llvm-project.git/compiler-rt/lib/gwp_asan/tests/thread_contention.cpp, branch users/mingmingl-llvm/samplefdo-profile-format Unnamed repository; edit this file 'description' to name the repository. [gwp_asan] Use anonymous namespace for test helper code (#157205) 2025-09-08T18:30:23+00:00 Roland McGrath mcgrathr@google.com 2025-09-08T18:30:23+00:00 1f39435567b35a6797d92cd9a24e503e6b0302fd Tests can be at top-level or inside an anonymous namespace, doesn't matter. But putting their helper code inside anonymous namespaces both makes the code compatible with compiling using -Wmissing-declarations and might let the compiler optimize the test good a bit better. 
Tests can be at top-level or inside an anonymous namespace,
doesn't matter.  But putting their helper code inside anonymous
namespaces both makes the code compatible with compiling using
-Wmissing-declarations and might let the compiler optimize the
test good a bit better.
 [GWP-ASan] Remove thread clamping in tests. 2023-02-02T23:40:07+00:00 Mitch Phillips 31459023+hctim@users.noreply.github.com 2023-02-02T23:37:33+00:00 10939d1d580b9d3c9c2f3539c6bdb39f408179c0 It's better and easier for us to just have threads contend against each other in the tests if it's more than the maximum supported number of hardware threads available. Specifically, the recoverable test fails on Android because the GTEST_SKIP in a called function, and it only properly works from the TEST_* harness function. Android tests run on cuttlefish, which can be a single core with two hyperthreads. Reviewed By: fmayer Differential Revision: https://reviews.llvm.org/D143221 
It's better and easier for us to just have threads contend against each
other in the tests if it's more than the maximum supported number of
hardware threads available.

Specifically, the recoverable test fails on Android because the
GTEST_SKIP in a called function, and it only properly works from the
TEST_* harness function. Android tests run on cuttlefish, which can be a
single core with two hyperthreads.

Reviewed By: fmayer

Differential Revision: https://reviews.llvm.org/D143221
[GWP-ASan] Crash Handler API. 2020-02-05T23:39:17+00:00 Mitch Phillips 31459023+hctim@users.noreply.github.com 2020-02-05T23:39:03+00:00 a62586846fa90054bd9224912b07095d2fca662c Summary: Forewarning: This patch looks big in #LOC changed. I promise it's not that bad, it just moves a lot of content from one file to another. I've gone ahead and left inline comments on Phabricator for sections where this has happened. This patch: 1. Introduces the crash handler API (crash_handler_api.h). 2. Moves information required for out-of-process crash handling into an AllocatorState. This is a trivially-copied POD struct that designed to be recovered from a deceased process, and used by the crash handler to create a GWP-ASan report (along with the other trivially-copied Metadata struct). 3. Implements the crash handler API using the AllocatorState and Metadata. 4. Adds tests for the crash handler. 5. Reimplements the (now optionally linked by the supporting allocator) in-process crash handler (i.e. the segv handler) using the new crash handler API. 6. Minor updates Scudo & Scudo Standalone to fix compatibility. 7. Changed capitalisation of errors (e.g. /s/Use after free/Use After Free). Reviewers: cryptoad, eugenis, jfb Reviewed By: eugenis Subscribers: merge_guards_bot, pcc, jfb, dexonsmith, mgorny, cryptoad, #sanitizers, llvm-commits Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D73557 
Summary:
Forewarning: This patch looks big in #LOC changed. I promise it's not that bad, it just moves a lot of content from one file to another. I've gone ahead and left inline comments on Phabricator for sections where this has happened.

This patch:
 1. Introduces the crash handler API (crash_handler_api.h).
 2. Moves information required for out-of-process crash handling into an AllocatorState. This is a trivially-copied POD struct that designed to be recovered from a deceased process, and used by the crash handler to create a GWP-ASan report (along with the other trivially-copied Metadata struct).
 3. Implements the crash handler API using the AllocatorState and Metadata.
 4. Adds tests for the crash handler.
 5. Reimplements the (now optionally linked by the supporting allocator) in-process crash handler (i.e. the segv handler) using the new crash handler API.
 6. Minor updates Scudo & Scudo Standalone to fix compatibility.
 7. Changed capitalisation of errors (e.g. /s/Use after free/Use After Free).

Reviewers: cryptoad, eugenis, jfb

Reviewed By: eugenis

Subscribers: merge_guards_bot, pcc, jfb, dexonsmith, mgorny, cryptoad, #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D73557
Remove a few straggler ".cc"s in compiler-rt/lib 2019-08-01T17:53:25+00:00 Nico Weber nicolasweber@gmx.de 2019-08-01T17:53:25+00:00 4a1a113a99082914734b78e434a2ffea78a57dc4 llvm-svn: 367589 
llvm-svn: 367589
[GWP-ASan] Core Guarded Pool Allocator [4]. 2019-06-05T19:42:48+00:00 Mitch Phillips mitchphillips@outlook.com 2019-06-05T19:42:48+00:00 a95edb9dc1ddaf70761e8c90be175f144a28f757 Summary: See D60593 for further information. This patch introduces the core of GWP-ASan, being the guarded pool allocator. This class contains the logic for creating and maintaining allocations in the guarded pool. Its public interface is to be utilised by supporting allocators in order to provide sampled guarded allocation behaviour. This patch also contains basic functionality tests of the allocator as unittests. The error-catching behaviour will be tested in upcoming patches that use Scudo as an implementing allocator. Reviewers: vlad.tsyrklevich, eugenis, jfb Reviewed By: vlad.tsyrklevich Subscribers: dexonsmith, kubamracek, mgorny, cryptoad, jfb, #sanitizers, llvm-commits, morehouse Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D62872 llvm-svn: 362636 
Summary:
See D60593 for further information.

This patch introduces the core of GWP-ASan, being the guarded pool allocator. This class contains the logic for creating and maintaining allocations in the guarded pool. Its public interface is to be utilised by supporting allocators in order to provide sampled guarded allocation behaviour.

This patch also contains basic functionality tests of the allocator as unittests. The error-catching behaviour will be tested in upcoming patches that use Scudo as an implementing allocator.

Reviewers: vlad.tsyrklevich, eugenis, jfb

Reviewed By: vlad.tsyrklevich

Subscribers: dexonsmith, kubamracek, mgorny, cryptoad, jfb, #sanitizers, llvm-commits, morehouse

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D62872

llvm-svn: 362636