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 #define container_of(ptr, type, member) ({                      \
  27         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
  28         (type *)( (char *)__mptr - offsetof(type,member) );})
  29
  30 #ifndef MIN
  31 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
  32 #endif
  33 #ifndef MAX
  34 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
  35 #endif
  36
  37 #ifndef ARRAY_SIZE
  38 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  39 #endif
  40
  41 #ifndef always_inline
  42 #if (__GNUC__ < 3) || defined(__APPLE__)
  43 #define always_inline inline
  44 #else
  45 #define always_inline __attribute__ (( always_inline )) __inline__
  46 #define inline always_inline
  47 #endif
  48 #else
  49 #define inline always_inline
  50 #endif
  51
  52 #ifdef __i386__
  53 #define REGPARM __attribute((regparm(3)))
  54 #else
  55 #define REGPARM
  56 #endif
  57
  58 #define qemu_printf printf
  59
  60 void *qemu_memalign(size_t alignment, size_t size);
  61 void *qemu_vmalloc(size_t size);
  62 void qemu_vfree(void *ptr);
  63
  64 int qemu_create_pidfile(const char *filename);
  65
  66 #ifdef _WIN32
  67 int ffs(int i);
  68
  69 typedef struct {
  70     long tv_sec;
  71     long tv_usec;
  72 } qemu_timeval;
  73 int qemu_gettimeofday(qemu_timeval *tp);
  74 #else
  75 typedef struct timeval qemu_timeval;
  76 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
  77 #endif /* !_WIN32 */
  78
  79 #endif