<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>Memory Allocation</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.2.15 -->
<center>
<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="modules.html">Modules</a> <a class="qindex" href="annotated.html">Data Structures</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Data Fields</a> <a class="qindex" href="pages.html">Related Pages</a> </center>
<hr><h1>Memory Allocation<br>
<small>
[<a class="el" href="group__DBus.html">D-BUS message system public API</a>]</small>
</h1><a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>(), <a class="el" href="group__DBusMemory.html#a3">dbus_free</a>(), etc.
<a href="#_details">More...</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td colspan=2><br><h2>Defines</h2></td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a6">dbus_new</a>(type, count) ((type*)dbus_malloc (sizeof (type) * (count)));</td></tr>
<tr><td> </td><td><font size=-1><em>Safe macro for using <a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>().</em> <a href="#a6">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a7">dbus_new0</a>(type, count) ((type*)dbus_malloc0 (sizeof (type) * (count)));</td></tr>
<tr><td> </td><td><font size=-1><em>Safe macro for using <a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a>().</em> <a href="#a7">More...</a><em></em></font><br><br></td></tr>
<tr><td colspan=2><br><h2>Typedefs</h2></td></tr>
<tr><td nowrap align=right valign=top>typedef void(* </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a8">DBusFreeFunction</a> )(void *memory)</td></tr>
<tr><td> </td><td><font size=-1><em>The type of a function which frees a block of memory.</em> <a href="#a8">More...</a><em></em></font><br><br></td></tr>
<tr><td colspan=2><br><h2>Functions</h2></td></tr>
<tr><td nowrap align=right valign=top>void * </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a> (size_t bytes)</td></tr>
<tr><td> </td><td><font size=-1><em>Allocates the given number of bytes, as with standard malloc().</em> <a href="#a0">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>void * </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a> (size_t bytes)</td></tr>
<tr><td> </td><td><font size=-1><em>Allocates the given number of bytes, as with standard malloc(), but all bytes are initialized to zero as with calloc().</em> <a href="#a1">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>void * </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a2">dbus_realloc</a> (void *memory, size_t bytes)</td></tr>
<tr><td> </td><td><font size=-1><em>Resizes a block of memory previously allocated by <a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>() or <a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a>().</em> <a href="#a2">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a3">dbus_free</a> (void *memory)</td></tr>
<tr><td> </td><td><font size=-1><em>Frees a block of memory previously allocated by <a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>() or <a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a>().</em> <a href="#a3">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a4">dbus_free_string_array</a> (char **str_array)</td></tr>
<tr><td> </td><td><font size=-1><em>Frees a <a class="el" href="group__DBusMacros.html#a4">NULL</a>-terminated array of strings.</em> <a href="#a4">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="group__DBusMemory.html#a5">dbus_shutdown</a> (void)</td></tr>
<tr><td> </td><td><font size=-1><em>The D-BUS library keeps some internal global variables, for example to cache the username of the current process.</em> <a href="#a5">More...</a><em></em></font><br><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>(), <a class="el" href="group__DBusMemory.html#a3">dbus_free</a>(), etc.
<p>
<p>
Functions and macros related to allocating and releasing blocks of memory. <hr><h2>Define Documentation</h2>
<a name="a6" doxytag="dbus-memory.h::dbus_new"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define dbus_new</td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">type, <tr>
<td></td>
<td></td>
<td class="md" nowrap>count </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap> ((type*)dbus_malloc (sizeof (type) * (count)));
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Safe macro for using <a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>().
<p>
Accepts the type to allocate and the number of type instances to allocate as arguments, and returns a memory block cast to the desired type, instead of as a void*.<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>type</em> </td><td>
type name to allocate </td></tr>
<tr><td valign=top><em>count</em> </td><td>
number of instances in the allocated array </td></tr>
</table>
</dl><dl compact><dt><b>
Returns: </b><dd>
the new memory block or <a class="el" href="group__DBusMacros.html#a4">NULL</a> on failure </dl>
<p>
Definition at line <a class="el" href="dbus-memory_8h-source.html#l00041">41</a> of file <a class="el" href="dbus-memory_8h-source.html">dbus-memory.h</a>. </td>
</tr>
</table>
<a name="a7" doxytag="dbus-memory.h::dbus_new0"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define dbus_new0</td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">type, <tr>
<td></td>
<td></td>
<td class="md" nowrap>count </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap> ((type*)dbus_malloc0 (sizeof (type) * (count)));
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Safe macro for using <a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a>().
<p>
Accepts the type to allocate and the number of type instances to allocate as arguments, and returns a memory block cast to the desired type, instead of as a void*. The allocated array is initialized to all-bits-zero.<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>type</em> </td><td>
type name to allocate </td></tr>
<tr><td valign=top><em>count</em> </td><td>
number of instances in the allocated array </td></tr>
</table>
</dl><dl compact><dt><b>
Returns: </b><dd>
the new memory block or <a class="el" href="group__DBusMacros.html#a4">NULL</a> on failure </dl>
<p>
Definition at line <a class="el" href="dbus-memory_8h-source.html#l00042">42</a> of file <a class="el" href="dbus-memory_8h-source.html">dbus-memory.h</a>. </td>
</tr>
</table>
<hr><h2>Typedef Documentation</h2>
<a name="a8" doxytag="dbus-memory.h::DBusFreeFunction"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> DBusFreeFunction
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
The type of a function which frees a block of memory.
<p>
<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>memory</em> </td><td>
the memory to free </td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="dbus-memory_8h-source.html#l00046">46</a> of file <a class="el" href="dbus-memory_8h-source.html">dbus-memory.h</a>. </td>
</tr>
</table>
<hr><h2>Function Documentation</h2>
<a name="a3" doxytag="dbus-memory.c::dbus_free"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void dbus_free </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void * </td>
<td class="mdname1" valign="top" nowrap> <em>memory</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Frees a block of memory previously allocated by <a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>() or <a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a>().
<p>
If passed <a class="el" href="group__DBusMacros.html#a4">NULL</a>, does nothing.<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>memory</em> </td><td>
block to be freed </td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="dbus-memory_8c-source.html#l00605">605</a> of file <a class="el" href="dbus-memory_8c-source.html">dbus-memory.c</a>. </td>
</tr>
</table>
<a name="a4" doxytag="dbus-memory.c::dbus_free_string_array"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void dbus_free_string_array </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">char ** </td>
<td class="mdname1" valign="top" nowrap> <em>str_array</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Frees a <a class="el" href="group__DBusMacros.html#a4">NULL</a>-terminated array of strings.
<p>
If passed <a class="el" href="group__DBusMacros.html#a4">NULL</a>, does nothing.<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>str_array</em> </td><td>
the array to be freed </td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="dbus-memory_8c-source.html#l00643">643</a> of file <a class="el" href="dbus-memory_8c-source.html">dbus-memory.c</a>. </td>
</tr>
</table>
<a name="a0" doxytag="dbus-memory.c::dbus_malloc"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void* dbus_malloc </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname1" valign="top" nowrap> <em>bytes</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Allocates the given number of bytes, as with standard malloc().
<p>
Guaranteed to return <a class="el" href="group__DBusMacros.html#a4">NULL</a> if bytes is zero on all platforms. Returns <a class="el" href="group__DBusMacros.html#a4">NULL</a> if the allocation fails. The memory must be released with <a class="el" href="group__DBusMemory.html#a3">dbus_free</a>().<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>bytes</em> </td><td>
number of bytes to allocate </td></tr>
</table>
</dl><dl compact><dt><b>
Returns: </b><dd>
allocated memory, or <a class="el" href="group__DBusMacros.html#a4">NULL</a> if the allocation fails. </dl>
<p>
Definition at line <a class="el" href="dbus-memory_8c-source.html#l00430">430</a> of file <a class="el" href="dbus-memory_8c-source.html">dbus-memory.c</a>. </td>
</tr>
</table>
<a name="a1" doxytag="dbus-memory.c::dbus_malloc0"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void* dbus_malloc0 </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname1" valign="top" nowrap> <em>bytes</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Allocates the given number of bytes, as with standard malloc(), but all bytes are initialized to zero as with calloc().
<p>
Guaranteed to return <a class="el" href="group__DBusMacros.html#a4">NULL</a> if bytes is zero on all platforms. Returns <a class="el" href="group__DBusMacros.html#a4">NULL</a> if the allocation fails. The memory must be released with <a class="el" href="group__DBusMemory.html#a3">dbus_free</a>().<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>bytes</em> </td><td>
number of bytes to allocate </td></tr>
</table>
</dl><dl compact><dt><b>
Returns: </b><dd>
allocated memory, or <a class="el" href="group__DBusMacros.html#a4">NULL</a> if the allocation fails. </dl>
<p>
Definition at line <a class="el" href="dbus-memory_8c-source.html#l00481">481</a> of file <a class="el" href="dbus-memory_8c-source.html">dbus-memory.c</a>. </td>
</tr>
</table>
<a name="a2" doxytag="dbus-memory.c::dbus_realloc"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void* dbus_realloc </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void * </td>
<td class="mdname" nowrap> <em>memory</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>size_t </td>
<td class="mdname" nowrap> <em>bytes</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Resizes a block of memory previously allocated by <a class="el" href="group__DBusMemory.html#a0">dbus_malloc</a>() or <a class="el" href="group__DBusMemory.html#a1">dbus_malloc0</a>().
<p>
Guaranteed to free the memory and return <a class="el" href="group__DBusMacros.html#a4">NULL</a> if bytes is zero on all platforms. Returns <a class="el" href="group__DBusMacros.html#a4">NULL</a> if the resize fails. If the resize fails, the memory is not freed.<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>memory</em> </td><td>
block to be resized </td></tr>
<tr><td valign=top><em>bytes</em> </td><td>
new size of the memory block </td></tr>
</table>
</dl><dl compact><dt><b>
Returns: </b><dd>
allocated memory, or <a class="el" href="group__DBusMacros.html#a4">NULL</a> if the resize fails. </dl>
<p>
Definition at line <a class="el" href="dbus-memory_8c-source.html#l00532">532</a> of file <a class="el" href="dbus-memory_8c-source.html">dbus-memory.c</a>. </td>
</tr>
</table>
<a name="a5" doxytag="dbus-memory.c::dbus_shutdown"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void dbus_shutdown </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
The D-BUS library keeps some internal global variables, for example to cache the username of the current process.
<p>
This function is used to free these global variables. It is really useful only for leak-checking cleanliness and the like. WARNING: this function is NOT thread safe, it must be called while NO other threads are using D-BUS. You cannot continue using D-BUS after calling this function, as it does things like free global mutexes created by <a class="el" href="group__DBusThreads.html#a12">dbus_threads_init</a>(). To use a D-BUS function after calling <a class="el" href="group__DBusMemory.html#a5">dbus_shutdown</a>(), you have to start over from scratch, e.g. calling <a class="el" href="group__DBusThreads.html#a12">dbus_threads_init</a>() again.
<p>
Definition at line <a class="el" href="dbus-memory_8c-source.html#l00749">749</a> of file <a class="el" href="dbus-memory_8c-source.html">dbus-memory.c</a>.
<p>
References <a class="el" href="dbus-memory_8c-source.html#l00689">ShutdownClosure::data</a>, <a class="el" href="dbus-memory_8c-source.html#l00688">ShutdownClosure::func</a>, and <a class="el" href="dbus-memory_8c-source.html#l00687">ShutdownClosure::next</a>. </td>
</tr>
</table>
<hr><address align="right"><small>Generated on Wed Jun 9 05:01:28 2004 for D-BUS by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0
width=110 height=53></a>1.2.15 </small></address>
</body>
</html>
distrib
>
Mandriva
>
2007.0
>
x86_64
>
media
>
main-release
>
by-pkgid
>
926d2d1e3111287cee1b0a4fad4fb4f6
>
files
>
188
