[qemu.git] / osdep.h

#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

#ifndef _WIN32
#include <sys/time.h>
#endif

#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

#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 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

void *qemu_memalign(size_t alignment, size_t size);
void *qemu_vmalloc(size_t size);
void qemu_vfree(void *ptr);

int qemu_create_pidfile(const char *filename);

#ifdef _WIN32
int ffs(int i);

typedef struct {
    long tv_sec;
    long tv_usec;
} qemu_timeval;
int qemu_gettimeofday(qemu_timeval *tp);
#else
typedef struct timeval qemu_timeval;
#define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
#endif /* !_WIN32 */

#endif
Commit	Line	Data
	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