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Use if statement in basic_stream:

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An `if` statement is cheaper to instantiate without additional runtime
cost when optimizations are enabled.

Signed-off-by: Damian Jarek <damian.jarek93@gmail.com>
This commit is contained in:
Damian Jarek
2019-05-27 02:18:14 +02:00
parent 894ab45052
commit 8198571555
2 changed files with 17 additions and 44 deletions
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1
CHANGELOG.md
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@ -3,6 +3,7 @@ Version 257:
* Add b2 features for compile-time options used in testing
* Remove redundant dependencies in http/server/fast example
* Remove experimental/unit_test/thread.hpp
* Use `if` statement in basic_stream::transfer_op
--------------------------------------------------------------------------------

60
include/boost/beast/core/impl/basic_stream.hpp
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@ -219,63 +219,35 @@ class transfer_op
using is_read = std::integral_constant<bool, isRead>;
op_state&
state(std::true_type)
{
return impl_->read;
}
op_state&
state(std::false_type)
{
return impl_->write;
}
op_state&
state()
{
return state(
std::integral_constant<bool, isRead>{});
}
std::size_t
available_bytes(std::true_type)
{
return rate_policy_access::
available_read_bytes(impl_->policy());
}
std::size_t
available_bytes(std::false_type)
{
return rate_policy_access::
available_write_bytes(impl_->policy());
if (isRead)
return impl_->read;
else
return impl_->write;
}
std::size_t
available_bytes()
{
return available_bytes(is_read{});
}
void
transfer_bytes(std::size_t n, std::true_type)
{
rate_policy_access::
transfer_read_bytes(impl_->policy(), n);
}
void
transfer_bytes(std::size_t n, std::false_type)
{
rate_policy_access::
transfer_write_bytes(impl_->policy(), n);
if (isRead)
return rate_policy_access::
available_read_bytes(impl_->policy());
else
return rate_policy_access::
available_write_bytes(impl_->policy());
}
void
transfer_bytes(std::size_t n)
{
transfer_bytes(n, is_read{});
if (isRead)
rate_policy_access::
transfer_read_bytes(impl_->policy(), n);
else
rate_policy_access::
transfer_write_bytes(impl_->policy(), n);
}
void