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Interlock for mailbox.

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ADAM David Alan Martin
2023-12-12 17:37:03 -05:00
parent bf207244b6
commit 94596d0d7d
3 changed files with 146 additions and 16 deletions
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31
Atomic/Mailbox.h
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@ -87,8 +87,7 @@ namespace Alepha::Hydrogen::Atomic ::detail:: Mailbox_m
const std::size_t boxLimit;
Alepha::mutex access;
Alepha::condition_variable ready;
bool suspended= false;
Alepha::Interlock interlockPoint;
std::size_t weight= 0;
std::vector< Item > preparing;
@ -104,25 +103,26 @@ namespace Alepha::Hydrogen::Atomic ::detail:: Mailbox_m
void
awaken( Lock &lock )
{
filled.clear();
weight= 0;
using std::swap;
swap( filled, preparing );
pos= begin( filled );
preparing.clear();
suspended= false;
weight= 0;
ready.notify_one();
}
template< typename Lock >
void
interlock( Lock &lock )
interlock( Alepha::unique_lock< Alepha::mutex > &lock )
{
if( C::debugInterlock ) error() << "Interlock entered." << std::endl;
if( suspended ) awaken( lock );
else
{
suspended= true;
while( suspended ) ready.wait( lock );
}
interlockPoint.checkpoint( lock, [&]{ awaken( lock ); } );
}
void
checkpoint( Alepha::unique_lock< Alepha::mutex > &lock )
{
if( C::debugInterlock ) error() << "Checkpoint entered." << std::endl;
interlockPoint.checkpoint( lock, [&]{ awaken( lock ); } );
}
[[noreturn]] void
@ -222,8 +222,7 @@ namespace Alepha::Hydrogen::Atomic ::detail:: Mailbox_m
Alepha::unique_lock lock( access );
assertion( not finished );
finished= true;
if( suspended ) interlock( lock );
else suspended= true;
checkpoint( lock );
}
};
}