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Multithreaded Programming Guide Oracle Solaris 11.1 Information Library |
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Multithreaded Programming Guide Oracle Solaris 11.1 Information Library |
1. Covering Multithreading Basics
Mutual Exclusion Lock Attributes
Initializing a Mutex Attribute Object
pthread_mutexattr_init Return Values
Destroying a Mutex Attribute Object
pthread_mutexattr_destroy Syntax
pthread_mutexattr_destroy Return Values
pthread_mutexattr_setpshared Syntax
pthread_mutexattr_setpshared Return Values
pthread_mutexattr_getpshared Syntax
pthread_mutexattr_getpshared Return Values
Setting the Mutex Type Attribute
pthread_mutexattr_settype Syntax
pthread_mutexattr_settype Return Values
Getting the Mutex Type Attribute
pthread_mutexattr_gettype Syntax
pthread_mutexattr_gettype Return Values
Setting the Mutex Attribute's Protocol
pthread_mutexattr_setprotocol Syntax
pthread_mutexattr_setprotocol Return Values
Getting the Mutex Attribute's Protocol
pthread_mutexattr_getprotocol Syntax
pthread_mutexattr_getprotocol Return Values
Setting the Mutex Attribute's Priority Ceiling
pthread_mutexattr_setprioceiling Syntax
pthread_mutexattr_setprioceiling Return Values
Getting the Mutex Attribute's Priority Ceiling
pthread_mutexattr_getprioceiling Syntax
pthread_mutexattr_getprioceiling Return Values
Setting the Mutex's Priority Ceiling
pthread_mutex_setprioceiling Syntax
pthread_mutex_setprioceiling Return Values
Getting the Mutex's Priority Ceiling
pthread_mutex_getprioceiling Syntax
pthread_mutex_getprioceiling Return Values
Setting the Mutex's Robust Attribute
pthread_mutexattr_setrobust_np Syntax
pthread_mutexattr_setrobust_np Return Values
Getting the Mutex's Robust Attribute
pthread_mutexattr_getrobust_np Syntax
pthread_mutexattr_getrobust_np Return Values
pthread_mutex_init Return Values
pthread_mutex_consistent_np Syntax
pthread_mutex_consistent_np Return Values
pthread_mutex_lock Return Values
pthread_mutex_unlock Return Values
Locking a Mutex Without Blocking
pthread_mutex_trylock Return Values
Locking a Mutex Before a Specified Absolute Time
pthread_mutex_timedlock() Syntax
pthread_mutex_timedlock() Return Values
Locking a Mutex Within a Specified Time Interval
pthread_mutex_reltimedlock_np() Syntax
pthread_mutex_reltimedlock_np() Return Values
pthread_mutex_destroy Return Values
Code Examples of Mutex Locking
Examples of Using Lock Hierarchies
Examples of Using Nested Locking With a Singly-Linked List
Example of Nested Locking With a Circularly-Linked List
pthread_spin_init() Return Values
pthread_spin_lock() Return Values
Acquiring a Non-Blocking Spin Lock
pthread_spin_trylock() Return Values
pthread_spin_unlock() Return Values
pthread_spin_destroy() Return Values
Initializing a Condition Variable Attribute
pthread_condattr_init Return Values
Removing a Condition Variable Attribute
pthread_condattr_destroy Syntax
pthread_condattr_destroy Return Values
Setting the Scope of a Condition Variable
pthread_condattr_setpshared Syntax
pthread_condattr_setpshared Return Values
Getting the Scope of a Condition Variable
pthread_condattr_getpshared Syntax
pthread_condattr_getpshared Return Values
Setting the Clock Selection Condition Variable
pthread_condattr_setclock Syntax
pthread_condattr_setclock Returns
Getting the Clock Selection Condition Variable
pthread_condattr_getclock Syntax
pthread_condattr_getclock Returns
Initializing a Condition Variable
pthread_cond_init Return Values
Blocking on a Condition Variable
pthread_cond_wait Return Values
pthread_cond_signal Return Values
Blocking Until a Specified Time
pthread_cond_timedwait Return Values
Blocking For a Specified Interval
pthread_cond_reltimedwait_np Syntax
pthread_cond_reltimedwait_np Return Values
pthread_cond_broadcast Return Values
Destroying the Condition Variable State
pthread_cond_destroy Return Values
Synchronization With Semaphores
Initializing Semaphores With Intraprocess Scope
Initializing Semaphores With Interprocess Scope
Decrementing a Semaphore Count
Destroying the Semaphore State
Producer and Consumer Problem Using Semaphores
Initializing a Read-Write Lock Attribute
pthread_rwlockattr_init Syntax
pthread_rwlockattr_init Return Values
Destroying a Read-Write Lock Attribute
pthread_rwlockattr_destroy Syntax
pthread_rwlockattr_destroy Return Values
Setting a Read-Write Lock Attribute
pthread_rwlockattr_setpshared Syntax
pthread_rwlockattr_setpshared Return Values
Getting a Read-Write Lock Attribute
pthread_rwlockattr_getpshared Syntax
pthread_rwlockattr_getpshared Return Values
Initializing a Read-Write Lock
pthread_rwlock_init Return Values
Acquiring the Read Lock on Read-Write Lock
pthread_rwlock_rdlock Return Values
Acquiring a Read Lock on a Read-Write Lock Before a Specified Absolute Time
pthread_rwlock_timedrdlock Syntax
pthread_rwlock_timedrdlock Return Values
Acquiring a Non-Blocking Read Lock on a Read-Write Lock
pthread_rwlock_tryrdlock Syntax
pthread_rwlock_tryrdlock Return Values
Acquiring the Write Lock on a Read-Write Lock
pthread_rwlock_wrlock Return Values
Acquiring a Non-blocking Write Lock on a Read-Write Lock
pthread_rwlock_trywrlock Syntax
pthread_rwlock_trywrlock Return Values
Acquiring a Write Lock on a Read-Write Lock Before a Specified Absolute Time
pthread_rwlock_timedwrlock Syntax
pthread_rwlock_timedwrlock Returns
pthread_rwlock_unlock Return Values
pthread_rwlock_destroy Return Values
Initializing a Synchronization Barrier
pthread_barrier_init() Return Values
Waiting for Threads to Synchronize at a Barrier
pthread_barrier_wait() Return Values
Destroying a Synchronization Barrier
pthread_barrier_destroy Syntax
pthread_barrier_destroy Return Values
Initializing a Barrier Attributes Object
pthread_barrierattr_init() Syntax
pthread_barrierattr_init() Return Values
Setting a Barrier Process-Shared Attribute
pthread_barrierattr_setpshared() Syntax
pthread_barrierattr_setpshared() Return Values
Getting a Barrier Process-Shared Attribute
pthread_barrierattr_getpshared() Syntax
pthread_barrierattr_getpshared() Return Values
Destroying a Barrier Attributes Object
pthread_barrierattr_destroy() Syntax
pthread_barrierattr_destroy() Return Values
Synchronization Across Process Boundaries
Producer and Consumer Problem Example
5. Programming With the Oracle Solaris Software
6. Programming With Oracle Solaris Threads
This chapter describes the synchronization types that are available with threads. The chapter also discusses when and how to use synchronization.
Synchronization objects are variables in memory that you access just like data. Threads in different processes can communicate with each other through synchronization objects that are placed in threads-controlled shared memory. The threads can communicate with each other even though the threads in different processes are generally invisible to each other.
Synchronization objects can also be placed in files. The synchronization objects can have lifetimes beyond the life of the creating process.
The available types of synchronization objects are
Mutex locks
Condition variables
Read-Write locks
Semaphores
Situations that can benefit from the use of synchronization include the following:
Synchronization is the only way to ensure consistency of shared data.
Threads in two or more processes can use a single synchronization object jointly. Because reinitializing a synchronization object sets the object to the unlocked state, the synchronization object should be initialized by only one of the cooperating processes.
Synchronization can ensure the safety of mutable data.
A process can map a file and direct a thread in this process get a record's lock. Once the lock is acquired, any thread in any process mapping the file attempting to acquire the lock is blocked until the lock is released.
Accessing a single primitive variable, such as an integer, can use more than one memory cycle for a single memory load. More than one memory cycle is used where the integer is not aligned to the bus data width or is larger than the data width. While integer misalignment cannot happen on the SPARC architecture, portable programs cannot rely on the proper alignment.
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