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 _WIN32
  11 #include <sys/time.h>
  12 #endif
  13
  14 #ifndef glue
  15 #define xglue(x, y) x ## y
  16 #define glue(x, y) xglue(x, y)
  17 #define stringify(s)    tostring(s)
  18 #define tostring(s)     #s
  19 #endif
  20
  21 #ifndef likely
  22 #if __GNUC__ < 3
  23 #define __builtin_expect(x, n) (x)
  24 #endif
  25
  26 #define likely(x)   __builtin_expect(!!(x), 1)
  27 #define unlikely(x)   __builtin_expect(!!(x), 0)
  28 #endif
  29
  30 #ifndef offsetof
  31 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
  32 #endif
  33 #ifndef container_of
  34 #define container_of(ptr, type, member) ({                      \
  35         const typeof(((type *) 0)->member) *__mptr = (ptr);     \
  36         (type *) ((char *) __mptr - offsetof(type, member));})
  37 #endif
  38
  39 #define typeof_field(type, field) typeof(((type *)0)->field)
  40 #define type_check(t1,t2) ((t1*)0 - (t2*)0)
  41
  42 #ifndef MIN
  43 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
  44 #endif
  45 #ifndef MAX
  46 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
  47 #endif
  48
  49 #ifndef ARRAY_SIZE
  50 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  51 #endif
  52
  53 #ifndef always_inline
  54 #if !((__GNUC__ < 3) || defined(__APPLE__))
  55 #ifdef __OPTIMIZE__
  56 #define inline __attribute__ (( always_inline )) __inline__
  57 #endif
  58 #endif
  59 #else
  60 #define inline always_inline
  61 #endif
  62
  63 #ifdef __i386__
  64 #define REGPARM __attribute((regparm(3)))
  65 #else
  66 #define REGPARM
  67 #endif
  68
  69 #define qemu_printf printf
  70
  71 #if defined (__GNUC__) && defined (__GNUC_MINOR__)
  72 # define QEMU_GNUC_PREREQ(maj, min) \
  73          ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  74 #else
  75 # define QEMU_GNUC_PREREQ(maj, min) 0
  76 #endif
  77
  78 void *qemu_memalign(size_t alignment, size_t size);
  79 void *qemu_vmalloc(size_t size);
  80 void qemu_vfree(void *ptr);
  81
  82 int qemu_create_pidfile(const char *filename);
  83
  84 #ifdef _WIN32
  85 int ffs(int i);
  86
  87 typedef struct {
  88     long tv_sec;
  89     long tv_usec;
  90 } qemu_timeval;
  91 int qemu_gettimeofday(qemu_timeval *tp);
  92 #else
  93 typedef struct timeval qemu_timeval;
  94 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
  95 #endif /* !_WIN32 */
  96
  97 #endif