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https://github.com/hyprwm/Hyprland
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init: Request SCHED_RR using CAP_SYS_NICE and add Python to nix dev shell (#2690)
* nix: add python3 to devShell * init: request SCHED_RR scheduling policy * init: checks if host supports reseting scheduler on fork * init: make gainRealTime more compatible with other OSes * init: remove linux-only code
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4 changed files with 19 additions and 1 deletions
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@ -77,7 +77,7 @@
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devShells = genSystems (system: {
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default = pkgsFor.${system}.mkShell {
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name = "hyprland-shell";
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nativeBuildInputs = with pkgsFor.${system}; [cmake];
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nativeBuildInputs = with pkgsFor.${system}; [ cmake python3 ];
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buildInputs = [self.packages.${system}.wlroots-hyprland];
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inputsFrom = [
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self.packages.${system}.wlroots-hyprland
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@ -3,3 +3,19 @@
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bool Init::isSudo() {
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return getuid() != geteuid() || !geteuid();
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}
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void Init::gainRealTime() {
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const int minPrio = sched_get_priority_min(SCHED_RR);
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const struct sched_param param = {.sched_priority = minPrio};
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if (pthread_setschedparam(pthread_self(), SCHED_RR, ¶m)) {
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Debug::log(WARN, "Failed to change process scheduling strategy");
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return;
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}
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pthread_atfork(NULL, NULL, []() {
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const struct sched_param param = {.sched_priority = 0};
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if (pthread_setschedparam(pthread_self(), SCHED_OTHER, ¶m))
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Debug::log(WARN, "Failed to reset process scheduling strategy");
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});
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}
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@ -4,4 +4,5 @@
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namespace Init {
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bool isSudo();
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void gainRealTime();
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};
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@ -89,6 +89,7 @@ int main(int argc, char** argv) {
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}
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std::cout << "Welcome to Hyprland!\n";
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Init::gainRealTime();
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// let's init the compositor.
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// it initializes basic Wayland stuff in the constructor.
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