osdep.h

   1 #ifndef QEMU_OSDEP_H
   2 #define QEMU_OSDEP_H
   3
   4 #include <stdarg.h>
   5 #include <stddef.h>
   6 #ifdef __OpenBSD__
   7 #include <sys/types.h>
   8 #include <sys/signal.h>
   9 #endif
  10
  11 #ifndef _WIN32
  12 #include <sys/time.h>
  13 #endif
  14
  15 #ifndef glue
  16 #define xglue(x, y) x ## y
  17 #define glue(x, y) xglue(x, y)
  18 #define stringify(s)    tostring(s)
  19 #define tostring(s)     #s
  20 #endif
  21
  22 #ifndef likely
  23 #if __GNUC__ < 3
  24 #define __builtin_expect(x, n) (x)
  25 #endif
  26
  27 #define likely(x)   __builtin_expect(!!(x), 1)
  28 #define unlikely(x)   __builtin_expect(!!(x), 0)
  29 #endif
  30
  31 #ifdef CONFIG_NEED_OFFSETOF
  32 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
  33 #endif
  34 #ifndef container_of
  35 #define container_of(ptr, type, member) ({                      \
  36         const typeof(((type *) 0)->member) *__mptr = (ptr);     \
  37         (type *) ((char *) __mptr - offsetof(type, member));})
  38 #endif
  39
  40 #define typeof_field(type, field) typeof(((type *)0)->field)
  41 #define type_check(t1,t2) ((t1*)0 - (t2*)0)
  42
  43 #ifndef MIN
  44 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
  45 #endif
  46 #ifndef MAX
  47 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
  48 #endif
  49
  50 #ifndef ARRAY_SIZE
  51 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  52 #endif
  53
  54 #ifndef always_inline
  55 #if !((__GNUC__ < 3) || defined(__APPLE__))
  56 #ifdef __OPTIMIZE__
  57 #define inline __attribute__ (( always_inline )) __inline__
  58 #endif
  59 #endif
  60 #else
  61 #define inline always_inline
  62 #endif
  63
  64 #ifdef __i386__
  65 #define REGPARM __attribute((regparm(3)))
  66 #else
  67 #define REGPARM
  68 #endif
  69
  70 #define qemu_printf printf
  71
  72 #if defined (__GNUC__) && defined (__GNUC_MINOR__)
  73 # define QEMU_GNUC_PREREQ(maj, min) \
  74          ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  75 #else
  76 # define QEMU_GNUC_PREREQ(maj, min) 0
  77 #endif
  78
  79 void *qemu_memalign(size_t alignment, size_t size);
  80 void *qemu_vmalloc(size_t size);
  81 void qemu_vfree(void *ptr);
  82
  83 int qemu_create_pidfile(const char *filename);
  84
  85 #ifdef _WIN32
  86 int ffs(int i);
  87
  88 typedef struct {
  89     long tv_sec;
  90     long tv_usec;
  91 } qemu_timeval;
  92 int qemu_gettimeofday(qemu_timeval *tp);
  93 #else
  94 typedef struct timeval qemu_timeval;
  95 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
  96 #endif /* !_WIN32 */
  97
  98 #endif