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
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "bin/builtin.h"
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#include "bin/dartutils.h"
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#include "bin/utils.h"
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#include "bin/stdio.h"
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#include "platform/globals.h"
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#include "platform/thread.h"
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#include "platform/utils.h"
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#include "include/dart_api.h"
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namespace dart {
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namespace bin {
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void FUNCTION_NAME(Stdin_ReadByte)(Dart_NativeArguments args) {
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ScopedBlockingCall blocker;
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Dart_SetReturnValue(args, Dart_NewInteger(Stdin::ReadByte()));
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}
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void FUNCTION_NAME(Stdin_GetEchoMode)(Dart_NativeArguments args) {
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Dart_SetReturnValue(args, Dart_NewBoolean(Stdin::GetEchoMode()));
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}
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void FUNCTION_NAME(Stdin_SetEchoMode)(Dart_NativeArguments args) {
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bool enabled = DartUtils::GetBooleanValue(Dart_GetNativeArgument(args, 0));
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Stdin::SetEchoMode(enabled);
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}
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void FUNCTION_NAME(Stdin_GetLineMode)(Dart_NativeArguments args) {
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Dart_SetReturnValue(args, Dart_NewBoolean(Stdin::GetLineMode()));
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}
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void FUNCTION_NAME(Stdin_SetLineMode)(Dart_NativeArguments args) {
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bool enabled = DartUtils::GetBooleanValue(Dart_GetNativeArgument(args, 0));
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Stdin::SetLineMode(enabled);
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}
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void FUNCTION_NAME(Stdout_GetTerminalSize)(Dart_NativeArguments args) {
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int size[2];
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if (Stdout::GetTerminalSize(size)) {
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Dart_Handle list = Dart_NewList(2);
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Dart_ListSetAt(list, 0, Dart_NewInteger(size[0]));
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Dart_ListSetAt(list, 1, Dart_NewInteger(size[1]));
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Dart_SetReturnValue(args, list);
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} else {
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Dart_SetReturnValue(args, DartUtils::NewDartOSError());
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}
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}
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} // namespace bin
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} // namespace dart
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