C++ attribute: optimize_for_synchronized (TM TS)

 

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optimize_for_synchronized (TM TS)

unlikely (C++20)

 

Indicates that the function definition should be optimized for invocation from a synchronized statement.

Syntax

[[optimize_for_synchronized]]

Explanation

Applies to the name being declared in a function declaration, which must be the first declaration of the function.

Indicates that the function definition should be optimized for invocation from a synchronized statement. In particular, it avoids serializing synchronized blocks that make a call to a function that is transaction-safe for the majority of calls, but not for all calls.

References

• Transactional Memory TS (ISO/IEC TS 19841:2015):

• 7.6.6 Attribute for optimization in synchronized blocks [dcl.attr.sync]