<s>
The	O
Naimi	O
–	O
Trehel	O
algorithm	O
is	O
an	O
algorithm	O
for	O
achieving	O
mutual	B-Operating_System
exclusion	I-Operating_System
in	O
a	O
distributed	B-Architecture
system	I-Architecture
.	O
</s>
<s>
Unlike	O
Lamport	B-Operating_System
's	I-Operating_System
distributed	I-Operating_System
mutual	I-Operating_System
exclusion	I-Operating_System
algorithm	I-Operating_System
and	O
its	O
related	O
version	O
,	O
this	O
algorithm	O
does	O
not	O
use	O
logical	B-Operating_System
clocks	I-Operating_System
.	O
</s>
<s>
When	O
a	O
process	O
invokes	O
a	O
critical	B-Operating_System
section	I-Operating_System
,	O
it	O
sends	O
a	O
request	O
to	O
a	O
queue	B-Device
at	O
a	O
particular	O
processor	O
which	O
is	O
specified	O
by	O
a	O
path	O
built	O
by	O
the	O
algorithm	O
as	O
it	O
runs	O
.	O
</s>
