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path: root/src/main/java/com/google/devtools/build/lib/util/Fingerprint.java
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* Allow CustomCommandLine's mapFn to expand each object into multiple items.Gravatar tomlu2018-02-01
| | | | | | This is needed to migrate JavaCompileAction away from CustomMultiArgv. PiperOrigin-RevId: 184136486
* Add memory-efficient map for storing nested set -> digest.Gravatar tomlu2018-01-31
| | | | | | | | | Instead of using ConcurrentHashMap, we use a dead-simple open addressed hash hable with a giant byte array with 16-byte slots. We then read or write fingerprints straight into and out of the array, obviating the need to generate intermediate garbage. Locking mechanism is a read-write lock. This should be faster than full synchronisation for read-heavy loads. RELNOTES: None PiperOrigin-RevId: 184019301
* Suffix fingerprint of iterable with lengthGravatar michajlo2017-03-31
| | | | | | | This should be morally equivalent to prefixing, with the benefit that we won't prematurely expand NestedSets (not cheap) to get the length. PiperOrigin-RevId: 151721361
* Streamline Fingerprint implementationGravatar Michajlo Matijkiw2016-12-15
| | | | | | | | | | | | Thread all updates through a CodedOutputStream. This has the benefit of potentially hashing less data, as many int values can be represented more compactly, and reducing the churn of hashing strings (generally), since CodedOutputStream is already heavily optimized for this. While the buffer size is a little generous, it winds up paying off. -- PiperOrigin-RevId: 142151062 MOS_MIGRATED_REVID=142151062
* Remove varargs Fingerprint#addStringsGravatar Michajlo Matijkiw2016-12-07
| | | | | | | | Doesn't add much on top of the Iterable version in the current state of things, and it is too easy to confuse with addString. -- PiperOrigin-RevId: 141300940 MOS_MIGRATED_REVID=141300940
* Use MessageDigest instead of HashFunction for FingerprintGravatar Michajlo Matijkiw2016-12-01
| | | | | | | | | This allows us to reset and reuse the underlying digest implementation, which guava's HashFunction doesn't allow. We do take the clone-if-possible page out of guava's book. -- MOS_MIGRATED_REVID=140624836
* Rephrase Fingerprint in terms of guava HashFunction.Gravatar Eric Fellheimer2016-07-12
| | | | | | | This minimizes API divergence and allows us to make use of performance enhancements in guava, such as https://github.com/google/guava/issues/1197. -- MOS_MIGRATED_REVID=127108107
* Remove Fingerprint.toString() to avoid relying on MessageDigest.clone().Gravatar Googler2016-07-04
| | | | | -- MOS_MIGRATED_REVID=126566280
* Add nullable variants to Fingerprint.Gravatar Ulf Adams2016-04-20
| | | | | -- MOS_MIGRATED_REVID=120325869
* Rationalize copyright headersGravatar Damien Martin-Guillerez2015-09-25
| | | | | | | | | | | The headers were modified with `find . -type f -exec 'sed' '-Ei' 's|Copyright 201([45]) Google|Copyright 201\1 The Bazel Authors|' '{}' ';'` And manual edit for not Google owned copyright. Because of the nature of ijar, I did not modified the header of file owned by Alan Donovan. The list of authors were extracted from the git log. It is missing older Google contributors that can be added on-demand. -- MOS_MIGRATED_REVID=103938715
* Make exception in Fingerprint.java thrown in case of "impossible" missing ↵Gravatar Janak Ramakrishnan2015-05-04
| | | | | | | MD5 error more informative so we can try to understand what's going on. -- MOS_MIGRATED_REVID=92734374
* Update from Google.Gravatar Han-Wen Nienhuys2015-02-25
-- MOE_MIGRATED_REVID=85702957
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