Rendezvous is a

data synchronization Data synchronization is the process of establishing consistency between source and target data stores, and the continuous harmonization of the data over time. It is fundamental to a wide variety of applications, including file synchronization and m ...

mechanism in

Plan 9 from Bell Labs Plan 9 from Bell Labs is a distributed operating system which originated from the Computing Science Research Center (CSRC) at Bell Labs in the mid-1980s and built on UNIX concepts first developed there in the late 1960s. Since 2000, Plan 9 has be ...

. It is a

system call In computing, a system call (commonly abbreviated to syscall) is the programmatic way in which a computer program requests a service from the operating system on which it is executed. This may include hardware-related services (for example, acc ...

that allows two processes to exchange a single datum while synchronizing. The rendezvous call takes a ''tag'' and a ''value'' as its arguments. The tag is typically an address in memory shared by both processes. Calling rendezvous causes a process to sleep until a second rendezvous call with a matching tag occurs. Then, the values are exchanged and both processes are awakened. More complex synchronization mechanisms can be created from this primitive operation. See also

mutual exclusion In computer science, mutual exclusion is a property of concurrency control, which is instituted for the purpose of preventing race conditions. It is the requirement that one thread of execution never enters a critical section while a concurrent ...

External links

Process Sleep and Wakeup on a Shared-memory Multiprocessor
by

Rob Pike Robert "Rob" Pike (born 1956) is a Canadian programmer and author. He is best known for his work on the Go programming language and at Bell Labs, where he was a member of the Unix team and was involved in the creation of the Plan 9 from Bell La ...

Dave Presotto Dave may refer to: Film, television, and theater * ''Dave'' (film), a 1993 film starring Kevin Kline and Sigourney Weaver * ''Dave'' (musical), a 2018 stage musical adaptation of the film * Dave (TV channel), a digital television channel in the ...

Ken Thompson Kenneth Lane Thompson (born February 4, 1943) is an American pioneer of computer science. Thompson worked at Bell Labs for most of his career where he designed and implemented the original Unix operating system. He also invented the B programmi ...

and

Gerard Holzmann Gerard J. Holzmann (born 1951) is a Dutch-American computer scientist and researcher at Bell Labs and NASA, best known as the developer of the SPIN model checker. Biography Holzmann was born in Amsterdam, Netherlands and received an Engineer' ...

. Plan 9 from Bell Labs Parallel computing Inter-process communication {{operating-system-stub