johnmccutchan@google.com b3f2fb14d0 Reduce CPU usage when no isolates need to be profiled (e.g. when an isolate calls readLineSync or sleep the isolate owns the thread but is blocked). ...

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

2014-05-26 11:53:49 +00:00

..

dart_api.h

Reduce CPU usage when no isolates need to be profiled (e.g. when an isolate calls readLineSync or sleep the isolate owns the thread but is blocked).

2014-05-26 11:53:49 +00:00

dart_debugger_api.h

Support evaluation of expressions in context of a stack frame

2014-04-23 22:56:23 +00:00

dart_mirrors_api.h

Fix to asiva's code review comments on TBR Cl.

2013-10-28 20:23:19 +00:00

dart_native_api.h

First round of http://dartbug.com/15922:

2014-01-16 05:05:35 +00:00