Add some additional APIs endpoints for #48 and more

backend/src/api/async_utils.rs

@@ -1,33 +1,38 @@
 //use usdpl_back::core::serdes::Primitive;
 use usdpl_back::AsyncCallable;
 
-/*pub struct AsyncIsh<T: Send,
-    TS: (Fn(super::ApiParameterType) -> Result<T, String>) + Send + Sync,
-    SG: (Fn(T) -> T) + Send + Sync + 'static,
-    TG: (Fn(T) -> super::ApiParameterType) + Send + Sync> {
+pub struct AsyncIsh<In: Send + 'static,
+    Out: Send + 'static,
+    TS: (Fn(super::ApiParameterType) -> Result<In, String>) + Send + Sync,
+    Gen: (Fn() -> SG) + Send + Sync,
+    SG: (Fn(In) -> Out) + Send + Sync + 'static,
+    TG: (Fn(Out) -> super::ApiParameterType) + Send + Sync> {
     pub trans_setter: TS, // assumed to be pretty fast
-    pub set_get: SG, // probably has locks (i.e. slow)
+    pub set_get: Gen, // probably has locks (i.e. slow)
     pub trans_getter: TG, // assumed to be pretty fast
 }
 
 #[async_trait::async_trait]
-impl <T: Send,
-    TS: (Fn(super::ApiParameterType) -> Result<T, String>) + Send + Sync,
-    SG: (Fn(T) -> T) + Send + Sync + 'static,
-    TG: (Fn(T) -> super::ApiParameterType) + Send + Sync>
-    AsyncCallable for AsyncIsh<T, TS, SG, TG> {
+impl <In: Send + 'static,
+    Out: Send + 'static,
+    TS: (Fn(super::ApiParameterType) -> Result<In, String>) + Send + Sync,
+    Gen: (Fn() -> SG) + Send + Sync,
+    SG: (Fn(In) -> Out) + Send + Sync + 'static,
+    TG: (Fn(Out) -> super::ApiParameterType) + Send + Sync>
+    AsyncCallable for AsyncIsh<In, Out, TS, Gen, SG, TG> {
     async fn call(&self, params: super::ApiParameterType) -> super::ApiParameterType {
         let t_to_set = match (self.trans_setter)(params) {
             Ok(t) => t,
             Err(e) => return vec![e.into()]
         };
-        let t_got = match tokio::task::spawn_blocking(|| (self.set_get)(t_to_set)).await {
+        let setter = (self.set_get)();
+        let t_got = match tokio::task::spawn_blocking(move || setter(t_to_set)).await {
             Ok(t) => t,
             Err(e) => return vec![e.to_string().into()],
         };
         (self.trans_getter)(t_got)
     }
-}*/
+}
 
 pub struct AsyncIshGetter<T: Send + 'static,
     Gen: (Fn() -> G) + Send + Sync,

backend/src/api/cpu.rs

@@ -3,14 +3,14 @@ use std::sync::{Arc, Mutex};
 use usdpl_back::core::serdes::Primitive;
 use usdpl_back::AsyncCallable;
 
-use crate::settings::{Cpu, SettingError, SettingVariant, MinMax};
+use crate::settings::{Cpus, SettingError, SettingVariant, MinMax};
 //use crate::utility::{unwrap_lock, unwrap_maybe_fatal};
 use super::handler::{ApiMessage, CpuMessage};
 
 /// Available CPUs web method
 pub fn max_cpus(_: super::ApiParameterType) -> super::ApiParameterType {
     super::utility::map_result(
-        Cpu::cpu_count()
+        Cpus::cpu_count()
             .map(|x| x as u64)
             .ok_or_else(
                 || SettingError {
@@ -90,6 +90,38 @@ pub fn set_cpus_online(
     }
 }*/
 
+pub fn set_smt(
+    sender: Sender<ApiMessage>,
+) -> impl AsyncCallable {
+    let sender = Arc::new(Mutex::new(sender)); // Sender is not Sync; this is required for safety
+    let getter = move || {
+        let sender2 = sender.clone();
+        move |smt: bool| {
+            let (tx, rx) = mpsc::channel();
+            let callback = move |values: Vec<bool>| tx.send(values).expect("set_smt callback send failed");
+            sender2.lock().unwrap().send(ApiMessage::Cpu(CpuMessage::SetSmt(smt, Box::new(callback)))).expect("set_smt send failed");
+            rx.recv().expect("set_smt callback recv failed")
+        }
+    };
+    super::async_utils::AsyncIsh {
+        trans_setter: |params| {
+            if let Some(&Primitive::Bool(smt_value)) = params.get(0) {
+                Ok(smt_value)
+            } else {
+                Err("set_smt missing/invalid parameter 0".to_owned())
+            }
+        },
+        set_get: getter,
+        trans_getter: |result| {
+            let mut output = Vec::with_capacity(result.len());
+            for &status in result.as_slice() {
+                output.push(status.into());
+            }
+            output
+        }
+    }
+}
+
 pub fn get_cpus_online(
     sender: Sender<ApiMessage>,
 ) -> impl AsyncCallable {

backend/src/api/handler.rs

@@ -1,6 +1,6 @@
 use std::sync::mpsc::{self, Receiver, Sender};
 
-use crate::settings::{Settings, Cpu, Gpu, Battery, General, OnSet, OnResume, MinMax};
+use crate::settings::{Settings, Cpus, Gpu, Battery, General, OnSet, OnResume, MinMax};
 use crate::persist::SettingsJson;
 use crate::utility::unwrap_maybe_fatal;
 
@@ -35,6 +35,7 @@ impl BatteryMessage {
 pub enum CpuMessage {
     SetCpuOnline(usize, bool),
     SetCpusOnline(Vec<bool>),
+    SetSmt(bool, Callback<Vec<bool>>),
     GetCpusOnline(Callback<Vec<bool>>),
     SetClockLimits(usize, Option<MinMax<u64>>),
     GetClockLimits(usize, Callback<Option<MinMax<u64>>>),
@@ -44,32 +45,40 @@ pub enum CpuMessage {
 }
 
 impl CpuMessage {
-    fn process(self, settings: &mut Vec<Cpu>) {
+    fn process(self, settings: &mut Cpus) {
         match self {
-            Self::SetCpuOnline(index, status) => {settings.get_mut(index).map(|c| c.online = status);},
+            Self::SetCpuOnline(index, status) => {settings.cpus.get_mut(index).map(|c| c.online = status);},
             Self::SetCpusOnline(cpus) => {
                 for i in 0..cpus.len() {
-                    settings.get_mut(i).map(|c| c.online = cpus[i]);
+                    settings.cpus.get_mut(i).map(|c| c.online = cpus[i]);
                 }
             },
+            Self::SetSmt(status, cb) => {
+                let mut result = Vec::with_capacity(settings.cpus.len());
+                for i in 0..settings.cpus.len() {
+                    settings.cpus[i].online = settings.cpus[i].online && (status || i % 2 == 0);
+                    result.push(settings.cpus[i].online);
+                }
+                cb(result);
+            }
             Self::GetCpusOnline(cb) => {
-                let mut result = Vec::with_capacity(settings.len());
-                for cpu in settings {
+                let mut result = Vec::with_capacity(settings.cpus.len());
+                for cpu in &settings.cpus {
                     result.push(cpu.online);
                 }
                 cb(result);
             },
-            Self::SetClockLimits(index, clocks) => {settings.get_mut(index).map(|c| c.clock_limits = clocks);},
-            Self::GetClockLimits(index, cb) => {settings.get(index).map(|c| cb(c.clock_limits.clone()));},
-            Self::SetCpuGovernor(index, gov) => {settings.get_mut(index).map(|c| c.governor = gov);},
+            Self::SetClockLimits(index, clocks) => {settings.cpus.get_mut(index).map(|c| c.clock_limits = clocks);},
+            Self::GetClockLimits(index, cb) => {settings.cpus.get(index).map(|c| cb(c.clock_limits.clone()));},
+            Self::SetCpuGovernor(index, gov) => {settings.cpus.get_mut(index).map(|c| c.governor = gov);},
             Self::SetCpusGovernor(govs) => {
                 for i in 0..govs.len() {
-                    settings.get_mut(i).map(|c| c.governor = govs[i].clone());
+                    settings.cpus.get_mut(i).map(|c| c.governor = govs[i].clone());
                 }
             },
             Self::GetCpusGovernor(cb) => {
-                let mut result = Vec::with_capacity(settings.len());
-                for cpu in settings {
+                let mut result = Vec::with_capacity(settings.cpus.len());
+                for cpu in &settings.cpus {
                     result.push(cpu.governor.clone());
                 }
                 cb(result);

backend/src/main.rs

@@ -94,6 +94,10 @@ fn main() -> Result<(), ()> {
             "CPU_get_onlines",
             api::cpu::get_cpus_online(api_sender.clone())
         )
+        .register_async(
+            "CPU_set_smt",
+            api::cpu::set_smt(api_sender.clone())
+        )
         .register(
             "CPU_set_clock_limits",
             api::cpu::set_clock_limits(api_sender.clone())

backend/src/settings/cpu.rs

@@ -4,6 +4,131 @@ use super::MinMax;
 use super::{OnResume, OnSet, SettingError, SettingsRange};
 use crate::persist::CpuJson;
 
+const CPU_PRESENT_PATH: &str = "/sys/devices/system/cpu/present";
+const CPU_SMT_PATH: &str = "/sys/devices/system/cpu/smt/control";
+
+#[derive(Debug, Clone)]
+pub struct Cpus {
+    pub cpus: Vec<Cpu>,
+    pub smt: bool,
+    pub smt_capable: bool,
+}
+
+impl OnSet for Cpus {
+    fn on_set(&mut self) -> Result<(), SettingError> {
+        if self.smt_capable {
+            // toggle SMT
+            if self.smt {
+                usdpl_back::api::files::write_single(CPU_SMT_PATH, "on").map_err(|e| {
+                    SettingError {
+                        msg: format!(
+                            "Failed to write `on` to `{}`: {}",
+                            CPU_SMT_PATH, e
+                        ),
+                        setting: super::SettingVariant::Cpu,
+                    }
+                })?;
+            } else {
+                usdpl_back::api::files::write_single(CPU_SMT_PATH, "off").map_err(|e| {
+                    SettingError {
+                        msg: format!(
+                            "Failed to write `off` to `{}`: {}",
+                            CPU_SMT_PATH, e
+                        ),
+                        setting: super::SettingVariant::Cpu,
+                    }
+                })?;
+            }
+        }
+        for (i, cpu) in self.cpus.as_mut_slice().iter_mut().enumerate() {
+            cpu.state.do_set_online = self.smt || i % 2 == 0;
+            cpu.on_set()?;
+        }
+        Ok(())
+    }
+}
+
+impl OnResume for Cpus {
+    fn on_resume(&self) -> Result<(), SettingError> {
+        for cpu in &self.cpus {
+            cpu.on_resume()?;
+        }
+        Ok(())
+    }
+}
+
+impl Cpus {
+    pub fn cpu_count() -> Option<usize> {
+        let mut data: String = usdpl_back::api::files::read_single(CPU_PRESENT_PATH)
+            .unwrap_or_else(|_| "0-7".to_string() /* Steam Deck's default */);
+        if let Some(dash_index) = data.find('-') {
+            let data = data.split_off(dash_index + 1);
+            if let Ok(max_cpu) = data.parse::<usize>() {
+                return Some(max_cpu + 1);
+            }
+        }
+        log::warn!("Failed to parse CPU info from kernel, is Tux evil?");
+        None
+    }
+
+    fn system_smt_capabilities() -> (bool, bool) {
+        match usdpl_back::api::files::read_single::<_, String, _>(CPU_SMT_PATH) {
+            Ok(val) => (val.trim().to_lowercase() == "on", true),
+            Err(_) => (false, false)
+        }
+    }
+
+    pub fn system_default() -> Self {
+        if let Some(max_cpu) = Self::cpu_count() {
+            let mut sys_cpus = Vec::with_capacity(max_cpu);
+            for i in 0..max_cpu {
+                sys_cpus.push(Cpu::from_sys(i));
+            }
+            let (smt_status, can_smt) = Self::system_smt_capabilities();
+            Self {
+                cpus: sys_cpus,
+                smt: smt_status,
+                smt_capable: can_smt,
+            }
+        } else {
+            Self {
+                cpus: vec![],
+                smt: false,
+                smt_capable: false,
+            }
+        }
+    }
+
+    #[inline]
+    pub fn from_json(mut other: Vec<CpuJson>, version: u64) -> Self {
+        let (_, can_smt) = Self::system_smt_capabilities();
+        let mut result = Vec::with_capacity(other.len());
+        let max_cpus = Self::cpu_count();
+        for (i, cpu) in other.drain(..).enumerate() {
+            // prevent having more CPUs than available
+            if let Some(max_cpus) = max_cpus {
+                if i == max_cpus {
+                    break;
+                }
+            }
+            result.push(Cpu::from_json(cpu, version, i));
+        }
+        if let Some(max_cpus) = max_cpus {
+            if result.len() != max_cpus {
+                let mut sys_cpus = Cpus::system_default();
+                for i in result.len()..sys_cpus.cpus.len() {
+                    result.push(sys_cpus.cpus.remove(i));
+                }
+            }
+        }
+        Self {
+            cpus: result,
+            smt: true,
+            smt_capable: can_smt,
+        }
+    }
+}
+
 #[derive(Debug, Clone)]
 pub struct Cpu {
     pub online: bool,
@@ -16,8 +141,6 @@ pub struct Cpu {
 const CPU_CLOCK_LIMITS_PATH: &str = "/sys/class/drm/card0/device/pp_od_clk_voltage";
 const CPU_FORCE_LIMITS_PATH: &str = "/sys/class/drm/card0/device/power_dpm_force_performance_level";
 
-const CPU_PRESENT_PATH: &str = "/sys/devices/system/cpu/present";
-
 impl Cpu {
     #[inline]
     pub fn from_json(other: CpuJson, version: u64, i: usize) -> Self {
@@ -41,7 +164,7 @@ impl Cpu {
 
     fn set_all(&mut self) -> Result<(), SettingError> {
         // set cpu online/offline
-        if self.index != 0 { // cpu0 cannot be disabled
+        if self.index != 0 && self.state.do_set_online { // cpu0 cannot be disabled
             let online_path = cpu_online_path(self.index);
             usdpl_back::api::files::write_single(&online_path, self.online as u8).map_err(|e| {
                 SettingError {
@@ -162,31 +285,6 @@ impl Cpu {
             state: crate::state::Cpu::default(),
         }
     }
-
-    pub fn cpu_count() -> Option<usize> {
-        let mut data: String = usdpl_back::api::files::read_single(CPU_PRESENT_PATH)
-            .unwrap_or_else(|_| "0-7".to_string() /* Steam Deck's default */);
-        if let Some(dash_index) = data.find('-') {
-            let data = data.split_off(dash_index + 1);
-            if let Ok(max_cpu) = data.parse::<usize>() {
-                return Some(max_cpu + 1);
-            }
-        }
-        log::warn!("Failed to parse CPU info from kernel, is Tux evil?");
-        None
-    }
-
-    pub fn system_default() -> Vec<Self> {
-        if let Some(max_cpu) = Self::cpu_count() {
-            let mut cpus = Vec::with_capacity(max_cpu);
-            for i in 0..max_cpu {
-                cpus.push(Self::from_sys(i));
-            }
-            cpus
-        } else {
-            Vec::with_capacity(0)
-        }
-    }
 }
 
 impl Into<CpuJson> for Cpu {

backend/src/settings/general.rs

@@ -2,9 +2,9 @@ use std::convert::Into;
 use std::path::PathBuf;
 //use std::sync::{Arc, Mutex};
 
-use super::{Battery, Cpu, Gpu};
+use super::{Battery, Cpus, Gpu};
 use super::{OnResume, OnSet, SettingError};
-use crate::persist::{CpuJson, SettingsJson};
+use crate::persist::SettingsJson;
 //use crate::utility::unwrap_lock;
 
 const LATEST_VERSION: u64 = 0;
@@ -44,7 +44,7 @@ impl OnSet for General {
 #[derive(Debug, Clone)]
 pub struct Settings {
     pub general: General,
-    pub cpus: Vec<Cpu>,
+    pub cpus: Cpus,
     pub gpu: Gpu,
     pub battery: Battery,
 }
@@ -52,9 +52,7 @@ pub struct Settings {
 impl OnSet for Settings {
     fn on_set(&mut self) -> Result<(), SettingError> {
         self.battery.on_set()?;
-        for cpu in self.cpus.iter_mut() {
-            cpu.on_set()?;
-        }
+        self.cpus.on_set()?;
         self.gpu.on_set()?;
         self.general.on_set()?;
         Ok(())
@@ -71,7 +69,7 @@ impl Settings {
                     path: json_path,
                     name: other.name,
                 },
-                cpus: Self::convert_cpus(other.cpus, other.version),
+                cpus: Cpus::from_json(other.cpus, other.version),
                 gpu: Gpu::from_json(other.gpu, other.version),
                 battery: Battery::from_json(other.battery, other.version),
             },
@@ -81,36 +79,13 @@ impl Settings {
                     path: json_path,
                     name: other.name,
                 },
-                cpus: Self::convert_cpus(other.cpus, other.version),
+                cpus: Cpus::from_json(other.cpus, other.version),
                 gpu: Gpu::from_json(other.gpu, other.version),
                 battery: Battery::from_json(other.battery, other.version),
             },
         }
     }
 
-    fn convert_cpus(mut cpus: Vec<CpuJson>, version: u64) -> Vec<Cpu> {
-        let mut result = Vec::with_capacity(cpus.len());
-        let max_cpus = Cpu::cpu_count();
-        for (i, cpu) in cpus.drain(..).enumerate() {
-            // prevent having more CPUs than available
-            if let Some(max_cpus) = max_cpus {
-                if i == max_cpus {
-                    break;
-                }
-            }
-            result.push(Cpu::from_json(cpu, version, i));
-        }
-        if let Some(max_cpus) = max_cpus {
-            if result.len() != max_cpus {
-                let mut sys_cpus = Cpu::system_default();
-                for i in result.len()..sys_cpus.len() {
-                    result.push(sys_cpus.remove(i));
-                }
-            }
-        }
-        result
-    }
-
     pub fn system_default(json_path: PathBuf) -> Self {
         Self {
             general: General {
@@ -118,14 +93,14 @@ impl Settings {
                 path: json_path,
                 name: crate::consts::DEFAULT_SETTINGS_NAME.to_owned(),
             },
-            cpus: Cpu::system_default(),
+            cpus: Cpus::system_default(),
             gpu: Gpu::system_default(),
             battery: Battery::system_default(),
         }
     }
 
     pub fn load_system_default(&mut self) {
-        self.cpus = Cpu::system_default();
+        self.cpus = Cpus::system_default();
         self.gpu = Gpu::system_default();
         self.battery = Battery::system_default();
     }
@@ -143,7 +118,7 @@ impl Settings {
                 self.general.persistent = false;
                 self.general.name = name;
             } else {
-                self.cpus = Self::convert_cpus(settings_json.cpus, settings_json.version);
+                self.cpus = Cpus::from_json(settings_json.cpus, settings_json.version);
                 self.gpu = Gpu::from_json(settings_json.gpu, settings_json.version);
                 self.battery = Battery::from_json(settings_json.battery, settings_json.version);
                 self.general.persistent = true;
@@ -166,9 +141,7 @@ impl OnResume for Settings {
         log::debug!("Applying settings for on_resume");
         self.battery.on_resume()?;
         log::debug!("Resumed battery");
-        for cpu in self.cpus.iter() {
-            cpu.on_resume()?;
-        }
+        self.cpus.on_resume()?;
         log::debug!("Resumed CPUs");
         self.gpu.on_resume()?;
         log::debug!("Resumed GPU");
@@ -184,7 +157,7 @@ impl Into<SettingsJson> for Settings {
             version: LATEST_VERSION,
             name: self.general.name.clone(),
             persistent: self.general.persistent,
-            cpus: self.cpus
+            cpus: self.cpus.cpus
                 .clone()
                 .drain(..)
                 .map(|cpu| cpu.into())

backend/src/settings/mod.rs

@@ -7,7 +7,7 @@ mod min_max;
 mod traits;
 
 pub use battery::Battery;
-pub use cpu::Cpu;
+pub use cpu::{Cpu, Cpus};
 pub use general::{SettingVariant, Settings, General};
 pub use gpu::Gpu;
 pub use min_max::MinMax;

backend/src/state/cpu.rs

@@ -2,6 +2,7 @@
 pub struct Cpu {
     pub clock_limits_set: bool,
     pub is_resuming: bool,
+    pub do_set_online: bool,
 }
 
 impl std::default::Default for Cpu {
@@ -9,6 +10,7 @@ impl std::default::Default for Cpu {
         Self {
             clock_limits_set: false,
             is_resuming: false,
+            do_set_online: true,
         }
     }
 }

src/backend.ts

@@ -62,6 +62,10 @@ export async function unsetBatteryChargeRate(): Promise<any[]> {
 
 // CPU
 
+export async function setCpuSmt(status: boolean): Promise<number> {
+    return (await call_backend("CPU_set_smt", [status]))[0];
+}
+
 export async function getCpuCount(): Promise<number> {
     return (await call_backend("CPU_count", []))[0];
 }
@@ -150,6 +154,10 @@ export async function loadGeneralDefaultSettings(): Promise<boolean> {
     return (await call_backend("GENERAL_load_default_settings", []))[0];
 }
 
+export async function loadGeneralSystemSettings(): Promise<boolean> {
+    return (await call_backend("GENERAL_load_system_settings", []))[0];
+}
+
 export async function getGeneralSettingsName(): Promise<boolean> {
     return (await call_backend("GENERAL_get_name", []))[0];
 }