#ifndef QEMU_OSDEP_H #define QEMU_OSDEP_H #include <stdarg.h> #include <stddef.h> #ifdef __OpenBSD__ #include <sys/types.h> #include <sys/signal.h> #endif #include <sys/time.h> #ifndef glue #define xglue(x, y) x ## y #define glue(x, y) xglue(x, y) #define stringify(s) tostring(s) #define tostring(s) #s #endif #ifndef likely #if __GNUC__ < 3 #define __builtin_expect(x, n) (x) #endif #define likely(x) __builtin_expect(!!(x), 1) #define unlikely(x) __builtin_expect(!!(x), 0) #endif #ifdef CONFIG_NEED_OFFSETOF #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) #endif #ifndef container_of #define container_of(ptr, type, member) ({ \ const typeof(((type *) 0)->member) *__mptr = (ptr); \ (type *) ((char *) __mptr - offsetof(type, member));}) #endif /* Convert from a base type to a parent type, with compile time checking. */ #ifdef __GNUC__ #define DO_UPCAST(type, field, dev) ( __extension__ ( { \ char __attribute__((unused)) offset_must_be_zero[ \ -offsetof(type, field)]; \ container_of(dev, type, field);})) #else #define DO_UPCAST(type, field, dev) container_of(dev, type, field) #endif #define typeof_field(type, field) typeof(((type *)0)->field) #define type_check(t1,t2) ((t1*)0 - (t2*)0) #ifndef MIN #define MIN(a, b) (((a) < (b)) ? (a) : (b)) #endif #ifndef MAX #define MAX(a, b) (((a) > (b)) ? (a) : (b)) #endif #ifndef DIV_ROUND_UP #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) #endif #ifndef ARRAY_SIZE #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) #endif #ifndef always_inline #if !((__GNUC__ < 3) || defined(__APPLE__)) #ifdef __OPTIMIZE__ #define inline __attribute__ (( always_inline )) __inline__ #endif #endif #else #define inline always_inline #endif #ifdef __i386__ #define REGPARM __attribute((regparm(3))) #else #define REGPARM #endif #define qemu_printf printf #if defined (__GNUC__) && defined (__GNUC_MINOR__) # define QEMU_GNUC_PREREQ(maj, min) \ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) #else # define QEMU_GNUC_PREREQ(maj, min) 0 #endif int qemu_daemon(int nochdir, int noclose); void *qemu_memalign(size_t alignment, size_t size); void *qemu_vmalloc(size_t size); void qemu_vfree(void *ptr); #define QEMU_MADV_INVALID -1 #if defined(CONFIG_MADVISE) #define QEMU_MADV_WILLNEED MADV_WILLNEED #define QEMU_MADV_DONTNEED MADV_DONTNEED #ifdef MADV_DONTFORK #define QEMU_MADV_DONTFORK MADV_DONTFORK #else #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID #endif #ifdef MADV_MERGEABLE #define QEMU_MADV_MERGEABLE MADV_MERGEABLE #else #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID #endif #elif defined(CONFIG_POSIX_MADVISE) #define QEMU_MADV_WILLNEED POSIX_MADV_WILLNEED #define QEMU_MADV_DONTNEED POSIX_MADV_DONTNEED #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID #else /* no-op */ #define QEMU_MADV_WILLNEED QEMU_MADV_INVALID #define QEMU_MADV_DONTNEED QEMU_MADV_INVALID #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID #endif int qemu_madvise(void *addr, size_t len, int advice); #if defined(__HAIKU__) && defined(__i386__) #define FMT_pid "%ld" #elif defined(WIN64) #define FMT_pid "%" PRId64 #else #define FMT_pid "%d" #endif int qemu_create_pidfile(const char *filename); int qemu_get_thread_id(void); #ifdef _WIN32 static inline void qemu_timersub(const struct timeval *val1, const struct timeval *val2, struct timeval *res) { res->tv_sec = val1->tv_sec - val2->tv_sec; if (val1->tv_usec < val2->tv_usec) { res->tv_sec--; res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000; } else { res->tv_usec = val1->tv_usec - val2->tv_usec; } } #else #define qemu_timersub timersub #endif #endif