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Macros
attributes.h File Reference

Macro definitions for various function/variable attributes. More...

Go to the source code of this file.

Macros

#define AV_GCC_VERSION_AT_LEAST(x, y)   (__GNUC__ > (x) || __GNUC__ == (x) && __GNUC_MINOR__ >= (y))
 
#define av_always_inline   __attribute__((always_inline)) inline
 
#define av_extern_inline   inline
 
#define av_noinline   __attribute__((noinline))
 
#define av_pure   __attribute__((pure))
 
#define av_const   __attribute__((const))
 
#define av_cold   __attribute__((cold))
 
#define av_flatten   __attribute__((flatten))
 
#define attribute_deprecated   __attribute__((deprecated))
 
#define AV_NOWARN_DEPRECATED(code)
 Disable warnings about deprecated features This is useful for sections of code kept for backward compatibility and scheduled for removal. More...
 
#define av_unused   __attribute__((unused))
 
#define av_used   __attribute__((used))
 Mark a variable as used and prevent the compiler from optimizing it away. More...
 
#define av_alias   __attribute__((may_alias))
 
#define av_uninit(x)   x=x
 
#define av_builtin_constant_p   __builtin_constant_p
 
#define av_printf_format(fmtpos, attrpos)   __attribute__((__format__(__printf__, fmtpos, attrpos)))
 
#define av_noreturn   __attribute__((noreturn))
 

Detailed Description

Macro definitions for various function/variable attributes.

Definition in file attributes.h.

Macro Definition Documentation

#define AV_GCC_VERSION_AT_LEAST (   x,
  y 
)    (__GNUC__ > (x) || __GNUC__ == (x) && __GNUC_MINOR__ >= (y))

Definition at line 30 of file attributes.h.

#define av_always_inline   __attribute__((always_inline)) inline

Definition at line 37 of file attributes.h.

#define av_extern_inline   inline

Definition at line 49 of file attributes.h.

#define av_noinline   __attribute__((noinline))

Definition at line 54 of file attributes.h.

#define av_pure   __attribute__((pure))

Definition at line 62 of file attributes.h.

#define av_const   __attribute__((const))

Definition at line 68 of file attributes.h.

#define av_cold   __attribute__((cold))

Definition at line 74 of file attributes.h.

#define av_flatten   __attribute__((flatten))

Definition at line 80 of file attributes.h.

#define attribute_deprecated   __attribute__((deprecated))

Definition at line 86 of file attributes.h.

#define AV_NOWARN_DEPRECATED (   code)
Value:
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
code \
_Pragma("GCC diagnostic pop")

Disable warnings about deprecated features This is useful for sections of code kept for backward compatibility and scheduled for removal.

Definition at line 100 of file attributes.h.

#define av_unused   __attribute__((unused))
#define av_used   __attribute__((used))

Mark a variable as used and prevent the compiler from optimizing it away.

This is useful for variables accessed only from inline assembler without the compiler being aware.

Definition at line 129 of file attributes.h.

union unaligned_16 av_alias   __attribute__((may_alias))

Definition at line 135 of file attributes.h.

#define av_uninit (   x)    x=x
#define av_builtin_constant_p   __builtin_constant_p

Definition at line 147 of file attributes.h.

Referenced by cmp().

#define av_printf_format (   fmtpos,
  attrpos 
)    __attribute__((__format__(__printf__, fmtpos, attrpos)))

Definition at line 148 of file attributes.h.

#define av_noreturn   __attribute__((noreturn))

Definition at line 155 of file attributes.h.