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45 Commits

Author SHA1 Message Date
Alexander Aprelev 8ce78ca107 [vm/msan] Fix msan error triggered when building debug gen_snapshot. 
Fixes https://github.com/dart-lang/sdk/issues/43433.

Change-Id: Ia7558251ab7a6115c3e0092ad57011e7e1f42340
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/163722
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
 2020-09-21 19:42:42 +00:00
Martin Kustermann 3d53df52af Revert "[vm] Call OSThread::Cleanup() during VM shutdown (as with all other Init/Cleanup functions)" 
See b/157883819: Custom embedder doesn't correctly join threads that
interacted with Dart API, which causes us to hit the newly added
RELEASE_ASSERT.

This reverts commit ea4b17533c.

Change-Id: I9fec45196646f67ae46efccc2f83a43e8941a626
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149592
Reviewed-by: David Morgan <davidmorgan@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
 2020-06-02 13:25:01 +00:00
Martin Kustermann ea4b17533c [vm] Call OSThread::Cleanup() during VM shutdown (as with all other Init/Cleanup functions) 
Change-Id: I3cfa51714247a62fe39951636ca1a75c34f6c95b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149293
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
 2020-05-29 08:02:59 +00:00
Ryan Macnak 16253c0a54 [vm] Fix LSAN when used without ASAN. 
Mostly interesting on Mac, where ASAN does not include LSAN.

Bug: https://github.com/dart-lang/sdk/issues/41811
Change-Id: Icbbe57946a6d3b3406a9e3a6541b6c4958cbfa91
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147685
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2020-05-12 17:38:19 +00:00
Ryan Macnak c873220e43 [vm, arm64] Adjust CSP during the invocation stub instead of each function prologue. 
Since 6e2c4636cd, we have more reliable information about the stack limit.

This saves 8 bytes from each function.

Flutter Gallery:
Instructions(CodeSize): 6491472 ->  6375472 (-1.79%)
Total(CodeSize):       10375882 -> 10258802 (-1.13%)

Bug: https://github.com/dart-lang/sdk/issues/26472
Bug: https://github.com/dart-lang/sdk/issues/39083
Change-Id: I1d8e4c4bfd858eca1d0e4e5640faae15f4dbbe8e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122845
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
 2019-10-25 19:21:56 +00:00
Ryan Macnak 86af66a3ee Revert "[vm, arm64] Adjust CSP during the invocation stub instead of each function prologue." 
This reverts commit b5b322962a.

Reason for revert: low frequency of crashes in service tests

Original change's description:
> [vm, arm64] Adjust CSP during the invocation stub instead of each function prologue.
> 
> Since 6e2c4636cd, we have more reliable information about the stack limit.
> 
> This saves 8 bytes from each function.
> 
> Flutter Gallery:
> Instructions(CodeSize): 6491472 ->  6375472 (-1.79%)
> Total(CodeSize):       10375882 -> 10258802 (-1.13%)
> 
> Bug: http://dartbug.com/26472
> Change-Id: Ief1ddd25eecd32a8314c71fdb470dd73046e5dc0
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122408
> Commit-Queue: Ryan Macnak <rmacnak@google.com>
> Reviewed-by: Alexander Markov <alexmarkov@google.com>

TBR=rmacnak@google.com,alexmarkov@google.com,ajcbik@google.com

Change-Id: I0b45e1c81c1534e123dd85d27b7af27217e08795
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: http://dartbug.com/26472
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122725
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2019-10-24 04:12:16 +00:00
Ryan Macnak b5b322962a [vm, arm64] Adjust CSP during the invocation stub instead of each function prologue. 
Since 6e2c4636cd, we have more reliable information about the stack limit.

This saves 8 bytes from each function.

Flutter Gallery:
Instructions(CodeSize): 6491472 ->  6375472 (-1.79%)
Total(CodeSize):       10375882 -> 10258802 (-1.13%)

Bug: http://dartbug.com/26472
Change-Id: Ief1ddd25eecd32a8314c71fdb470dd73046e5dc0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122408
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
 2019-10-24 02:40:43 +00:00
Ryan Macnak f4f0831c69 [vm] Fix TSAN failures related to object headers and GC task phases. 
Change-Id: I15078e845712e8e712e2cb0a044fc7550127ea36
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/120629
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
 2019-10-09 21:48:20 +00:00
Matthew Dempsky 6d5f763952 [vm] Eliminate Mutex/Monitor indirection where possible 
In many cases, the Mutexes and Monitors have to be marked "mutable"
because they're used to synchronize const accessor methods.

Small text segment improvement for Product builds:

$ size dart.{arm,x64}.{before,after}
   text	   data	    bss	    dec	    hex	filename
19726069	 409960	 392332	20528361	1393ce9	dart.arm.before
19725525	 409960	 392332	20527817	1393ac9	dart.arm.after
22576021	 600376	1782824	24959221	17cd8f5	dart.x64.before
22574821	 600376	1782824	24958021	17cd445	dart.x64.after

Change-Id: I68f5cd5ad452044df8bfebd160910496036a3e6b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/101745
Commit-Queue: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
 2019-05-13 21:17:51 +00:00
Liam Appelbe 924a934fe1 Shrink the stack headroom if the stack is very small 
Bug: https://github.com/dart-lang/sdk/issues/36100
Change-Id: I9d887e74c7f888dbeebaf02556522d375e30b97f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/95703
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
 2019-03-07 17:32:59 +00:00
Liam Appelbe df59b09756 Fail early if a thread has no stack headroom 
Bug: https://github.com/dart-lang/sdk/issues/35745
Change-Id: I6a9dff8608385d4dde74a16b6d4dea42fe91460f
Reviewed-on: https://dart-review.googlesource.com/c/95041
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
 2019-03-01 22:34:21 +00:00
Ryan Macnak 06a1e6e9e3 [vm] Enable timeline on Fuchsia even in product mode. 
On Fuchsia, the timeline is accessed without involving the service isolate or vm-service.

Change-Id: Ia0d4e1ca252604e8fcef466a31e3d2a8b0912251
Reviewed-on: https://dart-review.googlesource.com/c/90100
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2019-01-18 00:06:10 +00:00
Ryan Macnak 07f95e7761 Revert "[vm] Enable timeline on Fuchsia even in product mode." 
This reverts commit 3f7b371f2c.

Reason for revert: Some modes failing to find new constant?

Original change's description:
> [vm] Enable timeline on Fuchsia even in product mode.
> 
> On Fuchsia, the timeline is accessed without involving the service isolate or vm-service.
> 
> Change-Id: I0d2351dcadcfc47835732235e1b8fafa8212f883
> Reviewed-on: https://dart-review.googlesource.com/c/89880
> Reviewed-by: Zach Anderson <zra@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>

TBR=rmacnak@google.com,alexmarkov@google.com,zra@google.com,asiva@google.com

Change-Id: Ic03a78d14821e0361d54587f1f7510bc9ebfef1c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/89942
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2019-01-17 00:39:39 +00:00
Ryan Macnak 3f7b371f2c [vm] Enable timeline on Fuchsia even in product mode. 
On Fuchsia, the timeline is accessed without involving the service isolate or vm-service.

Change-Id: I0d2351dcadcfc47835732235e1b8fafa8212f883
Reviewed-on: https://dart-review.googlesource.com/c/89880
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2019-01-16 22:55:51 +00:00
Vyacheslav Egorov a9ce969e53 [vm] Decouple growable_array.h and zone.h from thread.h 
- Introduce a slimmed down version of thread.h, which just depends on the
Zone and StackResource.
- Introduce a layering check that would prevent the coupling in the future.

This is the first step towards decoupling compiler from runtime.

There are multiple reasons to introduce the decoupling but the main
reason currently is to introduce a controlled surface through which
compiler reaches into runtime to catch any places where runtime word size
might influence the compiler and then enable building compiler that
targets 32-bit runtime but is embedded into a 64-bit runtime.

Issue https://github.com/dart-lang/sdk/issues/31709

Change-Id: Id63ebbaddca55dd097298e51c90d957a73fa476e
Reviewed-on: https://dart-review.googlesource.com/c/87182
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
 2019-01-11 20:47:10 +00:00
Ben Konyi 07852532e3 [ VM ] Additional cleanup in Dart_Initialize and Dart_Cleanup 
Change-Id: I6dc02b3d9de16cc176eb97613bc0c7f0bb9b16eb
Reviewed-on: https://dart-review.googlesource.com/77013
Commit-Queue: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Auto-Submit: Ben Konyi <bkonyi@google.com>
 2018-09-28 23:18:59 +00:00
Ben Konyi 3c4c62d79a Reland "[VM] Dart_Initialize no longer crashes after Dart_Cleanup" 
This is a reland of 519ee905f9

Original change's description:
> [VM] Dart_Initialize no longer crashes after Dart_Cleanup
> 
> Change-Id: I3cfdab9553aad045f024b6f9aec0b40b08234007
> Reviewed-on: https://dart-review.googlesource.com/75786
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Ben Konyi <bkonyi@google.com>

Change-Id: Icdd901bf1ab0b675cc5f1497061a2b7b8a05d956
Reviewed-on: https://dart-review.googlesource.com/76561
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
 2018-09-26 17:54:45 +00:00
Ben Konyi b6284b41e3 Revert "[VM] Dart_Initialize no longer crashes after Dart_Cleanup" 
This reverts commit 519ee905f9.

Reason for revert: Seeing multiple crashes on Windows

Original change's description:
> [VM] Dart_Initialize no longer crashes after Dart_Cleanup
> 
> Change-Id: I3cfdab9553aad045f024b6f9aec0b40b08234007
> Reviewed-on: https://dart-review.googlesource.com/75786
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Ben Konyi <bkonyi@google.com>

TBR=bkonyi@google.com,rmacnak@google.com,zra@google.com

Change-Id: I33ad79dbc3fcf44f93612ff63bd2d8431f6067c8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/76342
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
 2018-09-25 02:17:37 +00:00
Ben Konyi 519ee905f9 [VM] Dart_Initialize no longer crashes after Dart_Cleanup 
Change-Id: I3cfdab9553aad045f024b6f9aec0b40b08234007
Reviewed-on: https://dart-review.googlesource.com/75786
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
 2018-09-25 01:20:24 +00:00
Ryan Macnak c2628192a2 [vm] Use C++11 thread_local instead of platform TLS for Thread::Current(). 
Allows the C compiler more freedom to optimize.

Change-Id: I274f5b6c4f7bfb152ba9d3432c9ae7ecc550c6d9
Reviewed-on: https://dart-review.googlesource.com/63270
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2018-07-11 23:52:43 +00:00
Ryan Macnak 265ab831b6 [vm] Partial fixes for LTO. 
Change-Id: Ic867777a7fc5df6631ce11030195d1323d7111ed
Reviewed-on: https://dart-review.googlesource.com/52983
Reviewed-by: Zach Anderson <zra@google.com>
 2018-04-30 19:23:58 +00:00
Ryan Macnak d9c3190e44 [vm] Remove some bin -> vm includes. 
Change-Id: Id304de9618a299a201b946a901a54352772f56fb
Reviewed-on: https://dart-review.googlesource.com/48704
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2018-03-28 23:16:09 +00:00
Ryan Macnak bd06ffc2c6 [vm] Check for mis-matched thread type in OSThread TLS destructor. 
Change-Id: I1d878d4d31877749cf47ddd3ef973386592fd714
Reviewed-on: https://dart-review.googlesource.com/42104
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
 2018-02-16 23:20:37 +00:00
Ryan Macnak d01d0ea8e6 [vm] Check for stack headroom before starting a hot reload. 
Split up the StackOverflow runtime entry.

Bug: https://github.com/dart-lang/sdk/issues/31578
Change-Id: Ibe26101db1651d6e776c3da5fde6b44fd27cd00e
Reviewed-on: https://dart-review.googlesource.com/27414
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2017-12-08 18:07:31 +00:00
Ryan Macnak b85a7fecd0 Reapply "[vm] Prefer stack bounds from the system thread library for overflow checks." 
Mark some profiler tests on Windows as failing.

Bug: https://github.com/dart-lang/sdk/issues/31137
Change-Id: I46a5d4838443e5cfdac6043ea8dcfeb3d05d4823
Reviewed-on: https://dart-review.googlesource.com/14920
Reviewed-by: Zach Anderson <zra@google.com>
 2017-10-18 21:15:49 +00:00
Dmitry Stefantsov a227b168da Revert "Reapply "[vm] Prefer stack bounds from the system thread library for overflow checks."" 
This reverts commit 5a022b9db6.

The reverted CL caused some redness on some vm and vm-precomp bots.

TBR=rmacnak@google.com
Change-Id: I9be670f3c3e341ec6d95082f288bc569834e38c7
Reviewed-on: https://dart-review.googlesource.com/13460
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Karl Klose <karlklose@google.com>
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
 2017-10-12 07:32:30 +00:00
Ryan Macnak 5a022b9db6 Reapply "[vm] Prefer stack bounds from the system thread library for overflow checks." 
Fix accounting of guard pages to move the stack limit up instead of down.

Change-Id: I2f6577a12cf95707c186884f0bd3def03eac12ed
Reviewed-on: https://dart-review.googlesource.com/13381
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
 2017-10-12 02:17:11 +00:00
Ryan Macnak 6ecf6dd0a3 Revert "[vm] Prefer stack bounds from the system thread library for overflow checks." 
This reverts commit af251ddfec.

Reason for revert: Crashes on Windows.

Original change's description:
> [vm] Prefer stack bounds from the system thread library for overflow checks.
> 
> Before this change, we would assume all stacks have the size the VM specifies for threads it creates, but this won't be accurate for the initial thread or threads created by the embedder.
> 
> Change-Id: I6605a88d6666a6f9d47fbe047d3fdd02aa22c80a
> Reviewed-on: https://dart-review.googlesource.com/10209
> Reviewed-by: Zach Anderson <zra@google.com>

TBR=rmacnak@google.com,zra@google.com

Change-Id: I96eaccdc8edf6e3d319827a63d168534bad0518e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/13106
Reviewed-by: Ryan Macnak <rmacnak@google.com>
 2017-10-11 21:17:28 +00:00
Ryan Macnak af251ddfec [vm] Prefer stack bounds from the system thread library for overflow checks. 
Before this change, we would assume all stacks have the size the VM specifies for threads it creates, but this won't be accurate for the initial thread or threads created by the embedder.

Change-Id: I6605a88d6666a6f9d47fbe047d3fdd02aa22c80a
Reviewed-on: https://dart-review.googlesource.com/10209
Reviewed-by: Zach Anderson <zra@google.com>
 2017-10-11 19:35:44 +00:00
Zachary Anderson 6cd8a79078 VM: Re-format to use at most one newline between functions 
R=asiva@google.com

Review-Url: https://codereview.chromium.org/2974233002 .
 2017-07-13 08:08:37 -07:00
Zachary Anderson a1bcf051d8 clang-format runtime/vm 
R=johnmccutchan@google.com

Review URL: https://codereview.chromium.org/2481873005 .
 2016-11-08 13:54:47 -08:00
Florian Schneider 8cd73fd94c Revert "Add new atomic operations and use them in two places." 
This reverts commit 27863288db.

Cross ARM and Windows build failing.

TBR=rmacnak@google.com,

Review URL: https://codereview.chromium.org/2178693002 .
 2016-07-22 15:54:24 -07:00
Florian Schneider 27863288db Add new atomic operations and use them in two places. 
1. Setting the IC data array.  This may have caused corrupt IC data seen by the
 background compiler when cloning IC data.

2. Reading the thread_interrupt_disabled_ flag. This was reported as a race with TSAN.

BUG=
R=rmacnak@google.com

Review URL: https://codereview.chromium.org/2176803003 .
 2016-07-22 15:40:54 -07:00
Zachary Anderson a503570e3a Fuchsia: Initial check-in. 
Instructions to build and run are in README.fuchsia.

R=asiva@google.com

Review URL: https://codereview.chromium.org/2117593002 .
 2016-07-01 12:42:05 -07:00
Zach Anderson 5f59a954f8 Uses an open thread handle as the ThreadJoinId on Windows. 
Also:
- Reaps exited threads in the thread pool before putting
a thread on the idle list so that a new arriving task
isn't blocked on a supposedly idle thread in the middle
of a join.
- Stops trying to join eventhandler threads on
Windows. Now that we're using the correct exit() call,
we probably don't have to worry about exit code pollution,
so joining the threads is unnecessary.

related #26400

R=asiva@google.com, iposva@google.com

Review URL: https://codereview.chromium.org/1978153002 .
 2016-05-17 13:18:13 -07:00
John McCutchan 6302c1cc41 Add API to set thread name 
BUG=
R=chinmaygarde@google.com, rmacnak@google.com

Review URL: https://codereview.chromium.org/1851953002 .
 2016-04-04 07:12:57 -07:00
John McCutchan c65114b6b4 Timeline API fixes for Flutter 
API changes:

- Remove isolate specific Timeline APIs.
- Remove Dart_EmbedderTimelineGetTimeline callback.
- Add Dart_TimelineEvent so that arbitrary trace events can be added.

Internal changes:

- Remove isolate specific streams which were never used or controllable from outside the VM.

R=rmacnak@google.com

Review URL: https://codereview.chromium.org/1811613002 .
 2016-03-16 12:18:46 -07:00
John McCutchan e2e7af1229 Remove more feature in product mode 
- Remove Timeline.
- Remove more vmservice code.
- Remove AST printing.
- Remove IL printing.
- Remove profiler.
- Remove thread interrupter.
- Remove disassembler.
- Remove Library::CheckFunctionFingerprints.

- Update test status files for product mode.

Size of dart_bootstrap before: 5287631
Size of dart_bootstrap after: 5112783

Reduction in size: 174848 bytes.

Total reduction in size (382734 + 174848): 557582 bytes.

R=rmacnak@google.com

Review URL: https://codereview.chromium.org/1678203002 .
 2016-02-09 08:45:32 -08:00
Zachary Anderson 18929970a0 Fixes for OSThread creation shutdown race. 
Also, backs out bad change to the thread pool. The real fix is to
move the disable of OSThread creation until after the thread pool
shuts down.

R=asiva@google.com

Review URL: https://codereview.chromium.org/1557033002 .
 2016-01-04 15:22:02 -08:00
Zachary Anderson a6818de006 Thread fixes for shutdown. 
- Don't disable thread creation until isolates have shutdown.
- A thread-pool thread may try to start up after thread creation has
  been disabled. We must reap the Worker objects for these threads.
- A thread may try to start up after OSThread::thread_list_lock_ has
  been destroyed. Detect this.

R=asiva@google.com

Review URL: https://codereview.chromium.org/1555643002 .
 2015-12-30 15:01:33 -08:00
Siva Annamalai b40775549f Fix for issue 25236 
- Ensure that no new OSThreads are created once the VM is in shutdown mode
- Do not query thread_list_head_ without a lock (this leads to the race which causes two threads to delete the lock and TLS at the same time)

BUG=25236
R=zra@google.com

Review URL: https://codereview.chromium.org/1537543002 .
 2015-12-18 10:16:28 -08:00
Florian Schneider 59fd6c8397 VM: Small clean up and const-ness fix for Thread/OSThread constants. 
BUG=
R=srdjan@google.com

Review URL: https://codereview.chromium.org/1482243006 .
 2015-12-02 12:30:12 +01:00
Zachary Anderson 618d4ee9b7 Thread and Timeline fixes for Mojo. 
Creates an OSThread in OSThread::Current() if a thread doesn't
already have one.

Also removes the setup of an unneeded StackZone from a Timeline API
function.

BUG=

Review URL: https://codereview.chromium.org/1483113002 .
 2015-12-01 10:52:19 -08:00
Siva Annamalai 569b3f77ee Copy the passed in name string into the os_thread structure and delete it in the destructor. 
R=iposva@google.com

Review URL: https://codereview.chromium.org/1475863002 .
 2015-11-25 09:23:08 -08:00
Siva Annamalai 9e19d236ca - Add an OSThread structure which is the generic TLS structure for all C++ 
fields in a thread (i.e fields that are not Dart VM related)
- Split the Thread structure to be a pure Dart per thread structure and add
  a pointer to os_thread which points to the OSThread structure
- Change Schedule/UnSchedule to set the Dart Thread structure as the TLS of
  the thread when it is inside the Dart world and reset the TLS back to the
  OSThread strcuture when is exits the Dart World.
- Moved the stack_base and few stack size related functions to OSThread from Isolate

R=johnmccutchan@google.com, zra@google.com

Review URL: https://codereview.chromium.org/1439483003 .
 2015-11-19 13:45:10 -08:00