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common/fiber: Take shared_ptr<Fiber> by copy in YieldTo 

YieldTo does not intend to modify the passed shared_ptrs.
Pass it by copy to keep a reference count while this function executes.
This commit is contained in:
ReinUsesLisp 2020-10-28 01:42:41 -03:00
parent cd92a94965
commit cdb2480d39
2 changed files with 3 additions and 3 deletions
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4
src/common/fiber.cpp
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@ -91,7 +91,7 @@ void Fiber::Rewind() {
SwitchToFiber(impl->rewind_handle); SwitchToFiber(impl->rewind_handle);
} }
void Fiber::YieldTo(std::shared_ptr<Fiber>& from, std::shared_ptr<Fiber>& to) { void Fiber::YieldTo(std::shared_ptr<Fiber> from, std::shared_ptr<Fiber> to) {
ASSERT_MSG(from != nullptr, "Yielding fiber is null!"); ASSERT_MSG(from != nullptr, "Yielding fiber is null!");
ASSERT_MSG(to != nullptr, "Next fiber is null!"); ASSERT_MSG(to != nullptr, "Next fiber is null!");
to->guard.lock(); to->guard.lock();
@ -199,7 +199,7 @@ void Fiber::Rewind() {
boost::context::detail::jump_fcontext(impl->rewind_context, this); boost::context::detail::jump_fcontext(impl->rewind_context, this);
} }
void Fiber::YieldTo(std::shared_ptr<Fiber>& from, std::shared_ptr<Fiber>& to) { void Fiber::YieldTo(std::shared_ptr<Fiber> from, std::shared_ptr<Fiber> to) {
ASSERT_MSG(from != nullptr, "Yielding fiber is null!"); ASSERT_MSG(from != nullptr, "Yielding fiber is null!");
ASSERT_MSG(to != nullptr, "Next fiber is null!"); ASSERT_MSG(to != nullptr, "Next fiber is null!");
to->guard.lock(); to->guard.lock();

2
src/common/fiber.h
View File

@ -46,7 +46,7 @@ public:
/// Yields control from Fiber 'from' to Fiber 'to' /// Yields control from Fiber 'from' to Fiber 'to'
/// Fiber 'from' must be the currently running fiber. /// Fiber 'from' must be the currently running fiber.
static void YieldTo(std::shared_ptr<Fiber>& from, std::shared_ptr<Fiber>& to); static void YieldTo(std::shared_ptr<Fiber> from, std::shared_ptr<Fiber> to);
[[nodiscard]] static std::shared_ptr<Fiber> ThreadToFiber(); [[nodiscard]] static std::shared_ptr<Fiber> ThreadToFiber();
void SetRewindPoint(std::function<void(void*)>&& rewind_func, void* start_parameter); void SetRewindPoint(std::function<void(void*)>&& rewind_func, void* start_parameter);