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mdbx: return MDBX_EBADSIGN when mdbx_env_close() called concurrently from several threads.

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Change-Id: I03a8c87bc51eefc5236baa52cee8b12a9f8aa0e2
This commit is contained in:
Leonid Yuriev
2020-04-20 17:00:41 +03:00
parent b64e47078f
commit 5765d92ac7
3 changed files with 73 additions and 61 deletions
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20
src/internals.h
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@@ -862,15 +862,7 @@ typedef struct MDBX_cursor_couple {
/* The database environment. */
struct MDBX_env {
#define MDBX_ME_SIGNATURE UINT32_C(0x9A899641)
size_t me_signature;
mdbx_mmap_t me_dxb_mmap; /* The main data file */
#define me_map me_dxb_mmap.dxb
#define me_lazy_fd me_dxb_mmap.fd
mdbx_filehandle_t me_dsync_fd;
mdbx_mmap_t me_lck_mmap; /* The lock file */
#define me_lfd me_lck_mmap.fd
#define me_lck me_lck_mmap.lck
uint32_t me_signature;
/* Failed to update the meta page. Probably an I/O error. */
#define MDBX_FATAL_ERROR UINT32_C(0x80000000)
/* Additional flag for mdbx_sync_locked() */
@@ -879,7 +871,15 @@ struct MDBX_env {
#define MDBX_ENV_ACTIVE UINT32_C(0x20000000)
/* me_txkey is set */
#define MDBX_ENV_TXKEY UINT32_C(0x10000000)
uint32_t me_flags; /* see mdbx_env */
uint32_t me_flags;
mdbx_mmap_t me_dxb_mmap; /* The main data file */
#define me_map me_dxb_mmap.dxb
#define me_lazy_fd me_dxb_mmap.fd
mdbx_filehandle_t me_dsync_fd;
mdbx_mmap_t me_lck_mmap; /* The lock file */
#define me_lfd me_lck_mmap.fd
#define me_lck me_lck_mmap.lck
unsigned me_psize; /* DB page size, inited from me_os_psize */
unsigned me_psize2log; /* log2 of DB page size */
unsigned me_os_psize; /* OS page size, from mdbx_syspagesize() */