mirror of https://github.com/bsnes-emu/bsnes.git
51 lines
841 B
C++
51 lines
841 B
C++
#pragma once
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//shared functionality used for pObject on all platforms
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struct Lock {
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struct Handle {
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Handle(const Lock* self) : self(self) {
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if(self) ++self->locks;
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}
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~Handle() {
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release();
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}
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auto release() -> bool {
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if(self) {
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--self->locks;
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self = nullptr;
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return true;
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}
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return false;
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}
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const Lock* self = nullptr;
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};
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auto acquired() const -> bool {
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return locks || Application::state().quit;
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}
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auto acquire() const -> Handle {
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return {this};
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}
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//deprecated C-style manual functions
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//prefer RAII acquire() functionality instead in newly written code
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auto locked() const -> bool {
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return acquired();
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}
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auto lock() -> void {
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++locks;
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}
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auto unlock() -> void {
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--locks;
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}
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mutable int locks = 0;
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};
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