feat(core): add resource-limited execution to graph nodes - #850
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📝 WalkthroughWalkthroughThe PR adds a typed resource catalog and resource-limited TBB nodes. Graph registration forwards resources through proxies and glue. Fold, observer, predicate, transform, and unfold operations pass resource tokens to algorithms. CMake validates TBB support, and tests cover registration, limiting, and token delivery. ChangesResource-limited graph execution
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🟡 Moderate · up to The PR adds resource-limited node execution, but resource-only registrations can fail to compile and duplicate resource declarations can reach an invalid runtime limiter state; the tests also do not reliably verify token delivery or serialization. Merge should wait for these concrete correctness and validation issues to be fixed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant Client
participant framework_graph
participant graph_proxy
participant registration_api
participant node_builder
participant resource_catalog
participant TBBNode
Client->>framework_graph: add_resource<Resource>()
framework_graph->>graph_proxy: create graph proxy with catalog
graph_proxy->>registration_api: register operation with resources
registration_api->>node_builder: build resource-aware node
node_builder->>resource_catalog: limiter_for<Resource>()
resource_catalog-->>node_builder: resource limiter
node_builder->>TBBNode: create node
TBBNode->>resource_catalog: acquire resource token
TBBNode->>Client: invoke algorithm with token
Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 1.22% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 82 functions across 17 files. (5 skipped: 5 unsupported.) ✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 5
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Inline comments:
In `@phlex/core/declared_observer.hpp`:
- Around line 52-57: Reject zero-input resource-only registrations by adding a
clear static_assert that num_products is at least 1 beside its definition in the
node declarations in phlex/core/declared_observer.hpp (52-57),
phlex/core/declared_predicate.hpp (57-59), and phlex/core/declared_transform.hpp
(65-68); no direct changes are needed elsewhere.
In `@phlex/core/resource_api.hpp`:
- Around line 133-145: Update resource_split’s compile-time validation around
resource_types to reject duplicate resource types, using the existing Boost.MP11
type utilities or an equivalent uniqueness predicate. Ensure the validation
fails for repeated resource<T> entries while preserving valid distinct-resource
configurations and the existing resources_are_last behavior.
In `@test/fold_test.cpp`:
- Around line 156-163: Update test/fold_test.cpp lines 156-163 in
add_with_resource to initialize both fold resource objects with identifiable
state, read both fold_resource_1 and fold_resource_2 values in the callback, and
make the fold assertion depend on those values. Update
test/transform_node_test.cpp lines 42-48 in increment_with_resource to
initialize transform_resource state, read it in the callback, and make the
expected output depend on that state.
In `@test/resources_test.cpp`:
- Line 12: Rename the Catch2 resource type struct and every reference to it to a
lower_case identifier such as catch2_resource, preserving its existing behavior.
- Around line 24-29: Add a short detail::sleep_for interval inside the
verify_number lambda, after constructing thread_counter and before it goes out
of scope, so the concurrency guard remains active while the observer executes
and serialization is meaningfully tested.
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Fix all unresolved CodeRabbit comments on this PR:
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ℹ️ Review info
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Configuration used: Organization UI
Review profile: ASSERTIVE
Plan: Pro Plus
Run ID: 6af0b9cb-c1bb-416f-8a77-e07d10360086
📒 Files selected for processing (22)
CMakeLists.txtModules/private/PhlexTBB.cmakephlex/core/CMakeLists.txtphlex/core/declared_fold.hppphlex/core/declared_observer.hppphlex/core/declared_predicate.hppphlex/core/declared_transform.hppphlex/core/declared_unfold.hppphlex/core/framework_graph.hppphlex/core/glue.hppphlex/core/graph_proxy.hppphlex/core/node_builder.hppphlex/core/registration_api.hppphlex/core/resource_api.hppphlex/metaprogramming/delegate.hppphlex/source.hpptest/CMakeLists.txttest/fold_test.cpptest/resources_test.cpptest/tbb-preview/CMakeLists.txttest/transform_node_test.cpptest/unfold_test.cpp
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🧰 Additional context used
📓 Path-based instructions (5)
Use clang-format tool for all C++ code formatting (VS Code auto-formats on save); configuration defined in `.clang-format` with 100-character line limit and 2-space indentation
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
Files:
phlex/metaprogramming/delegate.hpptest/resources_test.cppphlex/source.hpptest/transform_node_test.cppphlex/core/framework_graph.hpptest/unfold_test.cppphlex/core/glue.hppphlex/core/declared_fold.hppphlex/core/declared_predicate.hppphlex/core/declared_transform.hpptest/fold_test.cppphlex/core/declared_unfold.hppphlex/core/node_builder.hppphlex/core/graph_proxy.hppphlex/core/resource_api.hppphlex/core/registration_api.hppphlex/core/declared_observer.hpp
Use `.hpp` for header files, `.cpp` for implementation, and `*_test.cpp` for test files in C++
📄 CodeRabbit inference engine (AGENTS.md)
Files:
phlex/metaprogramming/delegate.hpptest/resources_test.cppphlex/source.hpptest/transform_node_test.cppphlex/core/framework_graph.hpptest/unfold_test.cppphlex/core/glue.hppphlex/core/declared_fold.hppphlex/core/declared_predicate.hppphlex/core/declared_transform.hpptest/fold_test.cppphlex/core/declared_unfold.hppphlex/core/node_builder.hppphlex/core/graph_proxy.hppphlex/core/resource_api.hppphlex/core/registration_api.hppphlex/core/declared_observer.hpp
Use cmake-format tool for CMake files (VS Code auto-formats on save); configuration uses `dangle_align: 'child'` and `dangle_parens: true`
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
Files:
Modules/private/PhlexTBB.cmake
Avoid boolean parameters in C++ interfaces; prefer enumerations instead
📄 CodeRabbit inference engine (AGENTS.md)
Files:
phlex/metaprogramming/delegate.hppphlex/source.hppphlex/core/framework_graph.hppphlex/core/glue.hppphlex/core/declared_fold.hppphlex/core/declared_predicate.hppphlex/core/declared_transform.hppphlex/core/declared_unfold.hppphlex/core/node_builder.hppphlex/core/graph_proxy.hppphlex/core/resource_api.hppphlex/core/registration_api.hppphlex/core/declared_observer.hpp
All text files must end with exactly one newline character, with no trailing blank lines or trailing whitespace on any line
📄 CodeRabbit inference engine (.github/copilot-instructions.md)
Files:
CMakeLists.txt
🔇 Additional comments (16)
test/CMakeLists.txt (1)
268-270: LGTM!test/fold_test.cpp (1)
27-62: LGTM!test/tbb-preview/CMakeLists.txt (1)
1-11: LGTM!test/transform_node_test.cpp (1)
89-92: LGTM!Also applies to: 126-135
test/unfold_test.cpp (1)
18-21: LGTM!Also applies to: 30-33, 106-128, 271-299
phlex/core/declared_fold.hpp (1)
77-94: LGTM!Also applies to: 105-106, 119-132, 153-172
phlex/core/declared_observer.hpp (1)
68-119: LGTM!phlex/core/declared_predicate.hpp (1)
75-135: LGTM!phlex/core/declared_transform.hpp (1)
85-104: LGTM!Also applies to: 114-145, 160-163
phlex/core/declared_unfold.hpp (2)
106-107: LGTM!Also applies to: 116-138, 175-176, 191-199
91-95: 🗄️ Data Integrity & IntegrationNo port accessor change is required
resource_limited_nodeexposes tuple output ports, and oneTBB supportstbb::flow::output_port<N>(node)for this node type. The direct calls onunfold_are valid.phlex/core/registration_api.hpp (1)
33-49: LGTM!Also applies to: 70-140, 150-150, 160-164, 179-187, 228-228, 250-261, 265-313, 325-325, 333-335, 353-363, 367-419, 432-432
phlex/core/framework_graph.hpp (1)
11-11: LGTM!Also applies to: 35-35, 76-84, 152-158, 198-198, 213-218
phlex/core/glue.hpp (1)
10-10: LGTM!Also applies to: 52-59, 80-80, 93-100, 111-118, 129-136, 147-154, 174-174, 204-204
phlex/core/graph_proxy.hpp (1)
42-43: LGTM!Also applies to: 114-115, 128-138, 198-198, 223-253
phlex/source.hpp (1)
20-20: LGTM!Also applies to: 35-35, 62-62
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Codecov Report✅ All modified and coverable lines are covered by tests. @@ Coverage Diff @@
## main #850 +/- ##
==========================================
+ Coverage 84.90% 85.27% +0.37%
==========================================
Files 174 176 +2
Lines 7447 7641 +194
Branches 887 889 +2
==========================================
+ Hits 6323 6516 +193
Misses 889 889
- Partials 235 236 +1
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Build system
TBB_PREVIEW_FLOW_GRAPH_RESOURCE_LIMITINGfor core targets.node_builder.hppandresource_api.hppheaders.Core API
resource_catalog, resource registration, limiter lookup, and resource type traits.framework_graph::add_resource.resource_catalogthrough graph proxies, glue, and registration APIs.Node execution
detail::node_builderfor standard and resource-limited TBB nodes.Tests