2cebb24bfc3247d3e9be138a3350106737455918 |
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22-Apr-2015 |
Mathieu Chartier <mathieuc@google.com> |
Replace NULL with nullptr Also fixed some lines that were too long, and a few other minor details. Change-Id: I6efba5fb6e03eb5d0a300fddb2a75bf8e2f175cb
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4460a84be92b5a94ecfb5c650aef4945ab849c93 |
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09-Mar-2015 |
Hiroshi Yamauchi <yamauchi@google.com> |
Rosalloc thread local allocation path without a cas. Speedup on N4: MemAllocTest 3044 -> 2396 (~21% reduction) BinaryTrees 4101 -> 2929 (~26% reduction) Bug: 9986565 Change-Id: Ia1d1a37b9e001f903c3c056e8ec68fc8c623a78b
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31f441464c0c8f840aba37e236ad133f30308d70 |
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08-Apr-2014 |
Mathieu Chartier <mathieuc@google.com> |
Clean-up heap spaces. We now use the CMS collector instead of the semispace collector when the phone is booting. We still perform compaction during the zygote space creation. This reduces time spent in GC by ~2s during boot and doesn't affect zygote space size. Changed the space creation logic to create the temp space when a background transition occurs. Added a flag to each space which is true if you are allowed to move objects that are within this space. Removed SwapSemiSpaces call from the semi space collector, it is now the job of the caller to do this with threads suspended. This simplifies the logic in the zygote compaction / heap transition code since these do not copy from one semispace to another. Added Space::Clear to RosAllocSpace and DlMallocSpace. This greatly simplifies the code used for collector transitions. Time spent in GC creating zygote space: Before: 3.4s, After: 1.28s No change in zygote space size. Bug: 13878055 Change-Id: I700348ab7d5bf3aa537c0cd70c0fed09aa4b0623
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6fac447555dc94a935b78198479cce645c837b89 |
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26-Feb-2014 |
Ian Rogers <irogers@google.com> |
Make allocations report usable size. Work-in-progress to allow arrays to fill usable size. Bug: 13028925. Use C++11's override keyword on GCC >= 2.7 to ensure that we override GC and allocator methods. Move initial mirror::Class set up into a Functor so that all allocated objects have non-zero sizes. Use this property to assert that all objects are never larger than their usable size. Other bits of GC related clean-up, missing initialization, missing use of const, hot methods in .cc files, "unimplemented" functions that fail at runtime in header files, reducing header file includes, move valgrind's space into its own files, reduce number of array allocation routines. Change-Id: Id5760041a2d7f94dcaf17ec760f6095ec75dadaa
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4ce1f00cc74867188347e463f4a5ecb9fe55cde5 |
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18-Nov-2013 |
Hiroshi Yamauchi <yamauchi@google.com> |
Fix a per-process dumpsys meminfo crash. In the InvalidateAllocator() function, DlMallocSpace and RosAllocSpace both null out the underlying allocator pointer at the zygote fork time so that new allocations won't accidentally happen in the zygote space after a zygote fork. However, nulling out the only allocator pointer would cause crashes in non-allocation uses such as GetFootprint() in this particular crash. Fix this by creating a second pointer just for the allocation purpose that gets nulled upon a InvalidateAllocator() call while the original pointer keeps pointing to the allocator. Change-Id: Ie751d9380db39baace9e25712a3824eec9a9969a
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cf58d4adf461eb9b8e84baa8019054c88cd8acc6 |
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26-Sep-2013 |
Hiroshi Yamauchi <yamauchi@google.com> |
A custom 'runs-of-slots' memory allocator. Bug: 9986565 Change-Id: I0eb73b9458752113f519483616536d219d5f798b
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be031fff278799984166ec866c2dd202447e0f23 |
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09-Oct-2013 |
Hiroshi Yamauchi <yamauchi@google.com> |
Remove four counter increments out of the allocation path. - This change removes the four allocation counters (the number of bytes allocated, the number of objects allocated, the number of bytes allocated ever, the number of objects allocated ever) from the dlmalloc space allocation path. Now those counter values are computed on the fly based on a combination of the two new counters that are incremented by the GC side (the number of bytes freed ever and the number of objects freed ever) and mspace_inspect_all() calls. - This results in a 1-2% speedup (though with some noise) in Ritz MemAllocTest on Nexus 4. Bug: 9986565 Change-Id: Id9a8e05a745ac1e5ea7a2b5fd9319814a9d4af13
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3b4c18933c24b8a33f38573c2ebcdb9aa16efeb5 |
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13-Sep-2013 |
Hiroshi Yamauchi <yamauchi@google.com> |
Split the allocation path into 'instrumented' and 'uninstrumented' ones. The instrumented path is equivalent to the existing allocation path that checks for three instrumentation mechanisms (the debugger allocation tracking, the runtime allocation stats collection, and valgrind) for every allocation. The uinstrumented path does not perform these checks. We use the uninstrumented path by default and enable the instrumented path only when any of the three mechanisms is enabled. The uninstrumented version of Heap::AllocObject() is inlined. This change improves the Ritz MemAllocTest by ~4% on Nexus 4 and ~3% on Host/x86. Bug: 9986565 Change-Id: I3e68dfff6789d77bbdcea98457b694e1b5fcef5f
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eb5710eba75bf338da56386ca29039df9d5134cb |
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26-Jul-2013 |
Mathieu Chartier <mathieuc@google.com> |
New free list large object space. More memory efficient, uses a std::set instead of multiset. Each large object allocation has sizeof(size_t) * 2 bytes of overhead without taking into account the std::set overhead. If debug is enabled, then objects are mprotected as they are freed. Added a large object test to space test. Change-Id: I3e714e1afbed49208a4a7e60f9ef7d701a56801b
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50b2928501fe489c108472e7648ec98cdca62e10 |
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30-Jul-2013 |
Hiroshi Yamauchi <yamauchi@google.com> |
Improve the allocation speed. - Improves the Ritz MemAllocTest benchmark result by ~500 ms (or ~5%) on Nexus 4. - Move the memset() call that zeroes the allocated memory out of the lock region. - De-virtualize/Inline the allocation call chains into Heap::AllocObject(). - Turn Heap::measure_allocation_time_ into a static const variable. - Surround the VerifyObject() call with kIsDebugBuild. Bug: 9986565 Change-Id: Ib70b6d051a80ec329788b30256565561f031da2a
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