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ITS#8582 keep mutex at end of struct 

since it's variable size on Linux/glibc
This commit is contained in:
Howard Chu 2017-02-07 15:12:05 +00:00
parent 3473af00ad
commit 27c3a0ea9f
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1 changed files with 10 additions and 10 deletions
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20
external/db_drivers/liblmdb/mdb.c vendored
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@ -809,6 +809,16 @@ typedef struct MDB_txbody {
uint32_t mtb_magic;
/** Format of this lock file. Must be set to #MDB_LOCK_FORMAT. */
uint32_t mtb_format;
/** The ID of the last transaction committed to the database.
* This is recorded here only for convenience; the value can always
* be determined by reading the main database meta pages.
*/
volatile txnid_t mtb_txnid;
/** The number of slots that have been used in the reader table.
* This always records the maximum count, it is not decremented
* when readers release their slots.
*/
volatile unsigned mtb_numreaders;
#if defined(_WIN32) || defined(MDB_USE_POSIX_SEM)
char mtb_rmname[MNAME_LEN];
#elif defined(MDB_USE_SYSV_SEM)
@ -820,16 +830,6 @@ typedef struct MDB_txbody {
*/
mdb_mutex_t mtb_rmutex;
#endif
/** The ID of the last transaction committed to the database.
* This is recorded here only for convenience; the value can always
* be determined by reading the main database meta pages.
*/
volatile txnid_t mtb_txnid;
/** The number of slots that have been used in the reader table.
* This always records the maximum count, it is not decremented
* when readers release their slots.
*/
volatile unsigned mtb_numreaders;
} MDB_txbody;
/** The actual reader table definition. */