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potentially speed up the database expansion on Windows and macOS

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This commit is contained in:
Krasimir Angelov
2024-01-18 12:19:38 +01:00
parent 5e664b6f69
commit 577ea67bde
1 changed files with 11 additions and 16 deletions
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27
src/runtime/c/pgf/db.cxx
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@@ -143,6 +143,13 @@ static inline ssize_t get_mmap_size(size_t init_size, size_t page_size)
return mmap_size;
}
static inline ssize_t get_mremap_size(size_t file_size, size_t block_size, size_t free_size, size_t page_size)
{
size_t n_pages =
((file_size - free_size + block_size + page_size - 1) / page_size);
return get_next_padovan(n_pages) * page_size ;
}
PGF_INTERNAL
PgfDB::PgfDB(const char* filepath, int flags, int mode, size_t init_size) {
bool is_new = false;
@@ -825,11 +832,8 @@ PGF_INTERNAL_DECL object PgfDB::new_block_descr(object o, size_t size, txn_t txn
size_t free_size = mmap_size - top;
if (block_size > free_size) {
size_t alloc_size =
((block_size - free_size + page_size - 1) / page_size) * page_size;
size_t new_size =
ms->file_size + alloc_size;
get_mremap_size(ms->file_size, block_size, free_size, page_size);
resize_map(new_size, true);
}
@@ -881,11 +885,8 @@ object PgfDB::upd_block_descr(object map, object left, object right)
size_t free_size = mmap_size - top;
if (block_size > free_size) {
size_t alloc_size =
((block_size - free_size + page_size - 1) / page_size) * page_size;
size_t new_size =
ms->file_size + alloc_size;
get_mremap_size(ms->file_size, block_size, free_size, page_size);
resize_map(new_size, true);
// refresh the pointer
@@ -1295,11 +1296,8 @@ object PgfDB::malloc_internal(size_t bytes)
size_t free_size = mmap_size - top;
if (block_size > free_size) {
size_t alloc_size =
((block_size - free_size + page_size - 1) / page_size) * page_size;
size_t new_size =
ms->file_size + alloc_size;
get_mremap_size(ms->file_size, block_size, free_size, page_size);
resize_map(new_size, true);
}
@@ -1331,11 +1329,8 @@ object PgfDB::realloc_internal(object oldo, size_t old_bytes, size_t new_bytes,
ssize_t free_size = mmap_size - top;
if (nb > free_size) {
size_t alloc_size =
((nb - free_size + page_size - 1) / page_size) * page_size;
size_t new_size =
ms->file_size + alloc_size;
get_mremap_size(ms->file_size, nb, free_size, page_size);
resize_map(new_size, true);
}