Asp Forum - Another fast concurrent FIFO Queue and a fast concurrent priority FIFO Queue version 1.0

Ramine

11/23/2014 2:32:00 AM

Hello,

Another fast concurrent FIFO Queue and a fast concurrent priority FIFO
Queue version 1.0, they are waitfree on the push() side and lockfree on
the pop() side.

Authors: Based on Dmitry Vyukov concurrent FIFO queue

Description:

A fast concurrent FIFO queue and a fast concurrent priority FIFO queue
that satisfy many requirements: they have more parallelism than the two
locks algorithm, they are waitfree and starvation-free and FIFO fair on
the push() side and they are lockfree on the pop() side, and they
minimizes efficiently the cache-coherence traffic and they are energy
efficient on the pop() side when you set the wait parameter to true in
the construtor: when there is no items in the queue they will not
spin-wait , but they will block wait on my SemaMonitor, and when the
wait parameter of the constructor is set to false they uses only an
atomic increment on the push() side and a CAS on the pop() side, so they
are fast.

You have 3 options for setting the kind of locks, just look inside
defines.inc , if you want to set it for my scalable lock called MLock
just uncomment the option MLock inside defines.inc, if you want to set
it for Ticket Spinlock just uncomment the option TicketSpinlock ,If you
want to set it for Spinlock just uncomment the option Spinlock, the
Spinlock scaled better even if the number of threads are greater than
the number of cores, the TicketSpinlock and MLock don't scale well when
the number of threads are greater than the number of cores, the Ticket
Spinlock and scalable MLock are optimal when the number of threads are
equal to the number of cores, and when the wait parameter of the
constructor is false it scales even if the number of threads are greater
than the number of cores.

The size of the queue must be passed to the constructor and it must be a
power of 2.

You an download it from:

https://sites.google.com/site/aminer68/conccurent-fi...

Language: FPC Pascal v2.2.0+ / Delphi 7+: http://www.freep...

Operating Systems: Windows, Mac OSX , Linux...

Required FPC switches: -O3 -Sd -dFPC -dFreePascal

-Sd for delphi mode....

Required Delphi switches: -$H+ -DDelphi

{$DEFINE CPU32} and {$DEFINE Windows32} for 32 bit systems

{$DEFINE CPU64} and {$DEFINE Windows64} for 64 bit systems

Thank you,
Amine Moulay Ramdane.

1 Answer

Tom

11/24/2014 2:13:00 PM

the only one who responds to or comments on your posts is yourself. Does this tell you anything about the usefulness of your posts? or work?

On Sat, 22 Nov 2014 18:31:33 -0800
Ramine <ramine@1.1> wrote:

comp.programming.threads

Another fast concurrent FIFO Queue and a fast concurrent priority FIFO Queue version 1.0

Ramine

Tom

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