mirror of
https://github.com/checkpoint-restore/criu.git
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532944695f
Change made through this commit: - Include copy of flog as a seperate tree. - Modify the makefile to add and compile flog code. Signed-off-by: prakritigoyal19 <prakritigoyal19@gmail.com>
149 lines
6.2 KiB
C
149 lines
6.2 KiB
C
#ifndef __UAPI_FLOG_H__
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#define __UAPI_FLOG_H__
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#include <stdbool.h>
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#include <string.h>
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#include <errno.h>
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/*
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* We work with up to 32 arguments in macros here.
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* If more provided -- behaviour is undefined.
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*/
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/*
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* By Laurent Deniau at https://groups.google.com/forum/#!topic/comp.std.c/d-6Mj5Lko_s
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*/
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#define FLOG_PP_NARG_(...) FLOG_PP_ARG_N(__VA_ARGS__)
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#define FLOG_PP_NARG(...) FLOG_PP_NARG_(1, ##__VA_ARGS__, FLOG_PP_RSEQ_N())
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#define FLOG_PP_ARG_N( _0, _1, _2, _3, _4, \
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_5, _6, _7, _8, _9, \
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_10,_11,_12,_13,_14, \
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_15,_16,_17,_18,_19, \
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_20,_21,_22,_23,_24, \
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_25,_26,_27,_28,_29, \
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_30,_31, N, ...) N
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#define FLOG_PP_RSEQ_N() \
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31, 30, 29, 28, 27, \
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26, 25, 24, 23, 22, \
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21, 20, 19, 18, 17, \
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16, 15, 14, 13, 12, \
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11, 10, 9, 8, 7, \
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6, 5, 4, 3, 2, \
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1, 0
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#define FLOG_GENMASK_0(N, x) 0
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#define FLOG_GENMASK_1(N, op, x, ...) (op(N, 0, x))
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#define FLOG_GENMASK_2(N, op, x, ...) ((op(N, 1, x)) | FLOG_GENMASK_1(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_3(N, op, x, ...) ((op(N, 2, x)) | FLOG_GENMASK_2(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_4(N, op, x, ...) ((op(N, 3, x)) | FLOG_GENMASK_3(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_5(N, op, x, ...) ((op(N, 4, x)) | FLOG_GENMASK_4(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_6(N, op, x, ...) ((op(N, 5, x)) | FLOG_GENMASK_5(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_7(N, op, x, ...) ((op(N, 6, x)) | FLOG_GENMASK_6(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_8(N, op, x, ...) ((op(N, 7, x)) | FLOG_GENMASK_7(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_9(N, op, x, ...) ((op(N, 8, x)) | FLOG_GENMASK_8(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_10(N, op, x, ...) ((op(N, 9, x)) | FLOG_GENMASK_9(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_11(N, op, x, ...) ((op(N, 10, x)) | FLOG_GENMASK_10(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_12(N, op, x, ...) ((op(N, 11, x)) | FLOG_GENMASK_11(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_13(N, op, x, ...) ((op(N, 12, x)) | FLOG_GENMASK_12(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_14(N, op, x, ...) ((op(N, 13, x)) | FLOG_GENMASK_13(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_15(N, op, x, ...) ((op(N, 14, x)) | FLOG_GENMASK_14(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_16(N, op, x, ...) ((op(N, 15, x)) | FLOG_GENMASK_15(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_17(N, op, x, ...) ((op(N, 16, x)) | FLOG_GENMASK_16(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_18(N, op, x, ...) ((op(N, 17, x)) | FLOG_GENMASK_17(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_19(N, op, x, ...) ((op(N, 18, x)) | FLOG_GENMASK_18(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_20(N, op, x, ...) ((op(N, 19, x)) | FLOG_GENMASK_19(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_21(N, op, x, ...) ((op(N, 20, x)) | FLOG_GENMASK_20(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_22(N, op, x, ...) ((op(N, 21, x)) | FLOG_GENMASK_21(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_23(N, op, x, ...) ((op(N, 22, x)) | FLOG_GENMASK_22(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_24(N, op, x, ...) ((op(N, 23, x)) | FLOG_GENMASK_23(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_25(N, op, x, ...) ((op(N, 24, x)) | FLOG_GENMASK_24(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_26(N, op, x, ...) ((op(N, 25, x)) | FLOG_GENMASK_25(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_27(N, op, x, ...) ((op(N, 26, x)) | FLOG_GENMASK_26(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_28(N, op, x, ...) ((op(N, 27, x)) | FLOG_GENMASK_27(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_29(N, op, x, ...) ((op(N, 28, x)) | FLOG_GENMASK_28(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_30(N, op, x, ...) ((op(N, 29, x)) | FLOG_GENMASK_29(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_31(N, op, x, ...) ((op(N, 30, x)) | FLOG_GENMASK_30(N, op, __VA_ARGS__))
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#define FLOG_GENMASK_32(N, op, x, ...) ((op(N, 31, x)) | FLOG_GENMASK_31(N, op, __VA_ARGS__))
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#define FLOG_CONCAT(arg1, arg2) FLOG_CONCAT1(arg1, arg2)
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#define FLOG_CONCAT1(arg1, arg2) FLOG_CONCAT2(arg1, arg2)
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#define FLOG_CONCAT2(arg1, arg2) arg1##arg2
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#define FLOG_GENMASK_(N, op, ...) FLOG_CONCAT(FLOG_GENMASK_, N)(N, op, ##__VA_ARGS__)
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#define FLOG_GENMASK(op, ...) FLOG_GENMASK_(FLOG_PP_NARG(__VA_ARGS__), op, ##__VA_ARGS__)
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#define flog_genbit(ord, n, v, ...) \
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_Generic((v), \
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\
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/* Basic types */ \
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char: 0, \
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signed char: 0, \
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unsigned char: 0, \
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signed short int: 0, \
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unsigned short int: 0, \
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signed int: 0, \
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unsigned int: 0, \
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signed long: 0, \
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unsigned long: 0, \
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signed long long: 0, \
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unsigned long long: 0, \
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\
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/* Not used for a while */ \
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/* float: 12, */ \
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/* double: 13, */ \
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/* long double: 14, */ \
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\
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/* Basic poniters */ \
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char *: (1u << (ord - n - 1)), \
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signed char *: (1u << (ord - n - 1)), \
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unsigned char *: (1u << (ord - n - 1)), \
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signed short int *: 0, \
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unsigned short int *: 0, \
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signed int *: 0, \
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unsigned int *: 0, \
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signed long *: 0, \
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unsigned long *: 0, \
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signed long long *: 0, \
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unsigned long long *: 0, \
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void *: 0, \
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\
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/* Const basic pointers */ \
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const char *: (1u << (ord - n - 1)), \
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const signed char *: (1u << (ord - n - 1)), \
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const unsigned char *: (1u << (ord - n - 1)), \
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const signed short int *: 0, \
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const unsigned short int *: 0, \
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const signed int *: 0, \
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const unsigned int *: 0, \
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const signed long *: 0, \
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const unsigned long *: 0, \
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const signed long long *: 0, \
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const unsigned long long *: 0, \
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const void *: 0, \
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\
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/* Systypes and pointers */ \
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default: -1)
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typedef struct {
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unsigned int magic;
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unsigned int size;
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unsigned int nargs;
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unsigned int mask;
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long fmt;
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long args[0];
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} flog_msg_t;
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extern int flog_encode_msg(int fdout, unsigned int nargs, unsigned int mask, const char *format, ...);
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void flog_decode_msg(int fdout, const char *format, ...);
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extern int flog_decode_all(int fdin, int fdout);
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#define flog_encode(fdout, fmt, ...) \
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flog_encode_msg(fdout, FLOG_PP_NARG(__VA_ARGS__), \
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FLOG_GENMASK(flog_genbit, ##__VA_ARGS__), fmt, ##__VA_ARGS__)
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int flog_map_buf(int fdout);
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int flog_close(int fdout);
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#endif /* __UAPI_FLOG_H__ */
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