mirror of
https://gitlab.gnome.org/GNOME/glib.git
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f9faac7661
All glib/*.{c,h} files have been processed, as well as gtester-report.
12 of those files are not licensed under LGPL:
gbsearcharray.h
gconstructor.h
glibintl.h
gmirroringtable.h
gscripttable.h
gtranslit-data.h
gunibreak.h
gunichartables.h
gunicomp.h
gunidecomp.h
valgrind.h
win_iconv.c
Some of them are generated files, some are licensed under a BSD-style
license and win_iconv.c is in the public domain.
Sub-directories inside glib/:
deprecated/: processed in a previous commit
glib-mirroring-tab/: already LGPLv2.1+
gnulib/: not modified, the code is copied from gnulib
libcharset/: a copy
pcre/: a copy
tests/: processed in a previous commit
https://bugzilla.gnome.org/show_bug.cgi?id=776504
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __G_ALLOCA_H__
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#define __G_ALLOCA_H__
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#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
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#error "Only <glib.h> can be included directly."
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#endif
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#include <glib/gtypes.h>
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#if defined(__BIONIC__) && defined (GLIB_HAVE_ALLOCA_H)
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# include <alloca.h>
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#elif defined(__GNUC__)
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/* GCC does the right thing */
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# undef alloca
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# define alloca(size) __builtin_alloca (size)
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#elif defined (GLIB_HAVE_ALLOCA_H)
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/* a native and working alloca.h is there */
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# include <alloca.h>
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#else /* !__GNUC__ && !GLIB_HAVE_ALLOCA_H */
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# if defined(_MSC_VER) || defined(__DMC__)
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# include <malloc.h>
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# define alloca _alloca
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# else /* !_MSC_VER && !__DMC__ */
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# ifdef _AIX
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# pragma alloca
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# else /* !_AIX */
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# ifndef alloca /* predefined by HP cc +Olibcalls */
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G_BEGIN_DECLS
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char *alloca ();
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G_END_DECLS
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# endif /* !alloca */
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# endif /* !_AIX */
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# endif /* !_MSC_VER && !__DMC__ */
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#endif /* !__GNUC__ && !GLIB_HAVE_ALLOCA_H */
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/**
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* g_alloca:
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* @size: number of bytes to allocate.
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*
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* Allocates @size bytes on the stack; these bytes will be freed when the current
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* stack frame is cleaned up. This macro essentially just wraps the alloca()
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* function present on most UNIX variants.
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* Thus it provides the same advantages and pitfalls as alloca():
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*
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* - alloca() is very fast, as on most systems it's implemented by just adjusting
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* the stack pointer register.
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*
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* - It doesn't cause any memory fragmentation, within its scope, separate alloca()
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* blocks just build up and are released together at function end.
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*
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* - Allocation sizes have to fit into the current stack frame. For instance in a
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* threaded environment on Linux, the per-thread stack size is limited to 2 Megabytes,
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* so be sparse with alloca() uses.
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*
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* - Allocation failure due to insufficient stack space is not indicated with a %NULL
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* return like e.g. with malloc(). Instead, most systems probably handle it the same
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* way as out of stack space situations from infinite function recursion, i.e.
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* with a segmentation fault.
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*
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* - Special care has to be taken when mixing alloca() with GNU C variable sized arrays.
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* Stack space allocated with alloca() in the same scope as a variable sized array
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* will be freed together with the variable sized array upon exit of that scope, and
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* not upon exit of the enclosing function scope.
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*
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* Returns: space for @size bytes, allocated on the stack
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*/
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#define g_alloca(size) alloca (size)
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/**
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* g_newa:
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* @struct_type: Type of memory chunks to be allocated
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* @n_structs: Number of chunks to be allocated
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*
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* Wraps g_alloca() in a more typesafe manner.
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*
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* Returns: Pointer to stack space for @n_structs chunks of type @struct_type
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*/
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#define g_newa(struct_type, n_structs) ((struct_type*) g_alloca (sizeof (struct_type) * (gsize) (n_structs)))
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#endif /* __G_ALLOCA_H__ */
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