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// SPDX-License-Identifier: GPL-3.0-or-later
#include "rrdengine.h"
#define BUFSIZE (512)
/* Caller must hold descriptor lock */
void print_page_cache_descr(struct rrdeng_page_descr *descr)
{
struct page_cache_descr *pg_cache_descr = descr->pg_cache_descr;
char uuid_str[UUID_STR_LEN];
char str[BUFSIZE];
int pos = 0;
uuid_unparse_lower(*descr->id, uuid_str);
pos += snprintfz(str, BUFSIZE - pos, "page(%p) id=%s\n"
"--->len:%"PRIu32" time:%"PRIu64"->%"PRIu64" xt_offset:",
pg_cache_descr->page, uuid_str,
descr->page_length,
(uint64_t)descr->start_time,
(uint64_t)descr->end_time);
if (!descr->extent) {
pos += snprintfz(str + pos, BUFSIZE - pos, "N/A");
} else {
pos += snprintfz(str + pos, BUFSIZE - pos, "%"PRIu64, descr->extent->offset);
}
snprintfz(str + pos, BUFSIZE - pos, " flags:0x%2.2lX refcnt:%u\n\n", pg_cache_descr->flags, pg_cache_descr->refcnt);
debug(D_RRDENGINE, "%s", str);
}
void print_page_descr(struct rrdeng_page_descr *descr)
{
char uuid_str[UUID_STR_LEN];
char str[BUFSIZE];
int pos = 0;
uuid_unparse_lower(*descr->id, uuid_str);
pos += snprintfz(str, BUFSIZE - pos, "id=%s\n"
"--->len:%"PRIu32" time:%"PRIu64"->%"PRIu64" xt_offset:",
uuid_str,
descr->page_length,
(uint64_t)descr->start_time,
(uint64_t)descr->end_time);
if (!descr->extent) {
pos += snprintfz(str + pos, BUFSIZE - pos, "N/A");
} else {
pos += snprintfz(str + pos, BUFSIZE - pos, "%"PRIu64, descr->extent->offset);
}
snprintfz(str + pos, BUFSIZE - pos, "\n\n");
fputs(str, stderr);
}
int check_file_properties(uv_file file, uint64_t *file_size, size_t min_size)
{
int ret;
uv_fs_t req;
uv_stat_t* s;
ret = uv_fs_fstat(NULL, &req, file, NULL);
if (ret < 0) {
fatal("uv_fs_fstat: %s\n", uv_strerror(ret));
}
assert(req.result == 0);
s = req.ptr;
if (!(s->st_mode & S_IFREG)) {
error("Not a regular file.\n");
uv_fs_req_cleanup(&req);
return UV_EINVAL;
}
if (s->st_size < min_size) {
error("File length is too short.\n");
uv_fs_req_cleanup(&req);
return UV_EINVAL;
}
*file_size = s->st_size;
uv_fs_req_cleanup(&req);
return 0;
}
/*
* Tries to open a file in direct I/O mode, falls back to buffered mode if not possible.
* Returns UV error number that is < 0 on failure.
* On success sets (*file) to be the uv_file that was opened.
*/
int open_file_direct_io(char *path, int flags, uv_file *file)
{
uv_fs_t req;
int fd, current_flags, direct;
for (direct = 1 ; direct >= 0 ; --direct) {
#ifdef __APPLE__
/* Apple OS does not support O_DIRECT */
direct = 0;
#endif
current_flags = flags;
if (direct) {
current_flags |= O_DIRECT;
}
fd = uv_fs_open(NULL, &req, path, current_flags, S_IRUSR | S_IWUSR, NULL);
if (fd < 0) {
if ((direct) && (UV_EINVAL == fd)) {
error("File \"%s\" does not support direct I/O, falling back to buffered I/O.", path);
} else {
error("Failed to open file \"%s\".", path);
--direct; /* break the loop */
}
} else {
assert(req.result >= 0);
*file = req.result;
#ifdef __APPLE__
info("Disabling OS X caching for file \"%s\".", path);
fcntl(fd, F_NOCACHE, 1);
#endif
--direct; /* break the loop */
}
uv_fs_req_cleanup(&req);
}
return fd;
}
char *get_rrdeng_statistics(struct rrdengine_instance *ctx, char *str, size_t size)
{
struct page_cache *pg_cache;
pg_cache = &ctx->pg_cache;
snprintfz(str, size,
"metric_API_producers: %ld\n"
"metric_API_consumers: %ld\n"
"page_cache_total_pages: %ld\n"
"page_cache_descriptors: %ld\n"
"page_cache_populated_pages: %ld\n"
"page_cache_commited_pages: %ld\n"
"page_cache_insertions: %ld\n"
"page_cache_deletions: %ld\n"
"page_cache_hits: %ld\n"
"page_cache_misses: %ld\n"
"page_cache_backfills: %ld\n"
"page_cache_evictions: %ld\n"
"compress_before_bytes: %ld\n"
"compress_after_bytes: %ld\n"
"decompress_before_bytes: %ld\n"
"decompress_after_bytes: %ld\n"
"io_write_bytes: %ld\n"
"io_write_requests: %ld\n"
"io_read_bytes: %ld\n"
"io_read_requests: %ld\n"
"io_write_extent_bytes: %ld\n"
"io_write_extents: %ld\n"
"io_read_extent_bytes: %ld\n"
"io_read_extents: %ld\n"
"datafile_creations: %ld\n"
"datafile_deletions: %ld\n"
"journalfile_creations: %ld\n"
"journalfile_deletions: %ld\n",
(long)ctx->stats.metric_API_producers,
(long)ctx->stats.metric_API_consumers,
(long)pg_cache->page_descriptors,
(long)ctx->stats.page_cache_descriptors,
(long)pg_cache->populated_pages,
(long)pg_cache->commited_page_index.nr_commited_pages,
(long)ctx->stats.pg_cache_insertions,
(long)ctx->stats.pg_cache_deletions,
(long)ctx->stats.pg_cache_hits,
(long)ctx->stats.pg_cache_misses,
(long)ctx->stats.pg_cache_backfills,
(long)ctx->stats.pg_cache_evictions,
(long)ctx->stats.before_compress_bytes,
(long)ctx->stats.after_compress_bytes,
(long)ctx->stats.before_decompress_bytes,
(long)ctx->stats.after_decompress_bytes,
(long)ctx->stats.io_write_bytes,
(long)ctx->stats.io_write_requests,
(long)ctx->stats.io_read_bytes,
(long)ctx->stats.io_read_requests,
(long)ctx->stats.io_write_extent_bytes,
(long)ctx->stats.io_write_extents,
(long)ctx->stats.io_read_extent_bytes,
(long)ctx->stats.io_read_extents,
(long)ctx->stats.datafile_creations,
(long)ctx->stats.datafile_deletions,
(long)ctx->stats.journalfile_creations,
(long)ctx->stats.journalfile_deletions
);
return str;
}
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