93 lines
2.1 KiB
Rust
93 lines
2.1 KiB
Rust
use std::sync::{Arc, RwLock};
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use std::thread;
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struct PoolDummy {
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test_buf: [u8; 128],
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}
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struct PoolAccessDummy<'a> {
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pool_dummy: &'a mut PoolDummy,
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no_deletion: bool,
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}
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impl PoolAccessDummy<'_> {
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fn modify(&mut self) -> &mut [u8] {
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self.pool_dummy.modify()
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}
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fn release(&mut self) {
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self.no_deletion = true;
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}
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}
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impl Drop for PoolAccessDummy<'_> {
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fn drop(&mut self) {
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if self.no_deletion {
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println!("Pool access: Drop with no deletion")
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} else {
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self.pool_dummy.delete();
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println!("Pool access: Drop with deletion");
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}
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}
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}
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impl Default for PoolDummy {
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fn default() -> Self {
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PoolDummy { test_buf: [0; 128] }
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}
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}
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impl PoolDummy {
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fn modify(&mut self) -> &mut [u8] {
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self.test_buf.as_mut_slice()
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}
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fn modify_with_accessor(&mut self) -> PoolAccessDummy {
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PoolAccessDummy {
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pool_dummy: self,
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no_deletion: false,
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}
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}
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fn read(&self) -> &[u8] {
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self.test_buf.as_slice()
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}
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fn delete(&mut self) {
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println!("Store content was deleted");
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}
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}
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fn pool_test() {
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println!("Hello World");
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let shared_dummy = Arc::new(RwLock::new(PoolDummy::default()));
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let shared_clone = shared_dummy.clone();
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let jh0 = thread::spawn(move || loop {
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{
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let mut dummy = shared_dummy.write().unwrap();
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let buf = dummy.modify();
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buf[0] = 1;
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let mut accessor = dummy.modify_with_accessor();
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let buf = accessor.modify();
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buf[0] = 2;
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}
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});
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let jh1 = thread::spawn(move || loop {
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{
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let dummy = shared_clone.read().unwrap();
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let buf = dummy.read();
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println!("Buffer 0: {:?}", buf[0]);
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}
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let mut dummy = shared_clone.write().unwrap();
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let mut accessor = dummy.modify_with_accessor();
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let buf = accessor.modify();
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buf[0] = 3;
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accessor.release();
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});
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jh0.join().unwrap();
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jh1.join().unwrap();
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}
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