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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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19
mdbx.h
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@@ -1914,14 +1914,17 @@ LIBMDBX_API int mdbx_env_set_syncperiod(MDBX_env *env,
*
* Returns A non-zero error value on failure and 0 on success.
* Some possible errors are:
* - MDBX_BUSY = The write transaction is running by other thread, in such
* case MDBX_env instance has NOT be destroyed not released!
* NOTE: if any OTHER error code was returned then given
* MDBX_env instance has been destroyed and released.
* - MDBX_PANIC = If mdbx_env_close_ex() was called in the child process
* after fork(). In this case MDBX_PANIC is a expecte,
* i.e. MDBX_env instance was freed in proper manner.
* - MDBX_EIO = an error occurred during synchronization. */
* - MDBX_BUSY = The write transaction is running by other thread, in such
* case MDBX_env instance has NOT be destroyed not released!
* NOTE: if any OTHER error code was returned then given
* MDBX_env instance has been destroyed and released.
* - MDBX_EBADSIGN = Environment handle already closed (i.e. mdbx_env_close()
* was already called or not valid (i.e. was not created
* by mdbx_env_create()).
* - MDBX_PANIC = If mdbx_env_close_ex() was called in the child process
* after fork(). In this case MDBX_PANIC is a expecte,
* i.e. MDBX_env instance was freed in proper manner.
* - MDBX_EIO = an error occurred during synchronization. */
LIBMDBX_API int mdbx_env_close_ex(MDBX_env *env, int dont_sync);
LIBMDBX_API int mdbx_env_close(MDBX_env *env);