| /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ |
| /* A GNU-like <signal.h>. |
| |
| Copyright (C) 2006-2019 Free Software Foundation, 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 3 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 <https://www.gnu.org/licenses/>. */ |
| |
| #if __GNUC__ >= 3 |
| #pragma GCC system_header |
| #endif |
| |
| |
| #if defined __need_sig_atomic_t || defined __need_sigset_t || defined _GL_ALREADY_INCLUDING_SIGNAL_H || (defined _SIGNAL_H && !defined __SIZEOF_PTHREAD_MUTEX_T) |
| /* Special invocation convention: |
| - Inside glibc header files. |
| - On glibc systems we have a sequence of nested includes |
| <signal.h> -> <ucontext.h> -> <signal.h>. |
| In this situation, the functions are not yet declared, therefore we cannot |
| provide the C++ aliases. |
| - On glibc systems with GCC 4.3 we have a sequence of nested includes |
| <csignal> -> </usr/include/signal.h> -> <sys/ucontext.h> -> <signal.h>. |
| In this situation, some of the functions are not yet declared, therefore |
| we cannot provide the C++ aliases. */ |
| |
| # include_next <signal.h> |
| |
| #else |
| /* Normal invocation convention. */ |
| |
| #ifndef _GL_SIGNAL_H |
| |
| #define _GL_ALREADY_INCLUDING_SIGNAL_H |
| |
| /* Define pid_t, uid_t. |
| Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. |
| On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes |
| us; so include <sys/types.h> now, before the second inclusion guard. */ |
| #include <sys/types.h> |
| |
| /* The include_next requires a split double-inclusion guard. */ |
| #include_next <signal.h> |
| |
| #undef _GL_ALREADY_INCLUDING_SIGNAL_H |
| |
| #ifndef _GL_SIGNAL_H |
| #define _GL_SIGNAL_H |
| |
| /* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android |
| declare pthread_sigmask in <pthread.h>, not in <signal.h>. |
| But avoid namespace pollution on glibc systems.*/ |
| #if (0 || defined GNULIB_POSIXCHECK) \ |
| && ((defined __APPLE__ && defined __MACH__) \ |
| || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ \ |
| || defined __sun || defined __ANDROID__) \ |
| && ! defined __GLIBC__ |
| # include <pthread.h> |
| #endif |
| |
| /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ |
| /* C++ compatible function declaration macros. |
| Copyright (C) 2010-2019 Free Software Foundation, 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 3 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 <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef _GL_CXXDEFS_H |
| #define _GL_CXXDEFS_H |
| |
| /* Begin/end the GNULIB_NAMESPACE namespace. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE { |
| # define _GL_END_NAMESPACE } |
| #else |
| # define _GL_BEGIN_NAMESPACE |
| # define _GL_END_NAMESPACE |
| #endif |
| |
| /* The three most frequent use cases of these macros are: |
| |
| * For providing a substitute for a function that is missing on some |
| platforms, but is declared and works fine on the platforms on which |
| it exists: |
| |
| #if @GNULIB_FOO@ |
| # if !@HAVE_FOO@ |
| _GL_FUNCDECL_SYS (foo, ...); |
| # endif |
| _GL_CXXALIAS_SYS (foo, ...); |
| _GL_CXXALIASWARN (foo); |
| #elif defined GNULIB_POSIXCHECK |
| ... |
| #endif |
| |
| * For providing a replacement for a function that exists on all platforms, |
| but is broken/insufficient and needs to be replaced on some platforms: |
| |
| #if @GNULIB_FOO@ |
| # if @REPLACE_FOO@ |
| # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| # undef foo |
| # define foo rpl_foo |
| # endif |
| _GL_FUNCDECL_RPL (foo, ...); |
| _GL_CXXALIAS_RPL (foo, ...); |
| # else |
| _GL_CXXALIAS_SYS (foo, ...); |
| # endif |
| _GL_CXXALIASWARN (foo); |
| #elif defined GNULIB_POSIXCHECK |
| ... |
| #endif |
| |
| * For providing a replacement for a function that exists on some platforms |
| but is broken/insufficient and needs to be replaced on some of them and |
| is additionally either missing or undeclared on some other platforms: |
| |
| #if @GNULIB_FOO@ |
| # if @REPLACE_FOO@ |
| # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| # undef foo |
| # define foo rpl_foo |
| # endif |
| _GL_FUNCDECL_RPL (foo, ...); |
| _GL_CXXALIAS_RPL (foo, ...); |
| # else |
| # if !@HAVE_FOO@ or if !@HAVE_DECL_FOO@ |
| _GL_FUNCDECL_SYS (foo, ...); |
| # endif |
| _GL_CXXALIAS_SYS (foo, ...); |
| # endif |
| _GL_CXXALIASWARN (foo); |
| #elif defined GNULIB_POSIXCHECK |
| ... |
| #endif |
| */ |
| |
| /* _GL_EXTERN_C declaration; |
| performs the declaration with C linkage. */ |
| #if defined __cplusplus |
| # define _GL_EXTERN_C extern "C" |
| #else |
| # define _GL_EXTERN_C extern |
| #endif |
| |
| /* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes); |
| declares a replacement function, named rpl_func, with the given prototype, |
| consisting of return type, parameters, and attributes. |
| Example: |
| _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) |
| _GL_ARG_NONNULL ((1))); |
| */ |
| #define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \ |
| _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes) |
| #define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \ |
| _GL_EXTERN_C rettype rpl_func parameters_and_attributes |
| |
| /* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes); |
| declares the system function, named func, with the given prototype, |
| consisting of return type, parameters, and attributes. |
| Example: |
| _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...) |
| _GL_ARG_NONNULL ((1))); |
| */ |
| #define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \ |
| _GL_EXTERN_C rettype func parameters_and_attributes |
| |
| /* _GL_CXXALIAS_RPL (func, rettype, parameters); |
| declares a C++ alias called GNULIB_NAMESPACE::func |
| that redirects to rpl_func, if GNULIB_NAMESPACE is defined. |
| Example: |
| _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); |
| |
| Wrapping rpl_func in an object with an inline conversion operator |
| avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is |
| actually used in the program. */ |
| #define _GL_CXXALIAS_RPL(func,rettype,parameters) \ |
| _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters) |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \ |
| namespace GNULIB_NAMESPACE \ |
| { \ |
| static const struct _gl_ ## func ## _wrapper \ |
| { \ |
| typedef rettype (*type) parameters; \ |
| \ |
| inline operator type () const \ |
| { \ |
| return ::rpl_func; \ |
| } \ |
| } func = {}; \ |
| } \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #else |
| # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| /* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters); |
| is like _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters); |
| except that the C function rpl_func may have a slightly different |
| declaration. A cast is used to silence the "invalid conversion" error |
| that would otherwise occur. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \ |
| namespace GNULIB_NAMESPACE \ |
| { \ |
| static const struct _gl_ ## func ## _wrapper \ |
| { \ |
| typedef rettype (*type) parameters; \ |
| \ |
| inline operator type () const \ |
| { \ |
| return reinterpret_cast<type>(::rpl_func); \ |
| } \ |
| } func = {}; \ |
| } \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #else |
| # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| /* _GL_CXXALIAS_SYS (func, rettype, parameters); |
| declares a C++ alias called GNULIB_NAMESPACE::func |
| that redirects to the system provided function func, if GNULIB_NAMESPACE |
| is defined. |
| Example: |
| _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); |
| |
| Wrapping func in an object with an inline conversion operator |
| avoids a reference to func unless GNULIB_NAMESPACE::func is |
| actually used in the program. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_CXXALIAS_SYS(func,rettype,parameters) \ |
| namespace GNULIB_NAMESPACE \ |
| { \ |
| static const struct _gl_ ## func ## _wrapper \ |
| { \ |
| typedef rettype (*type) parameters; \ |
| \ |
| inline operator type () const \ |
| { \ |
| return ::func; \ |
| } \ |
| } func = {}; \ |
| } \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #else |
| # define _GL_CXXALIAS_SYS(func,rettype,parameters) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| /* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters); |
| is like _GL_CXXALIAS_SYS (func, rettype, parameters); |
| except that the C function func may have a slightly different declaration. |
| A cast is used to silence the "invalid conversion" error that would |
| otherwise occur. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \ |
| namespace GNULIB_NAMESPACE \ |
| { \ |
| static const struct _gl_ ## func ## _wrapper \ |
| { \ |
| typedef rettype (*type) parameters; \ |
| \ |
| inline operator type () const \ |
| { \ |
| return reinterpret_cast<type>(::func); \ |
| } \ |
| } func = {}; \ |
| } \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #else |
| # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| /* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2); |
| is like _GL_CXXALIAS_SYS (func, rettype, parameters); |
| except that the C function is picked among a set of overloaded functions, |
| namely the one with rettype2 and parameters2. Two consecutive casts |
| are used to silence the "cannot find a match" and "invalid conversion" |
| errors that would otherwise occur. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| /* The outer cast must be a reinterpret_cast. |
| The inner cast: When the function is defined as a set of overloaded |
| functions, it works as a static_cast<>, choosing the designated variant. |
| When the function is defined as a single variant, it works as a |
| reinterpret_cast<>. The parenthesized cast syntax works both ways. */ |
| # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \ |
| namespace GNULIB_NAMESPACE \ |
| { \ |
| static const struct _gl_ ## func ## _wrapper \ |
| { \ |
| typedef rettype (*type) parameters; \ |
| \ |
| inline operator type () const \ |
| { \ |
| return reinterpret_cast<type>((rettype2 (*) parameters2)(::func)); \ |
| } \ |
| } func = {}; \ |
| } \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #else |
| # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| /* _GL_CXXALIASWARN (func); |
| causes a warning to be emitted when ::func is used but not when |
| GNULIB_NAMESPACE::func is used. func must be defined without overloaded |
| variants. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_CXXALIASWARN(func) \ |
| _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE) |
| # define _GL_CXXALIASWARN_1(func,namespace) \ |
| _GL_CXXALIASWARN_2 (func, namespace) |
| /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>, |
| we enable the warning only when not optimizing. */ |
| # if !__OPTIMIZE__ |
| # define _GL_CXXALIASWARN_2(func,namespace) \ |
| _GL_WARN_ON_USE (func, \ |
| "The symbol ::" #func " refers to the system function. " \ |
| "Use " #namespace "::" #func " instead.") |
| # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING |
| # define _GL_CXXALIASWARN_2(func,namespace) \ |
| extern __typeof__ (func) func |
| # else |
| # define _GL_CXXALIASWARN_2(func,namespace) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| # endif |
| #else |
| # define _GL_CXXALIASWARN(func) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| /* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes); |
| causes a warning to be emitted when the given overloaded variant of ::func |
| is used but not when GNULIB_NAMESPACE::func is used. */ |
| #if defined __cplusplus && defined GNULIB_NAMESPACE |
| # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \ |
| _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \ |
| GNULIB_NAMESPACE) |
| # define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \ |
| _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace) |
| /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>, |
| we enable the warning only when not optimizing. */ |
| # if !__OPTIMIZE__ |
| # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ |
| _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \ |
| "The symbol ::" #func " refers to the system function. " \ |
| "Use " #namespace "::" #func " instead.") |
| # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING |
| # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ |
| extern __typeof__ (func) func |
| # else |
| # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| # endif |
| #else |
| # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \ |
| _GL_EXTERN_C int _gl_cxxalias_dummy |
| #endif |
| |
| #endif /* _GL_CXXDEFS_H */ |
| |
| /* The definition of _GL_ARG_NONNULL is copied here. */ |
| /* A C macro for declaring that specific arguments must not be NULL. |
| Copyright (C) 2009-2019 Free Software Foundation, 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 3 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 <https://www.gnu.org/licenses/>. */ |
| |
| /* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools |
| that the values passed as arguments n, ..., m must be non-NULL pointers. |
| n = 1 stands for the first argument, n = 2 for the second argument etc. */ |
| #ifndef _GL_ARG_NONNULL |
| # if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3 |
| # define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params)) |
| # else |
| # define _GL_ARG_NONNULL(params) |
| # endif |
| #endif |
| |
| /* The definition of _GL_WARN_ON_USE is copied here. */ |
| /* A C macro for emitting warnings if a function is used. |
| Copyright (C) 2010-2019 Free Software Foundation, 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 3 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 <https://www.gnu.org/licenses/>. */ |
| |
| /* _GL_WARN_ON_USE (function, "literal string") issues a declaration |
| for FUNCTION which will then trigger a compiler warning containing |
| the text of "literal string" anywhere that function is called, if |
| supported by the compiler. If the compiler does not support this |
| feature, the macro expands to an unused extern declaration. |
| |
| _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the |
| attribute used in _GL_WARN_ON_USE. If the compiler does not support |
| this feature, it expands to empty. |
| |
| These macros are useful for marking a function as a potential |
| portability trap, with the intent that "literal string" include |
| instructions on the replacement function that should be used |
| instead. |
| _GL_WARN_ON_USE is for functions with 'extern' linkage. |
| _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline' |
| linkage. |
| |
| However, one of the reasons that a function is a portability trap is |
| if it has the wrong signature. Declaring FUNCTION with a different |
| signature in C is a compilation error, so this macro must use the |
| same type as any existing declaration so that programs that avoid |
| the problematic FUNCTION do not fail to compile merely because they |
| included a header that poisoned the function. But this implies that |
| _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already |
| have a declaration. Use of this macro implies that there must not |
| be any other macro hiding the declaration of FUNCTION; but |
| undefining FUNCTION first is part of the poisoning process anyway |
| (although for symbols that are provided only via a macro, the result |
| is a compilation error rather than a warning containing |
| "literal string"). Also note that in C++, it is only safe to use if |
| FUNCTION has no overloads. |
| |
| For an example, it is possible to poison 'getline' by: |
| - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]], |
| [getline]) in configure.ac, which potentially defines |
| HAVE_RAW_DECL_GETLINE |
| - adding this code to a header that wraps the system <stdio.h>: |
| #undef getline |
| #if HAVE_RAW_DECL_GETLINE |
| _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but" |
| "not universally present; use the gnulib module getline"); |
| #endif |
| |
| It is not possible to directly poison global variables. But it is |
| possible to write a wrapper accessor function, and poison that |
| (less common usage, like &environ, will cause a compilation error |
| rather than issue the nice warning, but the end result of informing |
| the developer about their portability problem is still achieved): |
| #if HAVE_RAW_DECL_ENVIRON |
| static char *** |
| rpl_environ (void) { return &environ; } |
| _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared"); |
| # undef environ |
| # define environ (*rpl_environ ()) |
| #endif |
| or better (avoiding contradictory use of 'static' and 'extern'): |
| #if HAVE_RAW_DECL_ENVIRON |
| static char *** |
| _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared") |
| rpl_environ (void) { return &environ; } |
| # undef environ |
| # define environ (*rpl_environ ()) |
| #endif |
| */ |
| #ifndef _GL_WARN_ON_USE |
| |
| # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) |
| /* A compiler attribute is available in gcc versions 4.3.0 and later. */ |
| # define _GL_WARN_ON_USE(function, message) \ |
| extern __typeof__ (function) function __attribute__ ((__warning__ (message))) |
| # define _GL_WARN_ON_USE_ATTRIBUTE(message) \ |
| __attribute__ ((__warning__ (message))) |
| # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING |
| /* Verify the existence of the function. */ |
| # define _GL_WARN_ON_USE(function, message) \ |
| extern __typeof__ (function) function |
| # define _GL_WARN_ON_USE_ATTRIBUTE(message) |
| # else /* Unsupported. */ |
| # define _GL_WARN_ON_USE(function, message) \ |
| _GL_WARN_EXTERN_C int _gl_warn_on_use |
| # define _GL_WARN_ON_USE_ATTRIBUTE(message) |
| # endif |
| #endif |
| |
| /* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string") |
| is like _GL_WARN_ON_USE (function, "string"), except that the function is |
| declared with the given prototype, consisting of return type, parameters, |
| and attributes. |
| This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does |
| not work in this case. */ |
| #ifndef _GL_WARN_ON_USE_CXX |
| # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) |
| # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ |
| extern rettype function parameters_and_attributes \ |
| __attribute__ ((__warning__ (msg))) |
| # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING |
| /* Verify the existence of the function. */ |
| # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ |
| extern rettype function parameters_and_attributes |
| # else /* Unsupported. */ |
| # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ |
| _GL_WARN_EXTERN_C int _gl_warn_on_use |
| # endif |
| #endif |
| |
| /* _GL_WARN_EXTERN_C declaration; |
| performs the declaration with C linkage. */ |
| #ifndef _GL_WARN_EXTERN_C |
| # if defined __cplusplus |
| # define _GL_WARN_EXTERN_C extern "C" |
| # else |
| # define _GL_WARN_EXTERN_C extern |
| # endif |
| #endif |
| |
| /* On AIX, sig_atomic_t already includes volatile. C99 requires that |
| 'volatile sig_atomic_t' ignore the extra modifier, but C89 did not. |
| Hence, redefine this to a non-volatile type as needed. */ |
| #if ! 1 |
| # if !GNULIB_defined_sig_atomic_t |
| typedef int rpl_sig_atomic_t; |
| # undef sig_atomic_t |
| # define sig_atomic_t rpl_sig_atomic_t |
| # define GNULIB_defined_sig_atomic_t 1 |
| # endif |
| #endif |
| |
| /* A set or mask of signals. */ |
| #if !1 |
| # if !GNULIB_defined_sigset_t |
| typedef unsigned int sigset_t; |
| # define GNULIB_defined_sigset_t 1 |
| # endif |
| #endif |
| |
| /* Define sighandler_t, the type of signal handlers. A GNU extension. */ |
| #if !1 |
| # ifdef __cplusplus |
| extern "C" { |
| # endif |
| # if !GNULIB_defined_sighandler_t |
| typedef void (*sighandler_t) (int); |
| # define GNULIB_defined_sighandler_t 1 |
| # endif |
| # ifdef __cplusplus |
| } |
| # endif |
| #endif |
| |
| |
| #if 0 |
| # ifndef SIGPIPE |
| /* Define SIGPIPE to a value that does not overlap with other signals. */ |
| # define SIGPIPE 13 |
| # define GNULIB_defined_SIGPIPE 1 |
| /* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask', |
| 'write', 'stdio'. */ |
| # endif |
| #endif |
| |
| |
| /* Maximum signal number + 1. */ |
| #ifndef NSIG |
| # if defined __TANDEM |
| # define NSIG 32 |
| # endif |
| #endif |
| |
| |
| #if 0 |
| # if 0 |
| # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| # undef pthread_sigmask |
| # define pthread_sigmask rpl_pthread_sigmask |
| # endif |
| _GL_FUNCDECL_RPL (pthread_sigmask, int, |
| (int how, const sigset_t *new_mask, sigset_t *old_mask)); |
| _GL_CXXALIAS_RPL (pthread_sigmask, int, |
| (int how, const sigset_t *new_mask, sigset_t *old_mask)); |
| # else |
| # if !(1 || defined pthread_sigmask) |
| _GL_FUNCDECL_SYS (pthread_sigmask, int, |
| (int how, const sigset_t *new_mask, sigset_t *old_mask)); |
| # endif |
| _GL_CXXALIAS_SYS (pthread_sigmask, int, |
| (int how, const sigset_t *new_mask, sigset_t *old_mask)); |
| # endif |
| # if __GLIBC__ >= 2 |
| _GL_CXXALIASWARN (pthread_sigmask); |
| # endif |
| #elif defined GNULIB_POSIXCHECK |
| # undef pthread_sigmask |
| # if HAVE_RAW_DECL_PTHREAD_SIGMASK |
| _GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - " |
| "use gnulib module pthread_sigmask for portability"); |
| # endif |
| #endif |
| |
| |
| #if 1 |
| # if 0 |
| # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| # undef raise |
| # define raise rpl_raise |
| # endif |
| _GL_FUNCDECL_RPL (raise, int, (int sig)); |
| _GL_CXXALIAS_RPL (raise, int, (int sig)); |
| # else |
| # if !1 |
| _GL_FUNCDECL_SYS (raise, int, (int sig)); |
| # endif |
| _GL_CXXALIAS_SYS (raise, int, (int sig)); |
| # endif |
| # if __GLIBC__ >= 2 |
| _GL_CXXALIASWARN (raise); |
| # endif |
| #elif defined GNULIB_POSIXCHECK |
| # undef raise |
| /* Assume raise is always declared. */ |
| _GL_WARN_ON_USE (raise, "raise can crash on native Windows - " |
| "use gnulib module raise for portability"); |
| #endif |
| |
| |
| #if 1 |
| # if !1 |
| |
| # ifndef GNULIB_defined_signal_blocking |
| # define GNULIB_defined_signal_blocking 1 |
| # endif |
| |
| /* Maximum signal number + 1. */ |
| # ifndef NSIG |
| # define NSIG 32 |
| # endif |
| |
| /* This code supports only 32 signals. */ |
| # if !GNULIB_defined_verify_NSIG_constraint |
| typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1]; |
| # define GNULIB_defined_verify_NSIG_constraint 1 |
| # endif |
| |
| # endif |
| |
| /* When also using extern inline, suppress the use of static inline in |
| standard headers of problematic Apple configurations, as Libc at |
| least through Libc-825.26 (2013-04-09) mishandles it; see, e.g., |
| <https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html>. |
| Perhaps Apple will fix this some day. */ |
| #if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \ |
| && (defined __i386__ || defined __x86_64__)) |
| # undef sigaddset |
| # undef sigdelset |
| # undef sigemptyset |
| # undef sigfillset |
| # undef sigismember |
| #endif |
| |
| /* Test whether a given signal is contained in a signal set. */ |
| # if 1 |
| /* This function is defined as a macro on Mac OS X. */ |
| # if defined __cplusplus && defined GNULIB_NAMESPACE |
| # undef sigismember |
| # endif |
| # else |
| _GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig) |
| _GL_ARG_NONNULL ((1))); |
| # endif |
| _GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig)); |
| _GL_CXXALIASWARN (sigismember); |
| |
| /* Initialize a signal set to the empty set. */ |
| # if 1 |
| /* This function is defined as a macro on Mac OS X. */ |
| # if defined __cplusplus && defined GNULIB_NAMESPACE |
| # undef sigemptyset |
| # endif |
| # else |
| _GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1))); |
| # endif |
| _GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set)); |
| _GL_CXXALIASWARN (sigemptyset); |
| |
| /* Add a signal to a signal set. */ |
| # if 1 |
| /* This function is defined as a macro on Mac OS X. */ |
| # if defined __cplusplus && defined GNULIB_NAMESPACE |
| # undef sigaddset |
| # endif |
| # else |
| _GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig) |
| _GL_ARG_NONNULL ((1))); |
| # endif |
| _GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig)); |
| _GL_CXXALIASWARN (sigaddset); |
| |
| /* Remove a signal from a signal set. */ |
| # if 1 |
| /* This function is defined as a macro on Mac OS X. */ |
| # if defined __cplusplus && defined GNULIB_NAMESPACE |
| # undef sigdelset |
| # endif |
| # else |
| _GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig) |
| _GL_ARG_NONNULL ((1))); |
| # endif |
| _GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig)); |
| _GL_CXXALIASWARN (sigdelset); |
| |
| /* Fill a signal set with all possible signals. */ |
| # if 1 |
| /* This function is defined as a macro on Mac OS X. */ |
| # if defined __cplusplus && defined GNULIB_NAMESPACE |
| # undef sigfillset |
| # endif |
| # else |
| _GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1))); |
| # endif |
| _GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set)); |
| _GL_CXXALIASWARN (sigfillset); |
| |
| /* Return the set of those blocked signals that are pending. */ |
| # if !1 |
| _GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1))); |
| # endif |
| _GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set)); |
| _GL_CXXALIASWARN (sigpending); |
| |
| /* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET. |
| Then, if SET is not NULL, affect the current set of blocked signals by |
| combining it with *SET as indicated in OPERATION. |
| In this implementation, you are not allowed to change a signal handler |
| while the signal is blocked. */ |
| # if !1 |
| # define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */ |
| # define SIG_SETMASK 1 /* blocked_set = *set; */ |
| # define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */ |
| _GL_FUNCDECL_SYS (sigprocmask, int, |
| (int operation, const sigset_t *set, sigset_t *old_set)); |
| # endif |
| _GL_CXXALIAS_SYS (sigprocmask, int, |
| (int operation, const sigset_t *set, sigset_t *old_set)); |
| _GL_CXXALIASWARN (sigprocmask); |
| |
| /* Install the handler FUNC for signal SIG, and return the previous |
| handler. */ |
| # ifdef __cplusplus |
| extern "C" { |
| # endif |
| # if !GNULIB_defined_function_taking_int_returning_void_t |
| typedef void (*_gl_function_taking_int_returning_void_t) (int); |
| # define GNULIB_defined_function_taking_int_returning_void_t 1 |
| # endif |
| # ifdef __cplusplus |
| } |
| # endif |
| # if !1 |
| # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
| # define signal rpl_signal |
| # endif |
| _GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t, |
| (int sig, _gl_function_taking_int_returning_void_t func)); |
| _GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t, |
| (int sig, _gl_function_taking_int_returning_void_t func)); |
| # else |
| _GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t, |
| (int sig, _gl_function_taking_int_returning_void_t func)); |
| # endif |
| # if __GLIBC__ >= 2 |
| _GL_CXXALIASWARN (signal); |
| # endif |
| |
| # if !1 && GNULIB_defined_SIGPIPE |
| /* Raise signal SIGPIPE. */ |
| _GL_EXTERN_C int _gl_raise_SIGPIPE (void); |
| # endif |
| |
| #elif defined GNULIB_POSIXCHECK |
| # undef sigaddset |
| # if HAVE_RAW_DECL_SIGADDSET |
| _GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| # undef sigdelset |
| # if HAVE_RAW_DECL_SIGDELSET |
| _GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| # undef sigemptyset |
| # if HAVE_RAW_DECL_SIGEMPTYSET |
| _GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| # undef sigfillset |
| # if HAVE_RAW_DECL_SIGFILLSET |
| _GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| # undef sigismember |
| # if HAVE_RAW_DECL_SIGISMEMBER |
| _GL_WARN_ON_USE (sigismember, "sigismember is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| # undef sigpending |
| # if HAVE_RAW_DECL_SIGPENDING |
| _GL_WARN_ON_USE (sigpending, "sigpending is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| # undef sigprocmask |
| # if HAVE_RAW_DECL_SIGPROCMASK |
| _GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - " |
| "use the gnulib module sigprocmask for portability"); |
| # endif |
| #endif /* 1 */ |
| |
| |
| #if 1 |
| # if !1 |
| |
| # if !1 |
| |
| # if !GNULIB_defined_siginfo_types |
| |
| /* Present to allow compilation, but unsupported by gnulib. */ |
| union sigval |
| { |
| int sival_int; |
| void *sival_ptr; |
| }; |
| |
| /* Present to allow compilation, but unsupported by gnulib. */ |
| struct siginfo_t |
| { |
| int si_signo; |
| int si_code; |
| int si_errno; |
| pid_t si_pid; |
| uid_t si_uid; |
| void *si_addr; |
| int si_status; |
| long si_band; |
| union sigval si_value; |
| }; |
| typedef struct siginfo_t siginfo_t; |
| |
| # define GNULIB_defined_siginfo_types 1 |
| # endif |
| |
| # endif /* !1 */ |
| |
| /* We assume that platforms which lack the sigaction() function also lack |
| the 'struct sigaction' type, and vice versa. */ |
| |
| # if !GNULIB_defined_struct_sigaction |
| |
| struct sigaction |
| { |
| union |
| { |
| void (*_sa_handler) (int); |
| /* Present to allow compilation, but unsupported by gnulib. POSIX |
| says that implementations may, but not must, make sa_sigaction |
| overlap with sa_handler, but we know of no implementation where |
| they do not overlap. */ |
| void (*_sa_sigaction) (int, siginfo_t *, void *); |
| } _sa_func; |
| sigset_t sa_mask; |
| /* Not all POSIX flags are supported. */ |
| int sa_flags; |
| }; |
| # define sa_handler _sa_func._sa_handler |
| # define sa_sigaction _sa_func._sa_sigaction |
| /* Unsupported flags are not present. */ |
| # define SA_RESETHAND 1 |
| # define SA_NODEFER 2 |
| # define SA_RESTART 4 |
| |
| # define GNULIB_defined_struct_sigaction 1 |
| # endif |
| |
| _GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict, |
| struct sigaction *restrict)); |
| |
| # elif !1 |
| |
| # define sa_sigaction sa_handler |
| |
| # endif /* !1, !1 */ |
| |
| _GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict, |
| struct sigaction *restrict)); |
| _GL_CXXALIASWARN (sigaction); |
| |
| #elif defined GNULIB_POSIXCHECK |
| # undef sigaction |
| # if HAVE_RAW_DECL_SIGACTION |
| _GL_WARN_ON_USE (sigaction, "sigaction is unportable - " |
| "use the gnulib module sigaction for portability"); |
| # endif |
| #endif |
| |
| /* Some systems don't have SA_NODEFER. */ |
| #ifndef SA_NODEFER |
| # define SA_NODEFER 0 |
| #endif |
| |
| |
| #endif /* _GL_SIGNAL_H */ |
| #endif /* _GL_SIGNAL_H */ |
| #endif |
