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Re: [RFC] kern: simple futex for gnumach
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From: |
Roland McGrath |
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Subject: |
Re: [RFC] kern: simple futex for gnumach |
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Date: |
Tue, 1 Oct 2013 15:32:27 -0700 (PDT) |
A fundamental feature of futexes is that they are tied to the memory, not
the mapping. If there are two mappings of the same shared page, a
futex_wake on an offset N into the page from one mapping must wake a
futex_wait on an offset N into the page from the other mapping.
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