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path: root/src/libstd/sys/cloudabi/stdio.rs
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2020-07-27mv std libs to library/mark-66/+0
2019-02-28libstd => 2018Taiki Endo-3/+3
2019-02-20Use standard Read/Write traits in sys::stdioPaul Dicker-5/+11
2019-02-20Remove sys::*::Stderr Write implementationPaul Dicker-13/+0
2018-12-25Remove licensesMark Rousskov-10/+0
2018-12-06Refactor stderr_prints_nothing into a more modular functionJethro Beekman-2/+2
2018-04-13std: Minimize size of panicking on wasmAlex Crichton-0/+4
This commit applies a few code size optimizations for the wasm target to the standard library, namely around panics. We notably know that in most configurations it's impossible for us to print anything in wasm32-unknown-unknown so we can skip larger portions of panicking that are otherwise simply informative. This allows us to get quite a nice size reduction. Finally we can also tweak where the allocation happens for the `Box<Any>` that we panic with. By only allocating once unwinding starts we can reduce the size of a panicking wasm module from 44k to 350 bytes.
2018-01-11Implement libstd for CloudABI.Ed Schouten-0/+79
Though CloudABI is strongly inspired by POSIX, its absence of features that don't work well with capability-based sandboxing makes it different enough that adding bits to sys/unix will make things a mess. This change therefore adds CloudABI specific platform code under sys/cloudabi and borrows parts from sys/unix that can be used without changes. One of the goals of this implementation is to build as much as possible directly on top of CloudABI's system call layer, as opposed to using the C library. This is preferred, as the system call layer is supposed to be stable, whereas the C library ABI technically is not. An advantage of this approach is that it allows us to implement certain interfaces, such as mutexes and condition variables more optimally. They can be lighter than the ones provided by pthreads. This change disables some modules that cannot realistically be implemented right now. For example, libstd's pathname abstraction is not designed with POSIX *at() (e.g., openat()) in mind. The *at() functions are the only set of file system APIs available on CloudABI. There is no global file system namespace, nor a process working directory. Discussions on how to port these modules over are outside the scope of this change. Apart from this change, there are still some other minor fixups that need to be made to platform independent code to make things build. These will be sent out separately, so they can be reviewed more thoroughly.