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diff --git a/share/doc/gccint/Miscellaneous-routines.html b/share/doc/gccint/Miscellaneous-routines.html new file mode 100644 index 0000000..7d105a7 --- /dev/null +++ b/share/doc/gccint/Miscellaneous-routines.html @@ -0,0 +1,132 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- 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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It may be called like this: +</p><div class="smallexample"> +<pre class="smallexample"> void *next_segment = NULL; + void *next_sp = NULL; + void *initial_sp = NULL; + void *stack; + size_t stack_size; + while ((stack = __splitstack_find (next_segment, next_sp, + &stack_size, &next_segment, + &next_sp, &initial_sp)) + != NULL) + { + /* Stack segment starts at stack and is + stack_size bytes long. */ + } +</pre></div> + +<p>There is no way to iterate over the stack segments of a different +thread. However, what is permitted is for one thread to call this +with the <var>segment_arg</var> and <var>sp</var> arguments NULL, to pass +<var>next_segment</var>, <var>next_sp</var>, and <var>initial_sp</var> to a different +thread, and then to suspend one way or another. A different thread +may run the subsequent <code>__splitstack_find</code> iterations. Of +course, this will only work if the first thread is suspended while the +second thread is calling <code>__splitstack_find</code>. If not, the second +thread could be looking at the stack while it is changing, and +anything could happen. +</p></dd></dl> + +<dl> +<dt><a name="index-_005f_005fmorestack_005fsegments"></a>Variable: <strong>__morestack_segments</strong></dt> +<dt><a name="index-_005f_005fmorestack_005fcurrent_005fsegment"></a>Variable: <strong>__morestack_current_segment</strong></dt> +<dt><a name="index-_005f_005fmorestack_005finitial_005fsp"></a>Variable: <strong>__morestack_initial_sp</strong></dt> +<dd><p>Internal variables used by the <samp>-fsplit-stack</samp> implementation. +</p></dd></dl> + + + + +</body> +</html> |