From 21ed2bd4c939ac9516d14933eeb3130990df7cde Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Thu, 2 Jun 2016 21:01:27 +0100 Subject: [PATCH] ITS#8339 Solaris 10/11 robust mutex fixes Check for PTHREAD_MUTEX_ROBUST_NP definition (this doesn't work on Linux/glibc because they used an enum). Zero out mutex before initing. --- libraries/liblmdb/mdb.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index 169f9d7be7..0bdfef547c 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -257,7 +257,8 @@ typedef SSIZE_T ssize_t; # else # define MDB_USE_ROBUST 1 /* glibc < 2.12 only provided _np API */ -# if defined(__GLIBC__) && GLIBC_VER < 0x02000c +# if (defined(__GLIBC__) && GLIBC_VER < 0x02000c) || \ + (defined(PTHREAD_MUTEX_ROBUST_NP) && !defined(PTHREAD_MUTEX_ROBUST)) # define PTHREAD_MUTEX_ROBUST PTHREAD_MUTEX_ROBUST_NP # define pthread_mutexattr_setrobust(attr, flag) pthread_mutexattr_setrobust_np(attr, flag) # define pthread_mutex_consistent(mutex) pthread_mutex_consistent_np(mutex) @@ -4620,6 +4621,13 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl) #else /* MDB_USE_POSIX_MUTEX: */ pthread_mutexattr_t mattr; + /* Solaris needs this before initing a robust mutex. Otherwise + * it may skip the init and return EBUSY "seems someone already + * inited" or EINVAL "it was inited differently". + */ + memset(env->me_txns->mti_rmutex, 0, sizeof(*env->me_txns->mti_rmutex)); + memset(env->me_txns->mti_wmutex, 0, sizeof(*env->me_txns->mti_wmutex)); + if ((rc = pthread_mutexattr_init(&mattr)) || (rc = pthread_mutexattr_setpshared(&mattr, PTHREAD_PROCESS_SHARED)) #ifdef MDB_ROBUST_SUPPORTED -- 2.39.5