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rpm

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    4.14.2

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rpmio

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rpmutil.h

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Go to the documentation of this file.    1 #ifndef _RPMUTIL_H
    2 #define _RPMUTIL_H
    3 
    4 #include <unistd.h>
    5 
   16 /* Here we provide RPM_GNUC_EXTENSION as an alias for __extension__,
   17  * where this is valid. This allows for warningless compilation of
   18  * "long long" types even in the presence of '-ansi -pedantic'. 
   19  */
   20 #if     __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
   21 #  define RPM_GNUC_EXTENSION __extension__
   22 #else
   23 #  define RPM_GNUC_EXTENSION
   24 #endif
   25 
   26 /* Provide macros to feature the GCC function attribute.
   27  */
   28 #if    __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
   29 #define RPM_GNUC_PURE                            \
   30   __attribute__((__pure__))
   31 #define RPM_GNUC_MALLOC                         \
   32   __attribute__((__malloc__))
   33 #else
   34 #define RPM_GNUC_PURE
   35 #define RPM_GNUC_MALLOC
   36 #endif
   37 
   38 #if     (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
   39 #define RPM_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))
   40 #define RPM_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y)))
   41 #else
   42 #define RPM_GNUC_ALLOC_SIZE(x)
   43 #define RPM_GNUC_ALLOC_SIZE2(x,y)
   44 #endif
   45 
   46 #if     __GNUC__ >= 4
   47 #define RPM_GNUC_NULL_TERMINATED __attribute__((__sentinel__))
   48 #else
   49 #define RPM_GNUC_NULL_TERMINATED
   50 #endif
   51 
   52 #if     __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
   53 #define RPM_GNUC_PRINTF( format_idx, arg_idx )    \
   54   __attribute__((__format__ (__printf__, format_idx, arg_idx)))
   55 #define RPM_GNUC_SCANF( format_idx, arg_idx )     \
   56   __attribute__((__format__ (__scanf__, format_idx, arg_idx)))
   57 #define RPM_GNUC_FORMAT( arg_idx )                \
   58   __attribute__((__format_arg__ (arg_idx)))
   59 #define RPM_GNUC_NORETURN                         \
   60   __attribute__((__noreturn__))
   61 #define RPM_GNUC_CONST                            \
   62   __attribute__((__const__))
   63 #define RPM_GNUC_UNUSED                           \
   64   __attribute__((__unused__))
   65 #define RPM_GNUC_NO_INSTRUMENT                  \
   66   __attribute__((__no_instrument_function__))
   67 #else   /* !__GNUC__ */
   68 #define RPM_GNUC_PRINTF( format_idx, arg_idx )
   69 #define RPM_GNUC_SCANF( format_idx, arg_idx )
   70 #define RPM_GNUC_FORMAT( arg_idx )
   71 #define RPM_GNUC_NORETURN
   72 #define RPM_GNUC_CONST
   73 #define RPM_GNUC_UNUSED
   74 #define RPM_GNUC_NO_INSTRUMENT
   75 #endif  /* !__GNUC__ */
   76 
   77 #if    __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
   78 #define RPM_GNUC_DEPRECATED                            \
   79   __attribute__((__deprecated__))
   80 #else
   81 #define RPM_GNUC_DEPRECATED
   82 #endif /* __GNUC__ */
   83 
   84 #if     __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
   85 #define RPM_GNUC_MAY_ALIAS __attribute__((may_alias))
   86 #define RPM_GNUC_NONNULL( ... ) \
   87   __attribute__((__nonnull__ (__VA_ARGS__)))
   88 #else
   89 #define RPM_GNUC_MAY_ALIAS
   90 #define RPM_GNUC_NONNULL( ... )
   91 #endif
   92 
   93 #if    __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
   94 #define RPM_GNUC_WARN_UNUSED_RESULT             \
   95   __attribute__((warn_unused_result))
   96 #else
   97 #define RPM_GNUC_WARN_UNUSED_RESULT
   98 #endif /* __GNUC__ */
   99 
  100 #if    __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
  101 #  define RPM_GNUC_INTERNAL __attribute__((visibility("hidden")))
  102 #else
  103 #  define RPM_GNUC_INTERNAL
  104 #endif
  105 
  106 
  107 /* Guard C code in headers, while including them from C++ */
  108 #ifdef  __cplusplus
  109 # define RPM_BEGIN_DECLS  extern "C" {
  110 # define RPM_END_DECLS    }
  111 #else
  112 # define RPM_BEGIN_DECLS
  113 # define RPM_END_DECLS
  114 #endif
  115 
  116 #ifdef __cplusplus
  117 extern "C" {
  118 #endif
  119 
  120 /* Rpm specific allocators which never return NULL but terminate on failure */
  121 RPM_GNUC_MALLOC RPM_GNUC_ALLOC_SIZE(1)
  122 void * rmalloc(size_t size);
  123 
  124 RPM_GNUC_MALLOC RPM_GNUC_ALLOC_SIZE2(1,2)
  125 void * rcalloc(size_t nmemb, size_t size);
  126 
  127 RPM_GNUC_ALLOC_SIZE(2)
  128 void * rrealloc(void *ptr, size_t size);
  129 
  130 char * rstrdup(const char *str);
  131 
  132 /* Rpm specific free() which returns NULL */
  133 void * rfree(void *ptr);
  134 
  146 typedef void * (*rpmMemFailFunc) (size_t size, void *data);
  147 
  154 rpmMemFailFunc rpmSetMemFail(rpmMemFailFunc func, void *data);
  155 
  156 #ifdef __cplusplus
  157 }
  158 #endif
  159 
  160 #endif /* _RPMUTIL_H */
rmalloc
void * rmalloc(size_t size)

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rpmMemFailFunc
void *(* rpmMemFailFunc)(size_t size, void *data)
Memory allocation failure callback prototype. 
Definition: rpmutil.h:146

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RPM_GNUC_ALLOC_SIZE
#define RPM_GNUC_ALLOC_SIZE(x)
Definition: rpmutil.h:42

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RPM_GNUC_ALLOC_SIZE2
#define RPM_GNUC_ALLOC_SIZE2(x, y)
Definition: rpmutil.h:43

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rrealloc
void * rrealloc(void *ptr, size_t size)

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rfree
void * rfree(void *ptr)

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rstrdup
char * rstrdup(const char *str)

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rpmSetMemFail
rpmMemFailFunc rpmSetMemFail(rpmMemFailFunc func, void *data)
Set memory allocation failure callback.

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RPM_GNUC_MALLOC
#define RPM_GNUC_MALLOC
Definition: rpmutil.h:35

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rcalloc
void * rcalloc(size_t nmemb, size_t size)

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Blame doc/librpm/html/rpmutil_8h_source.html