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srsLTE
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avoid branching in inplace_task

This commit is contained in:
Francisco Paisana 2020-04-14 10:47:17 +01:00 committed by Francisco Paisana
parent ef834b3c60
commit cd9c722aa0
1 changed files with 7 additions and 18 deletions
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25
lib/include/srslte/common/inplace_task.h
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@ -69,12 +69,12 @@ struct oper_table_t {
{
const static oper_table_t t{
false,
[](void* src, Args&&... args) -> R { return (*static_cast<Func*>(src))(std::forward<Args>(args)...); },
[](void* src, Args&&... args) -> R { return (**static_cast<Func**>(src))(std::forward<Args>(args)...); },
[](void* src, void* dest) -> void {
*static_cast<Func**>(dest) = *static_cast<Func**>(src);
*static_cast<Func**>(src) = nullptr;
},
[](void* src) -> void { static_cast<Func*>(src)->~Func(); }};
[](void* src) -> void { (*static_cast<Func**>(src))->~Func(); }};
return &t;
}
@ -90,7 +90,6 @@ struct oper_table_t {
dtor_oper_t dtor;
private:
oper_table_t() = default;
oper_table_t(bool is_in_buffer_, call_oper_t call_, move_oper_t move_, dtor_oper_t dtor_) :
is_in_buffer(is_in_buffer_),
call(call_),
@ -142,29 +141,21 @@ public:
{
oper_ptr = other.oper_ptr;
other.oper_ptr = oper_table_t::get_empty();
if (oper_ptr->is_in_buffer) {
oper_ptr->move(&other.buffer, &buffer);
} else {
oper_ptr->move(&other.ptr, &ptr);
}
oper_ptr->move(&other.buffer, &buffer);
}
~inplace_task() { oper_ptr->dtor(get_buffer()); }
~inplace_task() { oper_ptr->dtor(&buffer); }
inplace_task& operator=(inplace_task&& other) noexcept
{
oper_ptr->dtor(get_buffer());
oper_ptr->dtor(&buffer);
oper_ptr = other.oper_ptr;
other.oper_ptr = oper_table_t::get_empty();
if (oper_ptr->is_in_buffer) {
oper_ptr->move(&other.buffer, &buffer);
} else {
oper_ptr->move(&other.ptr, &ptr);
}
oper_ptr->move(&other.buffer, &buffer);
return *this;
}
R operator()(Args&&... args) { return oper_ptr->call(get_buffer(), std::forward<Args>(args)...); }
R operator()(Args&&... args) { return oper_ptr->call(&buffer, std::forward<Args>(args)...); }
bool is_empty() const { return oper_ptr == oper_table_t::get_empty(); }
bool is_in_small_buffer() const { return oper_ptr->is_in_buffer; }
@ -201,8 +192,6 @@ private:
void* ptr;
};
const oper_table_t* oper_ptr;
void* get_buffer() { return oper_ptr->is_in_buffer ? &buffer : ptr; }
};
} // namespace srslte