blob: 7b86ca01d0ff4531dffeffae0b903e950c8f1c39 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/* SPDX-License-Identifier: BSD-3-Clause */
/* Copyright 2014-2020, Intel Corporation */
/*
* log.h -- internal definitions for libpmem log module
*/
#ifndef LOG_H
#define LOG_H 1
#include <stdint.h>
#include <stddef.h>
#include <endian.h>
#include "ctl.h"
#include "util.h"
#include "os_thread.h"
#include "pool_hdr.h"
#include "page_size.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "alloc.h"
#include "fault_injection.h"
#define PMEMLOG_LOG_PREFIX "libpmemlog"
#define PMEMLOG_LOG_LEVEL_VAR "PMEMLOG_LOG_LEVEL"
#define PMEMLOG_LOG_FILE_VAR "PMEMLOG_LOG_FILE"
/* attributes of the log memory pool format for the pool header */
#define LOG_HDR_SIG "PMEMLOG" /* must be 8 bytes including '\0' */
#define LOG_FORMAT_MAJOR 1
#define LOG_FORMAT_FEAT_DEFAULT \
{POOL_FEAT_COMPAT_DEFAULT, POOL_FEAT_INCOMPAT_DEFAULT, 0x0000}
#define LOG_FORMAT_FEAT_CHECK \
{POOL_FEAT_COMPAT_VALID, POOL_FEAT_INCOMPAT_VALID, 0x0000}
static const features_t log_format_feat_default = LOG_FORMAT_FEAT_DEFAULT;
struct pmemlog {
struct pool_hdr hdr; /* memory pool header */
/* root info for on-media format... */
uint64_t start_offset; /* start offset of the usable log space */
uint64_t end_offset; /* maximum offset of the usable log space */
uint64_t write_offset; /* current write point for the log */
/* some run-time state, allocated out of memory pool... */
void *addr; /* mapped region */
size_t size; /* size of mapped region */
int is_pmem; /* true if pool is PMEM */
int rdonly; /* true if pool is opened read-only */
os_rwlock_t *rwlockp; /* pointer to RW lock */
int is_dev_dax; /* true if mapped on device dax */
struct ctl *ctl; /* top level node of the ctl tree structure */
struct pool_set *set; /* pool set info */
};
/* data area starts at this alignment after the struct pmemlog above */
#define LOG_FORMAT_DATA_ALIGN ((uintptr_t)PMEM_PAGESIZE)
/*
* log_convert2h -- convert pmemlog structure to host byte order
*/
static inline void
log_convert2h(struct pmemlog *plp)
{
plp->start_offset = le64toh(plp->start_offset);
plp->end_offset = le64toh(plp->end_offset);
plp->write_offset = le64toh(plp->write_offset);
}
/*
* log_convert2le -- convert pmemlog structure to LE byte order
*/
static inline void
log_convert2le(struct pmemlog *plp)
{
plp->start_offset = htole64(plp->start_offset);
plp->end_offset = htole64(plp->end_offset);
plp->write_offset = htole64(plp->write_offset);
}
#if FAULT_INJECTION
void
pmemlog_inject_fault_at(enum pmem_allocation_type type, int nth,
const char *at);
int
pmemlog_fault_injection_enabled(void);
#else
static inline void
pmemlog_inject_fault_at(enum pmem_allocation_type type, int nth,
const char *at)
{
abort();
}
static inline int
pmemlog_fault_injection_enabled(void)
{
return 0;
}
#endif
#ifdef __cplusplus
}
#endif
#endif
|
