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Object Introspection (OI) enables on-demand, hierarchical profiling of objects in arbitrary C/C++ programs with no recompilation.
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Jake Hillion 71e734b120 tbv2: calculate total memory footprint 
Add the option to calculate total size (inclusive size) by wrapping the
existing iterator. This change provides a new iterator, `SizedIterator`, which
wraps an existing iterator and adds a new field `size` to the output element.

This is achieved with a two pass algorithm on the existing iterator:
1. Gather metadata for each element. This includes the total size up until that
   element and the range of elements that should be included in the size.
2. Return the result from the underlying iterator with the additional
   field.

This algorithm is `O(N)` time on the number of elements in the iterator and
`O(N)` time, storing 16 bytes per element. This isn't super expensive but is a
lot more than the current algorithm which requires close to constant space.
Because of this I've implemented it as a wrapper on the iterator rather than on
by default, though it is now on in every one of our integration test cases.

Test plan:
- Added to the integration tests for full coverage.
2024-01-04 09:21:35 +00:00
.circleci circleci: clean up codegen v1 runs 2024-01-03 17:29:59 +00:00
.github Add website deployment script 2022-12-20 08:40:51 -08:00
cmake Enable compiler warnings globally 2023-05-23 10:36:42 +01:00
examples clang-format: set BinPackParameters=false 2023-04-24 11:28:22 +02:00
extern Update drgn to Omar's branch 2023-12-13 11:59:21 +00:00
include/oi tbv2: calculate total memory footprint 2024-01-04 09:21:35 +00:00
oi tbv2: calculate total memory footprint 2024-01-04 09:21:35 +00:00
resources Compile Time OIL for OIL v2 2023-08-30 04:28:02 -07:00
test tbv2: calculate total memory footprint 2024-01-04 09:21:35 +00:00
tools oilgen: migrate to source parsing (#421) 2023-12-19 13:26:25 -08:00
types tbv2: implement folly::IOBuf 2023-12-20 16:13:50 +00:00
website Use objectintrospection.org for the website 2023-09-21 20:59:46 +01:00
.clang-format clang-format: disable bin packing 2023-11-13 18:19:53 +00:00
.clang-tidy Initial commit 2022-12-19 06:37:51 -08:00
.editorconfig Initial commit 2022-12-19 06:37:51 -08:00
.git-blame-ignore-revs Initial commit 2022-12-19 06:37:51 -08:00
.gitignore Delete old files from test/ 2023-01-27 12:45:35 +00:00
.gitmodules drgn: add split dwarf support 2023-06-02 17:52:53 +02:00
CHANGELOG.md Initial commit 2022-12-19 06:37:51 -08:00
CMakeLists.txt oilgen: migrate to source parsing (#421) 2023-12-19 13:26:25 -08:00
CODE_OF_CONDUCT.md Initial commit 2022-12-19 06:37:51 -08:00
CONTRIBUTING.md Initial commit 2022-12-19 06:37:51 -08:00
dev.oid.toml Implement new container for F14ValueMap 2023-09-08 16:31:36 +02:00
flake.lock ci: move formatting checks to nix 2023-12-14 15:31:07 +00:00
flake.nix ci: move formatting checks to nix 2023-12-14 15:31:07 +00:00
LICENSE Initial commit 2022-12-19 06:37:51 -08:00
oss.oid.toml Initial commit 2022-12-19 06:37:51 -08:00
README.md Use objectintrospection.org for the website 2023-09-21 20:59:46 +01:00

README.md

object-introspection

Matrix Chat

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Object Introspection is a memory profiling technology for C++ objects. It provides the ability to dynamically instrument applications to capture the precise memory occupancy of entire object hierarchies including all containers and dynamic allocations. All this with no code modification or recompilation!

For more information on the technology and how to get started applying it to your applications please check out the Object Introspection website.

Join the Object Introspection community

See the CONTRIBUTING file for how to help out.

License

Object Introspection is licensed under the Apache 2.0 License.