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Leopard Reference: Cocoa
Process management in Mac OS X facilitates the scheduling and execution of programs at runtime. The Cocoa environment provides programming interfaces for interacting with the operating system. Using these, developers can get process and host information, launch subprocesses, and pipe data between processes.

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NSCondition Class Reference (HTML) (PDF)
Describes a pthread-style condition variable and associated mutex lock.
2008-09-09
NSConditionLock Class Reference (HTML) (PDF)
Describes an integer-based condition for use in thread locking.
2007-01-15
NSDistributedLock Class Reference (HTML) (PDF)
Describes a mutex lock that spans multiple processes.
2007-01-22
NSHost Class Reference (HTML) (PDF)
Describes a representation of a network host.
2007-03-24
NSLock Class Reference (HTML) (PDF)
Describes a mutex-based lock.
2008-02-08
NSLocking Protocol Reference (HTML) (PDF)
Describes the interface for supporting mutex and condition locks.
2007-01-22
NSOperation Class Reference (HTML) (PDF)
Describes an encapsulated, single-shot task.
2008-11-19
NSOperationQueue Class Reference (HTML) (PDF)
Describes an object that manages a set of prioritized operations.
2008-11-19
NSProcessInfo Class Reference (HTML) (PDF)
Describes the current process.
2007-03-26
NSRecursiveLock Class Reference (HTML) (PDF)
Describes a lock that can be acquired multiple times by one thread without causing a deadlock.
2007-04-30
NSTask Class Reference (HTML) (PDF)
Describes a task that runs as a subprocess.
2007-01-31
NSThread Class Reference (HTML) (PDF)
Describes a thread of execution.
2007-12-11