forked from M-Labs/artiq-zynq
38 lines
1.1 KiB
Rust
38 lines
1.1 KiB
Rust
use alloc::{boxed::Box, string::String};
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use core::mem::{forget, transmute};
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use cslice::{AsCSlice, CSlice};
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use super::{Message, KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0};
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pub extern "C" fn get(key: CSlice<u8>) -> &CSlice<'static, i32> {
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let key = String::from_utf8(key.as_ref().to_vec()).unwrap();
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unsafe {
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KERNEL_CHANNEL_1TO0
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.as_mut()
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.unwrap()
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.send(Message::CacheGetRequest(key));
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let msg = KERNEL_CHANNEL_0TO1.as_mut().unwrap().recv();
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if let Message::CacheGetReply(v) = msg {
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let leaked = Box::new(v.as_c_slice());
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let reference = transmute(leaked.as_ref());
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forget(leaked);
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forget(v);
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reference
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} else {
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panic!("Expected CacheGetReply for CacheGetRequest");
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}
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}
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}
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pub extern "C" fn put(key: CSlice<u8>, list: &CSlice<i32>) {
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let key = String::from_utf8(key.as_ref().to_vec()).unwrap();
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let value = list.as_ref().to_vec();
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unsafe {
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KERNEL_CHANNEL_1TO0
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.as_mut()
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.unwrap()
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.send(Message::CachePutRequest(key, value));
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}
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}
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