HP-UX MultiProcessing: White Paper

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Technical documentation


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HP Part Number: 5965-4643

Edition: Version 1.3

Published: Last modified April 7, 1997

© Copyright 1997, Hewlett-Packard Company.

List of Figures

1-1 A sample MP system showing three processors
1-2 PDC code selects monarch processor
1-3 Scope of information in MP data structures
1-4 Synchronization
1-5 Conceptual view of a spinlock
1-6 Hashed spinlocks point to singular spinlock data structures
1-7 Conceptual view of a semaphore
1-8 Alpha semaphore vs-a-vs spinlock and kthreads
1-9 Beta semaphore structures

List of Tables

1-1 MP information accessed through mpinfo_t
1-2 Counters tracked in struct mpcntrs
1-3 Spinlocks allocated when kernel is initialized
1-4 Elements of the spinlock data structure lock_t
1-5 Key elements in hash_sl_pool structure
1-6 Modules for spinlock arbitration
1-7 Differences between mutual-exclusion and synchronization semaphores
1-8 A Sampling of semaphores
1-9 Principal elements of struct sema (sema_t)
1-10 Acquisition and release of an alpha semaphore
1-11 Bind and unbind an alpha semaphore
1-12 Tests for ownership of an alpha semaphore
1-13 Tests for whether to switch thread of control
1-14 Interface routines used for beta semaphore operations
1-15 elements in struct b_sema
1-16 elements in struct bh_sema_t
1-17 Sample deadlock situation