This avoids a stack overflow when a large buffer is expected for stack traces.
The small/large threshold we use here is a heuristic to avoid going beyond one page of memory.
PiperOrigin-RevId: 792277857
Change-Id: I2a20ee830175192d0bc61d43ba13d7da10fe7aca
Together with the frame sizes already being returned, this gives us the bounds on each stack frame.
Note that this may slightly affect MSVC in debug builds, as it does not respect ABSL_ATTRIBUTE_ALWAYS_INLINE without optimizations. To remedy this, either enable inlining (/Ob1 or higher), or write a wrapper that ensures any stack traces obtained are robust to frames being added (such as by manually filtering everything below the caller).
Do not depend on the new APIs publicly. They are subject to change or removal.
PiperOrigin-RevId: 740075920
Change-Id: I6cd0909e7be3af4c9f32d39633230f655946b6a8
--
04cb3b22497190170aa5b774e98080c5de2ba60b by Abseil Team <absl-team@google.com>:
Alternative bit mixer for LowLevelHash on ARM
LowLevelHash's bit-mixer is inefficient on ARM because it calculates a 128-bit product of two 64-bit numbers. On ARM, this requires a sequence of two instructions with a high combined latency and poor throughput. This change provides alternative bit-mixing code for ARM that uses only 64-bit arithmetic (multiplication, xor, and left-shifts) and speeds things up considerably.
The bit-mixing code for ARM was inspired by by Woothash[1] and xxh3[1]. Once I landed on a sequence of operations that provided good mixing, I used a test harness to search for the combination of shift / rotate factors that provided the best mixing, as indicated by SMHasher hash quality tests. The new mixing code passes 13 out of 15 of the hash quality test suites in SMHasher, with the two failures being in the noise range: e.g. 1 collision vs. zero expected in a keyset of ~8m keys.
[1]: https://github.com/tommyettinger/waterhash/blob/49f5cf0b63b9/woothash.h#L16-L20
[2]: https://github.com/Cyan4973/xxHash/blob/6853ddc36e46/xxhash.h#L3240-L3265
PiperOrigin-RevId: 391833008
--
17a4de1f9d623155c75b19285d414cd55a487cd6 by Saleem Abdulrasool <abdulras@google.com>:
debugging: add support for unwinding on RISCV Linux
This adds partial support for unwinding the RISCV call stack. It is largely
duplicated from the AArch64 support with alterations for the ELF RISCV psABI.
This covers RISCV64 and RISCV32, though not the ILP32E calling convention.
PiperOrigin-RevId: 391818522
--
32c93e449327b2cea32b32f6365e84b420fe1ed3 by Gennadiy Rozental <rogeeff@google.com>:
New storage for types smaller than 8 bytes.
Also adding new read interface for types smaller than or rqual to 8 bytes to avoid passing the pointer.
PiperOrigin-RevId: 391726822
--
e987ac08a7787801cbfc7d7c96649e97fa8cff1a by Abseil Team <absl-team@google.com>:
Extern template `find_first_non_full` to reduce linkage size for TU with single not inlined function.
PiperOrigin-RevId: 391718862
--
73af9bfcb5bf045089133e18bbd20eb5bb699172 by Gennadiy Rozental <rogeeff@google.com>:
Make most non-mutable most int128 methods and friend free functions constexpr.
Some functions are implemented offline (at least in some configurations) and can't be made constexpr. Mutable methods can't be made constexpr until we drop c++11 support.
Fixes#978
PiperOrigin-RevId: 391706535
GitOrigin-RevId: 04cb3b22497190170aa5b774e98080c5de2ba60b
Change-Id: If051fad5ff004e2e82fa53618fc04a6fe3d2d4be
--
69b5d0b2a5adb49a53e51f9da6848eaa484242fe by Derek Mauro <dmauro@google.com>:
Changes the absl::Duration factory functions to disallow types that
are convertible to int or double, instead requiring that the argument
itself is indeed an integer or a floating-point number. This will
prevent callers from passing arguments, such as std::atomic<T>.
This change is an API break. Information and a tool to fix issues
can be found at
https://abseil.io/docs/cpp/tools/upgrades/duration-conversions
PiperOrigin-RevId: 387153494
--
786063e438ab6a55ac4baa88ad4d20a8293be52a by Evan Brown <ezb@google.com>:
Make ctrl_t be an enum class.
This adds type safety, and also when strict aliasing is enabled, the compiler will know that control bytes can't alias non-control bytes.
Also make H2() return h2_t.
PiperOrigin-RevId: 387120717
--
7e537aabec1c255d6e7c9d21232c597c1c2077bf by Evan Brown <ezb@google.com>:
Add some missing `const` keywords to ctrl_t* function parameters.
PiperOrigin-RevId: 386976062
--
da53ac6d91cabd951e81dd0a145e1e52b918955f by Martijn Vels <mvels@google.com>:
Change Seek and InitOffset to return nullptr instead of assert / fail.
This makes it consistent with the rest of the API (Next, Previous, Skip) and hardens it against invariants that are harder (or less likey) to be upheld correctly by the caller.
PiperOrigin-RevId: 386963283
--
a4d1faac020d5025edf53ce81808e5db68da7d89 by Abseil Team <absl-team@google.com>:
PC / Backtrace / Symbolization for Emscripten.
PiperOrigin-RevId: 386957724
--
97f2c47d83ba9d3ac89e1f55bd06897686ffd063 by Martijn Vels <mvels@google.com>:
Fix static casts ([-Wimplicit-int-conversion])
PiperOrigin-RevId: 386951646
--
9530c795248543817cbc4013953baa09c35f5e1a by Abseil Team <absl-team@google.com>:
Fix incorrect header guard in cord_rep_btree_navigator.h
PiperOrigin-RevId: 386907904
--
90ce5872406df2b7f4c428683741dc13a572267e by Abseil Team <absl-team@google.com>:
Small grammar fixes for some StatusCode descriptions.
PiperOrigin-RevId: 386906217
--
b30a2fd777f12a04a4d512f37a34614b0d05ce99 by Derek Mauro <dmauro@google.com>:
Skip length checking when constructing absl::string_view from std::string.
The length check causes unnecessary code bloat.
PiperOrigin-RevId: 386857974
--
fa171536c359bfa2a1b80297e844519bb9ee7791 by Martijn Vels <mvels@google.com>:
Introduce CordRepBtreeNavigator
CordRepBtreeNavigator implements bi-directional navigation over all data edges stored inside a Cord Btree.
PiperOrigin-RevId: 386519102
GitOrigin-RevId: 69b5d0b2a5adb49a53e51f9da6848eaa484242fe
Change-Id: I1b35188d66133f8cb73d346bc5564aac4e0b3e80
--
c99f979ad34f155fbeeea69b88bdc7458d89a21c by Derek Mauro <dmauro@google.com>:
Remove a floating point division by zero test.
This isn't testing behavior related to the library, and MSVC warns
about it in opt mode.
PiperOrigin-RevId: 285220804
--
68b015491f0dbf1ab547994673281abd1f34cd4b by Gennadiy Rozental <rogeeff@google.com>:
This CL introduces following changes to the class FlagImpl:
* We eliminate the CommandLineFlagLocks struct. Instead callback guard and callback function are combined into a single CallbackData struct, while primary data lock is stored separately.
* CallbackData member of class FlagImpl is initially set to be nullptr and is only allocated and initialized when a flag's callback is being set. For most flags we do not pay for the extra space and extra absl::Mutex now.
* Primary data guard is stored in data_guard_ data member. This is a properly aligned character buffer of necessary size. During initialization of the flag we construct absl::Mutex in this space using placement new call.
* We now avoid extra value copy after successful attempt to parse value out of string. Instead we swap flag's current value with tentative value we just produced.
PiperOrigin-RevId: 285132636
--
ed45d118fb818969eb13094cf7827c885dfc562c by Tom Manshreck <shreck@google.com>:
Change null-term* (and nul-term*) to NUL-term* in comments
PiperOrigin-RevId: 285036610
--
729619017944db895ce8d6d29c1995aa2e5628a5 by Derek Mauro <dmauro@google.com>:
Use the Posix implementation of thread identity on MinGW.
Some versions of MinGW suffer from thread_local bugs.
PiperOrigin-RevId: 285022920
--
39a25493503c76885bc3254c28f66a251c5b5bb0 by Greg Falcon <gfalcon@google.com>:
Implementation detail change.
Add further ABSL_NAMESPACE_BEGIN and _END annotation macros to files in Abseil.
PiperOrigin-RevId: 285012012
GitOrigin-RevId: c99f979ad34f155fbeeea69b88bdc7458d89a21c
Change-Id: I4c85d3704e45d11a9ac50d562f39640a6adbedc1
--
bdce7e57e9e886eff1114d0266781b443f7ec639 by Derek Mauro <dmauro@google.com>:
Change {Get|Set}EnvironmentVariable to {Get|Set}EnvironmentVariableA for
compatibility with /DUNICODE.
PiperOrigin-RevId: 239229514
--
2276ed502326a044a84060d34eb19d499e3a3be2 by Derek Mauro <dmauro@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 239228622
--
a462efb970ff43b08a362ef2343fb75ac1295a50 by Derek Mauro <dmauro@google.com>:
Adding linking of CoreFoundation to CMakeLists in absl/time.
Import https://github.com/abseil/abseil-cpp/pull/280.
Fix#283
PiperOrigin-RevId: 239220785
--
fc23327b97f940c682aae1956cf7a1bf87f88c06 by Derek Mauro <dmauro@google.com>:
Add hermetic test script that uses Docker to build with a very recent
version of gcc (8.3.0 today) with libstdc++ and bazel.
PiperOrigin-RevId: 239220448
--
418c08a8f6a53e63b84e39473035774417ca3aa7 by Derek Mauro <dmauro@google.com>:
Disable part of the variant exeception safety test on move assignment
when using versions of libstd++ that contain a bug.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87431#c7
PiperOrigin-RevId: 239062455
--
799722217aeda79679577843c91d5be62cbcbb42 by Matt Calabrese <calabrese@google.com>:
Add internal-only IsSwappable traits corresponding to std::is_swappable and std::is_nothrow_swappable, which are used with the swap implementations of optional and variant.
PiperOrigin-RevId: 239049448
--
aa46a036038a3de5c68ac5e5d3b4bf76f818d2ea by CJ Johnson <johnsoncj@google.com>:
Make InlinedVectorStorage constructor explicit
PiperOrigin-RevId: 239044361
--
17949715b3aa21c794701f69f2154e91b6acabc3 by CJ Johnson <johnsoncj@google.com>:
Add absl namesapce to internal/inlined_vector.h
PiperOrigin-RevId: 239030789
--
834628325953078cc08ed10d23bb8890e5bec897 by Derek Mauro <dmauro@google.com>:
Add test script that uses Docker to build Abseil with gcc-4.8,
libstdc++, and cmake.
PiperOrigin-RevId: 239028433
--
80fe24149ed73ed2ced995ad1e372fb060c60427 by CJ Johnson <johnsoncj@google.com>:
Factors data members of InlinedVector into an impl type called InlinedVectorStorage so that (in future changes) the contents of a vector can be grouped together with a single pointer.
PiperOrigin-RevId: 239021086
--
585331436d5d4d79f845e45dcf79d918a0dc6169 by Derek Mauro <dmauro@google.com>:
Add -Wno-missing-field-initializers to gcc compiler flags.
gcc-4.x has spurious missing field initializer warnings.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36750
PiperOrigin-RevId: 239017217
--
94602fe4e33ee3a552a7f2939c0f57a992f55075 by Abseil Team <absl-team@google.com>:
Formatting fixes.
PiperOrigin-RevId: 238983038
--
a1c1b63c08505574e0a8c491561840cecb2bb93e by Derek Mauro <dmauro@google.com>:
Add hermetic test script that uses Docker to build with a very recent
version of clang with libc++ and bazel.
PiperOrigin-RevId: 238669118
--
e525f8d20bc2f79a0d69336b902f63858f3bff9d by Derek Mauro <dmauro@google.com>:
Disable the test optionalTest.InPlaceTSFINAEBug until libc++ is updated.
PiperOrigin-RevId: 238661703
--
f99a2a0b5ec424a059678f7f226600f137b4c74e by Derek Mauro <dmauro@google.com>:
Correct the check for the FlatHashMap-Any test bug (list conditions
instead of platforms when possible)
PiperOrigin-RevId: 238653344
--
777928035dbcbf39f361eb7d10dc3696822f692f by Jon Cohen <cohenjon@google.com>:
Add install rules for Abseil CMake.
These are attempted to be limited to in-project installation. This serves two purposes -- first it's morally the same as using Abseil in-source, except you don't have to rebuild us every time. Second, the presence of an install rule makes life massively simpler for package manager maintainers.
Currently this doesn't install absl tests or testonly libraries. This can be added in a follow-up patch.
Fixes#38, Fixes#80, Closes#182
PiperOrigin-RevId: 238645836
--
ded1c6ce697c191b7a6ff14572b3e6d183117b2c by Derek Mauro <dmauro@google.com>:
Add hermetic test script that uses Docker to build with a very recent
version of clang with libstdc++ and bazel.
PiperOrigin-RevId: 238517815
GitOrigin-RevId: bdce7e57e9e886eff1114d0266781b443f7ec639
Change-Id: I6f745869cb8ef63851891ccac05ae9a7dd241c4f
--
578b3ed641b8d92769a34d73389dfff5559925e6 by Abseil Team <absl-team@google.com>:
Prevents tail call optimization for
GetStackFrames[WithContext]/GetStackTrace[WithContext] functions, so the
skipped frames will not change because of optimization difference.
PiperOrigin-RevId: 217342437
--
31fad1337e146a6ec74ae887d95920373e36c8dd by Abseil Team <absl-team@google.com>:
Fixed syntax on flat_hash_set documentation for insert.
PiperOrigin-RevId: 217208659
GitOrigin-RevId: 578b3ed641b8d92769a34d73389dfff5559925e6
Change-Id: I121c42861e8321ab561326978ac8972c68f066d0
--
eca34da4ccb7bb6a580f1364dff9ca053418fa3b by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 214305433
--
35393bdd21a87c4286f945fd34dda93afc4e0cd6 by Abseil Team <absl-team@google.com>:
Move some implementation details of string_view around to facilitate compiling on NVCC.
Abseil does not officially support NVCC as a reminder.
PiperOrigin-RevId: 214184876
--
61846cab9ab9476a4676ecade7173f68978cd038 by Jorg Brown <jorg@google.com>:
Move the initialization values for constants back to their declaration.
PiperOrigin-RevId: 214135927
--
7ac7df6c5f78f2faf419268c04618b936cb26065 by Abseil Team <absl-team@google.com>:
Performance improvements on format parser.
PiperOrigin-RevId: 214032366
--
90b4c0cf20e9feaa257a7ece40adaf7db40a60a7 by Xiaoyi Zhang <zhangxy@google.com>:
Add static_assert check to absl::visit to make sure all overloads of the visitor return the same type, as required by the C++ standard.
PiperOrigin-RevId: 213677001
--
787995342101b4c181291cde9ecea3048536e4bd by Abseil Team <absl-team@google.com>:
Update comment to indicate finite durations are less than InfiniteDuration.
PiperOrigin-RevId: 213660328
--
d78f0dce7cc31218807e96d93b9e8513b6c80b24 by Jon Cohen <cohenjon@google.com>:
s/invariant/contract in the exceptions safety testing framework. This is a better term as these can be type invariants or function post conditions. They also are very similar ground as to what is covered by c++20 Contracts (and could even be replaced by them.
PiperOrigin-RevId: 213631019
--
0b3ff1a640de9a7391a6c233568802cf86245b0e by Abseil Team <absl-team@google.com>:
Add noinline attribute for GetStackTrace/GetStackFrames/... so the skipped frames will not change because of inlining difference.
PiperOrigin-RevId: 213009637
GitOrigin-RevId: eca34da4ccb7bb6a580f1364dff9ca053418fa3b
Change-Id: Iff1022fd24e440fcbdf3c4ab2a915ca8954daa31
- b527a3e4b36b644ac424e3c525b1cd393f6f6c40 Fix some typos in the usage examples by Jorg Brown <jorg@google.com>
- 82be4a9adf3bb0ddafc0d46274969c99afffe870 Fix typo in optional.h comment. by Abseil Team <absl-team@google.com>
- d6ee63bf8fc51fba074c23b33cebc28c808d7f07 Remove internal-only identifiers from code. by Daniel Katz <katzdm@google.com>
- f9c3ad2f0d73f53b21603638af8b4bed636e79f4 Use easier understandable names for absl::StartsWith and ... by Abseil Team <absl-team@google.com>
- 7c16c14fefee89c927b8789d6043c4691bcffc9b Add -Wno-missing-prototypes back to the LLVM copts. by Derek Mauro <dmauro@google.com>
- 2f4b7d2e50c7023240242f1e15db60ccd7e8768d IWYU | absl/strings by Juemin Yang <jueminyang@google.com>
- a99cbcc1daa34a2d6a2bb26de275e05173cc77e9 IWYU | absl/type by Juemin Yang <jueminyang@google.com>
- 12e1146d0fc76c071d7e0ebaabb62f0a984fae66 Use LLVM_FLAGS and LLVM_TEST_FLAGS when --compiler=llvm. by Derek Mauro <dmauro@google.com>
- cd6bea616abda558d0bace5bd77455662a233688 IWYU | absl/debugging by Juemin Yang <jueminyang@google.com>
- d9a7382e59d46a8581b6b7a31cd5a48bb89326e9 IWYU | absl/synchronization by Juemin Yang <jueminyang@google.com>
- 07ec7d6d5a4a666f4183c5d0ed9c342baa7b24bc IWYU | absl/numeric by Juemin Yang <jueminyang@google.com>
- 12bfe40051f4270f8707e191af5652f83f2f750c Remove the RoundTrip{Float,Double}ToBuffer routines from ... by Jorg Brown <jorg@google.com>
- eeb4fd67c9d97f66cb9475c3c5e51ab132f1c810 Adds conversion functions for converting between absl/tim... by Greg Miller <jgm@google.com>
- 59a2108d05d4ea85dc5cc11e49b2cd2335d4295a Change Substitute to use %.6g formatting rather than 15/1... by Jorg Brown <jorg@google.com>
- 394becb48e0fcd161642cdaac5120d32567e0ef8 IWYU | absl/meta by Juemin Yang <jueminyang@google.com>
- 1e5da6e8da336699b2469dcf6dda025b9b0ec4c9 Rewrite atomic_hook.h to not use std::atomic<T*> under Wi... by Greg Falcon <gfalcon@google.com>
GitOrigin-RevId: b527a3e4b36b644ac424e3c525b1cd393f6f6c40
Change-Id: I14e331d91c956ef045ac7927091a9f179716de0c
