diff options
Diffstat (limited to 'libotr/libgpg-error-1.42/src/gen-posix-lock-obj.c')
| -rw-r--r-- | libotr/libgpg-error-1.42/src/gen-posix-lock-obj.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/libotr/libgpg-error-1.42/src/gen-posix-lock-obj.c b/libotr/libgpg-error-1.42/src/gen-posix-lock-obj.c new file mode 100644 index 0000000..e6f33ae --- /dev/null +++ b/libotr/libgpg-error-1.42/src/gen-posix-lock-obj.c @@ -0,0 +1,175 @@ +/* gen-posix-lock-obj.c - Build tool to construct the lock object. + Copyright (C) 2014 g10 Code GmbH + + This file is part of libgpg-error. + + libgpg-error 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 2.1 of + the License, or (at your option) any later version. + + libgpg-error 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 program; if not, see <https://www.gnu.org/licenses/>. + */ + +#if HAVE_CONFIG_H +#include <config.h> +#endif + +#ifdef HAVE_W32_SYSTEM +# error This module may not be build for Windows. +#endif + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> +#ifdef USE_POSIX_THREADS +# include <pthread.h> +#endif + +#include "posix-lock-obj.h" + +#define PGM "gen-posix-lock-obj" + +/* Check that configure did its job. */ +#ifdef USE_POSIX_THREADS +#if SIZEOF_PTHREAD_MUTEX_T < 4 +# error sizeof pthread_mutex_t is not known. +#endif +#endif + +/* Special requirements for certain platforms. */ +# define USE_LONG_DOUBLE_FOR_ALIGNMENT 0 +#if defined(__sun) && !defined (__LP64__) && !defined(_LP64) +/* Solaris on 32-bit architecture. */ +# define USE_DOUBLE_FOR_ALIGNMENT 1 +#else +# define USE_DOUBLE_FOR_ALIGNMENT 0 +#endif +#if defined(__hppa__) +# define USE_16BYTE_ALIGNMENT 1 +#else +# define USE_16BYTE_ALIGNMENT 0 +#endif + +#if USE_16BYTE_ALIGNMENT && !HAVE_GCC_ATTRIBUTE_ALIGNED +# error compiler is not able to enforce a 16 byte alignment +#endif + +#ifdef USE_POSIX_THREADS +static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER; +#endif + +int +main (void) +{ +#ifdef USE_POSIX_THREADS + unsigned char *p; + int i; +#endif + struct { + long vers; +#ifdef USE_POSIX_THREADS + pthread_mutex_t mtx; +#endif + } dummyobj; + + +#ifdef USE_POSIX_THREADS + if (sizeof mtx != SIZEOF_PTHREAD_MUTEX_T) + { + fprintf (stderr, PGM ": pthread_mutex_t mismatch\n"); + exit (1); + } +#endif /*USE_POSIX_THREADS*/ + + if (sizeof (dummyobj) != sizeof (_gpgrt_lock_t)) + { + fprintf (stderr, PGM ": internal and external lock object mismatch\n"); + exit (1); + } + + printf ("## lock-obj-pub.%s.h%s\n" + "## File created by " PGM " - DO NOT EDIT\n" + "## To be included by mkheader into gpg-error.h\n" + "\n", + HOST_TRIPLET_STRING, +#ifdef USE_POSIX_THREADS + "" +#else + " - NO LOCK SUPPORT" +#endif + ); + +#ifdef USE_POSIX_THREADS + + /* To force a probably suitable alignment of the structure we use a + union and include a long and a pointer to a long. */ + printf ("typedef struct\n" + "{\n" + " long _vers;\n" + " union {\n" + " volatile char _priv[%d];\n" + "%s" + " long _x_align;\n" + " long *_xp_align;\n" + " } u;\n" + "} gpgrt_lock_t;\n" + "\n" + "#define GPGRT_LOCK_INITIALIZER {%d,{{", + SIZEOF_PTHREAD_MUTEX_T, +# if USE_16BYTE_ALIGNMENT + " int _x16_align __attribute__ ((aligned (16)));\n", +# elif USE_DOUBLE_FOR_ALIGNMENT + " double _xd_align;\n", +# elif USE_LONG_DOUBLE_FOR_ALIGNMENT + " long double _xld_align;\n", +# else + "", +# endif + LOCK_ABI_VERSION); + p = (unsigned char *)&mtx; + for (i=0; i < sizeof mtx; i++) + { + if (i && !(i % 8)) + printf (" \\\n%*s", 36, ""); + printf ("%u", p[i]); + if (i < sizeof mtx - 1) + putchar (','); + } + fputs ("}}}\n", stdout); + +#else /*!USE_POSIX_THREADS*/ + + printf ("/* Dummy object - no locking available. */\n" + "typedef struct\n" + "{\n" + " long _vers;\n" + "} gpgrt_lock_t;\n" + "\n" + "#define GPGRT_LOCK_INITIALIZER {%d}\n", + LOCK_ABI_VERSION); + +#endif /*!USE_POSIX_THREADS*/ + + fputs ("##\n" + "## Loc" "al Variables:\n" + "## mode: c\n" + "## buffer-read-only: t\n" + "## End:\n" + "##\n", stdout); + + if (ferror (stdout)) + { + fprintf (stderr, PGM ": error writing to stdout: %s\n", strerror (errno)); + return 1; + } + + return 0; +} |