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A lot of these benchmarks predate DoNotOptimize and rolled their own
hacks.
Bug: http://b/148307629
Test: ran benchmarks before & after and got similar results
Change-Id: If44699d261b687f6253af709edda58f4c90fb285
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Add a calloc benchmark to make sure that a native allocator isn't
doing anything incorrectly when zero'ing memory.
Also add a fork call benchmark to verify that the time to make a
fork call isn't increasing.
Test: Ran benchmarks on walleye and verified that the numbers are not
Test: too variable between runs.
Change-Id: I61d289d277f85ac432a315e539cf6391ea036866
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Update the native allocator documentation to include running of this
benchmark.
Move the malloc_benchmark.cpp to malloc_sql_benchmark.cpp and use
malloc_benchmark.cpp for benchmarking functions from malloc.h.
Bug: 137795072
Test: Ran new benchmark.
Change-Id: I76856de833032da324ad0bc0b6bd85a4ea8c253d
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Test: Compiles.
Change-Id: I92095bd0ee59a3b98ee8deba1c3efc4685389a1b
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Many of our benchmarks are basically just "call one function with a
fixed argument". We don't need to keep repeating all the boilerplate for
that.
This also ensures we don't forget the benchmark::DoNotOptimize, which --
in addition to being a good idea in general -- specifically solves the
problem with gettid benchmark and provides a more accurate result by
removing the indirection through a function pointer.
Test: ran benchmarks
Change-Id: Id67535243678cd0d48f51cf25141e2040da9af03
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Adding some benchmarks that keep a certain number of allocation
around. This benchmark should not be used as an absolute for determining
what is a good/bad native allocator. However, it should be used to make
sure that numbers are not completely changed between allocator versions.
Also update the malloc sql benchmark to match the same style as these
new benchmarks.
Bug: 129743239
Test: Ran these benchmarks.
Change-Id: I1995d98fd269b61d9c96efed6eff3ed278e24c97
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Also, update the benchmark loop for modern C++.
Test: Ran benchmarks.
Change-Id: I925446b893793eb8c2c6759716cdd3dbbcf1e7c1
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Fixes -Wzero-as-null-pointer-constant warning.
Test: m
Bug: 68236239
Change-Id: I5b4123bc6709641315120a191e36cc57541349b2
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Add a hand-rolled maps line parser as something to compare our realistic
sscanf benchmark against. Also add benchmarks for the ato*/strto* family.
This patch doesn't fix the tests, which seem to have been broken by
the recent google-benchmark upgrade despite the benchmarks themselves
all working just fine. To me that's a final strike against these tests
which are hard to maintain and not obviously useful, but we can worry
about what to do with them -- whether to just delete them or to try to
turn them into tests that actually have some value -- in a separate CL.
Bug: N/A
Test: ran benchmarks
Change-Id: I6c9a77ece98d624baeb049b360876ef5c35ea7f2
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Instead of requiring the need to maintain a list of all the benchmarks,
add a programmatic way to generate all of the benchmarks.
This generation runs the benchmarks in alphabetical order.
Add a new macro BIONIC_BENCHMARK_WITH_ARG that will be the default argument
to pass to the benchmark. Change the benchmarks that require default arguments.
Add a small example xml file, and remove the full.xml/host.xml files.
Update readme.
Test: Ran new unit tests, verified all tests are added.
Change-Id: I8036daeae7635393222a7a92d18f34119adba745
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Test: Unit tests.
Change-Id: I224ae4c7f195176eb8a87deddb2debcbf0f24ba3
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Test: Unit tests.
Change-Id: Ifb2911825f84b95fe64a803bfabd32fb81210eae
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