header split, cleanup and new tests #2
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Sequence Diagram(s) (Beta)sequenceDiagram
participant User
participant Library
participant MemoryResource
User->>Library: Create object/array
Library->>MemoryResource: Allocate memory
MemoryResource-->>Library: Memory allocated
Library-->>User: Object/array created
User->>Library: Reset memory
Library->>MemoryResource: Deallocate memory
MemoryResource-->>Library: Memory deallocated
Library-->>User: Memory reset
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Actionable comments posted: 0
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (7)
- README.md (2 hunks)
- include/decodeless/allocator.hpp (2 hunks)
- include/decodeless/allocator_concepts.hpp (1 hunks)
- include/decodeless/allocator_construction.hpp (1 hunks)
- include/decodeless/pmr_allocator.hpp (1 hunks)
- test/CMakeLists.txt (1 hunks)
- test/src/allocator.cpp (4 hunks)
Files skipped from review due to trivial changes (1)
- test/CMakeLists.txt
Additional context used
LanguageTool
README.md
[style] ~7-~7: Although a hyphen is possible, it is not necessary in a compound modifier in which the first word is an adverb that ends in ‘ly’.
Context: ... combined.decodeless_allocatoris a possibly-growable local linear arena allocator. - growabl...
[grammar] ~8-~8: It appears that the past participle should be used here.
Context: ...e backing allocation may grow if it has reallocate() and the call returns the same addre...
[uncategorized] ~21-~21: Possible missing comma found.
Context: ...use that's slow. If I read it back into memory I must take care of alignment. Allocato...
[style] ~24-~24: Consider an alternative for the overused word “exactly”.
Context: ...ctly from a memory mapped file. That is exactly what [decodeless_writer](https://gith...
Markdownlint
README.md
8-8: null
Lists should be surrounded by blank lines
48-48: null
Fenced code blocks should have a language specified
66-66: null
Fenced code blocks should have a language specified
79-79: null
Fenced code blocks should have a language specified
Additional comments not posted (23)
include/decodeless/pmr_allocator.hpp (2)
10-30: Implementation ofmemory_resource_adapterlooks correct and adheres to the expected behavior of astd::pmr::memory_resource.
32-51: Implementation ofpmr_linear_memory_resourcecorrectly encapsulates functionality and provides a clear interface for managing linear memory resources.include/decodeless/allocator_concepts.hpp (7)
10-20: Thememory_resourceconcept is well-defined, ensuring that any type fulfilling this concept has the necessary allocation and deallocation methods.
22-29: Therealloc_memory_resourceconcept correctly extendsmemory_resourceto include reallocation capabilities, which is crucial for certain memory management strategies.
31-42: Theallocatorconcept is appropriately defined to ensure that allocators manage memory for specific types, adhering to the expected interface of C++ allocators.
44-52: Therealloc_allocatorconcept effectively extends theallocatorconcept to include reallocation, which is essential for dynamic memory management scenarios.
54-61: The combined conceptsmemory_resource_or_allocatorandrealloc_resource_or_allocatorare well-thought-out, allowing for flexibility in function templates that can operate with either memory resources or allocators.
63-66: Thehas_max_sizeconcept is crucial for ensuring that types used in memory management can report their maximum allowable allocation size, aiding in robust memory usage control.
68-70: Thetrivially_destructibleconcept is correctly defined using standard traits, ensuring that it can be used reliably in contexts where destructors are not invoked.README.md (5)
Line range hint
1-41: The introduction and description ofdecodeless_allocatorare well-written, clearly explaining the library's features and rationale.Tools
Markdownlint
48-48: null
Fenced code blocks should have a language specified
66-66: null
Fenced code blocks should have a language specified
46-72: The example usage section effectively demonstrates the practical applications of thedecodeless_allocatorlibrary, providing clear and relevant examples.Tools
Markdownlint
48-48: null
Fenced code blocks should have a language specified
66-66: null
Fenced code blocks should have a language specified
Line range hint
74-96: The CMake integration instructions are clear and provide a straightforward method for users to incorporatedecodeless_allocatorinto their projects.
98-108: The explanations of memory resources and allocators are informative, enhancing understanding of their roles and uses within thedecodeless_allocatorlibrary.
110-110: The contributing section is welcoming and provides clear information on how users can contribute to the project, along with necessary legal mentions.include/decodeless/allocator_construction.hpp (2)
16-66: The utility functions in thefrom_resourcenamespace are correctly implemented, usingstd::construct_atfor proper in-place construction and ensuring that they are used withtrivially_destructibletypes.
69-119: The utility functions in thefrom_allocatornamespace are well-implemented, effectively using allocator rebinding to manage different types and providing robust construction capabilities.include/decodeless/allocator.hpp (1)
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13-146: Thelinear_memory_resourceclass is well-implemented, providing robust and flexible memory management capabilities. It correctly handles alignment and overflow, and uses concepts to enforce type safety and flexibility.test/src/allocator.cpp (6)
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8-48: The test caseAllocate, Objectcorrectly verifies the basic allocation functionality oflinear_memory_resource, using aNullAllocatorto simulate allocation failures and checking for correct sizes and alignment.
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50-66: The test caseAllocate, Arrayeffectively verifies the allocation of arrays, ensuring that padding and alignment are correctly handled and that the total allocated size matches expectations.
68-94: The test caseAllocate, Initializethoroughly tests the initialization of allocated memory and the functionality of theresetmethod, ensuring that memory is correctly initialized and can be reset as expected.
96-106: The test caseAllocate, VectorRelaxedis appropriately designed to account for environment-specific behaviors, such as extra allocations in MSVC debug mode, providing a practical and realistic test scenario.
Line range hint
108-136: The test caseAllocate, Vectoris well-constructed, effectively testing the behavior ofstd::vectorwith a linear allocator under capacity constraints and ensuring that exceptions are thrown as expected when limits are exceeded.
138-148: The test caseAllocate, PmrAllocatorcorrectly tests thepmr_linear_memory_resourcewith a polymorphic allocator, verifying that allocations are correctly accounted for and that the resource behaves as expected.
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Actionable comments posted: 1
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (6)
- README.md (2 hunks)
- include/decodeless/allocator.hpp (8 hunks)
- include/decodeless/allocator_concepts.hpp (1 hunks)
- include/decodeless/allocator_construction.hpp (1 hunks)
- include/decodeless/pmr_allocator.hpp (1 hunks)
- test/src/allocator.cpp (8 hunks)
Files skipped from review as they are similar to previous changes (4)
- include/decodeless/allocator_concepts.hpp
- include/decodeless/allocator_construction.hpp
- include/decodeless/pmr_allocator.hpp
- test/src/allocator.cpp
Additional context used
LanguageTool
README.md
[style] ~7-~7: Although a hyphen is possible, it is not necessary in a compound modifier in which the first word is an adverb that ends in ‘ly’.
Context: ... combined.decodeless_allocatoris a possibly-growable local linear arena allocator. - growabl...
[grammar] ~8-~8: It appears that the past participle should be used here.
Context: ...e backing allocation may grow if it has reallocate() and the call returns the same addre...
[uncategorized] ~21-~21: Possible missing comma found.
Context: ...e care of alignment. Allocators do that already and a linear allocator would tightly pa...
[style] ~24-~24: Consider an alternative for the overused word “exactly”.
Context: ...ctly from a memory mapped file. That is exactly what [decodeless_writer](https://gith...
Markdownlint
README.md
8-8: null
Lists should be surrounded by blank lines
48-48: null
Fenced code blocks should have a language specified
66-66: null
Fenced code blocks should have a language specified
79-79: null
Fenced code blocks should have a language specified
Additional comments not posted (9)
README.md (3)
61-61: Check alignment calculation for double data type.Verification successful
The alignment calculation for the double data type is correctly handled in the code. The test in
test/src/allocator.cppverifies that the double type, which typically requires an alignment of 8, starts at the next multiple of 8 after the last int. This confirms that the alignment logic is correctly implemented.
test/src/allocator.cpp:
- The test
TEST(Allocate, Alignment)includes a check for double alignment:EXPECT_EQ(memory.allocate(sizeof(double), alignof(double)), reinterpret_cast<void*>(8)); EXPECT_EQ(memory.size(), 8 + sizeof(double));This confirms that the alignment calculation for the double data type is correctly handled.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify alignment calculation for double data type in examples. # Test: Search for alignment calculations in examples. Expect: Correct alignment for double data type. rg --type markdown $'alignedDouble'Length of output: 153
Script:
#!/bin/bash # Description: Search for alignment calculation logic in the codebase. # Test: Search for alignment calculation logic. Expect: Find code handling alignment for double data type. rg 'alignment' --type cppLength of output: 1084
Script:
#!/bin/bash # Description: Extract and review alignment calculation logic in relevant files. # Extract alignment logic from test/src/allocator.cpp rg 'alignment' test/src/allocator.cpp -A 10 -B 10 # Extract alignment logic from include/decodeless/allocator_concepts.hpp rg 'alignment' include/decodeless/allocator_concepts.hpp -A 10 -B 10Length of output: 3996
57-57: Ensure memory size calculation is correct for different data types.
71-71: Validate memory size after array allocation.include/decodeless/allocator.hpp (6)
44-44: Confirm necessity of reallocate() and max_size() calls for growth capability.Verification successful
The
reallocate()andmax_size()functions are indeed necessary for enabling growth capability inallocator.hpp. The code and comments within the file indicate that these functions are used to handle reallocation and to check for size constraints, which are critical for managing dynamic memory growth.
reallocate()is used in functions likereallocate_bytesand is mentioned in comments related to growth.max_size()is used to check for potential overflow and to determine the new size for reallocation.These functions are essential for the allocator's ability to grow dynamically.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify necessity of reallocate() and max_size() calls for growth capability in allocator.hpp. # Test: Search for usage of reallocate() and max_size() calls in allocator.hpp. Expect: Necessary for growth capability. rg --type cpp $'reallocate|max_size'Length of output: 2055
125-137: Check reset and truncate methods for correct memory management.Verification successful
The
resetandtruncatemethods inallocator.hppappear to manage memory correctly based on the following observations:
- The
resetmethod setsm_nextto the beginning of the memory block, which is correctly initialized.- The
truncatemethod reallocates memory and checks if the address has changed, throwing an exception if it has, ensuring memory integrity.- The
reallocate_bytesfunction andm_parentallocator are used appropriately, withm_parentbeing a valid allocator.No issues were found with the memory management in these methods.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify reset and truncate methods for correct memory management in allocator.hpp. # Test: Search for reset and truncate methods in allocator.hpp. Expect: Correct memory management. rg --type cpp $'reset|truncate'Length of output: 536
Script:
#!/bin/bash # Description: Verify initialization of m_begin and usage of m_next in allocator.hpp. # Find where m_begin is initialized. rg --type cpp 'm_begin' include/decodeless/allocator.hpp # Find where m_next is used. rg --type cpp 'm_next' include/decodeless/allocator.hppLength of output: 1684
Script:
#!/bin/bash # Description: Verify implementation of reallocate_bytes and usage of m_parent in allocator.hpp. # Find the implementation of reallocate_bytes. rg --type cpp 'reallocate_bytes' include/decodeless/ # Find where m_parent is used. rg --type cpp 'm_parent' include/decodeless/allocator.hppLength of output: 1045
14-14: Check if the allocation and reallocation utilities handle all types correctly.Also applies to: 23-23
Verification successful
The definitions of
memory_resource_or_allocatorandrealloc_resource_or_allocatorconcepts inallocator_concepts.hppensure that theallocate_bytesandreallocate_bytesfunctions handle all types of allocators correctly. These concepts check if the provided type is either amemory_resourceor anallocator, and similarly for reallocation.
memory_resource_or_allocatorensures the type is either amemory_resourceor anallocator.realloc_resource_or_allocatorensures the type is either arealloc_memory_resourceor arealloc_allocator.These checks confirm that the allocation and reallocation utilities handle all types correctly.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify allocation and reallocation utilities handle all types correctly in allocator.hpp. # Test: Search for usage of allocation and reallocation utilities in allocator.hpp. Expect: Correct handling of all types. rg --type cpp $'allocate_bytes|reallocate_bytes'Length of output: 683
Script:
#!/bin/bash # Description: Find and inspect the definitions of allocate_bytes and reallocate_bytes in allocator.hpp. # Search for the definitions of allocate_bytes and reallocate_bytes in allocator.hpp rg --type cpp --context 10 'std::byte\* allocate_bytes|std::byte\* reallocate_bytes'Length of output: 2291
Script:
#!/bin/bash # Description: Verify that memory_resource_or_allocator and realloc_resource_or_allocator correctly identify all types of allocators. # Search for the definitions of memory_resource_or_allocator and realloc_resource_or_allocator rg --type cpp --context 10 'memory_resource_or_allocator|realloc_resource_or_allocator'Length of output: 11112
71-71: Ensure proper deallocation in destructor to prevent memory leaks.
Line range hint
155-186: Review compatibility and correctness of memory_resource_ref template class.
83-98: Validate reallocation logic and address handling to ensure stability.
include/decodeless/allocator.hpp
Outdated
| #include <decodeless/allocator_concepts.hpp> | ||
| #include <decodeless/allocator_construction.hpp> |
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Tip
Codebase Verification
The new includes in allocator.hpp are not used within the file.
- Remove unnecessary includes from
allocator.hpp.
Analysis chain
Ensure new includes are necessary and correctly placed.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify the necessity and correctness of new includes in allocator.hpp.
# Test: Search for usage of new includes in allocator.hpp. Expect: Correct usage of new includes.
rg --type cpp $'allocator_concepts.hpp|allocator_construction.hpp'
Length of output: 227
Script:
#!/bin/bash
# Description: Verify the usage of functionalities from allocator_concepts.hpp and allocator_construction.hpp in allocator.hpp.
# Test: Search for usage of functionalities from allocator_concepts.hpp in allocator.hpp.
rg --type cpp --word-boundary 'allocator_concepts' include/decodeless/allocator.hpp
# Test: Search for usage of functionalities from allocator_construction.hpp in allocator.hpp.
rg --type cpp --word-boundary 'allocator_construction' include/decodeless/allocator.hpp
Length of output: 1065
Script:
#!/bin/bash
# Description: Verify the usage of functionalities from allocator_concepts.hpp and allocator_construction.hpp in allocator.hpp.
# Test: Search for usage of functionalities from allocator_concepts.hpp in allocator.hpp.
rg --type cpp --word-regexp 'allocator_concepts' include/decodeless/allocator.hpp
# Test: Search for usage of functionalities from allocator_construction.hpp in allocator.hpp.
rg --type cpp --word-regexp 'allocator_construction' include/decodeless/allocator.hpp
Length of output: 261
Fixes a bug where the arena's m_end was not updated after reallocating
disclaimer: tests written with gpt-4
Summary by CodeRabbit
Documentation
New Features
Refactor
Tests