osdep.h

   1 #ifndef QEMU_OSDEP_H
   2 #define QEMU_OSDEP_H
   3
   4 #include <stdarg.h>
   5
   6 #ifndef glue
   7 #define xglue(x, y) x ## y
   8 #define glue(x, y) xglue(x, y)
   9 #define stringify(s)    tostring(s)
  10 #define tostring(s)     #s
  11 #endif
  12
  13 #ifndef likely
  14 #if __GNUC__ < 3
  15 #define __builtin_expect(x, n) (x)
  16 #endif
  17
  18 #define likely(x)   __builtin_expect(!!(x), 1)
  19 #define unlikely(x)   __builtin_expect(!!(x), 0)
  20 #endif
  21
  22 #ifndef MIN
  23 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
  24 #endif
  25 #ifndef MAX
  26 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
  27 #endif
  28
  29 #ifndef ARRAY_SIZE
  30 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  31 #endif
  32
  33 #ifndef always_inline
  34 #if (__GNUC__ < 3) || defined(__APPLE__)
  35 #define always_inline inline
  36 #else
  37 #define always_inline __attribute__ (( always_inline )) __inline__
  38 #endif
  39 #endif
  40 #define inline always_inline
  41
  42 #ifdef __i386__
  43 #define REGPARM __attribute((regparm(3)))
  44 #else
  45 #define REGPARM
  46 #endif
  47
  48 #define qemu_printf printf
  49
  50 void *qemu_memalign(size_t alignment, size_t size);
  51 void *qemu_vmalloc(size_t size);
  52 void qemu_vfree(void *ptr);
  53
  54 int qemu_create_pidfile(const char *filename);
  55
  56 #ifdef _WIN32
  57 int ffs(int i);
  58
  59 typedef struct {
  60     long tv_sec;
  61     long tv_usec;
  62 } qemu_timeval;
  63 int qemu_gettimeofday(qemu_timeval *tp);
  64 #else
  65 typedef struct timeval qemu_timeval;
  66 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
  67 #endif /* !_WIN32 */
  68
  69 #endif