Because DBC still uses code patching to implement breakpoints, running a program from DBC AppJIT may trigger a crash attempting to set a breakpoint.
Change-Id: I5d761aacec6629be946d7d2510ec3f1e3f03f4a4
Reviewed-on: https://dart-review.googlesource.com/42584
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
The assertions which tried to assert that we only use
StackFrameIterator to walk frames of the current thread was incorrect.
We already have cases where other threads will walk the stack of the
mutator thread, see below for an example where this can happen.
Thread::VisitObjectPointers was incorrectly passing Thread::Current() to
the StackFrameIterator instead of 'this'. (Code in thread_registry.cc will
loop over a number of threads and calls VisitObjectPointers on them)
Mutator thread:
0 pthread_cond_wait@@GLIBC_2.3.2
1 dart::Monitor::WaitMicros
2 dart::Monitor::Wait
3 dart::MonitorLocker::Wait
4 dart::ThreadBarrier::Sync
5 dart::GCMarker::MarkObjects
6 dart::PageSpace::MarkSweep
7 dart::Heap::CollectOldSpaceGarbage
8 dart::Heap::CollectNewSpaceGarbage
9 dart::Heap::CollectGarbage
10 dart::DN_HelperObject_<native>
11 dart::BootstrapNatives::<native>
<dart frames>
MarkTask thread:
1 dart::EntryFrame::VisitObjectPointers
2 dart::Thread::VisitObjectPointers <---- Walks mutator thread stack
3 dart::ThreadRegistry::VisitObjectPointers <---- Iterates over a number of threads
4 dart::Isolate::VisitStackPointers
5 dart::Isolate::VisitObjectPointers
6 dart::GCMarker::IterateRoots
7 dart::MarkTask::Run
8 dart::ThreadPool::Worker::Loop
9 dart::ThreadPool::Worker::Main
10 dart::ThreadStart
R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/2845053003 .
Wait for concurrent sweep tasks before verifying points, as building the allocation set expects unmarked objects.
Make assertion okay with a missing stack map at entry, which transiently exists for OSR, as the frame looks the same as unoptimized code here.
Fixes#13608Fixes#23683
Reproduces issue #26927R=fschneider@google.com
Review URL: https://codereview.chromium.org/2411453003 .
- use attribute 'no msan' on NativeEntry::ReturnValueIsError function
as msan doesn't seem to track the return slot being set by a native
function
- vsnprintf seems to have issues with msan so unpoison the allocated
memory buffer everytime vsnprintf is used to suppress the error.
BUG=
R=fschneider@google.com
Review URL: https://codereview.chromium.org/2383293003 .
The error propagation is delayed until the native function returns.
This should simplify error handling in embedder code and avoid failing
to propagate an error, which is a common failure.
BUG=
R=asiva@google.com
Review URL: https://codereview.chromium.org/1663613002 .
- uses thread execution status transition to track when a thread is in a safepoint or needs to block for a safepoint
- introduces a monitor per Thread object
- uses a per thread safepoint handshake between the thread requesting a safepoint and the requested thread.
The ThreadRegistry class now contains only the thread list for an isolate and the functionality of scheduling a thread onto an Isolate and unscheduling it from teh isolate. We could fold this functionality into the Isolate class in a different CL.
R=rmacnak@google.com, zra@google.com
Review URL: https://codereview.chromium.org/1541073002 .
Instead of calling code object directly, call indirectly and
pass the code object in a register. The object pool is then loaded from
the code object. This is another preparation step for making generated code
relocatable.
All non-ia32 platforms:
No entry patching.
ARM:
PC marker (now code object) moves to the same place as on x64 (below saved PP, above saved FP).
R9 is now used as PP, R10 as CODE_REG.
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org//1192103004 .
The first invocation of a native functions goes into LinkNativeCall which
determines the final entry point and patches the object pool entry.
When running precompiled code, this makes deserializing the object
pool entries for native functions easy, they all initially point to
a single entry (LinkNativeCall).
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org//1294113004 .
The most substantial change is in Parser and ParsedFunction, which now cache their calling thread. (A similar change was tried unsuccessfully in the past, but can now be safely implemented thanks to the ThreadRegistry state saving.)
Only remaining users are the Object::Handle(Isolate*, [...]) methods. Then, this deprecated interface will be removed.
BUG=
R=asiva@google.com
Review URL: https://codereview.chromium.org//1242343002 .
- Split runtime and native entry tags.
- Set runtime / native entry address as vm tag in stubs.
- Add reverse native entry resolver (pc to name) to public API (breaking change).
- Hookup reverse resolver for standalone VM (io + bootstrap + builtin natives).
- Runtime entries are registered with tags.
- Profiler queries for tag names via the reverse native entry resolver.
- Profiler outputs named entry tags as children under parent tag (runtime or native).
R=asiva@google.com
Review URL: https://codereview.chromium.org//227433004
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34941 260f80e4-7a28-3924-810f-c04153c831b5
Ryan Macnak