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implement thread_local! #30

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japaric opened this issue Jan 14, 2017 · 3 comments
Open

implement thread_local! #30

japaric opened this issue Jan 14, 2017 · 3 comments

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@japaric
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japaric commented Jan 14, 2017

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This was referenced Jan 14, 2017
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@tbu- tbu- mentioned this issue Feb 2, 2017
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@japaric japaric mentioned this issue Feb 3, 2017
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@FenrirWolf
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FenrirWolf commented Feb 23, 2017 •
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Would using the thread_local implementations from libstd/sys/redox be sufficient? As far as I can tell it's pure rust code with no system dependencies.

@tbu-
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tbu- commented Feb 23, 2017

This seems to rely entirely on the #[thread_local] attribute. What does it do? :)

@FenrirWolf
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FenrirWolf commented Feb 23, 2017 •
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It hooks into ELF thread_local storage, which can be toggled with "has-elf-tls": "true" in target specification files (see https://github.com/rust-lang/rust/blob/master/src/librustc_back/target/mod.rs#L376-L378L)

However, I'm not entirely sure what determines if a platform supports ELF TLS. I think it's actually set up during link-time when enabled.

@FenrirWolf FenrirWolf mentioned this issue Feb 24, 2017
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@japaric japaric mentioned this issue Feb 25, 2017
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@japaric @tbu- @FenrirWolf