osdep.h

   1 #ifndef QEMU_OSDEP_H
   2 #define QEMU_OSDEP_H
   3
   4 #include <stdarg.h>
   5 #ifdef __OpenBSD__
   6 #include <sys/types.h>
   7 #include <sys/signal.h>
   8 #endif
   9
  10 #ifndef glue
  11 #define xglue(x, y) x ## y
  12 #define glue(x, y) xglue(x, y)
  13 #define stringify(s)    tostring(s)
  14 #define tostring(s)     #s
  15 #endif
  16
  17 #ifndef likely
  18 #if __GNUC__ < 3
  19 #define __builtin_expect(x, n) (x)
  20 #endif
  21
  22 #define likely(x)   __builtin_expect(!!(x), 1)
  23 #define unlikely(x)   __builtin_expect(!!(x), 0)
  24 #endif
  25
  26 #ifndef offsetof
  27 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
  28 #endif
  29 #ifndef container_of
  30 #define container_of(ptr, type, member) ({                      \
  31         const typeof(((type *) 0)->member) *__mptr = (ptr);     \
  32         (type *) ((char *) __mptr - offsetof(type, member));})
  33 #endif
  34
  35 #ifndef MIN
  36 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
  37 #endif
  38 #ifndef MAX
  39 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
  40 #endif
  41
  42 #ifndef ARRAY_SIZE
  43 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  44 #endif
  45
  46 #ifndef always_inline
  47 #if (__GNUC__ < 3) || defined(__APPLE__)
  48 #define always_inline inline
  49 #else
  50 #define always_inline __attribute__ (( always_inline )) __inline__
  51 #define inline always_inline
  52 #endif
  53 #else
  54 #define inline always_inline
  55 #endif
  56
  57 #ifdef __i386__
  58 #define REGPARM __attribute((regparm(3)))
  59 #else
  60 #define REGPARM
  61 #endif
  62
  63 #define qemu_printf printf
  64
  65 #if defined (__GNUC__) && defined (__GNUC_MINOR_)
  66 # define QEMU_GNUC_PREREQ(maj, min) \
  67          ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  68 #else
  69 # define QEMU_GNUC_PREREQ(maj, min) 0
  70 #endif
  71
  72 void *qemu_memalign(size_t alignment, size_t size);
  73 void *qemu_vmalloc(size_t size);
  74 void qemu_vfree(void *ptr);
  75
  76 int qemu_create_pidfile(const char *filename);
  77
  78 #ifdef _WIN32
  79 int ffs(int i);
  80
  81 typedef struct {
  82     long tv_sec;
  83     long tv_usec;
  84 } qemu_timeval;
  85 int qemu_gettimeofday(qemu_timeval *tp);
  86 #else
  87 typedef struct timeval qemu_timeval;
  88 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
  89 #endif /* !_WIN32 */
  90
  91 #endif