c7e9e048ed
Rename Thread -> OSThread.
...
It's a collection of static utility methods for primitive operations on OS threads.
Make room in the namespace for upcoming class that will represent all the complex state of a VM thread.
Review URL: https://codereview.chromium.org//796063006
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@42895 260f80e4-7a28-3924-810f-c04153c831b5
2015-01-15 02:30:07 +00:00
816bf5af2e
Fixes for the profiler on arm64.
...
On arm64, in Dart code, R18(SP) is the stack pointer.
In C++ code, R31(CSP) is the stack pointer.
The profiler must choose the right one when performing
its bounds checks.
This change also fixes a bug in the InvokeDartCode stub
on arm64 so that CSP is set to the Isolate's stack
limit immediately, rather than a bit later. When it was
set a bit later, if a profiler interrupt came in in the
interim, the stack would be smashed.
R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org//583683002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@40502 260f80e4-7a28-3924-810f-c04153c831b5
2014-09-19 16:25:16 +00:00
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
182fcd0921
Add isolate tag-profile model and UI.
...
Distinction between a Dart Error and a ServiceError/ServiceException.
Better Observatory behaviour when a ServiceError/ServiceExceptions occurs.
Display isolate's sticky error.
R=turnidge@google.com
Review URL: https://codereview.chromium.org//205713004
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34377 260f80e4-7a28-3924-810f-c04153c831b5
2014-03-25 18:09:02 +00:00
86c55f4fde
Keep list of existing isolates.
...
List is only updated when isolates are created / destroyed.
ThreadInterrupter now walks list of isolates.
Scheduling an isolate for interrupts is now lockless.
Setting a current isolate is now lockless.
Working on Linux, Mac, and Windows.
Assert that the isolate isn't on two threads at once.
R=asiva@google.com
Review URL: https://codereview.chromium.org//128653004
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32439 260f80e4-7a28-3924-810f-c04153c831b5
2014-02-07 17:43:21 +00:00
919dc2d6eb
* Introduce ThreadInterrupter which calls a TLS set callback when thread is interrupted.
...
* Threads can only register and unregister themselves with ThreadInterrupter.
* Profiler is no longer involved in interrupting threads. It's just a callback and the buffer.
* Profiler operates lock free using an atomic operation to reserve sample in sample buffer.
* Linux, Mac, and Windows done.
R=asiva@google.com
Review URL: https://codereview.chromium.org//109803002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31170 260f80e4-7a28-3924-810f-c04153c831b5
2013-12-16 18:52:15 +00:00
koda@google.com