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Support inmemory journal

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This commit is contained in:
Vitaliy Filippov
2019-11-28 18:06:50 +03:00
parent e1ac4dba23
commit 9fa0d3325f
11 changed files with 110 additions and 29 deletions
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blockstore_journal.cpp
+25 -3
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@@ -76,10 +76,14 @@ journal_entry* prefill_single_journal_entry(journal_t & journal, uint16_t type,
journal.sector_info[journal.cur_sector].offset = journal.next_free;
journal.in_sector_pos = 0;
journal.next_free = (journal.next_free+512) < journal.len ? journal.next_free + 512 : 512;
memset(journal.sector_buf + 512*journal.cur_sector, 0, 512);
memset(journal.inmemory
? journal.buffer + journal.sector_info[journal.cur_sector].offset
: journal.sector_buf + 512*journal.cur_sector, 0, 512);
}
journal_entry *je = (struct journal_entry*)(
journal.sector_buf + 512*journal.cur_sector + journal.in_sector_pos
(journal.inmemory
? journal.buffer + journal.sector_info[journal.cur_sector].offset
: journal.sector_buf + 512*journal.cur_sector) + journal.in_sector_pos
);
journal.in_sector_pos += size;
je->magic = JOURNAL_MAGIC;
@@ -93,9 +97,27 @@ void prepare_journal_sector_write(journal_t & journal, io_uring_sqe *sqe, std::f
{
journal.sector_info[journal.cur_sector].usage_count++;
ring_data_t *data = ((ring_data_t*)sqe->user_data);
data->iov = (struct iovec){ journal.sector_buf + 512*journal.cur_sector, 512 };
data->iov = (struct iovec){
(journal.inmemory
? journal.buffer + journal.sector_info[journal.cur_sector].offset
: journal.sector_buf + 512*journal.cur_sector),
512
};
data->callback = cb;
my_uring_prep_writev(
sqe, journal.fd, &data->iov, 1, journal.offset + journal.sector_info[journal.cur_sector].offset
);
}
journal_t::~journal_t()
{
if (sector_buf)
free(sector_buf);
if (sector_info)
free(sector_info);
if (buffer)
free(buffer);
sector_buf = NULL;
sector_info = NULL;
buffer = NULL;
}