de71dbec0d
This commit implements a simple helper for converting `&str` to `CString` and mapping to the appropriate WASI error. It also adds a `path_cstring` helper method in `PathGet` where the conversion was used the most. Fixes #104.
62 lines
2.0 KiB
Rust
62 lines
2.0 KiB
Rust
#![allow(non_camel_case_types)]
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#![allow(unused_unsafe)]
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#![allow(unused)]
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use crate::helpers::systemtime_to_timestamp;
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use crate::memory::*;
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use crate::sys::host_impl;
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use crate::{host, wasm32, Error, Result};
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use cpu_time::{ProcessTime, ThreadTime};
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use lazy_static::lazy_static;
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use std::convert::TryInto;
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use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
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lazy_static! {
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static ref START_MONOTONIC: Instant = Instant::now();
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}
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pub(crate) fn clock_res_get(clock_id: host::__wasi_clockid_t) -> Result<host::__wasi_timestamp_t> {
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unimplemented!("clock_res_get")
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}
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pub(crate) fn clock_time_get(clock_id: host::__wasi_clockid_t) -> Result<host::__wasi_timestamp_t> {
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let duration = match clock_id {
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host::__WASI_CLOCK_REALTIME => get_monotonic_time(),
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host::__WASI_CLOCK_MONOTONIC => get_realtime_time()?,
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host::__WASI_CLOCK_PROCESS_CPUTIME_ID => get_proc_cputime()?,
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host::__WASI_CLOCK_THREAD_CPUTIME_ID => get_thread_cputime()?,
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_ => return Err(Error::EINVAL),
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};
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duration.as_nanos().try_into().map_err(Into::into)
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}
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pub(crate) fn poll_oneoff(
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input: Vec<Result<host::__wasi_subscription_t>>,
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output_slice: &mut [wasm32::__wasi_event_t],
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) -> Result<wasm32::size_t> {
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unimplemented!("poll_oneoff")
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}
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fn get_monotonic_time() -> Duration {
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// We're circumventing the fact that we can't get a Duration from an Instant
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// The epoch of __WASI_CLOCK_MONOTONIC is undefined, so we fix a time point once
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// and count relative to this time point.
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//
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// The alternative would be to copy over the implementation of std::time::Instant
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// to our source tree and add a conversion to std::time::Duration
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START_MONOTONIC.elapsed()
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}
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fn get_realtime_time() -> Result<Duration> {
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SystemTime::now()
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.duration_since(UNIX_EPOCH)
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.map_err(|_| Error::EFAULT)
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}
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fn get_proc_cputime() -> Result<Duration> {
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Ok(ProcessTime::try_now()?.as_duration())
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}
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fn get_thread_cputime() -> Result<Duration> {
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Ok(ThreadTime::try_now()?.as_duration())
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}
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