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os.h
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#ifndef __OS_H_50e2a6b4bce849f794e249a3334cb890__
#define __OS_H_50e2a6b4bce849f794e249a3334cb890__
#include "error.h"
/******************************************************************************/
#ifndef int8
#define int8 int8_t
#endif
#ifndef uint8
#define uint8 uint8_t
#endif
#ifndef int16
#define int16 int16_t
#endif
#ifndef uint16
#define uint16 uint16_t
#endif
#ifndef int32
#define int32 int32_t
#endif
#ifndef uint32
#define uint32 uint32_t
#endif
#ifndef float32
#define float32 float32_t
#endif
#ifndef int64
#define int64 int64_t
#endif
#ifndef uint64
#define uint64 uint64_t
#endif
#define __STDC_FORMAT_MACROS
#ifndef float64
#define float64 float64_t
#endif
#ifndef uint
#define uint uint_t
#endif
#ifndef ulong
#define ulong ulong_t
#endif
#ifndef uintptr
#define uintptr uintptr_t
#endif
#ifdef bool
#undef bool
#endif
#define bool int
#ifdef true
#undef true
#endif
#define true 1
#ifdef false
#undef false
#endif
#define false 0
#ifndef byte
#define byte uint8_t
#endif
/* just for sourceinsight */
#define size_t size_t
/******************************************************************************/
#include <inttypes.h>
#include <stdint.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <malloc.h>
#include <assert.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <grp.h>
#include <pwd.h>
#include <time.h>
#include <math.h>
#include <utime.h>
#include <dirent.h>
#include <syslog.h>
#include <ucontext.h>
#include <byteswap.h>
#include <libgen.h>
#include <netdb.h>
#include <termios.h>
#include <ulimit.h>
#include <utmp.h>
#include <sched.h>
#include <mntent.h>
#include <limits.h>
#include <dlfcn.h>
#include <endian.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <sys/times.h>
#include <sys/timex.h>
#include <sys/utsname.h>
#include <sys/mount.h>
#include <sys/epoll.h>
#include <sys/timerfd.h>
#include <sys/eventfd.h>
#include <sys/signalfd.h>
#include <sys/inotify.h>
#include <sys/utsname.h>
#include <netpacket/packet.h>
#include <netinet/ether.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <linux/netlink.h>
/******************************************************************************/
/* Force a compilation error if condition is true, but also produce a
result (of value 0 and type size_t), so the expression can be used
e.g. in a structure initializer (or where-ever else comma expressions
aren't permitted). */
#ifndef BUILD_BUG_ON
#define BUILD_BUG_ON(_condition) (void)sizeof(struct { int:-!!(_condition); })
#endif
#ifndef BUILD_BUG_NOT_ARRAY
#define BUILD_BUG_NOT_ARRAY(_array) BUILD_BUG_ON(sizeof(_array)==sizeof(void *))
#endif
#ifndef BUILD_BUG_NOT_OBJECT
#define BUILD_BUG_NOT_OBJECT(_obj) BUILD_BUG_ON(sizeof(_obj)==sizeof(void *))
#endif
#ifndef offsetof
#define offsetof(_TYPE, _MEMBER) __builtin_offsetof(_TYPE, _MEMBER)
#endif
#ifndef container_of
/**
* container_of - cast a member of a structure out to the containing structure
* @ptr: the pointer to the container.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
*/
#define container_of(_ptr, _type, _member) \
((_type *)((char *)(_ptr) - offsetof(_type, _member)))
#endif
#ifndef os_count_of
#define os_count_of(x) (sizeof(x)/sizeof((x)[0]))
#endif
#define SYMBOL_TO_STRING_HELPER(x) #x
#define SYMBOL_TO_STRING(x) SYMBOL_TO_STRING_HELPER(x)
#ifndef OS_ALIGN
#define OS_ALIGN(_x, _align) (((_x)+(_align)-1) & ~((_align)-1))
#endif
#define OS_FORMAT_SIZE(_fmt) OS_ALIGN(sizeof(_fmt), 4)
#ifndef OS_ALIGNED
#define OS_ALIGNED(_align) __attribute__ ((aligned (_align)))
#endif
#ifndef OS_ALIGNP
#define OS_ALIGNP OS_ALIGNED(sizeof(void *))
#endif
#ifndef NO_ALIGN
#define NO_ALIGN OS_ALIGNED(1)
#endif
#ifndef OS_PAGESIZE
#define OS_PAGESIZE (4*1024)
#endif
#ifndef OS_CACHELINE
#define OS_CACHELINE 64
#endif
#ifndef OS_CACHEALIGN
#define OS_CACHEALIGN OS_ALIGNED(OS_CACHELINE)
#endif
#ifndef OS_IFNAME_LEN
#define OS_IFNAME_LEN (16 - 1)
#endif
#ifndef OS_LINE_SHORT
#define OS_LINE_SHORT (128 - 1)
#endif
#ifndef OS_LINE_LEN
#define OS_LINE_LEN (1*1024 - 1)
#endif
#ifndef OS_PAGE_LEN
#define OS_PAGE_LEN (4*1024 - 1)
#endif
#ifndef OS_BLOCK_LEN
#define OS_BLOCK_LEN (16*1024 - 1)
#endif
#ifndef OS_FILE_LEN
#define OS_FILE_LEN (64*1024 - 1)
#endif
#ifndef OS_BIG_LEN
#define OS_BIG_LEN (256*1024 - 1)
#endif
#ifndef OS_HUGE_LEN
#define OS_HUGE_LEN (1024*1024 - 1)
#endif
#ifndef OS_FILENAME_LEN
#define OS_FILENAME_LEN OS_LINE_LEN
#endif
#ifndef lanmbda
#define lanmbda(_type, _body) ({ _type _lanmbda _body _lanmbda; })
#endif
#ifndef ilanmbda
#define ilanmbda(_type, _body) lanmbda(int, _body)
#endif
#ifndef __space
#define __space " "
#endif
#ifndef __tab
#define __tab __space __space __space __space
#endif
#ifndef __tab2
#define __tab2 __tab __tab
#endif
#ifndef __tab3
#define __tab3 __tab2 __tab
#endif
#ifndef __tab4
#define __tab4 __tab3 __tab
#endif
#ifndef __crlf
#define __crlf "\n"
#endif
#ifndef __crlf2
#define __crlf2 __crlf __crlf
#endif
#ifndef __crlf3
#define __crlf3 __crlf2 __crlf
#endif
#ifndef __crlf4
#define __crlf4 __crlf3 __crlf
#endif
#ifndef __notes
#define __notes "#"
#endif
#ifndef __unknow
#define __unknow "unknow"
#endif
#ifndef __true
#define __true "true"
#endif
#ifndef __false
#define __false "false"
#endif
#ifndef __success
#define __success "success"
#endif
#ifndef __failed
#define __failed "failed"
#endif
#ifndef __yes
#define __yes "yes"
#endif
#ifndef __no
#define __no "no"
#endif
#ifndef __error
#define __error "error"
#endif
#ifndef __ok
#define __ok "ok"
#endif
#ifndef bool_string
#define bool_string(_is_ture) ((_is_ture)?__true:__false)
#endif
#ifndef success_string
#define success_string(_is_success) ((_is_success)?__success:__failed)
#endif
#ifndef yes_string
#define yes_string(_is_yes) ((_is_yes)?__yes:__no)
#endif
#ifndef ok_string
#define ok_string(_err) ((_err)<0?__error:__ok)
#endif
#define os_malloc(_size) malloc(_size)
#define os_calloc(_count, _size) calloc(_count, _size)
#define os_realloc(_ptr, _size) realloc(_ptr, _size)
#define os_free(_ptr) do{ \
if (_ptr) { \
free(_ptr); \
_ptr = NULL; \
} \
}while(0)
#ifndef os_memzero
#define os_memzero(_obj, _size) memset(_obj, 0, _size)
#endif
#ifndef os_objzero
#define os_objzero(_obj) os_memzero(_obj, sizeof(*(_obj)))
#endif
#ifndef os_objscpy
#define os_objscpy(_dst, _src) memcpy(_dst, _src, sizeof(*(_src)))
#endif
#ifndef os_objdcpy
#define os_objdcpy(_dst, _src) memcpy(_dst, _src, sizeof(*(_dst)))
#endif
#ifndef os_objcpy
#define os_objcpy(_dst, _src) os_objdcpy(_dst, _src)
#endif
#ifndef os_do_nothing
#define os_do_nothing() do{}while(0)
#endif
#ifndef os_fake_declare
#define os_fake_declare extern int __the_value_not_used_forever
#endif
#ifndef is_good_value
#define is_good_value(_v, _begin, _end) ((_v) >= (_begin) && (_v) < (_end))
#endif
#ifndef is_good_enum
#define is_good_enum(_id, _end) is_good_value(_id, 0, _end)
#endif
#ifndef os_close
#define os_close(_fd) ({ \
int m_err = 0; \
if ((_fd)>=0) { \
m_err = close(_fd); \
_fd = -1; \
} \
\
m_err; \
}) /* end */
#endif
#ifndef os_fclose
#define os_fclose(_stream) ({ \
int m_err = 0; \
if (_stream) { \
m_err = fclose(_stream); \
_stream = NULL; \
} \
\
m_err; \
}) /* end */
#endif
#ifndef os_min
#define os_min(_x, _y) ((_x)<(_y)?(_x):(_y))
#endif
#ifndef os_max
#define os_max(_x, _y) ((_x)>(_y)?(_x):(_y))
#endif
#ifndef os_printf
#define os_printf(_fmt, _args...) printf(_fmt, ##_args)
#endif
#ifndef os_println
#define os_println(_fmt, _args...) printf(_fmt __crlf, ##_args)
#endif
#ifndef os_sprintf
#define os_sprintf(_buf, _fmt, _args...) sprintf(_buf, _fmt, ##_args)
#endif
#ifndef os_vsprintf
#define os_vsprintf(_buf, _fmt, _args) vsprintf(_buf, _fmt, _args)
#endif
#ifndef os_snprintf
#define os_snprintf(_buf, _size, _fmt,_args...) snprintf(_buf, _size, _fmt, ##_args)
#endif
/*
* snprintf for array buffer + offset
*/
#ifndef os_soprintf
#define os_soprintf(_buf, _offset, _fmt, _args...) os_snprintf(_buf+(_offset), sizeof(_buf)-(_offset), _fmt, ##_args)
#endif
/*
* snprintf for array buffer
*/
#ifndef os_saprintf
#define os_saprintf(_buf, _fmt, _args...) os_snprintf(_buf, sizeof(_buf), _fmt, ##_args)
#endif
#ifndef os_assert
#define os_assert(x) assert(x)
#endif
#ifndef os_assertV
#define os_assertV(_x) (os_assert(0), _x)
#endif
#if 0
/*
* ENUM: c enum macro
*/
#define XXX_ENUM_MAPPER(_) \
_(MOD, NAME_A, VALUE_A) \
_(MOD, NAME_A, VALUE_B) \
_(MOD, NAME_A, VALUE_C) \
/* end */
DECLARE_ENUM(MOD, mod, MOD_ENUM_MAPPER, MOD_END);
static inline enum_ops_t *mod_ops(void);
static inline bool is_good_mod(int id);
static inline char *mod_getnamebyid(int id);
static inline int mod_getidbyname(const char *name);
#define MOD_NAME_A MOD_NAME_A
#define MOD_NAME_B MOD_NAME_B
#define MOD_NAME_C MOD_NAME_C
#define MOD_END MOD_END
#endif
#define __ENUM_MAP_VALUE(_MOD, _name, _value) _MOD##_##_name = _value,
#define __ENUM_MAP_NAME(_MOD, _name, _value) [_MOD##_##_name] = #_name,
#define DECLARE_ENUM(_MOD, _mod, _mapper, _end) \
enum { \
_mapper(__ENUM_MAP_VALUE) \
\
_end \
}; \
\
static inline bool \
is_good_##_mod(int id) \
{ \
return is_good_enum(id, _end); \
} \
\
static inline char ** \
_mod##_strings(void) \
{ \
static char *array[_end] = { _mapper(__ENUM_MAP_NAME) }; \
\
return array; \
} \
\
static inline char * \
_mod##_getnamebyid(int id) \
{ \
char **array = _mod##_strings(); \
\
return is_good_##_mod(id)?array[id]:__unknow; \
} \
\
static inline int \
_mod##_getidbyname(const char *s) \
{ \
char **array = _mod##_strings(); \
\
return os_array_search_str(array, s, 0, _end); \
} \
\
os_fake_declare \
/* end */
enum {
__MV_GO = 0,
__MV_BREAK = 1,
};
typedef int32 mv_t;
typedef union {
mv_t v;
struct {
int32 error:24;
int32 control:8;
} v2;
struct {
int32 error:16;
int32 control:8;
int32 private:8;
} v3;
struct {
int32 error:8;
int32 control:8;
int32 private:8;
int32 value:8;
} v4;
}
mv_u;
#define MV_INITER { .v = 0 }
#define mv2_error(_mv) (_mv).v2.error
#define mv2_control(_mv) (_mv).v2.control
#define __mv2_INITER(_control, _error) { \
.v2 = { \
.error = _error, \
.control= _control, \
} \
}
static inline mv_t
__mv2_return(int control, int error)
{
mv_u mv = __mv2_INITER(control, error);
return mv.v;
}
#define mv2_break(_result) __mv2_return(__MV_BREAK, _result)
#define mv2_go(_result) __mv2_return(__MV_GO, _result)
enum { mv2_ok = 0 };
#define is_mv2_break(_mv) (__MV_BREAK==mv2_control(_mv))
#define is_mv2_go(_mv) (__MV_GO==mv2_control(_mv))
typedef uint32 os_ip4_t;
#define OS_FORMAT_IPSTRING "255.255.255.255"
#define OS_IPSTRING_LEN OS_FORMAT_SIZE(OS_FORMAT_IPSTRING)
typedef char ip_string_t[OS_IPSTRING_LEN];
static inline char *
os_ipstring(os_ip4_t ip, ip_string_t string)
{
return (char *)inet_ntop(AF_INET, &ip, string, OS_IPSTRING_LEN);
}
static inline char *
unsafe_ipstring(os_ip4_t ip)
{
static ip_string_t string;
return os_ipstring(ip, string);
}
#define OS_FORMAT_FULLTIME "1900-01-01#00:00:00"
#define OS_FULLTIME_STRING_LEN OS_FORMAT_SIZE(OS_FORMAT_FULLTIME)
typedef char time_string_t[OS_FULLTIME_STRING_LEN];
static inline char *
os_time_string(time_t t, time_string_t string)
{
struct tm *tm = gmtime(&t);
os_snprintf(string, OS_FULLTIME_STRING_LEN,
"%04d-%02d-%02d#%02d:%02d:%02d",
1900 + tm->tm_year,
1 + tm->tm_mon,
tm->tm_mday,
tm->tm_hour,
tm->tm_min,
(61==tm->tm_sec)?59:tm->tm_sec);
return string;
}
static inline char *
unsafe_time_string(time_t t)
{
static time_string_t string;
return os_time_string(t, string);
}
static inline bool
is_good_str(const char *s)
{
return s && s[0];
}
static inline bool
is_option_args(char *args)
{
return args
&& '-'==args[0]
&& '-'==args[1]
&& args[2];
}
#define OS_VAR(_name) __the_os_##_name##_sb_var
#define OS_VAR_MAPPER(_) \
_(int, option) \
_(int, levle) \
_(time_t, time) \
_(uint32, seq) \
/* end */
#define __DECLARE_VARS(_type, _name) _type OS_VAR(_name);
#define __EXTERN_VARS(_type, _name) extern __DECLARE_VARS(_type, _name)
#define DECLARE_OS_VARS OS_VAR_MAPPER(__DECLARE_VARS) os_fake_declare
#define EXTERN_OS_VARS OS_VAR_MAPPER(__EXTERN_VARS) os_fake_declare
EXTERN_OS_VARS;
static inline void
set_option(int flag)
{
OS_VAR(option) |= flag;
}
static inline void
clr_option(int flag)
{
OS_VAR(option) &= ~flag;
}
static inline bool
is_option(int flag)
{
return flag==(flag & OS_VAR(option));
}
#define option_analysis(_opt, _cmd) nameflag_analysis(_opt, _cmd)
#define option_dump(_opt, _fmt, _args...) do{ \
if (is_option(_opt)) { \
os_println(_fmt, ##_args); \
} \
}while(0)
#define os_fstat(_file, _st) stat(_file, _st)
static inline int
os_fsize(const char *file)
{
struct stat st;
return 0==os_fstat(file, &st)?st.st_size:-errno;
}
static inline mode_t
os_fmode(const char *file)
{
struct stat st;
return 0==os_fstat(file, &st)?st.st_mode:0;
}
static inline bool
os_fisdir(const char *file)
{
mode_t mode = os_fmode(file);
return S_ISDIR(mode);
}
static inline bool
os_fexist(const char *file)
{
int fd = open(file, O_RDONLY, S_IRUSR | S_IRGRP);
if (fd<0) {
return false;
} else {
close(fd);
return true;
}
}
static inline int
os_fhandle(const char *file, int (*handle)(const char *file, int fd))
{
int fd = open(file, O_RDONLY, S_IRUSR | S_IRGRP);
if (fd<0) {
return -errno;
}
int err = (*handle)(file, fd);
close(fd);
return err;
}
#ifndef os_munmap
#define os_munmap(_file, _mem, _size) ({ \
int m_err = 0; \
\
if (_mem) { \
m_err = munmap(_mem, _size);\
if (m_err<0) { \
m_err = -errno; \
os_println("munmap %s error:%d ...", _file, m_err); \
} else { \
_mem = NULL; \
} \
} \
\
m_err; \
}) /* end */
#endif
#ifndef os_mmap
#define os_mmap(_size, _prot, _flag, _fd, _offset) ({ \
void *m_mm = mmap(NULL, _size, _prot, _flag, _fd, _offset); \
\
(MAP_FAILED==m_mm)?NULL:m_mm; \
})
#endif
static inline int
os_mmap_w(const char *file, void *buf, int len, bool sync)
{
char *action;
void *mem = NULL;
int fd = -1, err = 0;
fd = open(file, O_CREAT|O_RDWR, 0664);
if (fd<0) {
err = -errno; action = "open"; goto ERROR;
}
err = ftruncate(fd, len);
if (err<0) {
err = -errno; action = "ftruncate"; goto ERROR;
}
mem = os_mmap(len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (NULL==mem) {
err = -errno; action = "mmap"; goto ERROR;
}
memcpy(mem, buf, len);
msync(mem, len, sync?MS_SYNC:MS_ASYNC);
madvise(mem, len, MADV_DONTNEED);
ERROR:
if (err<0) {
os_println("%s %s error:%d", action, file, -errno);
}
os_munmap(file, mem, len);
os_close(fd);
return err;
}
static inline int
os_mmap_w_sync(const char *file, void *buf, int len)
{
return os_mmap_w(file, buf, len, true);
}
static inline int
os_mmap_w_async(const char *file, void *buf, int len)
{
return os_mmap_w(file, buf, len, false);
}
static inline int
os_mmap_r(const char *file, int (*handle)(void *buf, int len))
{
char *action;
void *mem = NULL;
int fd = -1, err = 0, size;
size = os_fsize(file);
if (size<0) {
err = size; action = "fsize"; goto ERROR;
}
fd = open(file, O_RDONLY);
if (fd<0) {
err = -errno; action = "open"; goto ERROR;
}
mem = os_mmap(size, PROT_READ, MAP_PRIVATE, fd, 0);
if (NULL==mem) {
err = -errno; action = "mmap"; goto ERROR;
}
err = (*handle)(mem, size);
if (err<0) {
action = "handle"; goto ERROR;
}
ERROR:
if (err<0) {
os_println("%s %s error:%d", action, file, -errno);
}
os_munmap(file, mem, size);
os_close(fd);
return err;
}
enum {
MM_F_WRITE = 0x0001,
MM_F_EXEC = 0x0002,
MM_F_SHARED = 0x0004,
};
typedef struct {
void *addr;
uint32 offset;
uint32 size;
uint32 flag;
int fd;
} mmap_t;
#define INVALID_MMAP_OFFSET ((uint32)(-1))
#define MMAP_OBJ(_mm, _offset) ((byte *)(_mm)->addr + _offset)
#define MMAP_OFFSET(_mm, _obj) ((byte *)(_obj) - (byte *)(_mm)->addr)
static inline byte *
mmap_obj(mmap_t *mm, uint32 offset)
{
return MMAP_OBJ(mm, offset);
}
static inline uint32
mmap_offset(mmap_t *mm, void *obj)
{
if (obj >= mm->addr) {
return MMAP_OFFSET(mm, obj);
} else {
return INVALID_MMAP_OFFSET;
}
}
static inline bool
mmap_enough(mmap_t *mm, uint32 offset, uint32 size)
{
return offset + size <= mm->size;
}
#ifndef use_blist_dprint
#define use_blist_dprint 0
#endif
#if use_blist_dprint
#define blist_dprint(_fmt, _args...) os_println(_fmt, ##_args)
#else
#define blist_dprint(_fmt, _args...) os_do_nothing()
#endif
#ifndef bpointer_t
#define bpointer_t uint32
#endif
#define INVALID_BPOINTER 0
typedef struct {
bpointer_t next;
bpointer_t prev;
} blist_head_t;
#define BLIST_OBJ(_mm, _type, _ptr) (_type *)mmap_obj(_mm, _ptr)
#define blist_entry(obj, type, member) container_of(obj, type, member)
static inline blist_head_t *
blist_obj(mmap_t *mm, bpointer_t ptr)
{
return (blist_head_t *)MMAP_OBJ(mm, ptr);
}
static inline bpointer_t
blist_ptr(mmap_t *mm, void *obj)
{
return MMAP_OFFSET(mm, obj);
}
static inline blist_head_t *
blist_objnext(mmap_t *mm, bpointer_t ptr)
{
return blist_obj(mm, blist_obj(mm, ptr)->next);
}
static inline blist_head_t *
blist_objprev(mmap_t *mm, bpointer_t ptr)
{
return blist_obj(mm, blist_obj(mm, ptr)->prev);
}
#define BLIST_FIRST(mm, list) blist_obj(mm, list)->next
#define BLIST_TAIL(mm, list) blist_obj(mm, list)->prev
#if 0
static inline void
INIT_LIST_HEAD(struct list_head *list)
{
list->next = list;
list->prev = list;
}
#else
static inline void
INIT_BLIST_HEAD(mmap_t *mm, bpointer_t list)
{
blist_head_t *objlist = blist_obj(mm, list);
objlist->next = list;
objlist->prev = list;
}
#endif
#if 0
/*
* Insert a new entry between two known consecutive entries.
*
* This is only for internal list manipulation where we know
* the prev/next entries already!
*/
static inline void __list_add(struct list_head *new,
struct list_head *prev,
struct list_head *next)
{
next->prev = new;
new->next = next;
new->prev = prev;
prev->next = new;
}
#else
static inline void
__blist_add(mmap_t *mm,
bpointer_t new,
bpointer_t prev,
bpointer_t next)
{
blist_head_t *objnew = blist_obj(mm, new);
blist_head_t *objprev = blist_obj(mm, prev);
blist_head_t *objnext = blist_obj(mm, next);
objnext->prev = new;