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19 Multiprocessing

19 Multiprocessing

LispWorks supports threads for running computations in parallel. The programming environment, for example, makes extensive use of this mechanism to create separate threads for the various tools.

On Microsoft Windows, Mac OS X, Linux, x86/x64 Solaris, FreeBSD and AIX, LispWorks multiprocessing uses native threads and supports Symmetric Multiprocessing (SMP). The implementation is referred to as "SMP LispWorks" where relevant.

On other platforms LispWorks uses a single native thread and implements user level threads. The implementation is referred to as "non-SMP LispWorks" where relevant.

In SMP LispWorks, Lisp processes (as reported by the Lisp function ps) are Operating System threads. These do not necessarily correspond to what system tools show you, for example in Microsoft Windows the Activity monitor shows OS processes, including exactly one for each running LispWorks image.

19.1 Introduction to processes 19.2 Processes basics 19.3 Atomicity and thread-safety of the LispWorks implementation 19.4 Locks 19.5 Modifying a hash table with multiprocessing 19.6 Process Waiting and communication between processes 19.7 Synchronization between threads 19.8 Killing a process, interrupts and blocking interrupts 19.9 Timers 19.10 Process properties 19.11 Other processes functions 19.12 Native threads and foreign code 19.13 Low level operations

LispWorks User Guide and Reference Manual - 20 Sep 2017


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