forked from M-Labs/artiq-zynq
31 lines
1.1 KiB
Rust
31 lines
1.1 KiB
Rust
use alloc::string::String;
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use cslice::{CSlice, AsCSlice};
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use core::mem::{transmute, forget};
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use super::{KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, Message};
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pub extern 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.as_mut().unwrap().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 slice = transmute(v.as_c_slice());
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// we intentionally leak the memory here,
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// which does not matter as core1 would restart
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forget(v);
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slice
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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 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.as_mut().unwrap().send(Message::CachePutRequest(key, value));
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}
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}
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