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b20c539b8e21fee7d4d908a8a26a317a3de9d993 by Martijn Vels <mvels@google.com>:
Add CordRepBtree implementation
PiperOrigin-RevId: 385679196
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96f7753b7af5fd964537d5794dd597bb6e698071 by Derek Mauro <dmauro@google.com>:
Update Abseil dependencies
PiperOrigin-RevId: 385643956
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67bdae4c686f0df09cc7155633c03218bf23d177 by Abseil Team <absl-team@google.com>:
Fix up some small typos in error messages.
PiperOrigin-RevId: 385625107
GitOrigin-RevId: b20c539b8e21fee7d4d908a8a26a317a3de9d993
Change-Id: I8f602cfe9f7878b0558359ab15efb048caefb3a5
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007ce045d5d38a727ededdb5bf06e64785fd73bd by Martijn Vels <mvels@google.com>:
Add `cord_enable_btree` feature flag (default false).
PiperOrigin-RevId: 383729939
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98e7dc6a0407b0fd7b8713d883cdb3a766e0583d by Benjamin Barenblat <bbaren@google.com>:
Eliminate some byte swapping from randen_slow
Stop swapping bytes when serializing randen_slow’s Vector128 into and
out of memory. Instead, simply index different bytes in the AES round
function. This requires byte swapping the te{0..3} lookup tables, but it
produces an 8% speedup on my Xeon W-2135.
PiperOrigin-RevId: 383689402
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180b6bf45049188840d439b16a28e6b968669340 by Evan Brown <ezb@google.com>:
Minor simplification in drop_deletes_without_resize() - save probe_offset outside the lambda.
Also, add some consts, avoid an auto, and use lambda capture by value instead of reference.
I realized that the compiler can already optimize this - https://godbolt.org/z/Wxd9c4TfK, but I think this way makes the code a bit clearer.
PiperOrigin-RevId: 383646658
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781706a974c4dc1c0abbb6b801fca0550229e883 by Martijn Vels <mvels@google.com>:
Change storage to contain 3 bytes.
As per the comments in the code, this allows us to utilize all available space in CordRep that may otherwise be 'lost' in padding in derived clases. For the upcoming CordrepBtree class, we want a strong guarantee on having a 64 bytes aligned implementation.
PiperOrigin-RevId: 383633963
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8fe22ecf92492fa6649938a2215934ebfe01c714 by Derek Mauro <dmauro@google.com>:
Remove reference to str_format_arg.h, which no longer exists
PiperOrigin-RevId: 383517865
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79397f3b18f18c1e2d7aea993b687329d626ce64 by Benjamin Barenblat <bbaren@google.com>:
Use absl::uint128 for AES random number generator
Replace randen’s internal 128-bit integer struct, u64x2, with
absl::uint128. This eliminates some code and improves support for
big-endian platforms.
PiperOrigin-RevId: 383475671
GitOrigin-RevId: 007ce045d5d38a727ededdb5bf06e64785fd73bd
Change-Id: Ia9d9c40de557221f1744fb0d6d4d6ca7ac569070
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642ab296a2c9629c44f3f2ce6911cd2488bcf416 by Derek Mauro <dmauro@google.com>:
Remove an obsolete check in CMakeLists.txt
PiperOrigin-RevId: 352852564
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ce78cb96bcfd162737dbcf35005da3d1d6a3486b by Abseil Team <absl-team@google.com>:
Clarify that the calling *thread* must have locked the mutex in order to unlock
it.
PiperOrigin-RevId: 352801804
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24e1f5f72756046f5265abf618e951c341f09b8d by Derek Mauro <dmauro@google.com>:
Fixes failing CMake string comparisons
https://cmake.org/cmake/help/latest/policy/CMP0054.html
Fixes #791
PiperOrigin-RevId: 352791054
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0ac10bc3f4dca2c4c4b51d7b8196a2eaee9537a1 by Abseil Team <absl-team@google.com>:
Introduce CordRepRing class
This change introduces the CordRepRing class that implements all the lower level / internal implementation for upcoming CordRepRing ring buffer support in cord.
PiperOrigin-RevId: 352771994
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4bd36dda61760785844f0f29f26d90cc18046f75 by Abseil Team <absl-team@google.com>:
Optimize InlineData representation for cord sampling (cordz)
This CL changes InlineData to allow us to store a (future) Cordz Info pointer directly into the inline representation:
- make InlineData a class that provides a public API to set the active union members (tree or chars) and safely access that data.
- change 'tree' and 'profiled' bits to be the 2 least significant bits, allowing us 62 continquous bits for storing a Cordz Info pointer.
PiperOrigin-RevId: 352642411
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dc55ba71bbce0e6a83e05a453990c51ac3d68426 by Mark Barolak <mbar@google.com>:
Add unit test coverage for the mutating overload of absl::AsciiStrToLower.
PiperOrigin-RevId: 352626006
GitOrigin-RevId: 642ab296a2c9629c44f3f2ce6911cd2488bcf416
Change-Id: I6c5929dd830d3c630e14e7fd5387fc3e25a69100
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0bfa836596a9c787a2f0bdc283011dd1f6810c6e by Benjamin Barenblat <bbaren@google.com>:
Ignore missing CPU frequency on more architectures
Linux on MIPS, PA-RISC, RISC-V, and SystemZ doesn’t expose the nominal
CPU frequency via /sys, so don’t worry if `NominalCPUFrequency` returns
1.0 on those platforms.
Some POWER machines expose the CPU frequency; others do not. Since we
can’t predict which type of machine the tests will run on, simply
disable testing for `NominalCPUFrequency` on POWER.
PiperOrigin-RevId: 347079873
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492b6834ed4a07cbc3abccd846f7e37d8c556ee5 by Benjamin Barenblat <bbaren@google.com>:
Use ABSL_HAVE_THREAD_LOCAL macro instead of copying code
Reduce code duplication by checking the ABSL_HAVE_THREAD_LOCAL macro
instead of copying code from base/config.h.
PiperOrigin-RevId: 347079561
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8d656efce4da9cb032094377e58493d98427a536 by Abseil Team <absl-team@google.com>:
Rollback
PiperOrigin-RevId: 347078779
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221bc69ec6dd7e2777ffcff6942584f979ef6382 by Abseil Team <absl-team@google.com>:
Add flag for 'shallow subcord' feature for experimental ring buffer rollout
There is a potential trade-off of CPU cost vs over-sharing cord data for subcord of large cords. This flag allows making subcords shallow for ringbuffers (with a potential larger waste of referenced source cords), which allows us to make subcord fast for this apps that do no persist (unmodified / plain copied) sub cords.
This change also introduces constants for the default settings, intended to keep the internal cord settings concistent with external flags.
PiperOrigin-RevId: 347053271
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00a56c24293566734009f6bf2169a83fb37a35ba by Abseil Team <absl-team@google.com>:
Revert the usage of variant<> in Cord iterator and reader.
The introduction of the variant may lead to some missed compiler optimizations.
PiperOrigin-RevId: 347053041
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c7b7b5ed7e3ab46b1e75b80f1a7de0bda26c8f70 by Chris Kennelly <ckennelly@google.com>:
Release library for integer power-of-2 functions and bit counting.
PiperOrigin-RevId: 347035065
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5a035c0d9840b251967f9e7039fc6a4e01dd52f3 by Abseil Team <absl-team@google.com>:
Restructure Cord::ChunkIterator for future ring buffer support.
PiperOrigin-RevId: 346890054
GitOrigin-RevId: 0bfa836596a9c787a2f0bdc283011dd1f6810c6e
Change-Id: I3a58e2a44cb4c6f2116c43e2a4ccbc319d3ccecf
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6e9f93888bbe6718997ed90bbd049f1f3572b066 by Abseil Team <absl-team@google.com>:
Fix status to be safe for self move assignment.
PiperOrigin-RevId: 346815392
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35cae74a977f258e81dfbe925fb5a34cb6632036 by Gennadiy Rozental <rogeeff@google.com>:
Eliminate unnecessary access to the global vars.
PiperOrigin-RevId: 346777168
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e7e786c243069060f5d6c1c945decb4b0b83f95b by Andy Getzendanner <durandal@google.com>:
Internal change.
PiperOrigin-RevId: 346685656
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4ccd41c48f1a83cfa20b3ea534f743dd7d788376 by Abseil Team <absl-team@google.com>:
Move CordRep Ref() and Unref() logic into cord_internal.h
This change moves Ref() and Unref() logic out of cord.cc into cord_internal. The main purpose is to make upcoming ring buffer changes easier to isolate from existing cord.cc code. Notice that this removes the nullptr check from Unref() and now requires it to be non null (which held true most times). We may need to rethink if the 'unref unlikely one' is the common case: are cordreps most likely shared? This may be something between 'root' and non root nodes, i.e., is it more likely for leaf / flat nodes in large cords to be shared than top level cordreps being shared? Vice versa? Benchmarks say that we mostly shouldn't care, the caveat being that atomic ops seem more expensive on upcoming archs (arcadia) so we should error on the side of an extra IsOne() branch saving us single owned atomic ops.
PiperOrigin-RevId: 346676121
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f0babab103b9e60d61ba09482d468985e43eceb3 by Samuel Benzaquen <sbenza@google.com>:
Fix iterator based constructor and `.insert` members to only require
EmplaceConstructible as the standard specifies.
PiperOrigin-RevId: 346616707
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8f48eedda02277f9c96a88ed7726e34b557cce20 by Evan Brown <ezb@google.com>:
Fix a bug in binary_search_impl when there's a transparent, three-way comparator that has different equivalence classes for different lookup types.
Add a new can_have_multiple_equivalent_keys method to share the common logic for these cases.
PiperOrigin-RevId: 346605948
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649183cb3cc9383431de9c81fb1c0f885d4001ae by Abseil Team <absl-team@google.com>:
Add benchmark for accessing a Duration flag.
PiperOrigin-RevId: 346594843
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fefdb046520871af63ce2229e2f7cccfc0483dea by Abseil Team <absl-team@google.com>:
Restructure CordReader for upcoming ring buffer changes.
PiperOrigin-RevId: 346410642
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8b2f50e7da0ebab06ead5f94e366e984ca23cb6a by Abseil Team <absl-team@google.com>:
Wire in an internal-only flag to toggle upcoming ring buffer changes on/off for experimentation.
PiperOrigin-RevId: 346199111
GitOrigin-RevId: 6e9f93888bbe6718997ed90bbd049f1f3572b066
Change-Id: I8f34866b25a79209cb5448bbb28dd3044111d2e9
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Abseil Team