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Bug: 260881207
Test: presubmit
Test: abtd app_compat_drm
Test: abtd app_compat_top_100
Test: abtd app_compat_banking
Change-Id: I7cdd5c1b67996e2cf365ae1f959c704d3486ba97
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Additionally also uses userfaultfd's minor-fault feature for moving
space.
Bug: 160737021
Test: ART_USE_READ_BARRIER=false art/test/testrunner/testrunner.py and module install
Change-Id: I98b0c69fba4aec1263b1f38cc9f31494fd5c8cf5
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Test: TH
Change-Id: I6b54cfbaa49d320c3c9e97ebaeeb97e285f9bf43
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For ANRs, some threads may not pass through the barrier. Prevent
a crash for this case.
This behavior is consistent with checks in the dump code.
Bug: 128490284
Test: test-art-host
Change-Id: I5dc681d00c29d20755020c35a18fb9912cc08d57
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Ensure that barrier.h does not pull in mutex.h
Bug: 119869270
Test: m test-art-host
Change-Id: I54ea467c92562ec912ea5b1705049eb23cda380e
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We used ScopedGCCriticalSections in many parts of the openjdkjvmti
often unnecessarily.
We removed a totally unneeded GCCriticalSection that was acquired when
modifying the instrumentation listeners.
We also removed RequestGCSafeSynchronousCheckpoint and the change to
use GcRoots instead. We added RequestGCSafeSynchronousCheckpoint as a
way to prevent the GC from running when we are doing some JVMTI
operations on other threads. This could interact with running GCs in
non-trivial ways, potentially causing deadlocks in some situations.
This changes the code to instead use read-barriers and GcRoots to
ensure that we do not read data from the wrong gc space.
In order for this to work correctly we need to make sure that we are
only ever reading the GcRoots from the thread that eventually needs
the reference. This required some re-writing of the checkpoint
closures since they would often just call AddLocalReference on
non-local Thread objects.
Changes to Thread::RequestSynchronousCheckpoint and art::Barrier were
needed in order to allow this all to work since we needed to ensure
that the requesting thread did not suspend as the checkpoint was being
run.
This is a partial revert of commit 7585b91bfc77b8.
Bug: 67838964
Bug: 76003243
Test: use gapid
Test: ./test.py --host -j50
Test: ./art/tools/run-libjdwp-tests.sh --mode=host
Change-Id: I26d871089829639eccb973cecc315194f7bcf681
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Cut dependencies on base/logging.h by moving gAborting to its
own header. Leave the static storage in logging.cc.
Test: m
Change-Id: Ib2ca880e15f9cb50cb9aab803784826bb46efb5e
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Replace wherever possible. ART's base/logging is now mainly VLOG
and initialization code that is unnecessary to pull in and makes
changes to verbose logging more painful than they have to be.
Test: m test-art-host
Change-Id: I3e3a4672ba5b621e57590a526c7d1c8b749e4f6e
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Bug: 33006388
Bug: 12687968
Test: test-art-host with CC.
Change-Id: Id9d67bc603c6ff7bc8e346e181e3e09ffbda43b3
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Try to avoid recursive abort in barrier. May lead to a segfault
instead of a nested abort in bad cases.
Change-Id: I0e7976b77c243956dbcf81142bd5df81d5927ce0
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Avoid undefined behavior for arm64 stemming from 1u << 32 in
loops with upper bound kNumberOfXRegisters.
Create iterators for enumerating bits in an integer either
from high to low or from low to high and use them for
<arch>Context::FillCalleeSaves() on all architectures.
Refactor runtime/utils.{h,cc} by moving all bit-fiddling
functions to runtime/base/bit_utils.{h,cc} (together with
the new bit iterators) and all time-related functions to
runtime/base/time_utils.{h,cc}. Improve test coverage and
fix some corner cases for the bit-fiddling functions.
Bug: 13925192
Change-Id: I704884dab15b41ecf7a1c47d397ab1c3fc7ee0f7
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Calls to static methods have implicit class initialization
(clinit) checks of the method's declaring class in
Optimizing. However, when such a static call is inlined,
the implicit clinit check vanishes, possibly leading to an
incorrect behavior.
To ensure that inlining static methods does not change the
behavior of a program, add explicit class initialization
checks (art::HClinitCheck) as well as load class
instructions (art::HLoadClass) as last input of static
calls (art::HInvokeStaticOrDirect) in Optimizing' control
flow graphs, when the declaring class is reachable and not
known to be already initialized. Then when considering the
inlining of a static method call, proceed only if the method
has no implicit clinit check requirement.
The added explicit clinit checks are already removed by the
art::PrepareForRegisterAllocation visitor. This CL also
extends this visitor to turn explicit clinit checks from
static invokes into implicit ones after the inlining step,
by removing the added art::HLoadClass nodes mentioned
hereinbefore.
Change-Id: I9ba452b8bd09ae1fdd9a3797ef556e3e7e19c651
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Fix Barrier implementation so that Wait cannot return prematurely
due to a spurious condition variable wakeup or interrupted futex call.
Document the resulting semantics of barrier.h, which are a bit surprising,
but appear to be exactly what current clients need.
Fix the test so that it actually passes with the fixed barrier.h,
and no longer tests for properties that can't be correctly satisfied.
Improve comment for InitTimeSpec, which we almost used.
Bug:18509123
Change-Id: I0b25f33bcd22322ba04e3951cd484843788c2bf5
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Change-Id: Ie1bc20debe72f2ea2bf4c1be50cd9877c823670a
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Reduce virtual method dispatch in the method verifier and make more code
inline-able.
Add a StringPiece with const char* equality operator to avoid redundant
StringPieces and strlens.
Remove back link from register line to verifier and pass as argument to reduce
size of RegisterLine.
Remove instruction length from instruction flags and compute from the
instruction, again to reduce size.
Add suspend checks to resolve and verify to allow for more easy monitor
inflation and reduce contention on Locks::thread_list_suspend_thread_lock_.
Change ThrowEarlierClassFailure to throw pre-allocated exception.
Avoid calls to Thread::Current() by passing self.
Template specialize IsValidClassName.
Make ANR reporting with SIGQUIT run using checkpoints rather than suspending
all threads. This makes the stack/lock analysis less lock error prone.
Extra Barrier assertions and condition variable time out is now returned as a
boolean both from Barrier and ConditionVariable::Wait.
2 threaded host x86-64 interpret-only numbers from 341 samples:
Before change: Avg 176.137ms 99% CI 3.468ms to 1060.770ms
After change: Avg 139.163% 99% CI 3.027ms to 838.257ms
Reduction in average compile time after change is 20.9%.
Slow-down without change is 26.5%.
Bug: 17471626 - Fix bug where RegTypeCache::JavaLangObject/String/Class/Throwable
could return unresolved type when class loading is disabled.
Bug: 17398101
Change-Id: Id59ce3cc520701c6ecf612f7152498107bc40684
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This adds a sampling profiler thread that runs every so often, gathering
profiling data and writing the results to a file in /data/data (specific to
app running). The intention is to use these files as input to the compiler
so that it can determine the best methods to compile.
Bug: 11539952
Change-Id: I0bfbb4146fb7966673c792f017ffac8107b6272d
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Change-Id: Ice937e95e23dd622c17054551d4ae4cebd0ef8a2
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The runtime, compiler, dex2oat, and oatdump now are in seperate trees
to prevent dependency creep. They can now be individually built
without rebuilding the rest of the art projects. dalvikvm and jdwpspy
were already this way. Builds in the art directory should behave as
before, building everything including tests.
Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81
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