Headers and Modules

[headers_and_modules]

API Headers

oneTBB interfaces are defined in headers located in <install-prefix>/include/oneapi/tbb directory. Specific headers for each interface are listed in the corresponding API description.

Compatibility Headers

<install-prefix>/include/tbb directory provides the same set of headers as <install-prefix>/include/oneapi/tbb for compatibility with old TBB releases. For any header X.h, including <oneapi/tbb/X.h> is equivalent to including <tbb/X.h>.

Umbrella Headers

The <oneapi/tbb.h> and <tbb/tbb.h> headers are umbrella headers that include all oneTBB API headers. Use them for convenience when fine-grained header inclusion is not required.

TBB Module (experimental)

Caution

TBB C++20 module is experimental and subject to change in future releases.

oneTBB provides a C++20 module interface unit, tbb.cppm, that lets you use oneTBB via import tbb; instead of regular library headers.

The module is installed as a source file under <install-prefix>/include/oneapi/tbb.cppm and must be compiled as part of your own build target.

Translation units that use import tbb; are ABI-compatible with those that use library headers.

For C++20 module integration details, see C++20 Modules Support.