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Rust allocator using jemalloc as a backend

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This is concerning the `jemalloc-ctl` crate: It is often important to distinguish between the number of allocations and not only the number of allocated bytes. For example it could make...

Compile on Linux targeting windows. `cargo build --target x86_64-pc-windows-gnu --release --verbose` ``` Running `rustc --crate-name jemalloc_sys /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/jemalloc-sys-0.3.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 --cfg 'feature="background_threads_runtime_support"' -C metadata=b6586f656434efdb -C extra-filename=-b6586f656434efdb...

I see that x86_64-pc-windows-gnu is supported, but when I try to use it in a test program I get the error messages (it can't find the specified file): https://gist.github.com/rust-play/a29bb45bd2e6077616d1a5256072d4fb

Hi! I've a memory leak in an application. After some search I found this crate and restrict the area of my problem. After some tries I have a strange behavior:...

When cross compiling for arm with clang, `configure` doesn't seem to add the `-E` flag when running clang when it checks the preprocessor. This results in "C preprocessor fails sanity...

`cargo run --release` will crash when using jemallocator. I tried on two machines running macOS 10.15 beta, both will produce the same result. ```rust #[global_allocator] static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;...

This PR fixes several compilation warnings and skip function pointer for ctests. I hope this can be a step to merging #130.

The jemalloc.h produced by jemalloc-sys contain the following macros: ``` #define JEMALLOC_VERSION "0.0.0-0-g0000000000000000000000000000000000000000" #define JEMALLOC_VERSION_MAJOR 0 #define JEMALLOC_VERSION_MINOR 0 #define JEMALLOC_VERSION_BUGFIX 0 #define JEMALLOC_VERSION_NREV 0 #define JEMALLOC_VERSION_GID "0000000000000000000000000000000000000000" ``` where...

With recent changes to an application, I am running into the error `memory allocation of n bytes failed` (where n is a small number eg. 5, 1, 4) when using...