deprecation of ATOMIC_FLAG_INIT.
Another option would have been to use macros to only initialize
std::atomic_flag before C++20, but I decided to use one compilation
path instead.
The major difference between std::atomic_flag and std::atomic<bool> is
that the former is guaranteed to be lock-free, but we already assume
std::atomic<bool> is lock-free in many places.
https://en.cppreference.com/w/cpp/atomic/atomic_flag
PiperOrigin-RevId: 487397075
Change-Id: I3f1c539ec8b2ca58547282e69ed73e93243e8efe
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL enables these warnings and fixes the remaining known issues.)
Bug: chromium:1292951
PiperOrigin-RevId: 480981210
Change-Id: I92d5023c6833e24d6aa29b10d433116329972f41
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on miscellaneous non-test source files.)
Bug: chromium:1292951
PiperOrigin-RevId: 473054605
Change-Id: Ifd7b24966613ca915511a3a607095508068200b8
internal/stacktrace_x86-inl.inc includes internal/raw_logging.h and therefore needs
a direct dependency to satisfy Bazel layering_check (Clang -fmodules-strict-decluse).
Clang before https://reviews.llvm.org/D132779 does not report the issue becasue:
* internal/stacktrace_x86-inl.inc is an .inc file and is not checked as a main file
* internal/stacktrace_x86-inl.inc is a textual header and older Clang incorrectly
considers there is no requesting module and suppresses the error.
PiperOrigin-RevId: 472795469
Change-Id: Ia4ad667ea80b2590cef1adfd22af025c8df826ac
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .cc files in debugging/internal/.)
Bug: chromium:1292951
PiperOrigin-RevId: 470812243
Change-Id: I5578030bb42ba73cb83d4df84f89e431ceac8992
In the case that we are unwinding with context, if the retreived frame pointer
matches the signal context, assume that the value is valid and do not perform
confidence checks. In any other case, continue to perform some validation to
avoid returning an incorrect frame pointer.
Given that the VDSO path is currently untested, remove the code to simplify the
logic in the frame walking.
PiperOrigin-RevId: 465360612
Change-Id: Iac656012182a12814bafecf20225ba68b90b4db1
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .cc files in dirs a-h.)
Bug: chromium:1292951
PiperOrigin-RevId: 464541951
Change-Id: If23b63ccea8e9b730159ff1c7288e9300a40b6bd
The changes in d6f96eda14 enabled handling cases
where the stack may be non-contiguous or not fully symbolicated (e.g. in cases
of alternate signal stacks). However, it did not properly honour the requests
from the caller to perform a strict unwinding where such frames are terminated
upon the discontinuity. This repairs that condition.
Hoist the alignment check since that is safe to perform early.
PiperOrigin-RevId: 464160529
Change-Id: Ic65645928ec60c2a3b4844f3abd4fed1b991edab
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .h and win32 .inc files.)
Bug: chromium:1292951
PiperOrigin-RevId: 463835431
Change-Id: If8e5f7f651d5cd96035e23e4623bdb08a7fedabe
The frame pointer sanity check in NextStackFrame() was more restrictive than it is necessary. The frame pointer is used to load the saved link-register and the address for the next stack frame. So it only needs to be 8-byte aligned. The aarch64 ABI does not specify an alignment requirement for the frame point.
PiperOrigin-RevId: 463368519
Change-Id: I473e05181603288f14734fe29013900c7505e201
POSIX is unclear what state a file descriptor is in after a signal is delivered in the middle of close. On Linux, the file is closed even if it returns -1 with errno=EINTR.
As such, do not use errno at all when closing files.
PiperOrigin-RevId: 462638735
Change-Id: Ie73da1f3c83b1099bef146e1ea32e9a4818597cf
In some places, we check if the amount we read is a multiple of some amount we are interested in. However, ReadFromOffset returns -1 when it errors. Certain record sizes can cause ReadFromOffset to cause us to think that we succeeded when we did not.
It also results in confusing messages in logs.
PiperOrigin-RevId: 461798762
Change-Id: I8c9c7f2cea4d1789e95e50833d5405239a47f02e
Add a hook to permit checking whether an address is in bounds for the stack.
PiperOrigin-RevId: 460997074
Change-Id: Ib3b4d0cf656e614aa083457abb079c40ef8db0ff
There are many reports that sigaltstack() on Apple platforms stops
backtrace() from tracing an original stack, e.g.
* d39ead4105
* https://reviews.llvm.org/D28265
If we disable an alternate stack for signal handler, we won't be able to
catch stack overflow errors, but backrace() will work again.
This seems to have caused some regressions by causing a flaky failure in some
cases. Revert the change to enable investigation.
PiperOrigin-RevId: 459331687
Change-Id: Iaa4e4bfcb3013a75a2cd72768d980ac5e450f70c
The alternate signal stack may be sufficiently beyond the esimated frame size
(100k). If we run into the case that the frame is not in the correct direction
assume that the frames may be non-contiguous due to an alternate signal stack
layout. In such a case, if we find that there is an alternate stack configured,
ignore the discontiuity (assuming that it is a removable point-wise
discontinuity) and continue the stack unwinding. This permits us to capture
stack traces in more cases.
PiperOrigin-RevId: 458327775
Change-Id: Ia8b461847401492f72a23ba26601c72e0109402c
This allows symbolization to work if different parts of a binary's text are mapped differently, e.g. if they're mlock()ed or mapped onto huge pages.
PiperOrigin-RevId: 456600880
Change-Id: I069264f94cf834df9201968275a00828f5eb077e
Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1200
`backtrace` and `execinfo.h` can be provided by libexecinfo on uclibc and musl resulting in the following build failure with any user of abseil-cpp (such as collectd):
```
/home/buildroot/autobuild/instance-0/output-1/host/lib/gcc/sparc-buildroot-linux-uclibc/10.3.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: /home/buildroot/autobuild/instance-0/output-1/host/bin/../sparc-buildroot-linux-uclibc/sysroot/usr/lib/libabsl_stacktrace.so: undefined reference to `backtrace'
```
[...]
```
libgrpc++ . . . . . . no (libgrpc++ not found)
```
[...]
```
configure: error: "Some plugins are missing dependencies - see the summary above for details"
```
Fixes:
- http://autobuild.buildroot.org/results/6a0484412f020e763ce3ad5bda48f09c78645bff
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Merge dac52cd20e into 93ad4284ac
Merging this change closes#1200
COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1200 from ffontaine:master dac52cd20e
PiperOrigin-RevId: 456323163
Change-Id: I3d2206761524d36e2b227c571e2e513f6840ff75
When we would perform a stacktrace using the frame pointer walking, because we
did the adjustment for the return address separately, we were misaligning the
stack size and frame. Simplify the logic and correct the offset.
The recovered frame pointer provides us with the return address of the current
frame and the previous frame's frame pointer. Subsequently, we decide if we
want to record this frame or not. The value in `next_frame_pointer` already
points to the value from the previous stack frame (that is the next frame
pointer to iterate). As such, the value computed by `ComputeStackFrameSize` is
the value for the current frame. This was offset by one previously.
Take the opportunity to clean up some of the local comments, fixing typos and
splitting up the comments to reflect the lines that they are associated with.
PiperOrigin-RevId: 453744059
Change-Id: If14813e0ac36f327f4b7594472f2222d05c478aa
A few targets were missing `linkopts = ...` and so were not obeying
the project-wide default settings.
Omit any changes to cctz for now, because it's vendored from another project.
--
3d018c03a34bf273a4b24b3584ed77f0a6d21686 by Abseil Team <absl-team@google.com>:
Fix a spelling typo (s/boundries/boundaries).
PiperOrigin-RevId: 442041877
Change-Id: I608020697d37b85316bb9a0838e4b457659c926c
--
518b8119e51db24ce7fb0fd2fe537ec43825c3e6 by Dino Radakovic <dinor@google.com>:
absl/types/internal/variant: Make include guard uppercase
https://google.github.io/styleguide/cppguide.html#The__define_Guard
PiperOrigin-RevId: 441911692
Change-Id: I9837dd07f20204d8253f20627b0917a34dc21825
--
b91696c38310a7cae8c1ea9e2d479495f5dc3f69 by Greg Falcon <gfalcon@google.com>:
Add an internal-only API to wrap __builtin_prefetch() if available.
This private API is intended for future use by the Abseil implementation. Like any internal-namespaced function, it may be changed or removed at any time.
PiperOrigin-RevId: 441894616
Change-Id: Iaa48bd4680b373f4a0d5afab0cb35e2a1908595f
--
0f01e8b0551a662e02dff60840c54320f987315f by Derek Mauro <dmauro@google.com>:
C++20: Use the standard `constinit` keyword for `ABSL_CONST_INIT` when available
PiperOrigin-RevId: 441778874
Change-Id: I70c616469752ff23b326b1c615437599f42cc6aa
GitOrigin-RevId: 3d018c03a34bf273a4b24b3584ed77f0a6d21686
--
f4c7e510922668c68be4aa79a00867c3d3ca9f95 by Derek Mauro <dmauro@google.com>:
Many improvements to LeakChecker builds
The presence of the LeakChecker is now detected when possible. GCC
users using LeakChecker in standalone mode still need to use
-DLEAK_CHECKER. This is now documented in the header.
The hacky targets used for testing leak checking have been removed in
favor of testing in AddressSanitizer mode on Kokoro.
Fixes#885Fixes#1153
PiperOrigin-RevId: 441203393
Change-Id: Ibe64ef6b104bcaf31839ff7184e558cc86abdd1c
--
5c70a23aa83b8152ab95d2cf21662fc63c80ef7d by Abseil Team <absl-team@google.com>:
Add a benchmark for stacktrace
PiperOrigin-RevId: 441196473
Change-Id: I4c9aa2e797aa2cae09abfaaee3abe5c09eb62fc4
--
50b406052273b9d5bad04a7860a96e4d5d956c02 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 441114481
Change-Id: I667af7a50d5631ca91289dd24c91ba90233e0184
--
568b4eaac120b420bce5290179d407d2b57d5bae by Dino Radakovic <dinor@google.com>:
Internal change
PiperOrigin-RevId: 440894155
Change-Id: Ia587ffc65a8321126585fb363b7c0ca8cc2a0da2
--
d53948eace4f3a10ac5a6c1496dc51b81adc412c by Abseil Team <absl-team@google.com>:
Explicitly give internal linkage to symbols which are not used outside of their
translation units.
PiperOrigin-RevId: 440424519
Change-Id: I531c5e229d443375483b7550a34f48042589a99b
GitOrigin-RevId: f4c7e510922668c68be4aa79a00867c3d3ca9f95
--
ef2bf829c333f378ecc12f3259e3187cdb75a3d5 by Abseil Team <absl-team@google.com>:
debugging: fix the VDSO symbol name used for unwinding on RISC-V Linux
The name listed in `man vdso` is incorrect. Instead, use the name from `linux-5.16/arch/riscv/kernel/vdso/rt_sigreturn.S`
PiperOrigin-RevId: 439654174
Change-Id: Ib39d066f416681720068e806e828a2c76a14a532
--
43dfad824afd36cfc3e5049b4fea71a2bccb066c by Benjamin Barenblat <bbaren@google.com>:
Check printf format strings in str_format_convert_test
Add ABSL_PRINTF_ATTRIBUTE to appropriate functions in
strings/internal/str_format/convert_test. Correct
TypedFormatConvertTest.Char, which was accidentally passing values of
types larger than int to StrPrint.
PiperOrigin-RevId: 439388148
Change-Id: I6cde4e8e0c6455064138192430f07f4c990be0bc
--
f84b4ab2c3b070c8af0c82742ac7a8a4bf443bca by Derek Mauro <dmauro@google.com>:
Use __builtin_memcmp in the absl::string_view implementation
starting with MSVC 16.9, where it first appeared
This enables more constexpr operations
PiperOrigin-RevId: 439317316
Change-Id: Iaf1ce76b60901d4b2d5b96be5900c56572f57b15
GitOrigin-RevId: ef2bf829c333f378ecc12f3259e3187cdb75a3d5
uclibc-ng doesn't provide getauxval which results in the following build
failure on arm or ppc with any user of abseil-cpp such as grpc:
/home/buildroot/autobuild/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/10.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: /home/buildroot/autobuild/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libabsl_random_internal_randen_hwaes.so.2111.0.0: undefined reference to `getauxval'
To fix this build failure, check that __UCLIBC__ is not defined before
using getauxval (as Babel is not able to check function availability)
Fixes:
- http://autobuild.buildroot.org/results/775f3ca3dedebff29e212b29dfa896b7613b7a02
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
--
399d051d30f7a78c367bb1dc08829ffacbb619a6 by Abseil Team <absl-team@google.com>:
Fix a glitch in symbolization which could result in the same address being
correctly symbolized and "(unknown)" in the same crash report.
PiperOrigin-RevId: 435371003
Change-Id: I9f6a5684144be6d3d366584601d79fda9eefdce6
--
5dad813de52773e0bb09c6b2351e1bbadb53deac by Abseil Team <absl-team@google.com>:
Fix ABSL_HAVE_MMAP check in direct_mmap.h
This change makes the check for ABSL_HAVE_MMAP match the other checks
in absl. This fixes builds where ABSL_HAVE_MMAP is not defined.
PiperOrigin-RevId: 435190242
Change-Id: I11638ef315849cafcf4ea1611eee1a98c80e7dcb
GitOrigin-RevId: 399d051d30f7a78c367bb1dc08829ffacbb619a6
--
c49308e5361da572b5accdfe664757ca6bf7fed1 by Derek Mauro <dmauro@google.com>:
Disable TestArmThumbOverlap on platforms that don't support it
TestArmThumbOverlap includes a pair of test functions, one built in
arm mode and the other built in thumb mode.
Unfortunately when configured for armv6 hardfloat, gcc refuses to
build any functions in thumb mode (even if they don't actually use
floating point)
Closes#1112
PiperOrigin-RevId: 435078532
Change-Id: I090623d0f89839a5f9dde831756aba5267c9a45c
GitOrigin-RevId: c49308e5361da572b5accdfe664757ca6bf7fed1
--
ed829ac612f090375427c3488827c6e74deb2e3f by Derek Mauro <dmauro@google.com>:
Update latest GCC/Clang Linux tests to Bazel 5.0.0 and CMake 3.22.2
PiperOrigin-RevId: 429369775
--
76952303c4d942288c4e7657ffb5893cec54a132 by Martijn Vels <mvels@google.com>:
Optimize Cord::ChunkIterator now that CordRepConcat is removed
PiperOrigin-RevId: 429321455
--
dcd0d287793649aba9b98268c5783e449a34749f by Martijn Vels <mvels@google.com>:
Add IsDataEdge() and DataEdgeValue() helper functions.
This moves repetitive logic accessing data edges into its own header, and more strongly defines the notion of what a data edge is, enforcing the internal invariants. This will also be incorporated in optimized Cord iteration logic once CordRepConcat is totally removed from the Cord code.
PiperOrigin-RevId: 429307248
--
6a0903962155988085bf8656743fda9c4cdcba6c by Abseil Team <absl-team@google.com>:
Make it clear that the probability function given for the zipf distribution is unnormalized, i.e., sum(p(x) for x = 0..k) != 100%.
Quoting Section 7 of the paper cited in the comments, where this formula comes from (emphasis mine): "We will consider the two parameter generalization as defined in Dagpunar [1988] with the *unnormalized* probability function ..."
PiperOrigin-RevId: 429068258
--
3899ff6d444ba755148bc521a6ee031d9e9d4485 by Abseil Team <absl-team@google.com>:
Internal Changes
PiperOrigin-RevId: 428644856
--
319de702d2b537cbb76c4c71277ae89b349b162e by Benjamin Barenblat <bbaren@google.com>:
Support symbolization on PA-RISC
Null out supervisor bits in PA-RISC addresses before symbolizing, and
handle function descriptor tables correctly.
Change symbolize_test.cc to use 32-bit aligned addresses, allowing that
test to pass on PA-RISC.
PiperOrigin-RevId: 428590564
GitOrigin-RevId: ed829ac612f090375427c3488827c6e74deb2e3f
Change-Id: Ie01ff3b9365fd45e5a55f858038552679f3180d3
--
4409b08e103d6e7041d18a4d431290cafe3650cf by Derek Mauro <dmauro@google.com>:
Workaround NVCC compile error in StringConstant
Based on a patch in TensorFlow:
da83132aba/third_party/absl/com_google_absl_fix_mac_and_nvcc_build.patch (L262-L282)Fixes#1105
PiperOrigin-RevId: 426156316
--
25db16567ffc5400dfaa30b567398ede84729687 by Abseil Team <absl-team@google.com>:
Only look for Elf64_Auxinfo on 64-bit FreeBSD.
PiperOrigin-RevId: 426132251
--
2e73c3d9df59b2b769d2b8dca97f0ca5c512c72a by Abseil Team <absl-team@google.com>:
Add a problem hint to the error message when dereferencing the end() iterator.
PiperOrigin-RevId: 426120394
--
6befbf89c47963656b9e8151166ab4c8446d4785 by Martijn Vels <mvels@google.com>:
Make Cord Btree the default and remove opt out machinery
This change makes btree the default Cord format and removes the machinery to opt out. Subsequent changes will remove the 'true' constant evaluation and effectively cleanup all old code and references to CONCAT.
PiperOrigin-RevId: 426119728
--
f6a0a664029d61811d90bd484f4eefa0400b5dd4 by Abseil Team <absl-team@google.com>:
Mark Notification::HasBeenNotified as ABSL_MUST_USE_RESULT
PiperOrigin-RevId: 425927033
GitOrigin-RevId: 4409b08e103d6e7041d18a4d431290cafe3650cf
Change-Id: I86f1052c63c13c6486baf4108de2554f162f9c40
--
389189dbb322df0d0468ab13edf7dc185dc63833 by Abseil Team <absl-team@google.com>:
absl str_format.h can compile with -Wconversion and -Wsign-compare
PiperOrigin-RevId: 420799960
--
762e5adc429fc143756c42fe92fe8073c87c075f by Abseil Team <absl-team@google.com>:
GetStackTraceWithContext: Fix min_dropped_frames when no frames are recorded
Previously, if there were still frames to skip, they would be included
in min_dropped_frames.
PiperOrigin-RevId: 420766341
--
7d4374b8eaa410f4f98ec03d6a8997dccadfb271 by Abseil Team <absl-team@google.com>:
absl::flags compiles with -Wconversion and -Wsign-compare
PiperOrigin-RevId: 420476807
--
5f00f7805419d725fa1ff57b388e4c0750d1d6b0 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 420282152
--
bd5471fc34956acf3888bf90287b2aee4415c96d by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 420282033
--
61c78020804e4290e9b2fe151aeaf99b198716ee by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 420281867
--
dbe3aad24b65ea11664401a307ea3d2f28e8a7b9 by Derek Mauro <dmauro@google.com>:
Remove the incorrect test for the availability of [[nodiscard]]
It should have been ABSL_HAVE_CPP_ATTRIBUTE(nodiscard) instead of
ABSL_HAVE_ATTRIBUTE(nodiscard). As a result, some code is not
compliant with [[nodiscard]], so we cannot simply correct the availability
test.
Recommend that C++17-only code use the standard [[nodiscard] directly.
PiperOrigin-RevId: 420150702
GitOrigin-RevId: 389189dbb322df0d0468ab13edf7dc185dc63833
Change-Id: Idf6ebae3c4edd945c9032c7db3d0ab32d16e8078
--
07240ca7822d007cdcc79f2c40bd58b2c2010348 by Abseil Team <absl-team@google.com>:
Correct the comment from "AlphaNum" to "Arg".
PiperOrigin-RevId: 416139192
--
adcba4a6b3763626e1db7b1e8c108b3114903557 by Martijn Vels <mvels@google.com>:
Fix NewExternalRep() to require data being non-empty, and remove nullptr return.
PiperOrigin-RevId: 416135865
--
c0d14cd918fb16f15d1d84de9284b5c5ecc1f8f2 by Abseil Team <absl-team@google.com>:
Fix doc comment for absl::ascii_isprint().
The comment was incorrectly saying that it includes all whitespace.
It doesn't; the only whitespace char it includes is ' '.
PiperOrigin-RevId: 416112524
--
d83327800159c07002b6865e21232a12463e02dd by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 416099978
--
baf11e9ca42ca9140cdbf8075f971db8d65b1195 by Ilya Tokar <tokarip@google.com>:
Prevent compiler from optimizing Group_Match* benchmarks away.
Currently we benchmark single store of precomputed value.
Not all affected benchmarks show performance changes:
BM_Group_Match 0.53ns ± 1% 0.53ns ± 0% -0.42% (p=0.038 n=10+10)
BM_Group_MatchEmpty 0.26ns ± 1% 0.26ns ± 1% ~ (p=1.000 n=10+10)
BM_Group_MatchEmptyOrDeleted 0.26ns ± 1% 0.26ns ± 1% ~ (p=0.121 n=10+10)
BM_Group_CountLeadingEmptyOrDeleted 0.26ns ± 1% 0.45ns ± 0% +70.05% (p=0.000 n=10+8)
BM_Group_MatchFirstEmptyOrDeleted 0.26ns ± 0% 0.44ns ± 1% +65.91% (p=0.000 n=8+9)
But inspecting the generated code shows the difference,
e. g. BM_Group_MatchFirstEmptyOrDeleted
Before:
add $0xffffffffffffffff,%rbx
jne 30
After:
pcmpeqd %xmm0,%xmm0
pcmpgtb -0x30(%rbp),%xmm0
pmovmskb %xmm0,%eax
add: 0x23$0xffffffffffffffff,%rbx
jne 40
PiperOrigin-RevId: 416083515
--
122fbff893dc4571b3e75e4b241eb4495b925610 by Abseil Team <absl-team@google.com>:
Put namespace guard in ABSL_DECLARE_FLAG to make declaring a flag in a namespace a compiler error instead of a linker error.
PiperOrigin-RevId: 416036072
--
020fd8a20f5fa319e948846e003391fcb9e03868 by Ilya Tokar <tokarip@google.com>:
Make Cord::InlineRep::set_data unconditionally zero out memory.
Currently there is a single case where we don't zero out memory
as an optimization. Unconditional zeroing doesn't show any changes
in benchmarks, except for the unrelated improvement:
BM_CordPartialCopyToCord/1M/1 12.6ns ± 4% 12.6ns ± 4% ~ (p=0.857 n=16+19)
BM_CordPartialCopyToCord/1M/128 44.9ns ± 7% 45.0ns ± 3% ~ (p=0.468 n=18+17)
BM_CordPartialCopyToCord/1M/1k 64.5ns ± 4% 61.4ns ± 4% -4.82% (p=0.000 n=19+17)
BM_CordPartialCopyToCord/1M/8k 139ns ± 3% 128ns ±15% -7.76% (p=0.009 n=17+20)
BM_CordPartialCopyToCord/1M/16k 193ns ± 6% 168ns ± 6% -13.17% (p=0.000 n=17+17)
BM_CordPartialCopyToCord/4M/16k 199ns ± 4% 177ns ± 4% -11.36% (p=0.000 n=17+18)
BM_CordPartialCopyToCord/4M/32k 275ns ± 3% 250ns ± 4% -9.00% (p=0.000 n=18+18)
BM_CordPartialCopyToCord/4M/64k 291ns ± 4% 266ns ± 5% -8.53% (p=0.000 n=18+16)
BM_CordPartialCopyToCord/4M/128k 322ns ± 5% 291ns ± 4% -9.43% (p=0.000 n=20+18)
BM_CordPartialCopyToCord/8M/32k 281ns ± 5% 251ns ± 4% -10.38% (p=0.000 n=20+16)
BM_CordPartialCopyToCord/8M/64k 293ns ± 6% 267ns ± 4% -8.87% (p=0.000 n=16+19)
BM_CordPartialCopyToCord/8M/128k 334ns ± 3% 305ns ± 2% -8.56% (p=0.000 n=17+16)
This is clearly an alignmnet effect since number of the executed instructions is the same:
M_CordPartialCopyToCord/1M/1 155 ± 0% 155 ± 0% ~ (all samples are equal)
BM_CordPartialCopyToCord/1M/128 446 ± 0% 446 ± 0% ~ (p=0.332 n=36+39)
BM_CordPartialCopyToCord/1M/1k 473 ± 0% 473 ± 0% ~ (p=0.969 n=40+40)
BM_CordPartialCopyToCord/1M/8k 808 ± 0% 808 ± 0% ~ (p=0.127 n=40+39)
BM_CordPartialCopyToCord/1M/16k 957 ± 0% 957 ± 0% ~ (p=0.532 n=40+40)
BM_CordPartialCopyToCord/4M/16k 952 ± 0% 952 ± 0% ~ (p=0.686 n=39+39)
BM_CordPartialCopyToCord/4M/32k 1.12k ± 0% 1.12k ± 0% ~ (p=0.690 n=40+40)
BM_CordPartialCopyToCord/4M/64k 1.23k ± 0% 1.23k ± 0% ~ (p=0.182 n=40+39)
BM_CordPartialCopyToCord/4M/128k 1.44k ± 0% 1.44k ± 0% ~ (p=0.711 n=40+40)
BM_CordPartialCopyToCord/8M/32k 1.12k ± 0% 1.12k ± 0% ~ (p=0.697 n=40+40)
BM_CordPartialCopyToCord/8M/64k 1.23k ± 0% 1.23k ± 0% +0.00% (p=0.049 n=40+40)
BM_CordPartialCopyToCord/8M/128k 1.44k ± 0% 1.44k ± 0% ~ (p=0.507 n=40+40)
This makes code simpler and doesn't regress performance.
PiperOrigin-RevId: 415560574
--
37305b2690b31682088749e4d62f40d7095bdc54 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 415558737
--
86aaed569b9e743c1eb813a5f48def978a793db3 by Martijn Vels <mvels@google.com>:
Internal change
PiperOrigin-RevId: 415515201
--
6cdb8786cdcb4fa0b8a4b72fc98940877d1fdeff by Abseil Team <absl-team@google.com>:
Update SubmitMutexProfileData to accept wait_cycles instead of wait_timestamp
PiperOrigin-RevId: 415360871
--
9f979d307aa16ad09f214e04876cbe84395c0901 by Abseil Team <absl-team@google.com>:
absl::flat_hash_set compiles with -Wconversion -Wsign-compare
PiperOrigin-RevId: 415357498
--
9eceb14174708f15e61259d449b214a8a4c7f9e7 by Abseil Team <absl-team@google.com>:
Fix AddressIsReadable for the corner case of (aligned) addr == NULL.
PiperOrigin-RevId: 415307792
--
1a39ffe55898375e2d7f88c17c99db5a1b95b313 by Martijn Vels <mvels@google.com>:
Internal change
PiperOrigin-RevId: 415162872
--
64378549b110d5f5762185a5906c520fba70f0e7 by Abseil Team <absl-team@google.com>:
Fix a typo in the comments
PiperOrigin-RevId: 415088461
--
41aae8322e913b82710153c22b97c611fdb6e1fb by Abseil Team <absl-team@google.com>:
Switch from `connect` to `rt_sigreturn` -- the latter is much less problematic
for system call sandboxes.
PiperOrigin-RevId: 415073965
--
870c5e3388b6a35611bff538626fe7a1c8c87171 by Abseil Team <absl-team@google.com>:
Add ABSL_HAVE_HWADDRESS_SANITIZER and ABSL_HAVE_LEAK_SANITIZER
PiperOrigin-RevId: 414871189
--
f213ed60a66b58da7ac40555adfb1d529ff0a4db by Derek Mauro <dmauro@google.com>:
Remove reference to __SANITIZE_MEMORY__, which does not exist
It appears to have been copied by pattern matching from the ASAN/TSAN
code blocks.
f47662204d/gcc/cppbuiltin.c (L79-L126)
PiperOrigin-RevId: 414806587
--
b152891e73ab515f397ceb53f66c8ee2f33863ea by Abseil Team <absl-team@google.com>:
Rollback previous commit: SYS_open is not defined in certain environments.
PiperOrigin-RevId: 414521820
--
5a1cbb282331023902e1374dd0d920c4effbe47f by Abseil Team <absl-team@google.com>:
Use syscall(SYS_open, ...) instead of open() to avoid possible symbol
interposition.
Also add some warning notes.
PiperOrigin-RevId: 414508186
--
1824d6593612710aafdc599a89b0adced7d787f6 by Abseil Team <absl-team@google.com>:
Correct aarch64 macro check
The macro is __aarch64__, not __arch64__.
PiperOrigin-RevId: 414446225
--
a1536a57b64dfd53945d33a01cfc08b18c99c97b by Abseil Team <absl-team@google.com>:
Fix backwards comment in the last commit.
PiperOrigin-RevId: 414281214
--
11ac021ba779513667a31cf2563ddafc57d6d913 by Abseil Team <absl-team@google.com>:
AddressIsReadable() didn't work correctly on ARM when the given pointer was
misaligned at the end of the page.
Fix that by aligning the pointer on an 8-byte boundary before checking it.
PiperOrigin-RevId: 414203863
GitOrigin-RevId: 07240ca7822d007cdcc79f2c40bd58b2c2010348
Change-Id: If5f129194d59f5c9e5d84efd8cd9e17a70e072ab
--
355b8f7b0070b005d53d94ee4180e95559ba2c88 by Derek Mauro <dmauro@google.com>:
Documentation: don't define absl::Status::ok() in terms of itself
Fixes#1058
PiperOrigin-RevId: 410035651
--
31c512c834b3a8979297adc5006c3727a3c6554b by Evan Brown <ezb@google.com>:
Cleanup: move set_params/set_slot_policy into btree_set.h and move map_params into btree_map.h.
Also change some `sizeof(value_type)`s to `sizeof(slot_type)`s and update some comments/variable names referring to values to refer to slots as appropriate in btree.h.
Motivation: preliminary cleanup towards node_btree_*.
PiperOrigin-RevId: 409991342
--
3129ca320d61a82f1c9ee8c02a23d25024eea4ab by Abseil Team <absl-team@google.com>:
Use simpler implementation for AddressIsReadable.
In particular, current solution doesn't work on systems configured with large
pid_t space.
PiperOrigin-RevId: 409397716
--
f71067f7494b19ce4a2e1df730b934dc931c51b2 by Martijn Vels <mvels@google.com>:
Add Span dependency
PiperOrigin-RevId: 409198889
GitOrigin-RevId: 355b8f7b0070b005d53d94ee4180e95559ba2c88
Change-Id: I7f4df3ec7739fdfde61d8ba983f07a08f6f1c7d7
--
317c7bd0caa12fa0a4dc65dc9c8e645211f85872 by Abseil Team <absl-team@google.com>:
Elide the Emscripten JS-based stack trace and symbolization functions when
building in Standalone Mode.
Users will need to set `-DSTANDALONE_WASM=1` in some toolchain(s).
PiperOrigin-RevId: 408961649
--
92ba3ab1ef3edee4b7fb9e151f2061661e7beb0a by Derek Mauro <dmauro@google.com>:
Suppress MSVC warning "C4127: conditional expression is constant"
Fixes#1004
PiperOrigin-RevId: 408920356
GitOrigin-RevId: 317c7bd0caa12fa0a4dc65dc9c8e645211f85872
Change-Id: Ieca0a9e263874ba5bd93110dc437c56bc59ad5a7
Derek Mauro
Russell Johnston
Abseil Team
Saleem Abdulrasool
David Majnemer
Andy Getzendanner
Benjamin Barenblat
Andrei Polushin
Gennadiy Rozental
Fabrice Fontaine
Jeremy Nimmer
Calvin Ke
Thomas Klausner
Andrew Krasavin
imaiguo