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#include <linux/stringify.h>
#ifndef KVM__UTIL_H
#define KVM__UTIL_H
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
/*
* Some bits are stolen from perf tool :)
*/
#include <unistd.h>
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <stdbool.h>
#include <signal.h>
#include <errno.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/types.h>
#include <linux/types.h>
#ifdef __GNUC__
#define NORETURN __attribute__((__noreturn__))
#else
#define NORETURN
#ifndef __attribute__
#define __attribute__(x)
#endif
#endif
extern bool do_debug_print;
#define PROT_RW (PROT_READ|PROT_WRITE)
#define MAP_ANON_NORESERVE (MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE)
extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
extern void die_perror(const char *s) NORETURN;
extern int pr_err(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void pr_warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void pr_info(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
#define pr_debug(fmt, ...) \
do { \
if (do_debug_print) \
pr_info("(%s) %s:%d: " fmt, __FILE__, \
__func__, __LINE__, ##__VA_ARGS__); \
} while (0)
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
#ifndef BUG_ON_HANDLER
# define BUG_ON_HANDLER(condition) \
do { \
if ((condition)) { \
pr_err("BUG at %s:%d", __FILE__, __LINE__); \
raise(SIGABRT); \
} \
} while (0)
#endif
#define BUG_ON(condition) BUG_ON_HANDLER((condition))
#define DIE_IF(cnd) \
do { \
if (cnd) \
die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
__stringify(cnd) "\n"); \
} while (0)
#define WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
if (__ret_warn_on) \
pr_warning("(%s) %s:%d: failed condition: %s", \
__FILE__, __func__, __LINE__, \
__stringify(condition)); \
__ret_warn_on; \
})
#define MSECS_TO_USECS(s) ((s) * 1000)
/* Millisecond sleep */
static inline void msleep(unsigned int msecs)
{
usleep(MSECS_TO_USECS(msecs));
}
/*
* Find last (most significant) bit set. Same implementation as Linux:
* fls(0) = 0, fls(1) = 1, fls(1UL << 63) = 64
*/
static inline int fls_long(unsigned long x)
{
return x ? sizeof(x) * 8 - __builtin_clzl(x) : 0;
}
static inline unsigned long roundup_pow_of_two(unsigned long x)
{
return x ? 1UL << fls_long(x - 1) : 0;
}
#define is_power_of_two(x) ((x) > 0 ? ((x) & ((x) - 1)) == 0 : 0)
struct kvm;
void *mmap_hugetlbfs(struct kvm *kvm, const char *htlbfs_path, u64 size);
void *mmap_anon_or_hugetlbfs(struct kvm *kvm, const char *hugetlbfs_path, u64 size);
#endif /* KVM__UTIL_H */
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