Support new spawn #13
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| use crate::process_info::TxContext; | ||
| use std::{ | ||
| collections::HashMap, | ||
| ffi::c_void, | ||
| pin::Pin, | ||
| sync::{Mutex, MutexGuard}, | ||
| }; | ||
|
|
||
| lazy_static! { | ||
| static ref GLOBAL_DATA: Pin<Box<Mutex<GlobalData>>> = Pin::new(Box::default()); | ||
| } | ||
| static mut GLOBAL_DATA_PTR: *mut Mutex<GlobalData> = std::ptr::null_mut(); | ||
|
|
||
| #[derive(Default, PartialEq, Eq, Clone, Hash, Debug)] | ||
| pub struct TxID(u64); | ||
| impl From<u64> for TxID { | ||
| fn from(value: u64) -> Self { | ||
| Self(value) | ||
| } | ||
| } | ||
| impl From<TxID> for u64 { | ||
| fn from(value: TxID) -> Self { | ||
| value.0 | ||
| } | ||
| } | ||
| impl TxID { | ||
| fn next(&mut self) -> Self { | ||
| self.0 += 1; | ||
| self.clone() | ||
| } | ||
| } | ||
|
|
||
| #[derive(Default, PartialEq, Eq, Clone, Hash, Debug)] | ||
| pub struct ProcID(u64); | ||
| impl From<u64> for ProcID { | ||
| fn from(value: u64) -> Self { | ||
| Self(value) | ||
| } | ||
| } | ||
| impl From<ProcID> for u64 { | ||
| fn from(value: ProcID) -> Self { | ||
| value.0 | ||
| } | ||
| } | ||
| impl ProcID { | ||
| pub fn next(&mut self) -> Self { | ||
| let id = self.clone(); | ||
| self.0 += 1; | ||
| id | ||
| } | ||
| } | ||
|
|
||
| pub struct GlobalData { | ||
| tx_ctx: HashMap<TxID, TxContext>, | ||
| tx_ctx_id_count: TxID, | ||
| } | ||
| impl Default for GlobalData { | ||
| fn default() -> Self { | ||
| TxContext::set_ctx_id(0.into()); | ||
| Self { | ||
| tx_ctx: [(0.into(), TxContext::default())].into(), | ||
| tx_ctx_id_count: 1.into(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl GlobalData { | ||
| pub fn get() -> &'static Mutex<Self> { | ||
| if unsafe { GLOBAL_DATA_PTR.is_null() } { | ||
| &GLOBAL_DATA | ||
| } else { | ||
| unsafe { &mut *GLOBAL_DATA_PTR as &mut Mutex<Self> } | ||
| } | ||
| } | ||
| pub fn locked() -> MutexGuard<'static, Self> { | ||
| Self::get().lock().unwrap() | ||
| } | ||
| pub fn get_ptr() -> *const c_void { | ||
| if unsafe { GLOBAL_DATA_PTR.is_null() } { | ||
| let infos_ref: &Mutex<Self> = &GLOBAL_DATA; | ||
| infos_ref as *const Mutex<Self> as *const c_void | ||
| } else { | ||
| unsafe { GLOBAL_DATA_PTR as *const c_void } | ||
| } | ||
| } | ||
| pub fn set_ptr(ptr: *const c_void) { | ||
| unsafe { | ||
| GLOBAL_DATA_PTR = ptr as *mut Mutex<GlobalData>; | ||
| } | ||
| } | ||
|
|
||
| pub fn set_tx(&mut self, ctx: TxContext) -> TxID { | ||
| self.tx_ctx.insert(self.tx_ctx_id_count.next(), ctx); | ||
| self.tx_ctx_id_count.clone() | ||
| } | ||
| pub fn get_tx(&self, id: &TxID) -> &TxContext { | ||
| self.tx_ctx | ||
| .get(id) | ||
| .unwrap_or_else(|| panic!("unknow tx context: {:?}", id)) | ||
| } | ||
| pub fn get_tx_mut(&mut self, id: &TxID) -> &mut TxContext { | ||
| self.tx_ctx | ||
| .get_mut(id) | ||
| .unwrap_or_else(|| panic!("unknow mut tx context: {:?}", id)) | ||
| } | ||
| } | ||
|
|
||
| #[macro_export] | ||
| macro_rules! get_tx { | ||
| ($txid:expr) => { | ||
| GlobalData::locked().get_tx(&$txid) | ||
| }; | ||
| } | ||
|
|
||
| #[macro_export] | ||
| macro_rules! get_tx_mut { | ||
| ($txid:expr) => { | ||
| GlobalData::locked().get_tx_mut(&$txid) | ||
| }; | ||
| } | ||
|
|
||
| #[macro_export] | ||
| macro_rules! get_proc { | ||
| ($txid: expr, $procid: expr) => { | ||
| GlobalData::locked().get_tx(&$txid).process(&$procid) | ||
| }; | ||
| } | ||
|
|
||
| #[macro_export] | ||
| macro_rules! get_cur_proc { | ||
| () => { | ||
| GlobalData::locked() | ||
| .get_tx(&TxContext::ctx_id()) | ||
| .process(&Process::ctx_id()) | ||
| }; | ||
| } | ||
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Why do you modify the original data here, but clone a copy of the data as the return value at the same time?
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In many places, the
nextstep isHashMap::insert. This way, the return is more convenient to use.