arguments_ = NULL;
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}
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int count() const { return count_; }
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const char** arguments() const { return arguments_; }
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const char* GetArgument(int index) const {
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return (index >= 0 && index < count_) ? arguments_[index] : NULL;
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}
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void AddArgument(const char* argument) {
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if (count_ < max_count_) {
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arguments_[count_] = argument;
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count_ += 1;
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} else {
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abort(); // We should never get into this situation.
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}
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}
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void operator delete(void* pointer) { abort(); }
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private:
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void* operator new(size_t size);
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int count_;
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int max_count_;
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const char** arguments_;
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DISALLOW_COPY_AND_ASSIGN(CommandLineOptions);
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};
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class DartUtils {
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public:
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// Returns the integer value of a Dart object. If the object is not
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// an integer value an API error is propagated.
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static int64_t GetIntegerValue(Dart_Handle value_obj);
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// Returns the integer value of a Dart object. If the object is not
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// an integer value or outside the requested range an API error is
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// propagated.
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static int64_t GetInt64ValueCheckRange(
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Dart_Handle value_obj, int64_t lower, int64_t upper);
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// Returns the intptr_t value of a Dart object. If the object is not
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// an integer value or the value is outside the intptr_t range an
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// API error is propagated.
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static intptr_t GetIntptrValue(Dart_Handle value_obj);
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// Checks that the value object is an integer object that fits in a
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// signed 64-bit integer. If it is, the value is returned in the
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// value out parameter and true is returned. Otherwise, false is
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// returned.
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static bool GetInt64Value(Dart_Handle value_obj, int64_t* value);
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// Returns the string value of a Dart object. If the object is not
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// a string value an API error is propagated.
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static const char* GetStringValue(Dart_Handle str_obj);
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// Returns the boolean value of a Dart object. If the object is not
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// a boolean value an API error is propagated.
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static bool GetBooleanValue(Dart_Handle bool_obj);
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static void SetIntegerField(Dart_Handle handle,
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const char* name,
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int64_t val);
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static void SetStringField(Dart_Handle handle,
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const char* name,
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const char* val);
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static bool IsDartSchemeURL(const char* url_name);
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static bool IsDartExtensionSchemeURL(const char* url_name);
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static bool IsDartIOLibURL(const char* url_name);
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static bool IsDartBuiltinLibURL(const char* url_name);
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static bool IsHttpSchemeURL(const char* url_name);
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static void* OpenFile(const char* name, bool write);
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static void ReadFile(const uint8_t** data, intptr_t* file_len, void* stream);
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static void WriteFile(const void* buffer, intptr_t num_bytes, void* stream);
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static void CloseFile(void* stream);
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static bool EntropySource(uint8_t* buffer, intptr_t length);
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static Dart_Handle ReadStringFromFile(const char* filename);
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static Dart_Handle ReadStringFromHttp(const char* filename);
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static Dart_Handle LibraryTagHandler(Dart_LibraryTag tag,
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Dart_Handle library,
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Dart_Handle url);
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static Dart_Handle LoadScript(const char* script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle LoadScriptHttp(Dart_Handle script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle LoadSource(Dart_Handle library,
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Dart_Handle url,
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Dart_LibraryTag tag,
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const char* filename);
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static Dart_Handle PrepareForScriptLoading(const char* package_root,
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Dart_Handle builtin_lib);
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static bool PostNull(Dart_Port port_id);
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static bool PostInt32(Dart_Port port_id, int32_t value);
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static bool PostInt64(Dart_Port port_id, int64_t value);
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static Dart_Handle GetDartType(const char* library_url,
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const char* class_name);
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// Create a new Dart OSError object with the current OS error.
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static Dart_Handle NewDartOSError();
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// Create a new Dart OSError object with the provided OS error.
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static Dart_Handle NewDartOSError(OSError* os_error);
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static Dart_Handle NewDartExceptionWithOSError(const char* library_url,
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const char* exception_name,
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const char* message,
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Dart_Handle os_error);
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static Dart_Handle NewDartExceptionWithMessage(const char* library_url,
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const char* exception_name,
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const char* message);
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static Dart_Handle NewDartArgumentError(const char* message);
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static Dart_Handle NewDartIOException(const char* exception_name,
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const char* message,
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Dart_Handle os_error);
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// Create a new Dart String object from a C String.
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static Dart_Handle NewString(const char* str) {
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ASSERT(str != NULL);
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return Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(str),
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strlen(str));
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}
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// Create a new Dart InternalError object with the provided message.
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static Dart_Handle NewError(const char* format, ...);
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static Dart_Handle NewInternalError(const char* message);
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static bool SetOriginalWorkingDirectory();
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static const char* MapLibraryUrl(CommandLineOptions* url_mapping,
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const char* url_string);
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static Dart_Handle SetWorkingDirectory(Dart_Handle builtin_lib);
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static Dart_Handle ResolveScriptUri(Dart_Handle script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle FilePathFromUri(Dart_Handle script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle ExtensionPathFromUri(Dart_Handle extension_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle ResolveUri(Dart_Handle library_url,
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Dart_Handle url,
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Dart_Handle builtin_lib);
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static Dart_Handle LoadScriptDataAsync(Dart_Handle script_uri,
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Dart_Handle builtin_lib);
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// Sniffs the specified text_buffer to see if it contains the magic number
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// representing a script snapshot. If the text_buffer is a script snapshot
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// the return value is an updated pointer to the text_buffer pointing past
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// the magic number value. The 'buffer_len' parameter is also appropriately
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// adjusted.
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static const uint8_t* SniffForMagicNumber(const uint8_t* text_buffer,
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intptr_t* buffer_len,
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bool* is_snapshot);
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// Write a magic number to indicate a script snapshot file.
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static void WriteMagicNumber(File* file);
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// Global state that stores the original working directory..
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static const char* original_working_directory;
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static const char* kDartScheme;
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static const char* kDartExtensionScheme;
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static const char* kAsyncLibURL;
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static const char* kBuiltinLibURL;
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static const char* kCoreLibURL;
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static const char* kInternalLibURL;
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static const char* kIsolateLibURL;
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static const char* kIOLibURL;
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static const char* kIOLibPatchURL;
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static const char* kUriLibURL;
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static const char* kHttpScheme;
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static const char* kVMServiceLibURL;
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static uint8_t magic_number[];
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private:
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DISALLOW_ALLOCATION();
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DISALLOW_IMPLICIT_CONSTRUCTORS(DartUtils);
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};
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class CObject {
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public:
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// These match the constants in sdk/lib/io/common.dart.
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static const int kSuccess = 0;
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static const int kArgumentError = 1;
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static const int kOSError = 2;
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static const int kFileClosedError = 3;
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explicit CObject(Dart_CObject *cobject) : cobject_(cobject) {}
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Dart_CObject_Type type() { return cobject_->type; }
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Dart_TypedData_Type byte_array_type() {
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ASSERT(type() == Dart_CObject_kTypedData ||
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type() == Dart_CObject_kExternalTypedData);
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return cobject_->value.as_typed_data.type;
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}
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bool IsNull() { return type() == Dart_CObject_kNull; }
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bool IsBool() { return type() == Dart_CObject_kBool; }
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bool IsInt32() { return type() == Dart_CObject_kInt32; }
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bool IsInt64() { return type() == Dart_CObject_kInt64; }
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bool IsInt32OrInt64() { return IsInt32() || IsInt64(); }
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bool IsIntptr() { return IsInt32OrInt64(); }
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bool IsBigint() { return type() == Dart_CObject_kBigint; }
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bool IsDouble() { return type() == Dart_CObject_kDouble; }
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bool IsString() { return type() == Dart_CObject_kString; }
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bool IsArray() { return type() == Dart_CObject_kArray; }
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bool IsTypedData() { return type() == Dart_CObject_kTypedData; }
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bool IsUint8Array() {
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return type() == Dart_CObject_kTypedData &&
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byte_array_type() == Dart_TypedData_kUint8;
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}
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bool IsSendPort() { return type() == Dart_CObject_kSendPort; }
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bool IsTrue() {
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return type() == Dart_CObject_kBool && cobject_->value.as_bool;
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}
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bool IsFalse() {
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return type() == Dart_CObject_kBool && !cobject_->value.as_bool;
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}
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void* operator new(size_t size) {
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return Dart_ScopeAllocate(size);
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}
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static CObject* Null();
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static CObject* True();
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static CObject* False();
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static CObject* Bool(bool value);
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static Dart_CObject* NewInt32(int32_t value);
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static Dart_CObject* NewInt64(int64_t value);
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static Dart_CObject* NewIntptr(intptr_t value);
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// TODO(sgjesse): Add support for kBigint.
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static Dart_CObject* NewDouble(double value);
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static Dart_CObject* NewString(intptr_t length);
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static Dart_CObject* NewString(const char* str);
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static Dart_CObject* NewArray(intptr_t length);
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static Dart_CObject* NewUint8Array(intptr_t length);
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static Dart_CObject* NewExternalUint8Array(
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intptr_t length, uint8_t* data, void* peer,
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Dart_WeakPersistentHandleFinalizer callback);
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static Dart_CObject* NewIOBuffer(int64_t length);
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static void FreeIOBufferData(Dart_CObject* object);
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Dart_CObject* AsApiCObject() { return cobject_; }
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// Create a new CObject array with an illegal arguments error.
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static CObject* IllegalArgumentError();
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// Create a new CObject array with a file closed error.
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static CObject* FileClosedError();
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// Create a new CObject array with the current OS error.
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static CObject* NewOSError();
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// Create a new CObject array with the specified OS error.
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static CObject* NewOSError(OSError* os_error);
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protected:
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CObject() : cobject_(NULL) {}
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Dart_CObject* cobject_;
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private:
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static Dart_CObject* New(Dart_CObject_Type type, int additional_bytes = 0);
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static Dart_CObject api_null_;
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static Dart_CObject api_true_;
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static Dart_CObject api_false_;
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static CObject null_;
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static CObject true_;
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static CObject false_;
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private:
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DISALLOW_COPY_AND_ASSIGN(CObject);
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};
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#define DECLARE_COBJECT_CONSTRUCTORS(t) \
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explicit CObject##t(Dart_CObject *cobject) : CObject(cobject) { \
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ASSERT(type() == Dart_CObject_k##t); \
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cobject_ = cobject; \
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} \
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explicit CObject##t(CObject* cobject) : CObject() { \
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ASSERT(cobject != NULL); \
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ASSERT(cobject->type() == Dart_CObject_k##t); \
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cobject_ = cobject->AsApiCObject(); \
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} \
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#define DECLARE_COBJECT_TYPED_DATA_CONSTRUCTORS(t) \
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explicit CObject##t##Array(Dart_CObject *cobject) : CObject(cobject) { \
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ASSERT(type() == Dart_CObject_kTypedData); \
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ASSERT(byte_array_type() == Dart_TypedData_k##t); \
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cobject_ = cobject; \
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} \
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explicit CObject##t##Array(CObject* cobject) : CObject() { \
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ASSERT(cobject != NULL); \
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ASSERT(cobject->type() == Dart_CObject_kTypedData); \
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ASSERT(cobject->byte_array_type() == Dart_TypedData_k##t); \
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cobject_ = cobject->AsApiCObject(); \
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} \
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#define DECLARE_COBJECT_EXTERNAL_TYPED_DATA_CONSTRUCTORS(t) \
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explicit CObjectExternal##t##Array(Dart_CObject *cobject) \
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: CObject(cobject) { \
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ASSERT(type() == Dart_CObject_kExternalTypedData); \
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ASSERT(byte_array_type() == Dart_TypedData_k##t); \
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cobject_ = cobject; \
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} \
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explicit CObjectExternal##t##Array(CObject* cobject) : CObject() { \
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ASSERT(cobject != NULL); \
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ASSERT(cobject->type() == Dart_CObject_kExternalTypedData); \
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ASSERT(cobject->byte_array_type() == Dart_TypedData_k##t); \
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cobject_ = cobject->AsApiCObject(); \
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} \
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class CObjectBool : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Bool)
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bool Value() const { return cobject_->value.as_bool; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectBool);
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};
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class CObjectInt32 : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Int32)
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int32_t Value() const { return cobject_->value.as_int32; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectInt32);
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};
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class CObjectInt64 : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Int64)
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int64_t Value() const { return cobject_->value.as_int64; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectInt64);
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};
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class CObjectIntptr : public CObject {
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public:
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explicit CObjectIntptr(Dart_CObject *cobject) : CObject(cobject) {
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ASSERT(type() == Dart_CObject_kInt32 || type() == Dart_CObject_kInt64);
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cobject_ = cobject;
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}
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explicit CObjectIntptr(CObject* cobject) : CObject() {
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ASSERT(cobject != NULL);
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ASSERT(cobject->type() == Dart_CObject_kInt64 ||
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cobject->type() == Dart_CObject_kInt32);
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cobject_ = cobject->AsApiCObject();
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}
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intptr_t Value() {
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intptr_t result;
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if (type() == Dart_CObject_kInt32) {
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result = cobject_->value.as_int32;
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} else {
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ASSERT(sizeof(result) == 8);
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result = static_cast<intptr_t>(cobject_->value.as_int64);
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}
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return result;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectIntptr);
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};
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class CObjectBigint : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Bigint)
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char* Value() const { return cobject_->value.as_bigint; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectBigint);
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};
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class CObjectDouble : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Double)
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double Value() const { return cobject_->value.as_double; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectDouble);
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};
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class CObjectString : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(String)
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intptr_t Length() const { return strlen(cobject_->value.as_string); }
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char* CString() const { return cobject_->value.as_string; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectString);
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};
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class CObjectArray : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Array)
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intptr_t Length() const { return cobject_->value.as_array.length; }
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CObject* operator[](intptr_t index) const {
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return new CObject(cobject_->value.as_array.values[index]);
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}
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void SetAt(intptr_t index, CObject* value) {
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cobject_->value.as_array.values[index] = value->AsApiCObject();
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectArray);
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};
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class CObjectSendPort : public CObject {
|
|
public:
|
|
DECLARE_COBJECT_CONSTRUCTORS(SendPort)
|
|
|
|
Dart_Port Value() const { return cobject_->value.as_send_port; }
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(CObjectSendPort);
|
|
};
|
|
|
|
|
|
class CObjectTypedData : public CObject {
|
|
public:
|
|
explicit CObjectTypedData(Dart_CObject *cobject) : CObject(cobject) {
|
|
ASSERT(type() == Dart_CObject_kTypedData);
|
|
cobject_ = cobject;
|
|
}
|
|
explicit CObjectTypedData(CObject* cobject) : CObject() {
|
|
ASSERT(cobject != NULL);
|
|
ASSERT(cobject->type() == Dart_CObject_kTypedData);
|
|
cobject_ = cobject->AsApiCObject();
|
|
}
|
|
|
|
Dart_TypedData_Type Type() const {
|
|
return cobject_->value.as_typed_data.type;
|
|
}
|
|
intptr_t Length() const { return cobject_->value.as_typed_data.length; }
|
|
uint8_t* Buffer() const { return cobject_->value.as_typed_data.values; }
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(CObjectTypedData);
|
|
};
|
|
|
|
|
|
class CObjectUint8Array : public CObject {
|
|
public:
|
|
DECLARE_COBJECT_TYPED_DATA_CONSTRUCTORS(Uint8)
|
|
|
|
intptr_t Length() const { return cobject_->value.as_typed_data.length; }
|
|
uint8_t* Buffer() const { return cobject_->value.as_typed_data.values; }
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(CObjectUint8Array);
|
|
};
|
|
|
|
|
|
class CObjectExternalUint8Array : public CObject {
|
|
public:
|
|
DECLARE_COBJECT_EXTERNAL_TYPED_DATA_CONSTRUCTORS(Uint8)
|
|
|
|
intptr_t Length() const {
|
|
return cobject_->value.as_external_typed_data.length;
|
|
}
|
|
void SetLength(intptr_t length) {
|
|
cobject_->value.as_external_typed_data.length = length;
|
|
}
|
|
uint8_t* Data() const { return cobject_->value.as_external_typed_data.data; }
|
|
void* Peer() const { return cobject_->value.as_external_typed_data.peer; }
|
|
Dart_WeakPersistentHandleFinalizer Callback() const {
|
|
return cobject_->value.as_external_typed_data.callback;
|
|
}
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
|
|
};
|
|
|
|
|
|
class ScopedBlockingCall {
|
|
public:
|
|
ScopedBlockingCall() {
|
|
Dart_IsolateBlocked();
|
|
}
|
|
|
|
~ScopedBlockingCall() {
|
|
Dart_IsolateUnblocked();
|
|
}
|
|
};
|
|
|
|
} // namespace bin
|
|
} // namespace dart
|
|
|
|
#endif // BIN_DARTUTILS_H_
|