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diff --git a/share/doc/gcc/C99-Thread_002dLocal-Edits.html b/share/doc/gcc/C99-Thread_002dLocal-Edits.html new file mode 100644 index 0000000..23f9523 --- /dev/null +++ b/share/doc/gcc/C99-Thread_002dLocal-Edits.html @@ -0,0 +1,146 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This file documents the use of the GNU compilers. + +Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). 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Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Using the GNU Compiler Collection (GCC): C99 Thread-Local Edits</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): C99 Thread-Local Edits"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): C99 Thread-Local Edits"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Indices.html#Indices" rel="index" title="Indices"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Thread_002dLocal.html#Thread_002dLocal" rel="up" title="Thread-Local"> +<link href="C_002b_002b98-Thread_002dLocal-Edits.html#C_002b_002b98-Thread_002dLocal-Edits" rel="next" title="C++98 Thread-Local Edits"> +<link href="Thread_002dLocal.html#Thread_002dLocal" rel="previous" title="Thread-Local"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en_US" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="C99-Thread_002dLocal-Edits"></a> +<div class="header"> +<p> +Next: <a href="C_002b_002b98-Thread_002dLocal-Edits.html#C_002b_002b98-Thread_002dLocal-Edits" accesskey="n" rel="next">C++98 Thread-Local Edits</a>, Up: <a href="Thread_002dLocal.html#Thread_002dLocal" accesskey="u" rel="up">Thread-Local</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="ISO_002fIEC-9899_003a1999-Edits-for-Thread_002dLocal-Storage"></a> +<h4 class="subsection">6.64.1 ISO/IEC 9899:1999 Edits for Thread-Local Storage</h4> + +<p>The following are a set of changes to ISO/IEC 9899:1999 (aka C99) +that document the exact semantics of the language extension. +</p> +<ul> +<li> <cite>5.1.2 Execution environments</cite> + +<p>Add new text after paragraph 1 +</p> +<blockquote> +<p>Within either execution environment, a <em>thread</em> is a flow of +control within a program. It is implementation defined whether +or not there may be more than one thread associated with a program. +It is implementation defined how threads beyond the first are +created, the name and type of the function called at thread +startup, and how threads may be terminated. However, objects +with thread storage duration shall be initialized before thread +startup. +</p></blockquote> + +</li><li> <cite>6.2.4 Storage durations of objects</cite> + +<p>Add new text before paragraph 3 +</p> +<blockquote> +<p>An object whose identifier is declared with the storage-class +specifier <code><span class="nolinebreak">__thread</span></code><!-- /@w --> has <em>thread storage duration</em>. +Its lifetime is the entire execution of the thread, and its +stored value is initialized only once, prior to thread startup. +</p></blockquote> + +</li><li> <cite>6.4.1 Keywords</cite> + +<p>Add <code>__thread</code>. +</p> +</li><li> <cite>6.7.1 Storage-class specifiers</cite> + +<p>Add <code>__thread</code> to the list of storage class specifiers in +paragraph 1. +</p> +<p>Change paragraph 2 to +</p> +<blockquote> +<p>With the exception of <code>__thread</code>, at most one storage-class +specifier may be given […]. The <code>__thread</code> specifier may +be used alone, or immediately following <code>extern</code> or +<code>static</code>. +</p></blockquote> + +<p>Add new text after paragraph 6 +</p> +<blockquote> +<p>The declaration of an identifier for a variable that has +block scope that specifies <code>__thread</code> shall also +specify either <code>extern</code> or <code>static</code>. +</p> +<p>The <code>__thread</code> specifier shall be used only with +variables. +</p></blockquote> +</li></ul> + + + + +</body> +</html> |