/* NetworkManager -- Network link manager * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA. * * (C) Copyright 2014 Red Hat, Inc. */ #ifndef __NM_MACROS_INTERNAL_H__ #define __NM_MACROS_INTERNAL_H__ #include #include #include #define _nm_packed __attribute__ ((packed)) #define _nm_unused __attribute__ ((unused)) #define _nm_pure __attribute__ ((pure)) #define _nm_const __attribute__ ((const)) #define _nm_printf(a,b) __attribute__ ((__format__ (__printf__, a, b))) #define _nm_align(s) __attribute__ ((aligned (s))) #define _nm_alignof(type) __alignof (type) #define _nm_alignas(type) _nm_align (_nm_alignof (type)) #if __GNUC__ >= 7 #define _nm_fallthrough __attribute__ ((fallthrough)) #else #define _nm_fallthrough #endif /*****************************************************************************/ #ifdef thread_local #define _nm_thread_local thread_local /* * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__ * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769 */ #elif __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16)) #define _nm_thread_local _Thread_local #else #define _nm_thread_local __thread #endif /*****************************************************************************/ #include "nm-glib.h" /*****************************************************************************/ #define nm_offsetofend(t,m) (G_STRUCT_OFFSET (t,m) + sizeof (((t *) NULL)->m)) #define nm_auto(fcn) __attribute__ ((cleanup(fcn))) static inline int nm_close (int fd); /** * nm_auto_free: * * Call free() on a variable location when it goes out of scope. */ #define nm_auto_free nm_auto(_nm_auto_free_impl) GS_DEFINE_CLEANUP_FUNCTION(void*, _nm_auto_free_impl, free) static inline void nm_free_secret (char *secret) { if (secret) { memset (secret, 0, strlen (secret)); g_free (secret); } } static inline void _nm_auto_free_secret_impl (char **v) { nm_free_secret (*v); } /** * nm_auto_free_secret: * * Call g_free() on a variable location when it goes out of scope. * Also, previously, calls memset(loc, 0, strlen(loc)) to clear out * the secret. */ #define nm_auto_free_secret nm_auto(_nm_auto_free_secret_impl) static inline void _nm_auto_unset_gvalue_impl (GValue *v) { g_value_unset (v); } #define nm_auto_unset_gvalue nm_auto(_nm_auto_unset_gvalue_impl) static inline void _nm_auto_unref_gtypeclass (gpointer v) { if (v && *((gpointer *) v)) g_type_class_unref (*((gpointer *) v)); } #define nm_auto_unref_gtypeclass nm_auto(_nm_auto_unref_gtypeclass) static inline void _nm_auto_free_gstring_impl (GString **str) { if (*str) g_string_free (*str, TRUE); } #define nm_auto_free_gstring nm_auto(_nm_auto_free_gstring_impl) static inline void _nm_auto_close_impl (int *pfd) { if (*pfd >= 0) { int errsv = errno; (void) nm_close (*pfd); errno = errsv; } } #define nm_auto_close nm_auto(_nm_auto_close_impl) static inline void _nm_auto_fclose_impl (FILE **pfd) { if (*pfd) { int errsv = errno; (void) fclose (*pfd); errno = errsv; } } #define nm_auto_fclose nm_auto(_nm_auto_fclose_impl) static inline void _nm_auto_protect_errno (int *p_saved_errno) { errno = *p_saved_errno; } #define NM_AUTO_PROTECT_ERRNO(errsv_saved) nm_auto(_nm_auto_protect_errno) _nm_unused const int errsv_saved = (errno) /*****************************************************************************/ /* http://stackoverflow.com/a/11172679 */ #define _NM_UTILS_MACRO_FIRST(...) __NM_UTILS_MACRO_FIRST_HELPER(__VA_ARGS__, throwaway) #define __NM_UTILS_MACRO_FIRST_HELPER(first, ...) first #define _NM_UTILS_MACRO_REST(...) __NM_UTILS_MACRO_REST_HELPER(__NM_UTILS_MACRO_REST_NUM(__VA_ARGS__), __VA_ARGS__) #define __NM_UTILS_MACRO_REST_HELPER(qty, ...) __NM_UTILS_MACRO_REST_HELPER2(qty, __VA_ARGS__) #define __NM_UTILS_MACRO_REST_HELPER2(qty, ...) __NM_UTILS_MACRO_REST_HELPER_##qty(__VA_ARGS__) #define __NM_UTILS_MACRO_REST_HELPER_ONE(first) #define __NM_UTILS_MACRO_REST_HELPER_TWOORMORE(first, ...) , __VA_ARGS__ #define __NM_UTILS_MACRO_REST_NUM(...) \ __NM_UTILS_MACRO_REST_SELECT_30TH(__VA_ARGS__, \ TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE,\ TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE,\ TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE,\ TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE,\ TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE,\ TWOORMORE, TWOORMORE, TWOORMORE, ONE, throwaway) #define __NM_UTILS_MACRO_REST_SELECT_30TH(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25, a26, a27, a28, a29, a30, ...) a30 /*****************************************************************************/ /* http://stackoverflow.com/a/2124385/354393 */ #define NM_NARG(...) \ _NM_NARG(__VA_ARGS__,_NM_NARG_RSEQ_N()) #define _NM_NARG(...) \ _NM_NARG_ARG_N(__VA_ARGS__) #define _NM_NARG_ARG_N( \ _1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \ _11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \ _21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \ _31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \ _41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \ _51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \ _61,_62,_63,N,...) N #define _NM_NARG_RSEQ_N() \ 63,62,61,60, \ 59,58,57,56,55,54,53,52,51,50, \ 49,48,47,46,45,44,43,42,41,40, \ 39,38,37,36,35,34,33,32,31,30, \ 29,28,27,26,25,24,23,22,21,20, \ 19,18,17,16,15,14,13,12,11,10, \ 9,8,7,6,5,4,3,2,1,0 /*****************************************************************************/ #if defined (__GNUC__) #define _NM_PRAGMA_WARNING_DO(warning) G_STRINGIFY(GCC diagnostic ignored warning) #elif defined (__clang__) #define _NM_PRAGMA_WARNING_DO(warning) G_STRINGIFY(clang diagnostic ignored warning) #endif /* you can only suppress a specific warning that the compiler * understands. Otherwise you will get another compiler warning * about invalid pragma option. * It's not that bad however, because gcc and clang often have the * same name for the same warning. */ #if defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) #define NM_PRAGMA_WARNING_DISABLE(warning) \ _Pragma("GCC diagnostic push") \ _Pragma(_NM_PRAGMA_WARNING_DO(warning)) #elif defined (__clang__) #define NM_PRAGMA_WARNING_DISABLE(warning) \ _Pragma("clang diagnostic push") \ _Pragma(_NM_PRAGMA_WARNING_DO(warning)) #else #define NM_PRAGMA_WARNING_DISABLE(warning) #endif #if defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) #define NM_PRAGMA_WARNING_REENABLE \ _Pragma("GCC diagnostic pop") #elif defined (__clang__) #define NM_PRAGMA_WARNING_REENABLE \ _Pragma("clang diagnostic pop") #else #define NM_PRAGMA_WARNING_REENABLE #endif /*****************************************************************************/ /** * NM_G_ERROR_MSG: * @error: (allow-none): the #GError instance * * All functions must follow the convention that when they * return a failure, they must also set the GError to a valid * message. For external API however, we want to be extra * careful before accessing the error instance. Use NM_G_ERROR_MSG() * which is safe to use on NULL. * * Returns: the error message. **/ static inline const char * NM_G_ERROR_MSG (GError *error) { return error ? (error->message ? : "(null)") : "(no-error)"; \ } /*****************************************************************************/ /* macro to return strlen() of a compile time string. */ #define NM_STRLEN(str) ( sizeof ("" str) - 1 ) /* returns the length of a NULL terminated array of pointers, * like g_strv_length() does. The difference is: * - it operats on arrays of pointers (of any kind, requiring no cast). * - it accepts NULL to return zero. */ #define NM_PTRARRAY_LEN(array) \ ({ \ typeof (*(array)) *const _array = (array); \ gsize _n = 0; \ \ if (_array) { \ _nm_unused typeof (*(_array[0])) *_array_check = _array[0]; \ while (_array[_n]) \ _n++; \ } \ _n; \ }) /* Note: @value is only evaluated when *out_val is present. * Thus, * NM_SET_OUT (out_str, g_strdup ("hallo")); * does the right thing. */ #define NM_SET_OUT(out_val, value) \ G_STMT_START { \ typeof(*(out_val)) *_out_val = (out_val); \ \ if (_out_val) { \ *_out_val = (value); \ } \ } G_STMT_END /*****************************************************************************/ #ifndef _NM_CC_SUPPORT_AUTO_TYPE #if (defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9 ))) #define _NM_CC_SUPPORT_AUTO_TYPE 1 #else #define _NM_CC_SUPPORT_AUTO_TYPE 0 #endif #endif #ifndef _NM_CC_SUPPORT_GENERIC #if (defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9 ))) || (defined (__clang__)) #define _NM_CC_SUPPORT_GENERIC 1 #else #define _NM_CC_SUPPORT_GENERIC 0 #endif #endif #if _NM_CC_SUPPORT_AUTO_TYPE #define _nm_auto_type __auto_type #endif #if _NM_CC_SUPPORT_GENERIC #define _NM_CONSTCAST_FULL_1(type, obj_expr, obj) \ (_Generic ((obj_expr), \ const void *const: ((const type *) (obj)), \ const void * : ((const type *) (obj)), \ void *const: (( type *) (obj)), \ void * : (( type *) (obj)), \ const type *const: ((const type *) (obj)), \ const type * : ((const type *) (obj)), \ type *const: (( type *) (obj)), \ type * : (( type *) (obj)))) #define _NM_CONSTCAST_FULL_2(type, obj_expr, obj, alias_type2) \ (_Generic ((obj_expr), \ const void *const: ((const type *) (obj)), \ const void * : ((const type *) (obj)), \ void *const: (( type *) (obj)), \ void * : (( type *) (obj)), \ const alias_type2 *const: ((const type *) (obj)), \ const alias_type2 * : ((const type *) (obj)), \ alias_type2 *const: (( type *) (obj)), \ alias_type2 * : (( type *) (obj)), \ const type *const: ((const type *) (obj)), \ const type * : ((const type *) (obj)), \ type *const: (( type *) (obj)), \ type * : (( type *) (obj)))) #define _NM_CONSTCAST_FULL_3(type, obj_expr, obj, alias_type2, alias_type3) \ (_Generic ((obj_expr), \ const void *const: ((const type *) (obj)), \ const void * : ((const type *) (obj)), \ void *const: (( type *) (obj)), \ void * : (( type *) (obj)), \ const alias_type2 *const: ((const type *) (obj)), \ const alias_type2 * : ((const type *) (obj)), \ alias_type2 *const: (( type *) (obj)), \ alias_type2 * : (( type *) (obj)), \ const alias_type3 *const: ((const type *) (obj)), \ const alias_type3 * : ((const type *) (obj)), \ alias_type3 *const: (( type *) (obj)), \ alias_type3 * : (( type *) (obj)), \ const type *const: ((const type *) (obj)), \ const type * : ((const type *) (obj)), \ type *const: (( type *) (obj)), \ type * : (( type *) (obj)))) #define _NM_CONSTCAST_FULL_4(type, obj_expr, obj, alias_type2, alias_type3, alias_type4) \ (_Generic ((obj_expr), \ const void *const: ((const type *) (obj)), \ const void * : ((const type *) (obj)), \ void *const: (( type *) (obj)), \ void * : (( type *) (obj)), \ const alias_type2 *const: ((const type *) (obj)), \ const alias_type2 * : ((const type *) (obj)), \ alias_type2 *const: (( type *) (obj)), \ alias_type2 * : (( type *) (obj)), \ const alias_type3 *const: ((const type *) (obj)), \ const alias_type3 * : ((const type *) (obj)), \ alias_type3 *const: (( type *) (obj)), \ alias_type3 * : (( type *) (obj)), \ const alias_type4 *const: ((const type *) (obj)), \ const alias_type4 * : ((const type *) (obj)), \ alias_type4 *const: (( type *) (obj)), \ alias_type4 * : (( type *) (obj)), \ const type *const: ((const type *) (obj)), \ const type * : ((const type *) (obj)), \ type *const: (( type *) (obj)), \ type * : (( type *) (obj)))) #define _NM_CONSTCAST_FULL_x(type, obj_expr, obj, n, ...) (_NM_CONSTCAST_FULL_##n (type, obj_expr, obj, ##__VA_ARGS__)) #define _NM_CONSTCAST_FULL_y(type, obj_expr, obj, n, ...) (_NM_CONSTCAST_FULL_x (type, obj_expr, obj, n, ##__VA_ARGS__)) #define NM_CONSTCAST_FULL( type, obj_expr, obj, ...) (_NM_CONSTCAST_FULL_y (type, obj_expr, obj, NM_NARG (dummy, ##__VA_ARGS__), ##__VA_ARGS__)) #else #define NM_CONSTCAST_FULL( type, obj_expr, obj, ...) ((type *) (obj)) #endif #define NM_CONSTCAST(type, obj, ...) \ NM_CONSTCAST_FULL(type, (obj), (obj), ##__VA_ARGS__) #define NM_GOBJECT_CAST(type, obj, is_check, ...) \ ({ \ const void *_obj = (obj); \ \ nm_assert (_obj || (is_check (_obj))); \ NM_CONSTCAST_FULL (type, (obj), _obj, GObject, ##__VA_ARGS__); \ }) #define NM_GOBJECT_CAST_NON_NULL(type, obj, is_check, ...) \ ({ \ const void *_obj = (obj); \ \ nm_assert (is_check (_obj)); \ NM_CONSTCAST_FULL (type, (obj), _obj, GObject, ##__VA_ARGS__); \ }) #if _NM_CC_SUPPORT_GENERIC /* returns @value, if the type of @value matches @type. * This requires support for C11 _Generic(). If no support is * present, this returns @value directly. * * It's useful to check the let the compiler ensure that @value is * of a certain type. */ #define _NM_ENSURE_TYPE(type, value) (_Generic ((value), type: (value))) #else #define _NM_ENSURE_TYPE(type, value) (value) #endif #if _NM_CC_SUPPORT_GENERIC #define NM_PROPAGATE_CONST(test_expr, ptr) \ (_Generic ((test_expr), \ const typeof (*(test_expr)) *: ((const typeof (*(ptr)) *) (ptr)), \ default: (_Generic ((test_expr), \ typeof (*(test_expr)) *: (ptr))))) #else #define NM_PROPAGATE_CONST(test_expr, ptr) (ptr) #endif /*****************************************************************************/ #define _NM_IN_SET_EVAL_1( op, _x, y) (_x == (y)) #define _NM_IN_SET_EVAL_2( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_1 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_3( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_2 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_4( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_3 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_5( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_4 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_6( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_5 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_7( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_6 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_8( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_7 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_9( op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_8 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_10(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_9 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_11(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_10 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_12(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_11 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_13(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_12 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_14(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_13 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_15(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_14 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_16(op, _x, y, ...) (_x == (y)) op _NM_IN_SET_EVAL_15 (op, _x, __VA_ARGS__) #define _NM_IN_SET_EVAL_N2(op, _x, n, ...) (_NM_IN_SET_EVAL_##n(op, _x, __VA_ARGS__)) #define _NM_IN_SET_EVAL_N(op, type, x, n, ...) \ ({ \ type _x = (x); \ \ /* trigger a -Wenum-compare warning */ \ nm_assert (TRUE || _x == (x)); \ \ !!_NM_IN_SET_EVAL_N2(op, _x, n, __VA_ARGS__); \ }) #define _NM_IN_SET(op, type, x, ...) _NM_IN_SET_EVAL_N(op, type, x, NM_NARG (__VA_ARGS__), __VA_ARGS__) /* Beware that this does short-circuit evaluation (use "||" instead of "|") * which has a possibly unexpected non-function-like behavior. * Use NM_IN_SET_SE if you need all arguments to be evaluted. */ #define NM_IN_SET(x, ...) _NM_IN_SET(||, typeof (x), x, __VA_ARGS__) /* "SE" stands for "side-effect". Contrary to NM_IN_SET(), this does not do * short-circuit evaluation, which can make a difference if the arguments have * side-effects. */ #define NM_IN_SET_SE(x, ...) _NM_IN_SET(|, typeof (x), x, __VA_ARGS__) /* the *_TYPED forms allow to explicitly select the type of "x". This is useful * if "x" doesn't support typeof (bitfields) or you want to gracefully convert * a type using automatic type conversion rules (but not forcing the conversion * with a cast). */ #define NM_IN_SET_TYPED(type, x, ...) _NM_IN_SET(||, type, x, __VA_ARGS__) #define NM_IN_SET_SE_TYPED(type, x, ...) _NM_IN_SET(|, type, x, __VA_ARGS__) /*****************************************************************************/ static inline gboolean _NM_IN_STRSET_streq (const char *x, const char *s) { return s && strcmp (x, s) == 0; } #define _NM_IN_STRSET_EVAL_1( op, _x, y) _NM_IN_STRSET_streq (_x, y) #define _NM_IN_STRSET_EVAL_2( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_1 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_3( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_2 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_4( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_3 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_5( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_4 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_6( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_5 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_7( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_6 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_8( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_7 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_9( op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_8 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_10(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_9 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_11(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_10 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_12(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_11 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_13(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_12 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_14(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_13 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_15(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_14 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_16(op, _x, y, ...) _NM_IN_STRSET_streq (_x, y) op _NM_IN_STRSET_EVAL_15 (op, _x, __VA_ARGS__) #define _NM_IN_STRSET_EVAL_N2(op, _x, n, ...) (_NM_IN_STRSET_EVAL_##n(op, _x, __VA_ARGS__)) #define _NM_IN_STRSET_EVAL_N(op, x, n, ...) \ ({ \ const char *_x = (x); \ ( ((_x == NULL) && _NM_IN_SET_EVAL_N2 (op, ((const char *) NULL), n, __VA_ARGS__)) \ || ((_x != NULL) && _NM_IN_STRSET_EVAL_N2 (op, _x, n, __VA_ARGS__)) \ ); \ }) /* Beware that this does short-circuit evaluation (use "||" instead of "|") * which has a possibly unexpected non-function-like behavior. * Use NM_IN_STRSET_SE if you need all arguments to be evaluted. */ #define NM_IN_STRSET(x, ...) _NM_IN_STRSET_EVAL_N(||, x, NM_NARG (__VA_ARGS__), __VA_ARGS__) /* "SE" stands for "side-effect". Contrary to NM_IN_STRSET(), this does not do * short-circuit evaluation, which can make a difference if the arguments have * side-effects. */ #define NM_IN_STRSET_SE(x, ...) _NM_IN_STRSET_EVAL_N(|, x, NM_NARG (__VA_ARGS__), __VA_ARGS__) #define NM_STRCHAR_ALL(str, ch_iter, predicate) \ ({ \ gboolean _val = TRUE; \ const char *_str = (str); \ \ if (_str) { \ for (;;) { \ const char ch_iter = _str[0]; \ \ if (ch_iter != '\0') { \ if (predicate) {\ _str++; \ continue; \ } \ _val = FALSE; \ } \ break; \ } \ } \ _val; \ }) #define NM_STRCHAR_ANY(str, ch_iter, predicate) \ ({ \ gboolean _val = FALSE; \ const char *_str = (str); \ \ if (_str) { \ for (;;) { \ const char ch_iter = _str[0]; \ \ if (ch_iter != '\0') { \ if (predicate) { \ ; \ } else { \ _str++; \ continue; \ } \ _val = TRUE; \ } \ break; \ } \ } \ _val; \ }) /*****************************************************************************/ /* NM_CACHED_QUARK() returns the GQuark for @string, but caches * it in a static variable to speed up future lookups. * * @string must be a string literal. */ #define NM_CACHED_QUARK(string) \ ({ \ static GQuark _nm_cached_quark = 0; \ \ (G_LIKELY (_nm_cached_quark != 0) \ ? _nm_cached_quark \ : (_nm_cached_quark = g_quark_from_static_string (""string""))); \ }) /* NM_CACHED_QUARK_FCN() is essentially the same as G_DEFINE_QUARK * with two differences: * - @string must be a quoted string-literal * - @fcn must be the full function name, while G_DEFINE_QUARK() appends * "_quark" to the function name. * Both properties of G_DEFINE_QUARK() are non favorable, because you can no * longer grep for string/fcn -- unless you are aware that you are searching * for G_DEFINE_QUARK() and omit quotes / append _quark(). With NM_CACHED_QUARK_FCN(), * ctags/cscope can locate the use of @fcn (though it doesn't recognize that * NM_CACHED_QUARK_FCN() defines it). */ #define NM_CACHED_QUARK_FCN(string, fcn) \ GQuark \ fcn (void) \ { \ return NM_CACHED_QUARK (string); \ } /*****************************************************************************/ #define nm_streq(s1, s2) (strcmp (s1, s2) == 0) #define nm_streq0(s1, s2) (g_strcmp0 (s1, s2) == 0) /*****************************************************************************/ static inline GString * nm_gstring_prepare (GString **l) { if (*l) g_string_set_size (*l, 0); else *l = g_string_sized_new (30); return *l; } static inline const char * nm_str_not_empty (const char *str) { return str && str[0] ? str : NULL; } static inline char * nm_strdup_not_empty (const char *str) { return str && str[0] ? g_strdup (str) : NULL; } static inline char * nm_str_realloc (char *str) { gs_free char *s = str; /* Returns a new clone of @str and frees @str. The point is that @str * possibly points to a larger chunck of memory. We want to freshly allocate * a buffer. * * We could use realloc(), but that might not do anything or leave * @str in its memory pool for chunks of a different size (bad for * fragmentation). * * This is only useful when we want to keep the buffer around for a long * time and want to re-allocate a more optimal buffer. */ return g_strdup (s); } /*****************************************************************************/ #define NM_PRINT_FMT_QUOTED(cond, prefix, str, suffix, str_else) \ (cond) ? (prefix) : "", \ (cond) ? (str) : (str_else), \ (cond) ? (suffix) : "" #define NM_PRINT_FMT_QUOTE_STRING(arg) NM_PRINT_FMT_QUOTED((arg), "\"", (arg), "\"", "(null)") /*****************************************************************************/ /* glib/C provides the following kind of assertions: * - assert() -- disable with NDEBUG * - g_return_if_fail() -- disable with G_DISABLE_CHECKS * - g_assert() -- disable with G_DISABLE_ASSERT * but they are all enabled by default and usually even production builds have * these kind of assertions enabled. It also means, that disabling assertions * is an untested configuration, and might have bugs. * * Add our own assertion macro nm_assert(), which is disabled by default and must * be explicitly enabled. They are useful for more expensive checks or checks that * depend less on runtime conditions (that is, are generally expected to be true). */ #ifndef NM_MORE_ASSERTS #define NM_MORE_ASSERTS 0 #endif #if NM_MORE_ASSERTS #define nm_assert(cond) G_STMT_START { g_assert (cond); } G_STMT_END #define nm_assert_se(cond) G_STMT_START { if (G_LIKELY (cond)) { ; } else { g_assert (FALSE && (cond)); } } G_STMT_END #define nm_assert_not_reached() G_STMT_START { g_assert_not_reached (); } G_STMT_END #else #define nm_assert(cond) G_STMT_START { if (FALSE) { if (cond) { } } } G_STMT_END #define nm_assert_se(cond) G_STMT_START { if (G_LIKELY (cond)) { ; } } G_STMT_END #define nm_assert_not_reached() G_STMT_START { ; } G_STMT_END #endif /*****************************************************************************/ #define NM_GOBJECT_PROPERTIES_DEFINE_BASE(...) \ typedef enum { \ _PROPERTY_ENUMS_0, \ __VA_ARGS__ \ _PROPERTY_ENUMS_LAST, \ } _PropertyEnums; \ static GParamSpec *obj_properties[_PROPERTY_ENUMS_LAST] = { NULL, } #define NM_GOBJECT_PROPERTIES_DEFINE(obj_type, ...) \ NM_GOBJECT_PROPERTIES_DEFINE_BASE (__VA_ARGS__); \ static inline void \ _notify (obj_type *obj, _PropertyEnums prop) \ { \ nm_assert (G_IS_OBJECT (obj)); \ nm_assert ((gsize) prop < G_N_ELEMENTS (obj_properties)); \ g_object_notify_by_pspec ((GObject *) obj, obj_properties[prop]); \ } /*****************************************************************************/ #define _NM_GET_PRIVATE(self, type, is_check, ...) (&(NM_GOBJECT_CAST_NON_NULL (type, (self), is_check, ##__VA_ARGS__)->_priv)) #if _NM_CC_SUPPORT_AUTO_TYPE #define _NM_GET_PRIVATE_PTR(self, type, is_check, ...) \ ({ \ _nm_auto_type _self = NM_GOBJECT_CAST_NON_NULL (type, (self), is_check, ##__VA_ARGS__); \ \ NM_PROPAGATE_CONST (_self, _self->_priv); \ }) #else #define _NM_GET_PRIVATE_PTR(self, type, is_check, ...) (NM_GOBJECT_CAST_NON_NULL (type, (self), is_check, ##__VA_ARGS__)->_priv) #endif /*****************************************************************************/ static inline gpointer nm_g_object_ref (gpointer obj) { /* g_object_ref() doesn't accept NULL. */ if (obj) g_object_ref (obj); return obj; } #define nm_g_object_ref(obj) ((typeof (obj)) nm_g_object_ref (obj)) static inline void nm_g_object_unref (gpointer obj) { /* g_object_unref() doesn't accept NULL. Usully, we workaround that * by using g_clear_object(), but sometimes that is not convinient * (for example as as destroy function for a hash table that can contain * NULL values). */ if (obj) g_object_unref (obj); } /* Assigns GObject @obj to destination @pdst, and takes an additional ref. * The previous value of @pdst is unrefed. * * It makes sure to first increase the ref-count of @obj, and handles %NULL * @obj correctly. * */ #define nm_g_object_ref_set(pp, obj) \ ({ \ typeof (*(pp)) *const _pp = (pp); \ typeof (**_pp) *const _obj = (obj); \ typeof (**_pp) *_p; \ gboolean _changed = FALSE; \ \ if ( _pp \ && ((_p = *_pp) != _obj)) { \ if (_obj) { \ nm_assert (G_IS_OBJECT (_obj)); \ g_object_ref (_obj); \ } \ if (_p) { \ nm_assert (G_IS_OBJECT (_p)); \ *_pp = NULL; \ g_object_unref (_p); \ } \ *_pp = _obj; \ _changed = TRUE; \ } \ _changed; \ }) /* basically, replaces * g_clear_pointer (&location, g_free) * with * nm_clear_g_free (&location) * * Another advantage is that by using a macro and typeof(), it is more * typesafe and gives you for example a compiler warning when pp is a const * pointer or points to a const-pointer. */ #define nm_clear_g_free(pp) \ ({ \ typeof (*(pp)) *_pp = (pp); \ typeof (**_pp) *_p; \ gboolean _changed = FALSE; \ \ if ( _pp \ && (_p = *_pp)) { \ *_pp = NULL; \ g_free (_p); \ _changed = TRUE; \ } \ _changed; \ }) #define nm_clear_g_object(pp) \ ({ \ typeof (*(pp)) *_pp = (pp); \ typeof (**_pp) *_p; \ gboolean _changed = FALSE; \ \ if ( _pp \ && (_p = *_pp)) { \ nm_assert (G_IS_OBJECT (_p)); \ *_pp = NULL; \ g_object_unref (_p); \ _changed = TRUE; \ } \ _changed; \ }) static inline gboolean nm_clear_g_source (guint *id) { if (id && *id) { g_source_remove (*id); *id = 0; return TRUE; } return FALSE; } static inline gboolean nm_clear_g_signal_handler (gpointer self, gulong *id) { if (id && *id) { g_signal_handler_disconnect (self, *id); *id = 0; return TRUE; } return FALSE; } static inline gboolean nm_clear_g_variant (GVariant **variant) { if (variant && *variant) { g_variant_unref (*variant); *variant = NULL; return TRUE; } return FALSE; } static inline gboolean nm_clear_g_cancellable (GCancellable **cancellable) { if (cancellable && *cancellable) { g_cancellable_cancel (*cancellable); g_object_unref (*cancellable); *cancellable = NULL; return TRUE; } return FALSE; } /*****************************************************************************/ /* Determine whether @x is a power of two (@x being an integer type). * Basically, this returns TRUE, if @x has exactly one bit set. * For negative values and zero, this always returns FALSE. */ #define nm_utils_is_power_of_two(x) ({ \ typeof(x) __x = (x); \ \ ( (__x > ((typeof(__x)) 0)) \ && ((__x & (__x - (((typeof(__x)) 1)))) == ((typeof(__x)) 0))); \ }) /*****************************************************************************/ #define NM_UTILS_LOOKUP_DEFAULT(v) return (v) #define NM_UTILS_LOOKUP_DEFAULT_WARN(v) g_return_val_if_reached (v) #define NM_UTILS_LOOKUP_DEFAULT_NM_ASSERT(v) { nm_assert_not_reached (); return (v); } #define NM_UTILS_LOOKUP_ITEM(v, n) (void) 0; case v: return (n); (void) 0 #define NM_UTILS_LOOKUP_STR_ITEM(v, n) NM_UTILS_LOOKUP_ITEM(v, ""n"") #define NM_UTILS_LOOKUP_ITEM_IGNORE(v) (void) 0; case v: break; (void) 0 #define NM_UTILS_LOOKUP_ITEM_IGNORE_OTHER() (void) 0; default: break; (void) 0 #define _NM_UTILS_LOOKUP_DEFINE(scope, fcn_name, lookup_type, result_type, unknown_val, ...) \ scope result_type \ fcn_name (lookup_type val) \ { \ switch (val) { \ (void) 0, \ __VA_ARGS__ \ (void) 0; \ }; \ { unknown_val; } \ } #define NM_UTILS_LOOKUP_STR_DEFINE(fcn_name, lookup_type, unknown_val, ...) \ _NM_UTILS_LOOKUP_DEFINE (, fcn_name, lookup_type, const char *, unknown_val, __VA_ARGS__) #define NM_UTILS_LOOKUP_STR_DEFINE_STATIC(fcn_name, lookup_type, unknown_val, ...) \ _NM_UTILS_LOOKUP_DEFINE (static, fcn_name, lookup_type, const char *, unknown_val, __VA_ARGS__) /* Call the string-lookup-table function @fcn_name. If the function returns * %NULL, the numeric index is converted to string using a alloca() buffer. * Beware: this macro uses alloca(). */ #define NM_UTILS_LOOKUP_STR(fcn_name, idx) \ ({ \ typeof (idx) _idx = (idx); \ const char *_s; \ \ _s = fcn_name (_idx); \ if (!_s) { \ _s = g_alloca (30); \ \ g_snprintf ((char *) _s, 30, "(%lld)", (long long) _idx); \ } \ _s; \ }) /*****************************************************************************/ /* check if @flags has exactly one flag (@check) set. You should call this * only with @check being a compile time constant and a power of two. */ #define NM_FLAGS_HAS(flags, check) \ ( G_STATIC_ASSERT_EXPR ((check) > 0 && ((check) & ((check) - 1)) == 0), NM_FLAGS_ANY ((flags), (check)) ) #define NM_FLAGS_ANY(flags, check) ( ( ((flags) & (check)) != 0 ) ? TRUE : FALSE ) #define NM_FLAGS_ALL(flags, check) ( ( ((flags) & (check)) == (check) ) ? TRUE : FALSE ) #define NM_FLAGS_SET(flags, val) ({ \ const typeof(flags) _flags = (flags); \ const typeof(flags) _val = (val); \ \ _flags | _val; \ }) #define NM_FLAGS_UNSET(flags, val) ({ \ const typeof(flags) _flags = (flags); \ const typeof(flags) _val = (val); \ \ _flags & (~_val); \ }) #define NM_FLAGS_ASSIGN(flags, val, assign) ({ \ const typeof(flags) _flags = (flags); \ const typeof(flags) _val = (val); \ \ (assign) \ ? _flags | (_val) \ : _flags & (~_val); \ }) /*****************************************************************************/ #define _NM_BACKPORT_SYMBOL_IMPL(VERSION, RETURN_TYPE, ORIG_FUNC, VERSIONED_FUNC, ARGS_TYPED, ARGS) \ RETURN_TYPE VERSIONED_FUNC ARGS_TYPED; \ RETURN_TYPE VERSIONED_FUNC ARGS_TYPED \ { \ return ORIG_FUNC ARGS; \ } \ RETURN_TYPE ORIG_FUNC ARGS_TYPED; \ __asm__(".symver "G_STRINGIFY(VERSIONED_FUNC)", "G_STRINGIFY(ORIG_FUNC)"@"G_STRINGIFY(VERSION)) #define NM_BACKPORT_SYMBOL(VERSION, RETURN_TYPE, FUNC, ARGS_TYPED, ARGS) \ _NM_BACKPORT_SYMBOL_IMPL(VERSION, RETURN_TYPE, FUNC, _##FUNC##_##VERSION, ARGS_TYPED, ARGS) /*****************************************************************************/ #define nm_str_skip_leading_spaces(str) \ ({ \ typeof (*(str)) *_str = (str); \ _nm_unused const char *_str_type_check = _str; \ \ if (_str) { \ while (g_ascii_isspace (_str[0])) \ _str++; \ } \ _str; \ }) static inline char * nm_strstrip (char *str) { /* g_strstrip doesn't like NULL. */ return str ? g_strstrip (str) : NULL; } static inline const char * nm_strstrip_avoid_copy (const char *str, char **str_free) { gsize l; char *s; nm_assert (str_free && !*str_free); if (!str) return NULL; str = nm_str_skip_leading_spaces (str); l = strlen (str); if ( l == 0 || !g_ascii_isspace (str[l - 1])) return str; while ( l > 0 && g_ascii_isspace (str[l - 1])) l--; s = g_new (char, l + 1); memcpy (s, str, l); s[l] = '\0'; *str_free = s; return s; } /* g_ptr_array_sort()'s compare function takes pointers to the * value. Thus, you cannot use strcmp directly. You can use * nm_strcmp_p(). * * Like strcmp(), this function is not forgiving to accept %NULL. */ static inline int nm_strcmp_p (gconstpointer a, gconstpointer b) { const char *s1 = *((const char **) a); const char *s2 = *((const char **) b); return strcmp (s1, s2); } /* like nm_strcmp_p(), suitable for g_ptr_array_sort_with_data(). * g_ptr_array_sort() just casts nm_strcmp_p() to a function of different * signature. I guess, in glib there are knowledgeable people that ensure * that this additional argument doesn't cause problems due to different ABI * for every architecture that glib supports. * For NetworkManager, we'd rather avoid such stunts. **/ static inline int nm_strcmp_p_with_data (gconstpointer a, gconstpointer b, gpointer user_data) { const char *s1 = *((const char **) a); const char *s2 = *((const char **) b); return strcmp (s1, s2); } static inline int nm_cmp_uint32_p_with_data (gconstpointer p_a, gconstpointer p_b, gpointer user_data) { const guint32 a = *((const guint32 *) p_a); const guint32 b = *((const guint32 *) p_b); if (a < b) return -1; if (a > b) return 1; return 0; } /*****************************************************************************/ /* Taken from systemd's UNIQ_T and UNIQ macros. */ #define NM_UNIQ_T(x, uniq) G_PASTE(__unique_prefix_, G_PASTE(x, uniq)) #define NM_UNIQ __COUNTER__ /*****************************************************************************/ /* glib's MIN()/MAX() macros don't have function-like behavior, in that they evaluate * the argument possibly twice. * * Taken from systemd's MIN()/MAX() macros. */ #define NM_MIN(a, b) __NM_MIN(NM_UNIQ, a, NM_UNIQ, b) #define __NM_MIN(aq, a, bq, b) \ ({ \ typeof (a) NM_UNIQ_T(A, aq) = (a); \ typeof (b) NM_UNIQ_T(B, bq) = (b); \ ((NM_UNIQ_T(A, aq) < NM_UNIQ_T(B, bq)) ? NM_UNIQ_T(A, aq) : NM_UNIQ_T(B, bq)); \ }) #define NM_MAX(a, b) __NM_MAX(NM_UNIQ, a, NM_UNIQ, b) #define __NM_MAX(aq, a, bq, b) \ ({ \ typeof (a) NM_UNIQ_T(A, aq) = (a); \ typeof (b) NM_UNIQ_T(B, bq) = (b); \ ((NM_UNIQ_T(A, aq) > NM_UNIQ_T(B, bq)) ? NM_UNIQ_T(A, aq) : NM_UNIQ_T(B, bq)); \ }) #define NM_CLAMP(x, low, high) __NM_CLAMP(NM_UNIQ, x, NM_UNIQ, low, NM_UNIQ, high) #define __NM_CLAMP(xq, x, lowq, low, highq, high) \ ({ \ typeof(x)NM_UNIQ_T(X,xq) = (x); \ typeof(low) NM_UNIQ_T(LOW,lowq) = (low); \ typeof(high) NM_UNIQ_T(HIGH,highq) = (high); \ \ ( (NM_UNIQ_T(X,xq) > NM_UNIQ_T(HIGH,highq)) \ ? NM_UNIQ_T(HIGH,highq) \ : (NM_UNIQ_T(X,xq) < NM_UNIQ_T(LOW,lowq)) \ ? NM_UNIQ_T(LOW,lowq) \ : NM_UNIQ_T(X,xq)); \ }) /*****************************************************************************/ static inline guint nm_encode_version (guint major, guint minor, guint micro) { /* analog to the preprocessor macro NM_ENCODE_VERSION(). */ return (major << 16) | (minor << 8) | micro; } static inline void nm_decode_version (guint version, guint *major, guint *minor, guint *micro) { *major = (version & 0xFFFF0000u) >> 16; *minor = (version & 0x0000FF00u) >> 8; *micro = (version & 0x000000FFu); } /*****************************************************************************/ /* taken from systemd's DECIMAL_STR_MAX() * * Returns the number of chars needed to format variables of the * specified type as a decimal string. Adds in extra space for a * negative '-' prefix (hence works correctly on signed * types). Includes space for the trailing NUL. */ #define NM_DECIMAL_STR_MAX(type) \ (2+(sizeof(type) <= 1 ? 3 : \ sizeof(type) <= 2 ? 5 : \ sizeof(type) <= 4 ? 10 : \ sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)]))) /*****************************************************************************/ /* if @str is NULL, return "(null)". Otherwise, allocate a buffer using * alloca() of and fill it with @str. @str will be quoted with double quote. * If @str is longer then @trunc_at, the string is truncated and the closing * quote is instead '^' to indicate truncation. * * Thus, the maximum stack allocated buffer will be @trunc_at+3. */ #define nm_strquote_a(trunc_at, str) \ ({ \ const char *const _str = (str); \ \ (_str \ ? ({ \ const gsize _trunc_at = (trunc_at); \ const gsize _strlen_trunc = NM_MIN (strlen (_str), _trunc_at); \ char *_buf; \ \ _buf = g_alloca (_strlen_trunc + 3); \ _buf[0] = '"'; \ memcpy (&_buf[1], _str, _strlen_trunc); \ _buf[_strlen_trunc + 1] = _str[_strlen_trunc] ? '^' : '"'; \ _buf[_strlen_trunc + 2] = '\0'; \ _buf; \ }) \ : "(null)"); \ }) #define nm_sprintf_buf(buf, format, ...) \ ({ \ char * _buf = (buf); \ int _buf_len; \ \ /* some static assert trying to ensure that the buffer is statically allocated. * It disallows a buffer size of sizeof(gpointer) to catch that. */ \ G_STATIC_ASSERT (G_N_ELEMENTS (buf) == sizeof (buf) && sizeof (buf) != sizeof (char *)); \ _buf_len = g_snprintf (_buf, sizeof (buf), \ ""format"", ##__VA_ARGS__); \ nm_assert (_buf_len < sizeof (buf)); \ _buf; \ }) #define nm_sprintf_bufa(n_elements, format, ...) \ ({ \ char *_buf; \ int _buf_len; \ typeof (n_elements) _n_elements = (n_elements); \ \ _buf = g_alloca (_n_elements); \ _buf_len = g_snprintf (_buf, _n_elements, \ ""format"", ##__VA_ARGS__); \ nm_assert (_buf_len < _n_elements); \ _buf; \ }) /* aims to alloca() a buffer and fill it with printf(format, name). * Note that format must not contain any format specifier except * "%s". * If the resulting string would be too large for stack allocation, * it allocates a buffer with g_malloc() and assigns it to *p_val_to_free. */ #define nm_construct_name_a(format, name, p_val_to_free) \ ({ \ const char *const _name = (name); \ char **const _p_val_to_free = (p_val_to_free); \ const gsize _name_len = strlen (_name); \ char *_buf2; \ \ nm_assert (_p_val_to_free && !*_p_val_to_free); \ if (NM_STRLEN (format) + _name_len < 200) \ _buf2 = nm_sprintf_bufa (NM_STRLEN (format) + _name_len, format, _name); \ else { \ _buf2 = g_strdup_printf (format, _name); \ *_p_val_to_free = _buf2; \ } \ (const char *) _buf2; \ }) /*****************************************************************************/ /** * The boolean type _Bool is C99 while we mostly stick to C89. However, _Bool is too * convinient to miss and is effectively available in gcc and clang. So, just use it. * * Usually, one would include "stdbool.h" to get the "bool" define which aliases * _Bool. We provide this define here, because we want to make use of it anywhere. * (also, stdbool.h is again C99). * * Using _Bool has advantages over gboolean: * * - commonly _Bool is one byte large, instead of gboolean's 4 bytes (because gboolean * is a typedef for gint). Especially when having boolean fields in a struct, we can * thereby easily save some space. * * - _Bool type guarantees that two "true" expressions compare equal. E.g. the follwing * will not work: * gboolean v1 = 1; * gboolean v2 = 2; * g_assert_cmpint (v1, ==, v2); // will fail * For that, we often to use !! to coerce gboolean values to 0 or 1: * g_assert_cmpint (!!v2, ==, TRUE); * With _Bool type, this will be handled properly by the compiler. * * - For structs, we might want to safe even more space and use bitfields: * struct s1 { * gboolean v1:1; * }; * But the problem here is that gboolean is signed, so that * v1 will be either 0 or -1 (not 1, TRUE). Thus, the following * fails: * struct s1 s = { .v1 = TRUE, }; * g_assert_cmpint (s1.v1, ==, TRUE); * It will however work just fine with bool/_Bool while retaining the * notion of having a boolean value. * * Also, add the defines for "true" and "false". Those are nicely highlighted by the editor * as special types, contrary to glib's "TRUE"/"FALSE". */ #ifndef bool #define bool _Bool #define true 1 #define false 0 #endif #ifdef _G_BOOLEAN_EXPR /* g_assert() uses G_LIKELY(), which in turn uses _G_BOOLEAN_EXPR(). * As glib's implementation uses a local variable _g_boolean_var_, * we cannot do * g_assert (some_macro ()); * where some_macro() itself expands to ({g_assert(); ...}). * In other words, you cannot have a g_assert() inside a g_assert() * without getting a -Werror=shadow failure. * * Workaround that by re-defining _G_BOOLEAN_EXPR() **/ #undef _G_BOOLEAN_EXPR #define __NM_G_BOOLEAN_EXPR_IMPL(v, expr) \ ({ \ int NM_UNIQ_T(V, v); \ \ if (expr) \ NM_UNIQ_T(V, v) = 1; \ else \ NM_UNIQ_T(V, v) = 0; \ NM_UNIQ_T(V, v); \ }) #define _G_BOOLEAN_EXPR(expr) __NM_G_BOOLEAN_EXPR_IMPL (NM_UNIQ, expr) #endif /*****************************************************************************/ static inline int nm_steal_fd (int *p_fd) { int fd; if ( p_fd && ((fd = *p_fd) >= 0)) { *p_fd = -1; return fd; } return -1; } /** * nm_close: * * Like close() but throws an assertion if the input fd is * invalid. Closing an invalid fd is a programming error, so * it's better to catch it early. */ static inline int nm_close (int fd) { int r; r = close (fd); nm_assert (r != -1 || fd < 0 || errno != EBADF); return r; } #endif /* __NM_MACROS_INTERNAL_H__ */