diff options
Diffstat (limited to 'spice')
| -rw-r--r-- | spice/Makefile.am | 1 | ||||
| -rw-r--r-- | spice/macros.h | 186 |
2 files changed, 187 insertions, 0 deletions
diff --git a/spice/Makefile.am b/spice/Makefile.am index 5867653..d5dea6a 100644 --- a/spice/Makefile.am +++ b/spice/Makefile.am @@ -9,6 +9,7 @@ spice_protocol_include_HEADERS= \ error_codes.h \ ipc_ring.h \ protocol.h \ + macros.h \ qxl_dev.h \ start-packed.h \ stats.h \ diff --git a/spice/macros.h b/spice/macros.h new file mode 100644 index 0000000..72186dd --- /dev/null +++ b/spice/macros.h @@ -0,0 +1,186 @@ +/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */ +/* + Copyright (C) 2010 Red Hat, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of + the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +/* This file is to a large extent based on gmacros.h from glib + * Which is LGPL and copyright: + * + * Modified by the GLib Team and others 1997-2000. See the AUTHORS + * file for a list of people on the GLib Team. See the ChangeLog + * files for a list of changes. These files are distributed with + * GLib at ftp://ftp.gtk.org/pub/gtk/. + */ + +#ifndef _H_SPICE_MACROS +#define _H_SPICE_MACROS + +/* We include stddef.h to get the system's definition of NULL */ +#include <stddef.h> + +#include <spice/types.h> + +#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) +#define SPICE_GNUC_PURE __attribute__((__pure__)) +#define SPICE_GNUC_MALLOC __attribute__((__malloc__)) +#else +#define SPICE_GNUC_PURE +#define SPICE_GNUC_MALLOC +#endif + +#if __GNUC__ >= 4 +#define SPICE_GNUC_NULL_TERMINATED __attribute__((__sentinel__)) +#else +#define SPICE_GNUC_NULL_TERMINATED +#endif + +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) +#define SPICE_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x))) +#define SPICE_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y))) +#else +#define SPICE_GNUC_ALLOC_SIZE(x) +#define SPICE_GNUC_ALLOC_SIZE2(x,y) +#endif + +#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4) +#define SPICE_GNUC_PRINTF( format_idx, arg_idx ) __attribute__((__format__ (__printf__, format_idx, arg_idx))) +#define SPICE_GNUC_SCANF( format_idx, arg_idx ) __attribute__((__format__ (__scanf__, format_idx, arg_idx))) +#define SPICE_GNUC_FORMAT( arg_idx ) __attribute__((__format_arg__ (arg_idx))) +#define SPICE_GNUC_NORETURN __attribute__((__noreturn__)) +#define SPICE_GNUC_CONST __attribute__((__const__)) +#define SPICE_GNUC_UNUSED __attribute__((__unused__)) +#define SPICE_GNUC_NO_INSTRUMENT __attribute__((__no_instrument_function__)) +#else /* !__GNUC__ */ +#define SPICE_GNUC_PRINTF( format_idx, arg_idx ) +#define SPICE_GNUC_SCANF( format_idx, arg_idx ) +#define SPICE_GNUC_FORMAT( arg_idx ) +#define SPICE_GNUC_NORETURN +#define SPICE_GNUC_CONST +#define SPICE_GNUC_UNUSED +#define SPICE_GNUC_NO_INSTRUMENT +#endif /* !__GNUC__ */ + +#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) +#define SPICE_GNUC_DEPRECATED __attribute__((__deprecated__)) +#else +#define SPICE_GNUC_DEPRECATED +#endif /* __GNUC__ */ + +#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) +# define SPICE_GNUC_MAY_ALIAS __attribute__((may_alias)) +#else +# define SPICE_GNUC_MAY_ALIAS +#endif + +#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) +#define SPICE_GNUC_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) +#else +#define SPICE_GNUC_WARN_UNUSED_RESULT +#endif /* __GNUC__ */ + + +/* Guard C code in headers, while including them from C++ */ +#ifdef __cplusplus +# define SPICE_BEGIN_DECLS extern "C" { +# define SPICE_END_DECLS } +#else +# define SPICE_BEGIN_DECLS +# define SPICE_END_DECLS +#endif + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +#undef MAX +#define MAX(a, b) (((a) > (b)) ? (a) : (b)) + +#undef MIN +#define MIN(a, b) (((a) < (b)) ? (a) : (b)) + +#undef ABS +#define ABS(a) (((a) < 0) ? -(a) : (a)) + +/* Count the number of elements in an array. The array must be defined + * as such; using this with a dynamically allocated array will give + * incorrect results. + */ +#define SPICE_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0])) + +#define SPICE_ALIGN(a, size) (((a) + ((size) - 1)) & ~((size) - 1)) + +/* Provide convenience macros for handling structure + * fields through their offsets. + */ + +#if defined(__GNUC__) && __GNUC__ >= 4 +# define SPICE_OFFSETOF(struct_type, member) \ + ((long) offsetof (struct_type, member)) +#else +# define SPICE_OFFSETOF(struct_type, member) \ + ((long) ((uint8_t*) &((struct_type*) 0)->member)) +#endif + +#define SPICE_CONTAINEROF(ptr, struct_type, member) \ + ((struct_type *)((uint8_t *)(ptr) - SPICE_OFFSETOF(struct_type, member))) + +#define SPICE_MEMBER_P(struct_p, struct_offset) \ + ((gpointer) ((guint8*) (struct_p) + (glong) (struct_offset))) +#define SPICE_MEMBER(member_type, struct_p, struct_offset) \ + (*(member_type*) SPICE_STRUCT_MEMBER_P ((struct_p), (struct_offset))) + +/* Provide simple macro statement wrappers: + * SPICE_STMT_START { statements; } SPICE_STMT_END; + * This can be used as a single statement, like: + * if (x) SPICE_STMT_START { ... } SPICE_STMT_END; else ... + * This intentionally does not use compiler extensions like GCC's '({...})' to + * avoid portability issue or side effects when compiled with different compilers. + */ +#if !(defined (SPICE_STMT_START) && defined (SPICE_STMT_END)) +# define SPICE_STMT_START do +# define SPICE_STMT_END while (0) +#endif + +/* + * The SPICE_LIKELY and SPICE_UNLIKELY macros let the programmer give hints to + * the compiler about the expected result of an expression. Some compilers + * can use this information for optimizations. + * + * The _SPICE_BOOLEAN_EXPR macro is intended to trigger a gcc warning when + * putting assignments in g_return_if_fail (). + */ +#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__) +#define _SPICE_BOOLEAN_EXPR(expr) \ + __extension__ ({ \ + int _g_boolean_var_; \ + if (expr) \ + _g_boolean_var_ = 1; \ + else \ + _g_boolean_var_ = 0; \ + _g_boolean_var_; \ +}) +#define SPICE_LIKELY(expr) (__builtin_expect (_SPICE_BOOLEAN_EXPR(expr), 1)) +#define SPICE_UNLIKELY(expr) (__builtin_expect (_SPICE_BOOLEAN_EXPR(expr), 0)) +#else +#define SPICE_LIKELY(expr) (expr) +#define SPICE_UNLIKELY(expr) (expr) +#endif + +#endif /* _H_SPICE_MACROS */ |