1490. Mutex requirements too stringent

Section: 33.6.4 [thread.mutex.requirements] Status: Resolved Submitter: Switzerland Opened: 2010-08-25 Last modified: 2016-01-28 10:19:27 UTC

Priority: Not Prioritized

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Addresses CH-27

The mutex requirements force try_lock to be noexcept(true). However, where they are used by the generic algorithms, those relax this requirement and say that try_lock may throw. This means the requirement is too stringent, also a non-throwing try_lock does not allow for a diagnostic such as system_error that lock() will give us.

[ Resolution proposed by ballot comment: ]

delete p18, adjust 30.4.4 p1 and p4 accordingly

[ 2010-11-01 Daniel comments: ]

Accepting n3130 would solve this issue.

Proposed resolution:

Resolved by n3197.