History log of /art/runtime/utils.cc
Revision Date Author Comments
9ee0f776095c0a93f388a29f2c37689892baa2df 26-Sep-2014 Mathieu Chartier <mathieuc@google.com> Optimize get/set reflection performance

Speedups mostly from reducing how often access checks are needed,
and adding more inlining, and adding templates.

Field_getInt from ~850ns -> 350ns.
Field_setInt from ~900ns -> 370ns.

Bug: 14063288
Change-Id: I2441581ff3478c6ae43b6aa49939ff3f07555ec8
(cherry picked from commit ffc788cb7b5b9f53734d7bb8af2d5e45d885546b)
ffc788cb7b5b9f53734d7bb8af2d5e45d885546b 26-Sep-2014 Mathieu Chartier <mathieuc@google.com> Optimize get/set reflection performance

Speedups mostly from reducing how often access checks are needed,
and adding more inlining, and adding templates.

Field_getInt from ~850ns -> 350ns.
Field_setInt from ~900ns -> 370ns.

Bug: 14063288
Change-Id: I2441581ff3478c6ae43b6aa49939ff3f07555ec8
33c36d4f22ab6a5e61eb47b654deaf647c34e49c 19-Sep-2014 Andreas Gampe <agampe@google.com> ART: Only allow the zygote to create the global boot image

Do not allow arbitrary processes, even when root, to write the
boot image in /data/dalvik-cache.

Bug: 17478752, 17510489, 17439961
Change-Id: Iba2b74be6d0752f4221f4ff5ee295b45a34cb2e1
cc2f2393e69a9b1425bad1a89f41aaaf8c38f9e2 30-Aug-2014 Ian Rogers <irogers@google.com> Reduce and speed-up class def searches.

Use the class linker for descriptor lookups from the compile driver so that
dex caches are populated.
Reduce the scope of functions for scanning class paths to just the class
linker where they are performed.
If we see more than a threshold number of find class def misses on a dex file
lazily compute an index, so that future lookups are constant time (part of the
collection code is taken from
https://android-review.googlesource.com/#/c/103865/3). Note that we take a lazy
approach so that we don't serialize on loading dex files, this avoids the
reason the index was removed in 8b2c0b9abc3f520495f4387ea040132ba85cae69.
Remove an implicit and unnecessary std::string creation for PrintableString.

Single threaded interpret-only dex2oat performance is improved by roughly 10%.

Bug: 16853450

Change-Id: Icf72df76b0a4328f2a24075e81f4ff267b9401f4
(cherry picked from commit 68b56858367e29461ae290fd797443a1ef6d8005)
307091dc306c34ce9e4ee6cc3b467807b3a3bd12 27-Aug-2014 Elliott Hughes <enh@google.com> Actually ask the pthread implementation for the stack guard size.

Bug: 17111575
Change-Id: I23919b1e8aeff627a65daf57f1109bec60b196cc
cb6b0f31ede2275e79e6199ec391147585a37a2a 12-Aug-2014 Ian Rogers <irogers@google.com> Avoid use of std::string where we have const char*.

Removing the ClassHelper caused std::string creation for all calls to
Class::GetDescriptor and a significant performance regression. Make the
std::string an out argument so the caller can maintain it and its life time
while allowing GetDescriptor to return the common const char* case.

Don't generate GC maps when compilation is disabled.

Remove other uses of std::string that are occuring on critical paths.
Use the cheaper SkipClass in CompileMethod in CompilerDriver.
Specialize the utf8 as utf16 comparison code for the common shorter byte
encoding.
Force a bit of inlining, remove some UNLIKELYs (they are prone to pessimizing
code), add some LIKELYs.

x86-64 host 1-thread interpret-only of 57 apks:
Before: 29.539s
After: 23.467s

Regular compile:
Before: 1m35.347s
After: 1m20.056s

Bug: 16853450
Change-Id: Ic705ea24784bee24ab80084d06174cbf87d557ad

Conflicts:
runtime/utils.cc
345c4b19758703793ed31024cfb79940e2c63b75 18-Jul-2014 Alex Light <allight@google.com> Make system use patchoat to relocate during runtime.

Change dalvik_system_DexFile.cc so that isDexOptNeededInternal will be
able to indicate that a patchoat is required. Change default of relocate
option to be on.

Bug: 15358152

(cherry picked from commit 6e183f2e973a20f2eaca135c240908e1bf98c5d0)

Change-Id: Ib21f4f41b6cbf18094e3ca1a30d65a3b197b71b0
6e183f2e973a20f2eaca135c240908e1bf98c5d0 18-Jul-2014 Alex Light <allight@google.com> Make system use patchoat to relocate during runtime.

Change dalvik_system_DexFile.cc so that isDexOptNeededInternal will be
able to indicate that a patchoat is required. Change default of relocate
option to be on.

Bug: 15358152

Change-Id: Ibe92d8b55a24bbf718b0416a21b76e5df7a2de26
a59dd80f9f48cb750d329d4d4af2d99d72b484d1 03-Jul-2014 Alex Light <allight@google.com> Runtime can now be set to require relocation

Add a pair of runtime flags -Xrelocate and -Xnorelocate that can force
the runtime to require that all files that are run are relocated, to
prevent attacks based on the known art base address.

Add support for running patchoat on oat files compiled without an image.

Change run-test to have new --prebuild and --relocate flags.

Bug: 15358152

Change-Id: I91166c62dd1ab80e5cbcb7883a2cd0d56afca32d
22d5e735f403c57525fe868304c7123f0ce66399 16-Jul-2014 Ian Rogers <irogers@google.com> Remove object_utils.h.

Break into object_lock, field_helper and method_helper.
Clean up header files following this.
Also tidy some of the Handle code in response to compiler errors when resolving
the changes in this CL.

Change-Id: I73e63015a0f02a754d0866bfaf58208aebcaa295
e63db27db913f1a88e2095a1ee8239b2bb9124e8 16-Jul-2014 Ian Rogers <irogers@google.com> Break apart header files.

Create libart-gtest for common runtime and compiler gtest routines.
Rename CompilerCallbacksImpl that is quick compiler specific.
Rename trace clock source constants to not use the overloaded profiler term.

Change-Id: I4aac4bdc7e7850c68335f81e59a390133b54e933
829b4bad12a34c90734e73d4460d571db812372c 26-Jun-2014 Andreas Gampe <agampe@google.com> ART: Change sprintf to snprintf

Use of sprintf is discouraged. Change to snprintf in utils.cc. Avoids
a warning with GCC 4.9.

Change-Id: I03cc13a0f00dff07e8b775584ece9c4e4a64e590
833a48501d560c9fa7fc78ef619888138c2d374f 22-May-2014 Andreas Gampe <agampe@google.com> ART: Native support for multidex

Native support for zip files with multiple classesX.dex.

Works by explicitly looking for those files in ascending order. As
these files have no file system representation for themselves,
introduce synthetic dex locations: the name of the originating file
plus a colon plus the name of the dex file, e.g., test.jar:classes2.dex.

Opening a zip dex file will return all dex files in this way. This
keeps the changes to dex2oat minimal.

To hide multidex/synthetic names from the Java layer, let the handle
of dalvik.system.DexFile refer to a vector of DexFile objects. When
opening a location, test possible synthetic names and add them to the
vector. Thus, the original multidex jar in the classpath will be
associated with all embedded dex files.

Change-Id: I0de107e1369cbc94416c544aca3b17525c9eac8b
f5997b4d3f889569d5a2b724d83d764bfbb8d106 20-Jun-2014 Mathieu Chartier <mathieuc@google.com> More advanced timing loggers.

The new timing loggers have lower overhead since they only push into
a vector. The new format has two types, a start timing and a stop
timing. You can thing of these as brackets associated with a
timestamp. It uses these to construct various statistics when needed,
such as: Total time, exclusive time, and nesting depth.

Changed PrettyDuration to have a default of 3 digits after the decimal
point.

Exaple of a GC dump with exclusive / total times and indenting:
I/art (23546): GC iteration timing logger [Exclusive time] [Total time]
I/art (23546): 0ms InitializePhase
I/art (23546): 0.305ms/167.746ms MarkingPhase
I/art (23546): 0ms BindBitmaps
I/art (23546): 0ms FindDefaultSpaceBitmap
I/art (23546): 0ms/1.709ms ProcessCards
I/art (23546): 0.183ms ImageModUnionClearCards
I/art (23546): 0.916ms ZygoteModUnionClearCards
I/art (23546): 0.610ms AllocSpaceClearCards
I/art (23546): 1.373ms AllocSpaceClearCards
I/art (23546): 0.305ms/6.318ms MarkRoots
I/art (23546): 2.106ms MarkRootsCheckpoint
I/art (23546): 0.153ms MarkNonThreadRoots
I/art (23546): 4.287ms MarkConcurrentRoots
I/art (23546): 43.461ms UpdateAndMarkImageModUnionTable
I/art (23546): 0ms/112.712ms RecursiveMark
I/art (23546): 112.712ms ProcessMarkStack
I/art (23546): 0.610ms/2.777ms PreCleanCards
I/art (23546): 0.305ms/0.855ms ProcessCards
I/art (23546): 0.153ms ImageModUnionClearCards
I/art (23546): 0.610ms ZygoteModUnionClearCards
I/art (23546): 0.610ms AllocSpaceClearCards
I/art (23546): 0.549ms AllocSpaceClearCards
I/art (23546): 0.549ms MarkRootsCheckpoint
I/art (23546): 0.610ms MarkNonThreadRoots
I/art (23546): 0ms MarkConcurrentRoots
I/art (23546): 0.610ms ScanGrayImageSpaceObjects
I/art (23546): 0.305ms ScanGrayZygoteSpaceObjects
I/art (23546): 0.305ms ScanGrayAllocSpaceObjects
I/art (23546): 1.129ms ScanGrayAllocSpaceObjects
I/art (23546): 0ms ProcessMarkStack
I/art (23546): 0ms/0.977ms (Paused)PausePhase
I/art (23546): 0.244ms ReMarkRoots
I/art (23546): 0.672ms (Paused)ScanGrayObjects
I/art (23546): 0ms (Paused)ProcessMarkStack
I/art (23546): 0ms/0.610ms SwapStacks
I/art (23546): 0.610ms RevokeAllThreadLocalAllocationStacks
I/art (23546): 0ms PreSweepingGcVerification
I/art (23546): 0ms/10.621ms ReclaimPhase
I/art (23546): 0.610ms/0.702ms ProcessReferences
I/art (23546): 0.214ms/0.641ms EnqueueFinalizerReferences
I/art (23546): 0.427ms ProcessMarkStack
I/art (23546): 0.488ms SweepSystemWeaks
I/art (23546): 0.824ms/9.400ms Sweep
I/art (23546): 0ms SweepMallocSpace
I/art (23546): 0.214ms SweepZygoteSpace
I/art (23546): 0.122ms SweepMallocSpace
I/art (23546): 6.226ms SweepMallocSpace
I/art (23546): 0ms SweepMallocSpace
I/art (23546): 2.144ms SweepLargeObjects
I/art (23546): 0.305ms SwapBitmaps
I/art (23546): 0ms UnBindBitmaps
I/art (23546): 0.275ms FinishPhase
I/art (23546): GC iteration timing logger: end, 178.971ms

Change-Id: Ia55b65609468f212b3cd65cda66b843da42be645
c5f17732d8144491c642776b6b48c85dfadf4b52 06-Jun-2014 Ian Rogers <irogers@google.com> Remove deprecated WITH_HOST_DALVIK.

Bug: 13751317
Fix the Mac build:
- disable x86 selector removal that causes OS/X 10.9 kernel panics,
- madvise don't need does zero memory on the Mac, factor into MemMap
routine,
- switch to the elf.h in elfutils to avoid Linux kernel dependencies,
- we can't rely on exclusive_owner_ being available from other pthread
libraries so maintain our own when futexes aren't available (we
can't rely on the OS/X 10.8 hack any more),
- fix symbol naming in assembly code,
- work around C library differences,
- disable backtrace in DumpNativeStack to avoid a broken libbacktrace
dependency,
- disable main thread signal handling logic,
- align the stack in stub_test,
- use $(HOST_SHLIB_SUFFIX) rather than .so in host make file variables.

Not all host tests are passing on the Mac with this change. dex2oat
works as does running HelloWorld.
Change-Id: I5a232aedfb2028524d49daa6397a8e60f3ee40d3
bfd9a4378eacaf2dc2bbe05ad48c5164fc93c9fe 22-May-2014 Mathieu Chartier <mathieuc@google.com> Change MethodHelper to use a Handle.

Added ConstHandle to help prevent errors where you modify the value
stored in the handle of the caller. Also fixed compaction bugs
related to not knowing MethodHelper::GetReturnType can resolve types.
This bug was present in interpreter RETURN_OBJECT.

Bug: 13077697

Change-Id: I71f964d4d810ab4debda1a09bc968af8f3c874a3
576ca0cd692c0b6ae70e776de91015b8ff000a08 07-Jun-2014 Ian Rogers <irogers@google.com> Reduce header files including header files.

Main focus is getting heap.h out of runtime.h.

Change-Id: I8d13dce8512816db2820a27b24f5866cc871a04b
61c5ebc6aee2cac1c363de6fbdac25ada1697fdb 06-Jun-2014 Mathieu Chartier <mathieuc@google.com> Change FieldHelper to use a handle.

Fixed compaction bugs related to FieldHelper::GetType in:
artSet32InstanceFromCode
SetFieldValueImpl
CheckReceiver
Field_set
interpreter::DoFieldPut
MethodVerifier::VerifyISGet
MethodVerifier::VerifyISPut
MethodVerifier::VerifyIGetQuick

Bug: 13077697

Change-Id: I7de9ded2893b5568d43e4daa86fd135bf5508b72
c1b643cc6ac45dbd0eabdcd7425c7e86006c27d6 31-May-2014 Calin Juravle <calin@google.com> Fixed and refactored profiler options handling

- extracted profiler options in a separate class
- switched from system property reading to command line arguments
- added profile based compilation options to CompilerOptions
- removed no longer used kProfile compilation filter
- optimize dex files only if the profiler is enabled
- clean up unused arguments

Bug: 12877748
Bug: 15275634
Change-Id: I37ff68e7694370950ce8db2360562e9058ecebb7
bb0b53f58f11c628f077603b56077dfed1a18f11 23-May-2014 Calin Juravle <calin@google.com> Clean up the sampling profiler

- rename variables/fields names to match the code style (use
_underscore_names_)
- extract common property parsing in utils.cc
- fail to load profile file if any line is malformed
- added ProfileFile to manage the profile data generate in the previous
runs (replaces ProfileHelper and nests ProfileData)

Bug: 12877748
Change-Id: Ie7bda30bfdeb7e78534c986615b0649eac12a97b
700a402244a1a423da4f3ba8032459f4b65fa18f 20-May-2014 Ian Rogers <irogers@google.com> Now we have a proper C++ library, use std::unique_ptr.

Also remove the Android.libcxx.mk and other bits of stlport compatibility
mechanics.

Change-Id: Icdf7188ba3c79cdf5617672c1cfd0a68ae596a61
2afe49450f2e018f18b5de45428b9174bfd6f196 19-May-2014 Brian Carlstrom <bdc@google.com> Follow up to "Add ISA directory to image and odex pathnames."

Change-Id: I7f08cc3052fbed93a56ccf1ab7675ae8bc129da9
f832284dd847ff077577bb5712225430bbbb3b67 16-May-2014 Mathieu Chartier <mathieuc@google.com> Delete ClassHelper and fix compaction bug in GetDirectInterface

Cleanup helps to prevent compaction bugs. Fixed a fairly serious
compaction error caused by calling ClassHelper::GetDirectInterface
without handling the case where it causes thread suspension due to
ResolveType.

Bug: 8981901

Change-Id: I82b3bb6dd48d21eb6ece7aae0733c4a23c2bc408
0e12bdc49744eb6d5c29b9611a8dbe10bac4cd53 15-May-2014 Brian Carlstrom <bdc@google.com> Add ISA directory to image and odex pathnames.

Bug: 14882223
Bug: 14694978
Change-Id: Ic1b5ae836b8e91ea461dcd4f3da8e38dc3bec00f
507dfdd147c97bfbadebfd63584d094b6a4e7b47 16-May-2014 Ian Rogers <irogers@google.com> Compatibility layer to transition from UniquePtr to std::unique_ptr.

Use ART_WITH_STLPORT (enabled for the target) to cause the use of UniquePtr,
for the host switch to std::unique_ptr. For now the type remains called
UniquePtr.
Make dalvik compile with clang on the host, move its build to C++11.

Change-Id: I5ba8d2757904bc089ed62047ea03de3c0853fb12
41ccffd58512f1fa1aeb9ad288cbb667899ff1be 06-May-2014 Brian Carlstrom <bdc@google.com> Automatically create non-/data dalvik-cache directories

Bug: 14471634
Change-Id: Ie8ae4537102352dc1b270e9b65e681adf3631a80
7b20533d064dcc4670e581d8a843aa3d84d0ae02 06-May-2014 Colin Cross <ccross@google.com> Revert "art: fix creating dalvik-cache subdirectory"

This reverts commit 165e8bda46a81a39862b953e85408b0d7688446d.

Change-Id: Ib4d1bd5b9bd965cacb28e9ecc485fca9443aca8b
165e8bda46a81a39862b953e85408b0d7688446d 06-May-2014 Colin Cross <ccross@android.com> art: fix creating dalvik-cache subdirectory

The current code only ever calls mkdir if dalvik_cache_root starts
with /tmp, which is not true on the device. Split the logic for
creating dalvik-cache from the logic for creating dalvik-cache
subdirectories, as they have different conditions.

Fixes:
05-05 21:34:04.870 1295 1295 F art : art/runtime/utils.cc:1187] Failed to find dalvik-cache directory /data/dalvik-cache/arm64
when /data/dalvik-cache/arm64 doesn't exist.

Change-Id: Ifdf5fcc2d3a8d80f6182cf2e5b5d7b1fac3c3810
ef204fae79009caa1ec7df1f79462bf8b92b5e58 30-Apr-2014 Narayan Kamath <narayan@google.com> Fix errno checking for dalvik-cache creation.

On the host, it's possible for /tmp/foo/dalvik-cache/<isa> to
not exist, but for /tmp/foo/dalvik-cache to be already present.
In this scenario, the first mkdir() can fail with EEXIST.

(cherry picked from commit 6fa28aef44106eef4a7195adb5eb77f6e5531572)

Change-Id: I1da79ad23a4ff510a0f87eca4b52d9f52ab791ad
11d9f06a96a6909905c248ed684366190140095c 23-Apr-2014 Narayan Kamath <narayan@google.com> Use instruction specific dalvik cache dirs.

- All oat & art files are now placed under /data/dalvik-cache/<isa>/.
- GetDalvikCacheOrDie now requires a mandatory subdirectory argument,
and is implicitly rooted under /data/.
- Added helper methods to convert InstructionSet enums into strings
and vice versa.

(cherry picked from commit 2974bc3d8a5d161d449dd66826d668d87bdc3cbe)

Change-Id: Ic7986938e6a7091a2af675ebafec768f7b5fb8cd
6fa28aef44106eef4a7195adb5eb77f6e5531572 30-Apr-2014 Narayan Kamath <narayan@google.com> Fix errno checking for dalvik-cache creation.

On the host, it's possible for /tmp/foo/dalvik-cache/<isa> to
not exist, but for /tmp/foo/dalvik-cache to be already present.
In this scenario, the first mkdir() can fail with EEXIST.

Change-Id: Ia99f35a28f5ce4e3ac6c47933b79369240683091
2974bc3d8a5d161d449dd66826d668d87bdc3cbe 23-Apr-2014 Narayan Kamath <narayan@google.com> Use instruction specific dalvik cache dirs.

- All oat & art files are now placed under /data/dalvik-cache/<isa>/.
- GetDalvikCacheOrDie now requires a mandatory subdirectory argument,
and is implicitly rooted under /data/.
- Added helper methods to convert InstructionSet enums into strings
and vice versa.

Change-Id: I9bff2e2ca534e0b93842a50d5b272ddf6d5745f3
a2cee18799d7e61adb037a4219adb23fef7d022b 17-Apr-2014 Christopher Ferris <cferris@google.com> Modify unwind to comply with stack parser tools.

Bug: 14081592

Change-Id: I6906b2575c74d64f1c3ba7602779b3a789de1c69
0f6784737882199197796b67b99e5f1ded383bee 11-Mar-2014 Ian Rogers <irogers@google.com> Unify 64bit int constant definitions.

LL and ULL prefixes are word size dependent, use the INT64_C and UINT64_C
macros instead.

Change-Id: I5b70027651898814fc0b3e9e22a18a1047e76cb9
474cc79e445d4d4fedabfc5b7acf648cf338fc26 07-Mar-2014 Brian Carlstrom <bdc@google.com> Use GetEntryPointFromQuickCompiledCode instead of GetQuickOatCodeOffset

The latter is meant for compile time use only when an offset is stored, instead of a pointer to code

Change-Id: I2fa9b8b3aaab0e6cfa1fc31c4d44aab0d9c3d30f
067d20fd2fddd947ce3a014d023e9de249082ebe 05-Mar-2014 Kenny Root <kroot@google.com> backtrace: use Java stack to help decode native

Before change:

native: usb_host_run+16 [0x400a43f9] (/libusbhost.so)
native: android::Vector<int>::do_move_forward(void*, void const*, unsigned int) const+54 [0x501b1c5b] (/libandroid_servers.so)
native: ??? [0x624de480] (/system@framework@boot.oat)
at com.android.server.usb.UsbHostManager.monitorUsbHostBus(Native method)
at com.android.server.usb.UsbHostManager.access$000(UsbHostManager.java:38)

After change:

native: usb_host_run+16 [0x400933f9] (libusbhost.so)
native: android::Vector<int>::do_move_forward(void*, void const*, unsigned int) const+54 [0x4e984c5b] (libandroid_servers.so)
native: Java_com_android_server_usb_UsbHostManager_monitorUsbHostBus__+92 [0x624de480] (system@framework@boot.oat)
at com.android.server.usb.UsbHostManager.monitorUsbHostBus(Native method)
at com.android.server.usb.UsbHostManager.access$000(UsbHostManager.java:38)

Change-Id: Iea550a251a12e9ba7df9582fd454093bfa4e90e0
cc460f11b5422d8ad93c64b9c1d79b694386c272 05-Mar-2014 Kenny Root <kroot@google.com> backtrace: trim of unneeded slash from solib

Previously we would output solib with an unnecessary slash:

native: art::JDWP::JdwpState::Run()+6018 [0x416bf3e3] (/libart.so)

Trim it off so it omits the slash:

native: art::JDWP::JdwpState::Run()+6018 [0x41961f6b] (libart.so)

Change-Id: I82baf1e624227858f5750ef57058474d21777451
13db9aa2d23e705d49c777abb45ba47e3747d873 27-Feb-2014 Brian Carlstrom <bdc@google.com> Avoid tripping up debuggered with the fatal crash abort

Bug: 13226780
Change-Id: Ia876d1dc7774713ec49fb8e6b0625f118fffb198
a1ce1fef2d49d1d537776a5308ace7102a815fe5 25-Feb-2014 Brian Carlstrom <bdc@google.com> Split up CommonTest into CommonRuntimeTest and CommonCompilerTest

Change-Id: I8dcf6b29a5aecd445f1a3ddb06386cf81dbc9c70
4cf5e57b5ec366b8730dacd45e8011e5f9b07b6d 25-Feb-2014 Brian Carlstrom <bdc@google.com> Move waitpid(2) includes to art::Exec implementation

(cherry picked from commit 446a13ff04dae7ef9c90584e7cf8e834ee841681)

Change-Id: Id5fe3dd8e6c4cef953c39b00f2a53b23da5a6247
35d8b8e0f6d174108b5e94ec2e49cf3c6a0c72c3 25-Feb-2014 Brian Carlstrom <bdc@google.com> Avoid going through char* for std::string API

Bug: 13186058

(cherry picked from commit 14ae4a873e91ae8cb1c00013579b5b058268879d)

Change-Id: Ib529cc10abc2d413e9da65c043dbc2638b734acd
97ae85853c8ac39cc71a67c820d76ebc2b2cab20 25-Feb-2014 Brian Carlstrom <bdc@google.com> Avoid going through char* for std::string API

Bug: 13186058
Change-Id: Idd58b15428e8849a93c1f57a9819fcb514f1545d
14ae4a873e91ae8cb1c00013579b5b058268879d 25-Feb-2014 Brian Carlstrom <bdc@google.com> Avoid going through char* for std::string API

Bug: 13186058
Change-Id: Idd58b15428e8849a93c1f57a9819fcb514f1545d
6449c62e40ef3a9bb75f664f922555affb532ee4 11-Feb-2014 Brian Carlstrom <bdc@google.com> Create CompilerOptions

Package up most compiler related options in CompilerOptions. Details include:
- Includes compiler filter, method thresholds, SEA IR mode.
- Excludes those needed during Runtime::Init such as CompilerCallbacks and VerificationResults.
- Pass CompilerOptions to CompilerDriver.
- Remove CompilerOptions from Runtime.
- Add ability to pass options for app and image dex2oat to runtime via
-Xcompiler-option and -Ximage-compiler-option respectively.

Other
- Replace 2x CompilerCallbacks implementations with one.
- Factor out execv code for use by both image and oat generation.
- More OatFile error_msg reporting.
- DCHECK for SuspendAll found trying to run valgrind.

Change-Id: Iecb57da907be0c856d00c3cd634b5042a229e620
ef7d42fca18c16fbaf103822ad16f23246e2905d 06-Jan-2014 Ian Rogers <irogers@google.com> Object model changes to support 64bit.

Modify mirror objects so that references between them use an ObjectReference
value type rather than an Object* so that functionality to compress larger
references can be captured in the ObjectRefererence implementation.
ObjectReferences are 32bit and all other aspects of object layout remain as
they are currently.

Expand fields in objects holding pointers so they can hold 64bit pointers. Its
expected the size of these will come down by improving where we hold compiler
meta-data.
Stub out x86_64 architecture specific runtime implementation.
Modify OutputStream so that reads and writes are of unsigned quantities.
Make the use of portable or quick code more explicit.
Templatize AtomicInteger to support more than just int32_t as a type.
Add missing, and fix issues relating to, missing annotalysis information on the
mutator lock.
Refactor and share implementations for array copy between System and uses
elsewhere in the runtime.
Fix numerous 64bit build issues.

Change-Id: I1a5694c251a42c9eff71084dfdd4b51fff716822
943af7dab1454517c5bd11a31ab99f260afb22d1 16-Jan-2014 Christopher Ferris <cferris@google.com> Change to support new BacktraceMap.

Change-Id: I291313583dca2c8e1e946504c442f5810f0fb477
16ce0923698d9a2df8a93d3895d2e851d8ac6fbf 10-Jan-2014 Ian Rogers <irogers@google.com> Make fast JNI part of pretty method output.

Change-Id: Ic4951a22d12e93d7f1e1af7ffbb08b4bb9b8f587
e6da9af8dfe0a3e3fbc2be700554f6478380e7b9 16-Dec-2013 Mathieu Chartier <mathieuc@google.com> Background compaction support.

When the process state changes to a state which does not perceives
jank, we copy from the main free-list backed allocation space to
the bump pointer space and enable the semispace allocator.

When we transition back to foreground, we copy back to a free-list
backed space.

Create a seperate non-moving space which only holds non-movable
objects. This enables us to quickly wipe the current alloc space
(DlMalloc / RosAlloc) when we transition to background.

Added multiple alloc space support to the sticky mark sweep GC.

Added a -XX:BackgroundGC option which lets you specify
which GC to use for background apps. Passing in
-XX:BackgroundGC=SS makes the heap compact the heap for apps which
do not perceive jank.

Results:
Simple background foreground test:
0. Reboot phone, unlock.
1. Open browser, click on home.
2. Open calculator, click on home.
3. Open calendar, click on home.
4. Open camera, click on home.
5. Open clock, click on home.
6. adb shell dumpsys meminfo

PSS Normal ART:
Sample 1:
88468 kB: Dalvik
3188 kB: Dalvik Other
Sample 2:
81125 kB: Dalvik
3080 kB: Dalvik Other

PSS Dalvik:
Total PSS by category:
Sample 1:
81033 kB: Dalvik
27787 kB: Dalvik Other
Sample 2:
81901 kB: Dalvik
28869 kB: Dalvik Other

PSS ART + Background Compaction:
Sample 1:
71014 kB: Dalvik
1412 kB: Dalvik Other
Sample 2:
73859 kB: Dalvik
1400 kB: Dalvik Other

Dalvik other reduction can be explained by less deep allocation
stacks / less live bitmaps / less dirty cards.

TODO improvements: Recycle mem-maps which are unused in the current
state. Not hardcode 64 MB capacity of non movable space (avoid
returning linear alloc nightmares). Figure out ways to deal with low
virtual address memory problems.

Bug: 8981901

Change-Id: Ib235d03f45548ffc08a06b8ae57bf5bada49d6f3
6e9aeb6633e42bc7d2265f73de28e521e3fc9c21 06-Nov-2013 Christopher Ferris <cferris@google.com> Update Backtrace::Create to use new define.

Change-Id: Ib345ef796c99d12fb3a4118f28edec7cbffa76d2
7020278bce98a0735dc6abcbd33bdf1ed2634f1d 23-Oct-2013 Dave Allison <dallison@google.com> Support hardware divide instruction

Bug: 11299025

Uses sdiv for division and a combo of sdiv, mul and sub for modulus.
Only does this on processors that are capable of the sdiv instruction, as determined
by the build system.

Also provides a command line arg --instruction-set-features= to allow cross compilation.
Makefile adds the --instruction-set-features= arg to build-time dex2oat runs and defaults
it to something obtained from the target architecture.

Provides a GetInstructionSetFeatures() function on CompilerDriver that can be
queried for various features. The only feature supported right now is hasDivideInstruction().

Also adds a few more instructions to the ARM disassembler

b/11535253 is an addition to this CL to be done later.

Change-Id: Ia8aaf801fd94bc71e476902749cf20f74eba9f68
7b5f0cf08f74ff36760a813888779d28a175982d 01-Nov-2013 Christopher Ferris <cferris@google.com> Use libbacktrace instead of libcorkscrew.

Also, removed the ignore frames of 2, this was causing threads to chop
the lower two frames. The original code assumed that the calls to decode
the frame were in the unwind trace, but that's not the case.

Change-Id: Ifc0da0227f9114a5b462ef88e038439d58f951e9
8d31bbd3d6536de12bc20e3d29cfe03fe848f9da 13-Oct-2013 Ian Rogers <irogers@google.com> Throw IOException at source of failing to open a dex file.

Before is:
java.lang.ClassNotFoundException: Didn't find class "GCBench" on path: DexPathList[[zip file "/disk2/dalvik-dev/out/host/linux-x86/framework/GCBench.jar"],nativeLibraryDirectories=[/disk2/dalvik-dev/out/host/linux-x86/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
Suppressed: java.lang.ClassNotFoundException: GCBench
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 1 more
Caused by: java.lang.NoClassDefFoundError: Class "LGCBench;" not found
... 5 more
And after is:
java.lang.ClassNotFoundException: Didn't find class "GCBench" on path: DexPathList[[zip file "/disk2/dalvik-dev/out/host/linux-x86/framework/GCBench.jar"],nativeLibraryDirectories=[/disk2/dalvik-dev/out/host/linux-x86/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
Suppressed: java.io.IOException: Zip archive '/disk2/dalvik-dev/out/host/linux-x86/framework/GCBench.jar' doesn't contain classes.dex
at dalvik.system.DexFile.openDexFile(Native Method)
at dalvik.system.DexFile.<init>(DexFile.java:80)
at dalvik.system.DexFile.<init>(DexFile.java:59)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:268)
at dalvik.system.DexPathList.makeDexElements(DexPathList.java:235)
at dalvik.system.DexPathList.<init>(DexPathList.java:113)
at dalvik.system.BaseDexClassLoader.<init>(BaseDexClassLoader.java:48)
at dalvik.system.PathClassLoader.<init>(PathClassLoader.java:38)
at java.lang.ClassLoader.createSystemClassLoader(ClassLoader.java:128)
at java.lang.ClassLoader.access$000(ClassLoader.java:65)
at java.lang.ClassLoader$SystemClassLoader.<clinit>(ClassLoader.java:81)
at java.lang.ClassLoader.getSystemClassLoader(ClassLoader.java:137)
Suppressed: java.lang.ClassNotFoundException: GCBench
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 1 more
Caused by: java.lang.NoClassDefFoundError: Class "LGCBench;" not found
... 5 more

Also, move dex file verifier messages out of logs.
In the process the ClassLinker::dex_lock_ needed tidying to cover a smaller
scope. Bug 11301553.

Change-Id: I80058652e11e7ea63457cc01a0cb48afe1c15543
19a083603128c2cded84f0e5ad59db2044b1d6b6 16-Oct-2013 Brian Carlstrom <bdc@google.com> Fix dumpsys meminfo for art

Bug: 10112253

(cherry picked from commit fb2f70c7678d33c2027cdd0285d8b5421876e6aa)

Change-Id: I149c30242f3c9ef1f67b95e26731c2505e840171
fb2f70c7678d33c2027cdd0285d8b5421876e6aa 16-Oct-2013 Brian Carlstrom <bdc@google.com> Fix dumpsys meminfo for art

Bug: 10112253
Change-Id: I56fd1318d3f7118a4e602afee8494af9730a8b5b
7c3d13aebdd8611cae58a1048bffb13cbdc465cb 05-Sep-2013 Brian Carlstrom <bdc@google.com> Use file magic to determine file type, not file extension.

Bug: 10614658
Change-Id: I9156dfca78ac8cd1c62fb258825cc791629270a4
d91d6d6a80748f277fd938a412211e5af28913b1 26-Sep-2013 Ian Rogers <irogers@google.com> Introduce Signature type to avoid string comparisons.

Method resolution currently creates strings to then compare with strings formed
from methods in other dex files. The temporary strings are purely created for
the sake of comparisons. This change creates a new Signature type that
represents a method signature but not as a string. This type supports
comparisons and so can be used when searching for methods in resolution.

With this change malloc is no longer the hottest method during dex2oat (now its
memset) and allocations during verification have been reduced. The verifier is
commonly what is populating the dex cache for methods and fields not declared
in the dex file itself.

Change-Id: I5ef0542823fbcae868aaa4a2457e8da7df0e9dae
2921201dce37ba40c55b89c0deca3c34bf64168e 13-Sep-2013 Brian Carlstrom <bdc@google.com> Remove some non-const references in utils

Change-Id: Ib2d3c39fadb6a750c68c37b0aa53daab155a65a3
a67249065e4c9b3cf4a7c081d95a78df28291ee9 23-Sep-2013 Ian Rogers <irogers@google.com> Move hot utf routines into -inl.h.

Change-Id: I7050d8282a7e5870b2bf671d6867c57625e00ccc
caacdf326cfe09decfca0a15c62ebe10b774e05e 20-Sep-2013 Anwar Ghuloum <anwarg@google.com> Fix dumpsys meminfo for art

BUG:10112253
Change-Id: I2a34cc0841bdcf922c4ab4eadda360313858a0d6
57dac6ed61a0a25c14d4e2fabc84435578d42360 16-Aug-2013 Jeff Hao <jeffhao@google.com> Fix sampling profiler to use thread's cpu clock.

The sampling profiler was using the sampling thread's cpu clock to
measure cpu time, instead of the sampled thread's cpu clock.

Change-Id: Ief1f82e07e0353192c61521f67dec7a761905f64
414af10d719603fb4d8d972f5a022c17957b44e1 13-Aug-2013 Brian Carlstrom <bdc@google.com> Add flock(2)ing on dex-cache files to prevent races

Bug: 9071417
Change-Id: I1ee9ff281867f90fba7a8ed8bbf06b33ac29d511
7571e8b761ebc2c923525e12ea9fcf07e62cb33e 13-Aug-2013 Brian Carlstrom <bdc@google.com> Add flock(2)ing on dex-cache files to prevent races

Bug: 9071417
Change-Id: I1ee9ff281867f90fba7a8ed8bbf06b33ac29d511
ea46f950e7a51585db293cd7f047de190a482414 30-Jul-2013 Brian Carlstrom <bdc@google.com> Refactor java.lang.reflect implementation

Cherry-picked from commit ed41d5c44299ec5d44b8514f6e17f802f48094d1.

Move to ArtMethod/Field instead of AbstractMethod/Field and have
java.lang.reflect APIs delegate to ArtMethod/ArtField.

Bug: 10014286.

Change-Id: Iafc1d8c5b62562c9af8fb9fd8c5e1d61270536e7
7934ac288acfb2552bb0b06ec1f61e5820d924a4 26-Jul-2013 Brian Carlstrom <bdc@google.com> Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
7940e44f4517de5e2634a7e07d58d0fb26160513 12-Jul-2013 Brian Carlstrom <bdc@google.com> Create separate Android.mk for main build targets

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