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rpm
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rpmutil.h
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#ifndef _RPMUTIL_H #define _RPMUTIL_H #include <unistd.h> /* * Miscellaneous utility macros: * - portability wrappers for various gcc extensions like __attribute__() * - ... * * Copied from glib, names replaced to avoid clashing with glib. * */ /* Here we provide RPM_GNUC_EXTENSION as an alias for __extension__, * where this is valid. This allows for warningless compilation of * "long long" types even in the presence of '-ansi -pedantic'. */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8) # define RPM_GNUC_EXTENSION __extension__ #else # define RPM_GNUC_EXTENSION #endif /* Provide macros to feature the GCC function attribute. */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) #define RPM_GNUC_PURE \ __attribute__((__pure__)) #define RPM_GNUC_MALLOC \ __attribute__((__malloc__)) #else #define RPM_GNUC_PURE #define RPM_GNUC_MALLOC #endif #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) #define RPM_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x))) #define RPM_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y))) #else #define RPM_GNUC_ALLOC_SIZE(x) #define RPM_GNUC_ALLOC_SIZE2(x,y) #endif #if __GNUC__ >= 4 #define RPM_GNUC_NULL_TERMINATED __attribute__((__sentinel__)) #else #define RPM_GNUC_NULL_TERMINATED #endif #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4) #define RPM_GNUC_PRINTF( format_idx, arg_idx ) \ __attribute__((__format__ (__printf__, format_idx, arg_idx))) #define RPM_GNUC_SCANF( format_idx, arg_idx ) \ __attribute__((__format__ (__scanf__, format_idx, arg_idx))) #define RPM_GNUC_FORMAT( arg_idx ) \ __attribute__((__format_arg__ (arg_idx))) #define RPM_GNUC_NORETURN \ __attribute__((__noreturn__)) #define RPM_GNUC_CONST \ __attribute__((__const__)) #define RPM_GNUC_UNUSED \ __attribute__((__unused__)) #define RPM_GNUC_NO_INSTRUMENT \ __attribute__((__no_instrument_function__)) #else /* !__GNUC__ */ #define RPM_GNUC_PRINTF( format_idx, arg_idx ) #define RPM_GNUC_SCANF( format_idx, arg_idx ) #define RPM_GNUC_FORMAT( arg_idx ) #define RPM_GNUC_NORETURN #define RPM_GNUC_CONST #define RPM_GNUC_UNUSED #define RPM_GNUC_NO_INSTRUMENT #endif /* !__GNUC__ */ #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) #define RPM_GNUC_DEPRECATED \ __attribute__((__deprecated__)) #else #define RPM_GNUC_DEPRECATED #endif /* __GNUC__ */ #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) #define RPM_GNUC_MAY_ALIAS __attribute__((may_alias)) #define RPM_GNUC_NONNULL( ... ) \ __attribute__((__nonnull__ (__VA_ARGS__))) #else #define RPM_GNUC_MAY_ALIAS #define RPM_GNUC_NONNULL( ... ) #endif #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) #define RPM_GNUC_WARN_UNUSED_RESULT \ __attribute__((warn_unused_result)) #else #define RPM_GNUC_WARN_UNUSED_RESULT #endif /* __GNUC__ */ #if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) # define RPM_GNUC_INTERNAL __attribute__((visibility("hidden"))) #else # define RPM_GNUC_INTERNAL #endif /* Guard C code in headers, while including them from C++ */ #ifdef __cplusplus # define RPM_BEGIN_DECLS extern "C" { # define RPM_END_DECLS } #else # define RPM_BEGIN_DECLS # define RPM_END_DECLS #endif #ifdef __cplusplus extern "C" { #endif /* Rpm specific allocators which never return NULL but terminate on failure */ RPM_GNUC_MALLOC RPM_GNUC_ALLOC_SIZE(1) void * rmalloc(size_t size); RPM_GNUC_MALLOC RPM_GNUC_ALLOC_SIZE2(1,2) void * rcalloc(size_t nmemb, size_t size); RPM_GNUC_ALLOC_SIZE(2) void * rrealloc(void *ptr, size_t size); char * rstrdup(const char *str); /* Rpm specific free() which returns NULL */ void * rfree(void *ptr); /** \ingroup rpmutil * Memory allocation failure callback prototype. When registered through * rpmSetMemFail(), this gets called if memory allocation through rmalloc() * and friends fails. If the application can somehow recover memory here, * it can return a newly allocated memory block of requested size, otherwise * it must return NULL after performing it's own shutdown deeds or * terminate itself. * @param size Size of allocation request in bytes * @param data User data (or NULL) * @return Allocated memory block of requested size or NULL */ typedef void * (*rpmMemFailFunc) (size_t size, void *data); /** \ingroup rpmutil * Set memory allocation failure callback. * @param func Allocation failure callback function * @param data User data (or NULL) * @return Previous callback function */ rpmMemFailFunc rpmSetMemFail(rpmMemFailFunc func, void *data); #ifdef __cplusplus } #endif #endif /* _RPMUTIL_H */