Translation unit
A translation unit is source code produced by preprocessing one source file together with its included contents for compilation.
Modern C
A translation unit is the source code produced after preprocessing one C source file together with its included material and presented to the compiler.
- How it is used
- Uses translation-unit boundaries to explain when compilers can inline functions and optimize across a call.
- How deep it goes
- Explains compiler visibility and optimization consequences, without detailing preprocessing phases or linkage rules.
- Examples
- Uses an inline definition in a header and a matching declaration instantiated in exactly one translation unit.
- What you can do after
- Understand how source inclusion and definition visibility determine the compiler's translation-unit view.
Modern C, Third Edition
A translation unit is the source-code unit produced after preprocessing a C source file and its included contents for compilation.
- How it is used
- Uses translation-unit visibility to explain modular organization and compiler inlining opportunities.
- How deep it goes
- Defines the boundary and explains its optimization consequence, but stops short of detailing preprocessing mechanics or linkage rules.
- Examples
- Uses caller-callee inlining and header-based inline-definition listings, including instantiation in exactly one translation unit.
- What you can do after
- Evaluate when definition visibility can enable inlining and distinguish declarations from definitions across translation units.
Read how Modern C, Third Edition explains translation unit →
Related concepts
- call graphproduces · A call graph is a directed graph representing possible or observed relationships in which functions, procedures, or methods in a program call one another.
- applicationpart of · An application is a software program or system that performs tasks or provides functionality for users or other software systems.
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