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25b9b06d1c
this reduces the chances of hitting the 32-bit address space issue on x86_64 instead of (always) using a static ANCHOR variable located in .bss we lazily initialize the ANCHOR variable using the value passed to the first `Ptr::new` invocation. In practice, this means the very first `Pool::grow` (on x86_64) call is guaranteed to work (use the given memory). Follow up `grow` invocations are *more likely* to work (but not guaranteed) *if* all given memory comes from the heap. We still need an ANCHOR in .bss as a fallback because it's possible to allocate ZST on a pool without calling `Pool::grow` (= the lazily init ANCHOR is never initialized *but* it can be read)
64 lines
1.4 KiB
TOML
64 lines
1.4 KiB
TOML
[package]
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authors = [
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"Jorge Aparicio <jorge@japaric.io>",
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"Per Lindgren <per.lindgren@ltu.se>",
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"Emil Fresk <emil.fresk@gmail.com>",
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]
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categories = ["data-structures", "no-std"]
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description = "`static` friendly data structures that don't require dynamic memory allocation"
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documentation = "https://docs.rs/heapless"
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edition = "2018"
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keywords = ["static", "no-heap"]
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license = "MIT OR Apache-2.0"
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name = "heapless"
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repository = "https://github.com/japaric/heapless"
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version = "0.7.5"
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[features]
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default = ["cas"]
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cas = ["atomic-polyfill"]
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ufmt-impl = ["ufmt-write"]
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# read the docs before enabling: makes `Pool` Sync on x86_64
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x86-sync-pool = []
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# only for tests
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__trybuild = []
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# Enable larger MPMC sizes.
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mpmc_large = []
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defmt-impl = ["defmt"]
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[target.'cfg(any(target_arch = "x86_64", target_arch = "x86"))'.dev-dependencies]
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scoped_threadpool = "0.1.8"
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[target.thumbv6m-none-eabi.dependencies]
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atomic-polyfill = { version = "0.1.2", optional = true }
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[dependencies]
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hash32 = "0.2.1"
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[target.'cfg(target_arch = "x86_64")'.dependencies]
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spin = "0.9.2"
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[dependencies.serde]
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version = "1"
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optional = true
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default-features = false
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[dependencies.stable_deref_trait]
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version = "1"
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default-features = false
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[dependencies.ufmt-write]
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version = "0.1"
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optional = true
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[dev-dependencies.ufmt]
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version = "0.1"
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[dependencies.defmt]
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version = "0.2.1"
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optional = true
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[dev-dependencies.defmt]
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version = "0.2.1"
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features = ["unstable-test"]
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