2021-03-19 13:49:11 +01:00
|
|
|
<?xml version="1.0" encoding="utf-8"?>
|
|
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
|
|
|
|
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
|
|
|
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
|
|
|
|
<head>
|
2021-06-22 23:34:25 +02:00
|
|
|
<!-- 2021-06-22 Tue 21:34 -->
|
2021-03-19 13:49:11 +01:00
|
|
|
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
|
|
|
|
<meta name="viewport" content="width=device-width, initial-scale=1" />
|
|
|
|
<title>Memory management</title>
|
|
|
|
<meta name="generator" content="Org mode" />
|
2021-04-30 01:35:52 +02:00
|
|
|
<meta name="author" content="TREX CoE" />
|
2021-03-19 13:49:11 +01:00
|
|
|
<style type="text/css">
|
|
|
|
<!--/*--><![CDATA[/*><!--*/
|
|
|
|
.title { text-align: center;
|
|
|
|
margin-bottom: .2em; }
|
|
|
|
.subtitle { text-align: center;
|
|
|
|
font-size: medium;
|
|
|
|
font-weight: bold;
|
|
|
|
margin-top:0; }
|
|
|
|
.todo { font-family: monospace; color: red; }
|
|
|
|
.done { font-family: monospace; color: green; }
|
|
|
|
.priority { font-family: monospace; color: orange; }
|
|
|
|
.tag { background-color: #eee; font-family: monospace;
|
|
|
|
padding: 2px; font-size: 80%; font-weight: normal; }
|
|
|
|
.timestamp { color: #bebebe; }
|
|
|
|
.timestamp-kwd { color: #5f9ea0; }
|
|
|
|
.org-right { margin-left: auto; margin-right: 0px; text-align: right; }
|
|
|
|
.org-left { margin-left: 0px; margin-right: auto; text-align: left; }
|
|
|
|
.org-center { margin-left: auto; margin-right: auto; text-align: center; }
|
|
|
|
.underline { text-decoration: underline; }
|
|
|
|
#postamble p, #preamble p { font-size: 90%; margin: .2em; }
|
|
|
|
p.verse { margin-left: 3%; }
|
|
|
|
pre {
|
|
|
|
border: 1px solid #ccc;
|
|
|
|
box-shadow: 3px 3px 3px #eee;
|
|
|
|
padding: 8pt;
|
|
|
|
font-family: monospace;
|
|
|
|
overflow: auto;
|
|
|
|
margin: 1.2em;
|
|
|
|
}
|
|
|
|
pre.src {
|
|
|
|
position: relative;
|
|
|
|
overflow: visible;
|
|
|
|
padding-top: 1.2em;
|
|
|
|
}
|
|
|
|
pre.src:before {
|
|
|
|
display: none;
|
|
|
|
position: absolute;
|
|
|
|
background-color: white;
|
|
|
|
top: -10px;
|
|
|
|
right: 10px;
|
|
|
|
padding: 3px;
|
|
|
|
border: 1px solid black;
|
|
|
|
}
|
|
|
|
pre.src:hover:before { display: inline;}
|
|
|
|
/* Languages per Org manual */
|
|
|
|
pre.src-asymptote:before { content: 'Asymptote'; }
|
|
|
|
pre.src-awk:before { content: 'Awk'; }
|
|
|
|
pre.src-C:before { content: 'C'; }
|
|
|
|
/* pre.src-C++ doesn't work in CSS */
|
|
|
|
pre.src-clojure:before { content: 'Clojure'; }
|
|
|
|
pre.src-css:before { content: 'CSS'; }
|
|
|
|
pre.src-D:before { content: 'D'; }
|
|
|
|
pre.src-ditaa:before { content: 'ditaa'; }
|
|
|
|
pre.src-dot:before { content: 'Graphviz'; }
|
|
|
|
pre.src-calc:before { content: 'Emacs Calc'; }
|
|
|
|
pre.src-emacs-lisp:before { content: 'Emacs Lisp'; }
|
|
|
|
pre.src-fortran:before { content: 'Fortran'; }
|
|
|
|
pre.src-gnuplot:before { content: 'gnuplot'; }
|
|
|
|
pre.src-haskell:before { content: 'Haskell'; }
|
|
|
|
pre.src-hledger:before { content: 'hledger'; }
|
|
|
|
pre.src-java:before { content: 'Java'; }
|
|
|
|
pre.src-js:before { content: 'Javascript'; }
|
|
|
|
pre.src-latex:before { content: 'LaTeX'; }
|
|
|
|
pre.src-ledger:before { content: 'Ledger'; }
|
|
|
|
pre.src-lisp:before { content: 'Lisp'; }
|
|
|
|
pre.src-lilypond:before { content: 'Lilypond'; }
|
|
|
|
pre.src-lua:before { content: 'Lua'; }
|
|
|
|
pre.src-matlab:before { content: 'MATLAB'; }
|
|
|
|
pre.src-mscgen:before { content: 'Mscgen'; }
|
|
|
|
pre.src-ocaml:before { content: 'Objective Caml'; }
|
|
|
|
pre.src-octave:before { content: 'Octave'; }
|
|
|
|
pre.src-org:before { content: 'Org mode'; }
|
|
|
|
pre.src-oz:before { content: 'OZ'; }
|
|
|
|
pre.src-plantuml:before { content: 'Plantuml'; }
|
|
|
|
pre.src-processing:before { content: 'Processing.js'; }
|
|
|
|
pre.src-python:before { content: 'Python'; }
|
|
|
|
pre.src-R:before { content: 'R'; }
|
|
|
|
pre.src-ruby:before { content: 'Ruby'; }
|
|
|
|
pre.src-sass:before { content: 'Sass'; }
|
|
|
|
pre.src-scheme:before { content: 'Scheme'; }
|
|
|
|
pre.src-screen:before { content: 'Gnu Screen'; }
|
|
|
|
pre.src-sed:before { content: 'Sed'; }
|
|
|
|
pre.src-sh:before { content: 'shell'; }
|
|
|
|
pre.src-sql:before { content: 'SQL'; }
|
|
|
|
pre.src-sqlite:before { content: 'SQLite'; }
|
|
|
|
/* additional languages in org.el's org-babel-load-languages alist */
|
|
|
|
pre.src-forth:before { content: 'Forth'; }
|
|
|
|
pre.src-io:before { content: 'IO'; }
|
|
|
|
pre.src-J:before { content: 'J'; }
|
|
|
|
pre.src-makefile:before { content: 'Makefile'; }
|
|
|
|
pre.src-maxima:before { content: 'Maxima'; }
|
|
|
|
pre.src-perl:before { content: 'Perl'; }
|
|
|
|
pre.src-picolisp:before { content: 'Pico Lisp'; }
|
|
|
|
pre.src-scala:before { content: 'Scala'; }
|
|
|
|
pre.src-shell:before { content: 'Shell Script'; }
|
|
|
|
pre.src-ebnf2ps:before { content: 'ebfn2ps'; }
|
|
|
|
/* additional language identifiers per "defun org-babel-execute"
|
|
|
|
in ob-*.el */
|
|
|
|
pre.src-cpp:before { content: 'C++'; }
|
|
|
|
pre.src-abc:before { content: 'ABC'; }
|
|
|
|
pre.src-coq:before { content: 'Coq'; }
|
|
|
|
pre.src-groovy:before { content: 'Groovy'; }
|
|
|
|
/* additional language identifiers from org-babel-shell-names in
|
|
|
|
ob-shell.el: ob-shell is the only babel language using a lambda to put
|
|
|
|
the execution function name together. */
|
|
|
|
pre.src-bash:before { content: 'bash'; }
|
|
|
|
pre.src-csh:before { content: 'csh'; }
|
|
|
|
pre.src-ash:before { content: 'ash'; }
|
|
|
|
pre.src-dash:before { content: 'dash'; }
|
|
|
|
pre.src-ksh:before { content: 'ksh'; }
|
|
|
|
pre.src-mksh:before { content: 'mksh'; }
|
|
|
|
pre.src-posh:before { content: 'posh'; }
|
|
|
|
/* Additional Emacs modes also supported by the LaTeX listings package */
|
|
|
|
pre.src-ada:before { content: 'Ada'; }
|
|
|
|
pre.src-asm:before { content: 'Assembler'; }
|
|
|
|
pre.src-caml:before { content: 'Caml'; }
|
|
|
|
pre.src-delphi:before { content: 'Delphi'; }
|
|
|
|
pre.src-html:before { content: 'HTML'; }
|
|
|
|
pre.src-idl:before { content: 'IDL'; }
|
|
|
|
pre.src-mercury:before { content: 'Mercury'; }
|
|
|
|
pre.src-metapost:before { content: 'MetaPost'; }
|
|
|
|
pre.src-modula-2:before { content: 'Modula-2'; }
|
|
|
|
pre.src-pascal:before { content: 'Pascal'; }
|
|
|
|
pre.src-ps:before { content: 'PostScript'; }
|
|
|
|
pre.src-prolog:before { content: 'Prolog'; }
|
|
|
|
pre.src-simula:before { content: 'Simula'; }
|
|
|
|
pre.src-tcl:before { content: 'tcl'; }
|
|
|
|
pre.src-tex:before { content: 'TeX'; }
|
|
|
|
pre.src-plain-tex:before { content: 'Plain TeX'; }
|
|
|
|
pre.src-verilog:before { content: 'Verilog'; }
|
|
|
|
pre.src-vhdl:before { content: 'VHDL'; }
|
|
|
|
pre.src-xml:before { content: 'XML'; }
|
|
|
|
pre.src-nxml:before { content: 'XML'; }
|
|
|
|
/* add a generic configuration mode; LaTeX export needs an additional
|
|
|
|
(add-to-list 'org-latex-listings-langs '(conf " ")) in .emacs */
|
|
|
|
pre.src-conf:before { content: 'Configuration File'; }
|
|
|
|
|
|
|
|
table { border-collapse:collapse; }
|
|
|
|
caption.t-above { caption-side: top; }
|
|
|
|
caption.t-bottom { caption-side: bottom; }
|
|
|
|
td, th { vertical-align:top; }
|
|
|
|
th.org-right { text-align: center; }
|
|
|
|
th.org-left { text-align: center; }
|
|
|
|
th.org-center { text-align: center; }
|
|
|
|
td.org-right { text-align: right; }
|
|
|
|
td.org-left { text-align: left; }
|
|
|
|
td.org-center { text-align: center; }
|
|
|
|
dt { font-weight: bold; }
|
|
|
|
.footpara { display: inline; }
|
|
|
|
.footdef { margin-bottom: 1em; }
|
|
|
|
.figure { padding: 1em; }
|
|
|
|
.figure p { text-align: center; }
|
|
|
|
.inlinetask {
|
|
|
|
padding: 10px;
|
|
|
|
border: 2px solid gray;
|
|
|
|
margin: 10px;
|
|
|
|
background: #ffffcc;
|
|
|
|
}
|
|
|
|
#org-div-home-and-up
|
|
|
|
{ text-align: right; font-size: 70%; white-space: nowrap; }
|
|
|
|
textarea { overflow-x: auto; }
|
|
|
|
.linenr { font-size: smaller }
|
|
|
|
.code-highlighted { background-color: #ffff00; }
|
|
|
|
.org-info-js_info-navigation { border-style: none; }
|
|
|
|
#org-info-js_console-label
|
|
|
|
{ font-size: 10px; font-weight: bold; white-space: nowrap; }
|
|
|
|
.org-info-js_search-highlight
|
|
|
|
{ background-color: #ffff00; color: #000000; font-weight: bold; }
|
|
|
|
.org-svg { width: 90%; }
|
|
|
|
/*]]>*/-->
|
|
|
|
</style>
|
2021-04-30 01:35:52 +02:00
|
|
|
<link rel="stylesheet" title="Standard" href="qmckl.css" type="text/css" />
|
|
|
|
|
|
|
|
<script type="text/javascript" src="org-info.js">
|
|
|
|
/**
|
|
|
|
*
|
|
|
|
* @source: org-info.js
|
|
|
|
*
|
|
|
|
* @licstart The following is the entire license notice for the
|
|
|
|
* JavaScript code in org-info.js.
|
|
|
|
*
|
|
|
|
* Copyright (C) 2012-2019 Free Software Foundation, Inc.
|
|
|
|
*
|
|
|
|
*
|
|
|
|
* The JavaScript code in this tag is free software: you can
|
|
|
|
* redistribute it and/or modify it under the terms of the GNU
|
|
|
|
* General Public License (GNU GPL) as published by the Free Software
|
|
|
|
* Foundation, either version 3 of the License, or (at your option)
|
|
|
|
* any later version. The code is distributed WITHOUT ANY WARRANTY;
|
|
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
|
|
* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
|
|
|
|
*
|
|
|
|
* As additional permission under GNU GPL version 3 section 7, you
|
|
|
|
* may distribute non-source (e.g., minimized or compacted) forms of
|
|
|
|
* that code without the copy of the GNU GPL normally required by
|
|
|
|
* section 4, provided you include this license notice and a URL
|
|
|
|
* through which recipients can access the Corresponding Source.
|
|
|
|
*
|
|
|
|
* @licend The above is the entire license notice
|
|
|
|
* for the JavaScript code in org-info.js.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
</script>
|
|
|
|
|
|
|
|
<script type="text/javascript">
|
|
|
|
|
|
|
|
/*
|
|
|
|
@licstart The following is the entire license notice for the
|
|
|
|
JavaScript code in this tag.
|
|
|
|
|
|
|
|
Copyright (C) 2012-2019 Free Software Foundation, Inc.
|
|
|
|
|
|
|
|
The JavaScript code in this tag is free software: you can
|
|
|
|
redistribute it and/or modify it under the terms of the GNU
|
|
|
|
General Public License (GNU GPL) as published by the Free Software
|
|
|
|
Foundation, either version 3 of the License, or (at your option)
|
|
|
|
any later version. The code is distributed WITHOUT ANY WARRANTY;
|
|
|
|
without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
|
|
FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
|
|
|
|
|
|
|
|
As additional permission under GNU GPL version 3 section 7, you
|
|
|
|
may distribute non-source (e.g., minimized or compacted) forms of
|
|
|
|
that code without the copy of the GNU GPL normally required by
|
|
|
|
section 4, provided you include this license notice and a URL
|
|
|
|
through which recipients can access the Corresponding Source.
|
|
|
|
|
|
|
|
|
|
|
|
@licend The above is the entire license notice
|
|
|
|
for the JavaScript code in this tag.
|
|
|
|
*/
|
|
|
|
|
|
|
|
<!--/*--><![CDATA[/*><!--*/
|
|
|
|
org_html_manager.set("TOC_DEPTH", "4");
|
|
|
|
org_html_manager.set("LINK_HOME", "index.html");
|
|
|
|
org_html_manager.set("LINK_UP", "");
|
|
|
|
org_html_manager.set("LOCAL_TOC", "1");
|
|
|
|
org_html_manager.set("VIEW_BUTTONS", "0");
|
|
|
|
org_html_manager.set("MOUSE_HINT", "underline");
|
|
|
|
org_html_manager.set("FIXED_TOC", "0");
|
|
|
|
org_html_manager.set("TOC", "1");
|
|
|
|
org_html_manager.set("VIEW", "info");
|
|
|
|
org_html_manager.setup(); // activate after the parameters are set
|
|
|
|
/*]]>*///-->
|
|
|
|
</script>
|
2021-03-19 13:49:11 +01:00
|
|
|
<script type="text/javascript">
|
|
|
|
/*
|
|
|
|
@licstart The following is the entire license notice for the
|
|
|
|
JavaScript code in this tag.
|
|
|
|
|
|
|
|
Copyright (C) 2012-2019 Free Software Foundation, Inc.
|
|
|
|
|
|
|
|
The JavaScript code in this tag is free software: you can
|
|
|
|
redistribute it and/or modify it under the terms of the GNU
|
|
|
|
General Public License (GNU GPL) as published by the Free Software
|
|
|
|
Foundation, either version 3 of the License, or (at your option)
|
|
|
|
any later version. The code is distributed WITHOUT ANY WARRANTY;
|
|
|
|
without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
|
|
FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
|
|
|
|
|
|
|
|
As additional permission under GNU GPL version 3 section 7, you
|
|
|
|
may distribute non-source (e.g., minimized or compacted) forms of
|
|
|
|
that code without the copy of the GNU GPL normally required by
|
|
|
|
section 4, provided you include this license notice and a URL
|
|
|
|
through which recipients can access the Corresponding Source.
|
|
|
|
|
|
|
|
|
|
|
|
@licend The above is the entire license notice
|
|
|
|
for the JavaScript code in this tag.
|
|
|
|
*/
|
|
|
|
<!--/*--><![CDATA[/*><!--*/
|
|
|
|
function CodeHighlightOn(elem, id)
|
|
|
|
{
|
|
|
|
var target = document.getElementById(id);
|
|
|
|
if(null != target) {
|
|
|
|
elem.cacheClassElem = elem.className;
|
|
|
|
elem.cacheClassTarget = target.className;
|
|
|
|
target.className = "code-highlighted";
|
|
|
|
elem.className = "code-highlighted";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function CodeHighlightOff(elem, id)
|
|
|
|
{
|
|
|
|
var target = document.getElementById(id);
|
|
|
|
if(elem.cacheClassElem)
|
|
|
|
elem.className = elem.cacheClassElem;
|
|
|
|
if(elem.cacheClassTarget)
|
|
|
|
target.className = elem.cacheClassTarget;
|
|
|
|
}
|
|
|
|
/*]]>*///-->
|
|
|
|
</script>
|
|
|
|
</head>
|
|
|
|
<body>
|
2021-04-30 01:35:52 +02:00
|
|
|
<div id="org-div-home-and-up">
|
|
|
|
<a accesskey="h" href=""> UP </a>
|
|
|
|
|
|
|
|
|
<a accesskey="H" href="index.html"> HOME </a>
|
|
|
|
</div><div id="content">
|
2021-03-19 13:49:11 +01:00
|
|
|
<h1 class="title">Memory management</h1>
|
|
|
|
<div id="table-of-contents">
|
|
|
|
<h2>Table of Contents</h2>
|
|
|
|
<div id="text-table-of-contents">
|
|
|
|
<ul>
|
2021-06-22 23:34:25 +02:00
|
|
|
<li><a href="#orgcb365d6">1. Memory data structure for the context</a></li>
|
|
|
|
<li><a href="#org55af399">2. Passing info to allocation routines</a></li>
|
|
|
|
<li><a href="#org88f1f99">3. Allocation/deallocation functions</a></li>
|
2021-03-19 13:49:11 +01:00
|
|
|
</ul>
|
|
|
|
</div>
|
|
|
|
</div>
|
2021-04-21 00:01:53 +02:00
|
|
|
|
2021-06-22 23:34:25 +02:00
|
|
|
<div id="outline-container-orgcb365d6" class="outline-2">
|
|
|
|
<h2 id="orgcb365d6"><span class="section-number-2">1</span> Memory data structure for the context</h2>
|
2021-04-21 00:01:53 +02:00
|
|
|
<div class="outline-text-2" id="text-1">
|
|
|
|
<p>
|
|
|
|
Every time a new block of memory is allocated, the information
|
|
|
|
relative to the allocation is stored in a new <code>qmckl_memory_info_struct</code>.
|
2021-04-30 01:28:23 +02:00
|
|
|
A <code>qmckl_memory_info_struct</code> contains the pointer to the memory block,
|
2021-04-21 00:01:53 +02:00
|
|
|
its size in bytes, and extra implementation-specific information such as
|
|
|
|
alignment, pinning, if the memory should be allocated on CPU or GPU
|
|
|
|
<i>etc</i>.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<div class="org-src-container">
|
|
|
|
<pre class="src src-c"><span style="color: #a020f0;">typedef</span> <span style="color: #a020f0;">struct</span> <span style="color: #228b22;">qmckl_memory_info_struct</span> {
|
|
|
|
<span style="color: #228b22;">size_t</span> <span style="color: #a0522d;">size</span>;
|
|
|
|
<span style="color: #228b22;">void</span>* <span style="color: #a0522d;">pointer</span>;
|
|
|
|
} <span style="color: #228b22;">qmckl_memory_info_struct</span>;
|
|
|
|
|
|
|
|
<span style="color: #a020f0;">static</span> <span style="color: #a020f0;">const</span> <span style="color: #228b22;">qmckl_memory_info_struct</span> <span style="color: #a0522d;">qmckl_memory_info_struct_zero</span> =
|
|
|
|
{
|
|
|
|
.size = (<span style="color: #228b22;">size_t</span>) 0,
|
|
|
|
.pointer = <span style="color: #008b8b;">NULL</span>
|
|
|
|
};
|
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
|
2021-03-19 13:49:11 +01:00
|
|
|
<p>
|
2021-04-21 00:01:53 +02:00
|
|
|
The <code>memory</code> element of the context is a data structure which
|
|
|
|
contains an array of <code>qmckl_memory_info_struct</code>, the size of the
|
|
|
|
array, and the number of allocated blocks.
|
2021-03-19 13:49:11 +01:00
|
|
|
</p>
|
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
<div class="org-src-container">
|
|
|
|
<pre class="src src-c"><span style="color: #a020f0;">typedef</span> <span style="color: #a020f0;">struct</span> <span style="color: #228b22;">qmckl_memory_struct</span> {
|
|
|
|
<span style="color: #228b22;">size_t</span> <span style="color: #a0522d;">n_allocated</span>;
|
|
|
|
<span style="color: #228b22;">size_t</span> <span style="color: #a0522d;">array_size</span>;
|
|
|
|
<span style="color: #228b22;">qmckl_memory_info_struct</span>* <span style="color: #a0522d;">element</span>;
|
|
|
|
} <span style="color: #228b22;">qmckl_memory_struct</span>;
|
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
</div>
|
|
|
|
</div>
|
|
|
|
|
2021-06-22 23:34:25 +02:00
|
|
|
<div id="outline-container-org55af399" class="outline-2">
|
|
|
|
<h2 id="org55af399"><span class="section-number-2">2</span> Passing info to allocation routines</h2>
|
2021-04-21 00:01:53 +02:00
|
|
|
<div class="outline-text-2" id="text-2">
|
|
|
|
<p>
|
|
|
|
Passing information to the allocation routine should be done by
|
|
|
|
passing an instance of a <code>qmckl_memory_info_struct</code>.
|
|
|
|
</p>
|
|
|
|
</div>
|
|
|
|
</div>
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-06-22 23:34:25 +02:00
|
|
|
<div id="outline-container-org88f1f99" class="outline-2">
|
|
|
|
<h2 id="org88f1f99"><span class="section-number-2">3</span> Allocation/deallocation functions</h2>
|
2021-04-21 00:01:53 +02:00
|
|
|
<div class="outline-text-2" id="text-3">
|
2021-03-19 13:49:11 +01:00
|
|
|
<p>
|
|
|
|
Memory allocation inside the library should be done with
|
|
|
|
<code>qmckl_malloc</code>. It lets the library choose how the memory will be
|
|
|
|
allocated, and a pointer is returned to the user. The context is
|
|
|
|
passed to let the library store data related to the allocation
|
|
|
|
inside the context. In this particular implementation of the library,
|
|
|
|
we store a list of allocated pointers so that all the memory can be
|
|
|
|
properly freed when the library is de-initialized.
|
|
|
|
If the allocation failed, the <code>NULL</code> pointer is returned.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<div class="org-src-container">
|
|
|
|
<pre class="src src-c"><span style="color: #228b22;">void</span>* <span style="color: #0000ff;">qmckl_malloc</span>(<span style="color: #228b22;">qmckl_context</span> <span style="color: #a0522d;">context</span>,
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #a020f0;">const</span> <span style="color: #228b22;">qmckl_memory_info_struct</span> <span style="color: #a0522d;">info</span>);
|
2021-03-19 13:49:11 +01:00
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
<div class="org-src-container">
|
2021-04-21 00:01:53 +02:00
|
|
|
<pre class="src src-c"><span style="color: #228b22;">void</span>* <span style="color: #0000ff;">qmckl_malloc</span>(<span style="color: #228b22;">qmckl_context</span> <span style="color: #a0522d;">context</span>, <span style="color: #a020f0;">const</span> <span style="color: #228b22;">qmckl_memory_info_struct</span> <span style="color: #a0522d;">info</span>) {
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
assert (qmckl_context_check(context) != QMCKL_NULL_CONTEXT);
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #228b22;">qmckl_context_struct</span>* <span style="color: #a020f0;">const</span> <span style="color: #a0522d;">ctx</span> = (<span style="color: #228b22;">qmckl_context_struct</span>* <span style="color: #a020f0;">const</span>) context;
|
|
|
|
|
|
|
|
/* <span style="color: #b22222;">Allocate memory and zero it </span>*/
|
|
|
|
<span style="color: #228b22;">void</span> * <span style="color: #a0522d;">pointer</span> = malloc(info.size);
|
|
|
|
<span style="color: #a020f0;">if</span> (pointer == <span style="color: #008b8b;">NULL</span>) {
|
|
|
|
<span style="color: #a020f0;">return</span> <span style="color: #008b8b;">NULL</span>;
|
2021-03-19 13:49:11 +01:00
|
|
|
}
|
2021-04-21 00:01:53 +02:00
|
|
|
memset(pointer, 0, info.size);
|
|
|
|
|
|
|
|
qmckl_lock(context);
|
|
|
|
{
|
|
|
|
/* <span style="color: #b22222;">If qmckl_memory_struct is full, reallocate a larger one </span>*/
|
|
|
|
<span style="color: #a020f0;">if</span> (ctx->memory.n_allocated == ctx->memory.array_size) {
|
|
|
|
<span style="color: #a020f0;">const</span> <span style="color: #228b22;">size_t</span> <span style="color: #a0522d;">old_size</span> = ctx->memory.array_size;
|
2021-05-12 23:59:31 +02:00
|
|
|
<span style="color: #228b22;">qmckl_memory_info_struct</span> * <span style="color: #a0522d;">new_array</span> = realloc(ctx->memory.element,
|
|
|
|
2L * old_size *
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #a020f0;">sizeof</span>(qmckl_memory_info_struct));
|
|
|
|
<span style="color: #a020f0;">if</span> (new_array == <span style="color: #008b8b;">NULL</span>) {
|
|
|
|
qmckl_unlock(context);
|
|
|
|
free(pointer);
|
|
|
|
<span style="color: #a020f0;">return</span> <span style="color: #008b8b;">NULL</span>;
|
|
|
|
}
|
|
|
|
|
|
|
|
memset( &(new_array[old_size]), 0, <span style="color: #228b22;">old_size</span> * <span style="color: #a020f0;">sizeof</span>(qmckl_memory_info_struct) );
|
|
|
|
ctx->memory.element = new_array;
|
|
|
|
ctx->memory.array_size = 2L * old_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* <span style="color: #b22222;">Find first NULL entry </span>*/
|
|
|
|
<span style="color: #228b22;">size_t</span> <span style="color: #a0522d;">pos</span> = (<span style="color: #228b22;">size_t</span>) 0;
|
|
|
|
<span style="color: #a020f0;">while</span> ( pos < ctx->memory.array_size && ctx->memory.element[pos].size > (<span style="color: #228b22;">size_t</span>) 0) {
|
|
|
|
pos += (<span style="color: #228b22;">size_t</span>) 1;
|
|
|
|
}
|
|
|
|
assert (ctx->memory.element[pos].size == (<span style="color: #228b22;">size_t</span>) 0);
|
|
|
|
|
|
|
|
/* <span style="color: #b22222;">Copy info at the new location </span>*/
|
|
|
|
ctx->memory.element[pos].size = info.size;
|
|
|
|
ctx->memory.element[pos].pointer = pointer;
|
|
|
|
ctx->memory.n_allocated += (<span style="color: #228b22;">size_t</span>) 1;
|
|
|
|
}
|
|
|
|
qmckl_unlock(context);
|
2021-03-19 13:49:11 +01:00
|
|
|
|
|
|
|
<span style="color: #a020f0;">return</span> pointer;
|
|
|
|
}
|
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
<div class="org-src-container">
|
2021-04-21 00:01:53 +02:00
|
|
|
<pre class="src src-c">/* <span style="color: #b22222;">Create a context </span>*/
|
2021-04-30 01:28:23 +02:00
|
|
|
<span style="color: #228b22;">qmckl_context</span> <span style="color: #a0522d;">context</span> = qmckl_context_create();
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #228b22;">qmckl_memory_info_struct</span> <span style="color: #a0522d;">info</span> = qmckl_memory_info_struct_zero;
|
|
|
|
info.size = (<span style="color: #228b22;">size_t</span>) 3;
|
|
|
|
|
|
|
|
/* <span style="color: #b22222;">Allocate an array of ints </span>*/
|
|
|
|
<span style="color: #228b22;">int</span> *<span style="color: #a0522d;">a</span> = (<span style="color: #228b22;">int</span>*) <span style="color: #0000ff;">qmckl_malloc</span>(context, info);
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
/* <span style="color: #b22222;">Check that array of ints is OK </span>*/
|
2021-05-12 02:37:06 +02:00
|
|
|
<span style="color: #0000ff;">assert</span>(a != <span style="color: #008b8b;">NULL</span>);
|
|
|
|
<span style="color: #228b22;">a</span>[0] = 1; <span style="color: #0000ff;">assert</span>(<span style="color: #228b22;">a</span>[0] == 1);
|
|
|
|
<span style="color: #228b22;">a</span>[1] = 2; <span style="color: #0000ff;">assert</span>(<span style="color: #228b22;">a</span>[1] == 2);
|
|
|
|
<span style="color: #228b22;">a</span>[2] = 3; <span style="color: #0000ff;">assert</span>(<span style="color: #228b22;">a</span>[2] == 3);
|
2021-04-21 00:01:53 +02:00
|
|
|
|
|
|
|
/* <span style="color: #b22222;">Allocate another array of ints </span>*/
|
|
|
|
<span style="color: #228b22;">int</span> *<span style="color: #a0522d;">b</span> = (<span style="color: #228b22;">int</span>*) <span style="color: #0000ff;">qmckl_malloc</span>(context, info);
|
|
|
|
|
|
|
|
/* <span style="color: #b22222;">Check that array of ints is OK </span>*/
|
2021-05-12 02:37:06 +02:00
|
|
|
<span style="color: #0000ff;">assert</span>(b != <span style="color: #008b8b;">NULL</span>);
|
|
|
|
<span style="color: #228b22;">b</span>[0] = 1; <span style="color: #0000ff;">assert</span>(<span style="color: #228b22;">b</span>[0] == 1);
|
|
|
|
<span style="color: #228b22;">b</span>[1] = 2; <span style="color: #0000ff;">assert</span>(<span style="color: #228b22;">b</span>[1] == 2);
|
|
|
|
<span style="color: #228b22;">b</span>[2] = 3; <span style="color: #0000ff;">assert</span>(<span style="color: #228b22;">b</span>[2] == 3);
|
2021-03-19 13:49:11 +01:00
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
When freeing the memory with <code>qmckl_free</code>, the context is passed, in
|
|
|
|
case some important information has been stored related to memory
|
|
|
|
allocation and needs to be updated.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<div class="org-src-container">
|
|
|
|
<pre class="src src-c"><span style="color: #228b22;">qmckl_exit_code</span> <span style="color: #0000ff;">qmckl_free</span>(<span style="color: #228b22;">qmckl_context</span> <span style="color: #a0522d;">context</span>,
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #228b22;">void</span> * <span style="color: #a020f0;">const</span> <span style="color: #a0522d;">ptr</span>);
|
2021-03-19 13:49:11 +01:00
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
<div class="org-src-container">
|
2021-04-21 00:01:53 +02:00
|
|
|
<pre class="src src-c"><span style="color: #228b22;">qmckl_exit_code</span> <span style="color: #0000ff;">qmckl_free</span>(<span style="color: #228b22;">qmckl_context</span> <span style="color: #a0522d;">context</span>, <span style="color: #228b22;">void</span> * <span style="color: #a020f0;">const</span> <span style="color: #a0522d;">ptr</span>) {
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #a020f0;">if</span> (qmckl_context_check(context) == QMCKL_NULL_CONTEXT) {
|
|
|
|
<span style="color: #a020f0;">return</span> qmckl_failwith(context,
|
|
|
|
QMCKL_INVALID_CONTEXT,
|
|
|
|
<span style="color: #8b2252;">"qmckl_free"</span>,
|
|
|
|
<span style="color: #008b8b;">NULL</span>);
|
|
|
|
}
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #a020f0;">if</span> (ptr == <span style="color: #008b8b;">NULL</span>) {
|
|
|
|
<span style="color: #a020f0;">return</span> qmckl_failwith(context,
|
|
|
|
QMCKL_INVALID_ARG_2,
|
|
|
|
<span style="color: #8b2252;">"qmckl_free"</span>,
|
|
|
|
<span style="color: #8b2252;">"NULL pointer"</span>);
|
|
|
|
}
|
|
|
|
|
|
|
|
<span style="color: #228b22;">qmckl_context_struct</span>* <span style="color: #a020f0;">const</span> <span style="color: #a0522d;">ctx</span> = (<span style="color: #228b22;">qmckl_context_struct</span>* <span style="color: #a020f0;">const</span>) context;
|
|
|
|
|
|
|
|
qmckl_lock(context);
|
|
|
|
{
|
|
|
|
/* <span style="color: #b22222;">Find pointer in array of saved pointers </span>*/
|
|
|
|
<span style="color: #228b22;">size_t</span> <span style="color: #a0522d;">pos</span> = (<span style="color: #228b22;">size_t</span>) 0;
|
|
|
|
<span style="color: #a020f0;">while</span> ( pos < ctx->memory.array_size && ctx->memory.element[pos].pointer != ptr) {
|
|
|
|
pos += (<span style="color: #228b22;">size_t</span>) 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
<span style="color: #a020f0;">if</span> (pos >= ctx->memory.array_size) {
|
|
|
|
/* <span style="color: #b22222;">Not found </span>*/
|
|
|
|
qmckl_unlock(context);
|
2021-03-19 13:49:11 +01:00
|
|
|
<span style="color: #a020f0;">return</span> qmckl_failwith(context,
|
2021-04-21 00:01:53 +02:00
|
|
|
QMCKL_FAILURE,
|
2021-03-19 13:49:11 +01:00
|
|
|
<span style="color: #8b2252;">"qmckl_free"</span>,
|
2021-04-21 00:01:53 +02:00
|
|
|
<span style="color: #8b2252;">"Pointer not found in context"</span>);
|
2021-03-19 13:49:11 +01:00
|
|
|
}
|
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
free(ptr);
|
2021-03-19 13:49:11 +01:00
|
|
|
|
2021-04-21 00:01:53 +02:00
|
|
|
memset( &(ctx->memory.element[pos]), 0, <span style="color: #a020f0;">sizeof</span>(qmckl_memory_info_struct) );
|
|
|
|
ctx->memory.n_allocated -= (<span style="color: #228b22;">size_t</span>) 1;
|
2021-03-19 13:49:11 +01:00
|
|
|
}
|
2021-04-21 00:01:53 +02:00
|
|
|
qmckl_unlock(context);
|
|
|
|
|
2021-03-19 13:49:11 +01:00
|
|
|
<span style="color: #a020f0;">return</span> QMCKL_SUCCESS;
|
|
|
|
}
|
|
|
|
</pre>
|
|
|
|
</div>
|
|
|
|
</div>
|
|
|
|
</div>
|
|
|
|
</div>
|
|
|
|
<div id="postamble" class="status">
|
2021-04-30 01:35:52 +02:00
|
|
|
<p class="author">Author: TREX CoE</p>
|
2021-06-22 23:34:25 +02:00
|
|
|
<p class="date">Created: 2021-06-22 Tue 21:34</p>
|
2021-03-19 13:49:11 +01:00
|
|
|
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
|
|
|
|
</div>
|
|
|
|
</body>
|
|
|
|
</html>
|