mirror of https://github.com/PentHertz/srsLTE.git
inplace task now uses small buffer optimization for bigger captures
This commit is contained in:
parent
4b2b76cf01
commit
a6b7c5d1d2
|
@ -28,9 +28,9 @@
|
|||
|
||||
namespace srslte {
|
||||
|
||||
constexpr size_t default_buffer_size = 256;
|
||||
constexpr size_t default_buffer_size = 32;
|
||||
|
||||
template <class Signature, size_t Capacity = default_buffer_size, size_t Alignment = alignof(std::max_align_t)>
|
||||
template <class Signature, size_t Capacity = default_buffer_size>
|
||||
class inplace_task;
|
||||
|
||||
namespace task_details {
|
||||
|
@ -39,30 +39,42 @@ template <typename R, typename... Args>
|
|||
struct oper_table_t {
|
||||
using call_oper_t = R (*)(void* src, Args&&... args);
|
||||
using move_oper_t = void (*)(void* src, void* dest);
|
||||
// using copy_oper_t = void (*)(void* src, void* dest);
|
||||
using dtor_oper_t = void (*)(void* src);
|
||||
|
||||
static oper_table_t* get_empty() noexcept
|
||||
const static oper_table_t* get_empty() noexcept
|
||||
{
|
||||
static oper_table_t t;
|
||||
t.call = [](void* src, Args&&... args) -> R { throw std::bad_function_call(); };
|
||||
t.move = [](void*, void*) {};
|
||||
// t.copy = [](void*, void*) {};
|
||||
t.dtor = [](void*) {};
|
||||
const static oper_table_t t{true,
|
||||
[](void* src, Args&&... args) -> R { throw std::bad_function_call(); },
|
||||
[](void*, void*) {},
|
||||
[](void*) {}};
|
||||
return &t;
|
||||
}
|
||||
|
||||
template <typename Func>
|
||||
static oper_table_t* get() noexcept
|
||||
const static oper_table_t* get_small() noexcept
|
||||
{
|
||||
static oper_table_t t{};
|
||||
t.call = [](void* src, Args&&... args) -> R { return (*static_cast<Func*>(src))(std::forward<Args>(args)...); };
|
||||
t.move = [](void* src, void* dest) -> void {
|
||||
const static oper_table_t t{
|
||||
true,
|
||||
[](void* src, Args&&... args) -> R { return (*static_cast<Func*>(src))(std::forward<Args>(args)...); },
|
||||
[](void* src, void* dest) -> void {
|
||||
::new (dest) Func{std::move(*static_cast<Func*>(src))};
|
||||
static_cast<Func*>(src)->~Func();
|
||||
};
|
||||
// t.copy = [](void* src, void* dest) -> void { ::new (dest) Func{*static_cast<Func*>(src)}; };
|
||||
t.dtor = [](void* src) -> void { static_cast<Func*>(src)->~Func(); };
|
||||
},
|
||||
[](void* src) -> void { static_cast<Func*>(src)->~Func(); }};
|
||||
return &t;
|
||||
}
|
||||
|
||||
template <typename Func>
|
||||
const static oper_table_t* get_big() noexcept
|
||||
{
|
||||
const static oper_table_t t{
|
||||
false,
|
||||
[](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(); }};
|
||||
return &t;
|
||||
}
|
||||
|
||||
|
@ -72,101 +84,123 @@ struct oper_table_t {
|
|||
oper_table_t& operator=(oper_table_t&&) = delete;
|
||||
~oper_table_t() = default;
|
||||
|
||||
bool is_in_buffer;
|
||||
call_oper_t call;
|
||||
move_oper_t move;
|
||||
// copy_oper_t copy;
|
||||
dtor_oper_t dtor;
|
||||
|
||||
static oper_table_t<R, Args...>* empty_oper;
|
||||
|
||||
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_),
|
||||
move(move_),
|
||||
dtor(dtor_)
|
||||
{}
|
||||
};
|
||||
|
||||
template <class>
|
||||
struct is_inplace_task : std::false_type {};
|
||||
template <class Sig, size_t Cap, size_t Align>
|
||||
struct is_inplace_task<inplace_task<Sig, Cap, Align> > : std::true_type {};
|
||||
|
||||
template <typename R, typename... Args>
|
||||
oper_table_t<R, Args...>* oper_table_t<R, Args...>::empty_oper = oper_table_t<R, Args...>::get_empty();
|
||||
template <class Sig, size_t Capacity>
|
||||
struct is_inplace_task<inplace_task<Sig, Capacity> > : std::true_type {};
|
||||
|
||||
} // namespace task_details
|
||||
|
||||
template <class R, class... Args, size_t Capacity, size_t Alignment>
|
||||
class inplace_task<R(Args...), Capacity, Alignment>
|
||||
template <class R, class... Args, size_t Capacity>
|
||||
class inplace_task<R(Args...), Capacity>
|
||||
{
|
||||
using storage_t = typename std::aligned_storage<Capacity, Alignment>::type;
|
||||
static constexpr size_t capacity = Capacity >= sizeof(void*) ? Capacity : sizeof(void*);
|
||||
using storage_t = typename std::aligned_storage<capacity, alignof(std::max_align_t)>::type;
|
||||
using oper_table_t = task_details::oper_table_t<R, Args...>;
|
||||
|
||||
public:
|
||||
inplace_task() noexcept { oper_ptr = oper_table_t::empty_oper; }
|
||||
inplace_task() noexcept { oper_ptr = oper_table_t::get_empty(); }
|
||||
|
||||
template <typename T,
|
||||
typename FunT = typename std::decay<T>::type,
|
||||
typename = typename std::enable_if<sizeof(FunT) <= capacity>::type,
|
||||
typename = typename std::enable_if<not task_details::is_inplace_task<FunT>::value>::type>
|
||||
inplace_task(T&& function)
|
||||
{
|
||||
static_assert(sizeof(FunT) <= sizeof(buffer), "inplace_task cannot store object with given size.\n");
|
||||
static_assert(Alignment % alignof(FunT) == 0, "inplace_task cannot store object with given alignment.\n");
|
||||
|
||||
oper_ptr = oper_table_t::template get_small<FunT>();
|
||||
::new (&buffer) FunT{std::forward<T>(function)};
|
||||
oper_ptr = oper_table_t::template get<T>();
|
||||
}
|
||||
|
||||
template <typename T,
|
||||
typename FunT = typename std::decay<T>::type,
|
||||
typename = typename std::enable_if<not task_details::is_inplace_task<FunT>::value and
|
||||
(sizeof(FunT) > capacity)>::type>
|
||||
inplace_task(T&& function)
|
||||
{
|
||||
oper_ptr = oper_table_t::template get_big<FunT>();
|
||||
ptr = static_cast<void*>(new FunT{std::forward<T>(function)});
|
||||
}
|
||||
|
||||
inplace_task(inplace_task&& other) noexcept
|
||||
{
|
||||
oper_ptr = other.oper_ptr;
|
||||
other.oper_ptr = oper_table_t::empty_oper;
|
||||
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);
|
||||
}
|
||||
}
|
||||
|
||||
// inplace_task(const inplace_task& other) noexcept
|
||||
// {
|
||||
// oper_ptr = other.oper_ptr;
|
||||
// oper_ptr->copy(&other.buffer, &buffer);
|
||||
// }
|
||||
|
||||
~inplace_task() { oper_ptr->dtor(&buffer); }
|
||||
~inplace_task() { oper_ptr->dtor(get_buffer()); }
|
||||
|
||||
inplace_task& operator=(inplace_task&& other) noexcept
|
||||
{
|
||||
oper_ptr->dtor(&buffer);
|
||||
oper_ptr->dtor(get_buffer());
|
||||
oper_ptr = other.oper_ptr;
|
||||
other.oper_ptr = oper_table_t::empty_oper;
|
||||
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);
|
||||
}
|
||||
return *this;
|
||||
}
|
||||
|
||||
// inplace_task& operator=(const inplace_task& other) noexcept
|
||||
// {
|
||||
// if (this != &other) {
|
||||
// oper_ptr->dtor(&buffer);
|
||||
// oper_ptr = other.oper_ptr;
|
||||
// oper_ptr->copy(&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::empty_oper; }
|
||||
bool is_empty() const { return oper_ptr == oper_table_t::get_empty(); }
|
||||
bool is_in_small_buffer() const { return oper_ptr->is_in_buffer; }
|
||||
|
||||
void swap(inplace_task& other) noexcept
|
||||
{
|
||||
if (this == &other)
|
||||
return;
|
||||
|
||||
if (oper_ptr->is_in_buffer and other.oper_ptr->is_in_buffer) {
|
||||
storage_t tmp;
|
||||
oper_ptr->move(&buffer, &tmp);
|
||||
other.oper_ptr->move(&other.buffer, &buffer);
|
||||
oper_ptr->move(&tmp, &other.buffer);
|
||||
} else if (oper_ptr->is_in_buffer and not other.oper_ptr->is_in_buffer) {
|
||||
void* tmpptr = other.ptr;
|
||||
oper_ptr->move(&buffer, &other.buffer);
|
||||
ptr = tmpptr;
|
||||
} else if (not oper_ptr->is_in_buffer and other.oper_ptr->is_in_buffer) {
|
||||
void* tmpptr = ptr;
|
||||
other.oper_ptr->move(&other.buffer, &buffer);
|
||||
oper_ptr->move(&tmpptr, &other.ptr);
|
||||
} else {
|
||||
std::swap(ptr, other.ptr);
|
||||
}
|
||||
std::swap(oper_ptr, other.oper_ptr);
|
||||
}
|
||||
|
||||
friend void swap(inplace_task& lhs, inplace_task& rhs) noexcept { lhs.swap(rhs); }
|
||||
|
||||
private:
|
||||
union {
|
||||
storage_t buffer;
|
||||
oper_table_t* oper_ptr;
|
||||
void* ptr;
|
||||
};
|
||||
const oper_table_t* oper_ptr;
|
||||
|
||||
void* get_buffer() { return oper_ptr->is_in_buffer ? &buffer : ptr; }
|
||||
};
|
||||
|
||||
} // namespace srslte
|
||||
|
|
|
@ -324,6 +324,10 @@ int test_task_thread_pool3()
|
|||
struct C {
|
||||
std::unique_ptr<int> val{new int{5}};
|
||||
};
|
||||
struct D {
|
||||
std::array<int, 64> big_val;
|
||||
D() { big_val[0] = 6; }
|
||||
};
|
||||
|
||||
int test_inplace_task()
|
||||
{
|
||||
|
@ -350,6 +354,36 @@ int test_inplace_task()
|
|||
TESTASSERT(v == 5);
|
||||
}
|
||||
|
||||
D d;
|
||||
srslte::inplace_task<void()> t6 = [&v, d]() { v = d.big_val[0]; };
|
||||
{
|
||||
srslte::inplace_task<void()> t7;
|
||||
t6();
|
||||
TESTASSERT(v == 6);
|
||||
v = 0;
|
||||
t7 = std::move(t6);
|
||||
t7();
|
||||
TESTASSERT(v == 6);
|
||||
}
|
||||
|
||||
auto l1 = std::bind([&v](C& c) { v = *c.val; }, C{});
|
||||
auto l2 = [&v, d]() { v = d.big_val[0]; };
|
||||
t = std::move(l1);
|
||||
t2 = l2;
|
||||
v = 0;
|
||||
t();
|
||||
TESTASSERT(v == 5);
|
||||
t2();
|
||||
TESTASSERT(v == 6);
|
||||
TESTASSERT(t.is_in_small_buffer() and not t2.is_in_small_buffer());
|
||||
swap(t, t2);
|
||||
TESTASSERT(t2.is_in_small_buffer() and not t.is_in_small_buffer());
|
||||
v = 0;
|
||||
t();
|
||||
TESTASSERT(v == 6);
|
||||
t2();
|
||||
TESTASSERT(v == 5);
|
||||
|
||||
std::cout << "outcome: Success\n";
|
||||
std::cout << "========================================\n";
|
||||
return 0;
|
||||
|
|
Loading…
Reference in New Issue