2 * Copyright 2007-2010 Haiku, Inc. All rights reserved.
3 * Distributed under the terms of the MIT License.
6 * Nicolas de Leon, insdel@haqr.net
7 * Niels Sascha Reedijk, niels.reedijk@gmail.com
12 \page support_intro Introduction to the Support Kit
14 The Support Kit provides a handy set of classes that you can use in your
15 applications. These classes provide:
16 - \b Thread \b Safety. Haiku can execute multiple threads of an application
17 in parallel, letting certain parts of an application continue when one part
18 is stalled, as well as letting an application process multiple pieces of
19 data at the same time on multicore or multiprocessor systems. However,
20 there are times when multiple threads desire to work on the same piece of
21 data at the same time, potentially causing a conflict where variables or
22 pointers are changed by one thread causing another to execute incorrectly.
23 To prevent this, Haiku implements a \"locking\" mechanism, allowing one
24 thread to \"lock out\" other threads from executing code that might modify
26 - \b Archiving \b and \b IO. These classes allow a programmer to convert
27 objects into a form that can more easily be transferred to other
28 applications or stored to disk, as well as performing basic input and
30 - \b Memory \b Allocation. This class allows a programmer to hand off some of
31 the duties of memory accounting and management.
32 - \b Common \b Datatypes. To avoid unnecessary duplication of code and to
33 make life easier for programmers, Haiku includes classes that handle
34 management of ordered lists and strings.
36 There are also a number of utility functions to time actions, play system
37 alert sounds, compare strings, and atomically manipulate integers. Have a
38 look at the overview, or go straight to the complete
39 \link support list of components \endlink of this kit.
43 - BLocker provides a semaphore-like locking mechanism allowing for
45 - BAutolock provides a simple method of automatically removing a lock
47 - \ref TLS.h "Thread Local Storage" allows a global variable\'s content to
48 be sensitive to thread context.
50 - BArchivable provides an interface for \"archiving\" objects so that they
51 may be sent to other applications where an identical copy will be
53 - BArchiver simplifies archiving of BArchivable hierarchies.
54 - BUnarchiver simplifies unarchiving hierarchies that have been archived
56 - BFlattenable provides an interface for \"flattening\" objects so that
57 they may be easily stored to disk.
58 - BDataIO provides an interface for generalized read/write streams.
59 - BPositionIO extends BDataIO to allow seeking within the data.
60 - BBufferIO creates a buffer and attaches it to a BPositionIO stream,
61 allowing for reduced load on the underlying stream.
62 - BMemoryIO allows operation on an already-existing buffer.
63 - BMallocIO creates and allows operation on a buffer.
65 - BBlockCache allows an application to allocate a \"pool\" of memory blocks
66 that the application can fetch and dispose of as it pleases, letting the
67 application make only a few large memory allocations, instead of many
68 expensive small allocations.
70 - BList allows simple ordered lists and provides common access,
71 modification, and comparison functions.
72 - BString allows strings and provides common access, modification, and
74 - BStopWatch allows an application to measure the time an action takes.
75 - \ref support_globals "Global functions"
76 - \ref TypeConstants.h "Common types and constants"
77 - Error codes for all kits
81 // Short listing of documents that belong to this module so that people can
82 // find these from the module overview.
83 // This should become standardized in Doxygen though. There is an item on
84 // the todo list on this.
90 For a better overview, have a look at \ref support_intro .