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
|
// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_DATAFILE_H
#define NETDATA_DATAFILE_H
#include "rrdengine.h"
/* Forward declarations */
struct rrdengine_datafile;
struct rrdengine_journalfile;
struct rrdengine_instance;
#define DATAFILE_PREFIX "datafile-"
#define DATAFILE_EXTENSION ".ndf"
#ifndef MAX_DATAFILE_SIZE
#define MAX_DATAFILE_SIZE (512LU * 1024LU * 1024LU)
#endif
#if MIN_DATAFILE_SIZE > MAX_DATAFILE_SIZE
#error MIN_DATAFILE_SIZE > MAX_DATAFILE_SIZE
#endif
#define MIN_DATAFILE_SIZE (4LU * 1024LU * 1024LU)
#define MAX_DATAFILES (65536 * 4) /* Supports up to 64TiB for now */
#define TARGET_DATAFILES (50)
// When trying to acquire a datafile for deletion and an attempt to evict pages is completed
// the acquire for deletion will return true after this timeout
#define DATAFILE_DELETE_TIMEOUT_SHORT (1)
#define DATAFILE_DELETE_TIMEOUT_LONG (120)
typedef enum __attribute__ ((__packed__)) {
DATAFILE_ACQUIRE_OPEN_CACHE = 0,
DATAFILE_ACQUIRE_PAGE_DETAILS,
DATAFILE_ACQUIRE_RETENTION,
// terminator
DATAFILE_ACQUIRE_MAX,
} DATAFILE_ACQUIRE_REASONS;
/* only one event loop is supported for now */
struct rrdengine_datafile {
unsigned tier;
unsigned fileno;
uv_file file;
uint64_t pos;
uv_rwlock_t extent_rwlock;
struct rrdengine_instance *ctx;
struct rrdengine_journalfile *journalfile;
struct rrdengine_datafile *prev;
struct rrdengine_datafile *next;
struct {
SPINLOCK spinlock;
bool populated;
} populate_mrg;
struct {
SPINLOCK spinlock;
size_t running;
size_t flushed_to_open_running;
} writers;
struct {
SPINLOCK spinlock;
unsigned lockers;
unsigned lockers_by_reason[DATAFILE_ACQUIRE_MAX];
bool available;
time_t time_to_evict;
} users;
struct {
SPINLOCK spinlock;
Pvoid_t pending_epdl_by_extent_offset_judyL;
} extent_queries;
};
bool datafile_acquire(struct rrdengine_datafile *df, DATAFILE_ACQUIRE_REASONS reason);
void datafile_release(struct rrdengine_datafile *df, DATAFILE_ACQUIRE_REASONS reason);
bool datafile_acquire_for_deletion(struct rrdengine_datafile *df, bool is_shutdown);
void datafile_list_insert(struct rrdengine_instance *ctx, struct rrdengine_datafile *datafile, bool having_lock);
void datafile_list_delete_unsafe(struct rrdengine_instance *ctx, struct rrdengine_datafile *datafile);
void generate_datafilepath(struct rrdengine_datafile *datafile, char *str, size_t maxlen);
int close_data_file(struct rrdengine_datafile *datafile);
int unlink_data_file(struct rrdengine_datafile *datafile);
int destroy_data_file_unsafe(struct rrdengine_datafile *datafile);
int create_data_file(struct rrdengine_datafile *datafile);
int create_new_datafile_pair(struct rrdengine_instance *ctx, bool having_lock);
int init_data_files(struct rrdengine_instance *ctx);
void finalize_data_files(struct rrdengine_instance *ctx);
#endif /* NETDATA_DATAFILE_H */
|
