The commit 20e498bd removes the pthread_mutex_rdlock() calls, but not the
corresponding pthread_mutex_unlock() calls. Also, the database lock is never
unlocked in one branch of the mempool_alloc() if.
I think unreproducible random assert(dh->usable) crashes in prune_cache() were
caused by this. But an easy way to make nscd threads hang with the broken
locking was.
2009-02-13 Ulrich Drepper <drepper@redhat.com>
[BZ #5381]
* nscd/nscd.h: Remove definitions and declarations for mem_in_flight.
Change mempool_alloc prototype.
* nscd/mem.c (gc): Don't handle mem_in_flight.
(mempool_alloc): Third parameter now only indicates whether this is the
first call (to allocate data) or not. If it is, get db rdlock.
Release it on error. Don't handle mem_in_flight.
* nscd/aicache.c (addhstaiX): Mark he parameter as const.
Adjust third parameter of mempool_alloc calls.
Nothing to do here in case mempool_alloc fails.
Avoid local variable shadowing parameter. No need to get db rdlock
before calling cache_add.
* nscd/cache.c (cache_add): Adjust call to mempool_alloc. There is
no mem_in_flight array anymore.
* nscd/connections.c: Remove definition and handling of mem_in_flight.
* nscd/grpcache.c (cache_addgr): Adjust third parameter of
mempool_alloc calls. Mark he parameter as const. Nothing to do here
in case mempool_alloc fails. No need to get db rdlock before calling
cache_add.
* nscd/hstcache.c (cache_addhst): Likewise.
* nscd/initgrcache.c (addinitgroupsX): Likewise.
* nscd/servicescache.c (cache_addserv): Likewise.
* nscd/pwdcache.c (cache_addpw): Likewise. Remove some debugging code.
* nscd/mem.c (gc): Use alloca_count to get the real stack usage.
* include/alloca.h (alloca_account): Define.
* sysdeps/x86_64/stackinfo.h (stackinfo_get_sp): Define.
(stackinfo_sub_sp): Define.
2009-01-28 Ulrich Drepper <drepper@redhat.com>
[BZ #9741]
* nscd/mem.c (gc): Fix assignment of he_data in case malloc is used.
Reported by Jun'ichi Nomura <j-nomura@ce.jp.nec.com>.
2008-04-15 Ulrich Drepper <drepper@redhat.com>
[BZ #5209]
* sysdeps/unix/sysv/linux/times.c: New file.
[BZ #5381]
* nscd/nscd.h: Define enum in_flight, mem_in_flight, and
mem_in_flight_list variables. Add new parameter to mempool_alloc
prototype.
* nscd/mem.c (mempool_alloc): Take additional parameter. Initialize
appropriate mem_in_flight element.
(gc): Take allocations which have not yet been committed to the
database into account.
* nscd/cache.c (cache_add): Add new parameter to mempool_alloc call.
Reset mem_in_flight before returning.
* nscd/connections.c (nscd_run_worker): Initialize mem_in_flight and
cue it up in mem_in_flight_list.
* nscd/aicache.c: Adjust mempool_alloc call.
* nscd/grpcache.c: Likewise.
* nscd/hstcache.c: Likewise.
* nscd/initgrcache.c: Likewise.
* nscd/pwdcache.c: Likewise.
* nscd/servicescache.c: Likewise.
* nscd/Makefile (nscd-flags): Until ld is fixed, use -fpic instead
of -fpie.
* nscd/connections.c (handle_request): Provide better error message
in case SELinux forbids the service.
* version.h (VERSION): Bump to 2.8.90.
* nscd/mem.c (MAX_STACK_USE): Remove definition here.
(gc): Initialize stack_used based on allocation in prune_cache.
* nscd/cache.c (prune_cache): Use heap for mark array if necessary.
Clear array bfore use.
* nscd/aicache.c (addhstaiX): Update statistics counter in case
memory allocate failed.
* nscd/nscd.h (NSCD_THREAD_STACKSIZE): Define.
* nscd/connections.c (start_threads): Use NSCD_THREAD_STACKSIZE.
* nscd/mem.c (gc): Don't allocate arrays on stack if it can
overflow it.
* sysdeps/unix/sysv/linux/nscd_setup_thread.c (setup_thread):
Return zero in case thread library is not NPTL.
in oldtotal and newtotal calculation.
* nscd/nscd-client.h (struct mapped_database): Add datasize
field.
* nscd/nscd_helper.c (get_mapping): Initialize datasize field.
(__nscd_get_map_ref): Get a new mapping even if mapping's data_size
increased.
(__nscd_cache_search): Add checks to make sure we never reference
data beyond the current mapping.
(dbs): Initialize max_db_size fields.
(nscd_init): When mapping the database, use max_db_size as the
mapping size even if it is bigger than the file size.
* nscd/mem.c (mempool_alloc): When resizing the file make sure the
limit in max_db_size is not exceeded. Don't use mremap, just
posix_fallocate is enough (according to Linus). Use posix_fallocate
correctly.
* nscd/nscd.conf: Add max-db-size parameters.
* nscd/nscd.h (struct database_dyn): Add max_db_size field.
Define DEFAULT_MAX_DB_SIZE and DEFAULT_DATASIZE_PER_BUCKET.
Temporarily define TEMP_FAILURE_RETRY_VAL here.
* nscd/nscd_conf.c (nscd_parse_file): Parse max-db-size parameter
and add sanity checks for it.
* nscd/aicache.c (addhstaiX): Use send with MSG_NOSIGNAL not write to
send reply.
* nscd/connection.c (writeall): Likewise.
(handle_request): Likewise.
* nscd/grpcache.c (cache_addgr): Likewise.
* nscd/hstcache.c (cache_addhst): Likewise.
* nscd/initgrcache.c (addinitgroupsX): Likewise.
* nscd/nscd.c (parse_opt): Likewise.
* nscd/nscd_stat.c (send_stats): Likewise.
(receive_print_stats): Likewise.
* nscd/pwdcache.c (cache_addpw): Likewise.
* nscd/connections.c: Implement r/o sharing of nscd's cache with client
processes via shared memory.
* nscd/nscd-client.h: Likewise.
* nscd/nscd.h: Likewise.
* nscd/nscd_conf.c: Likewise.
* nscd/nscd_getgr_r.c: Likewise.
* nscd/nscd_getpw_r.c: Likewise.
* nscd/nscd_gethst_r.c: Likewise.
* nscd/nscd.conf: Add new config parameters.
* nscd/Makefile (aux): Add nscd_helper.
* nscd/nscd_helper.c: New file.
* nscd/mem.c (gc): Indicate beginning and end of the gc cycle.
* nscd/hstcache.c: Simplify a lot. We cache only the request itself,
no derived information.
* connections.c (nscd_init): Fix bug in testing size of the persistent.
* nis/Makefile (aux): Add nis_hash.
* nis/nis_hash.c: New file. Split out from nis_util.c.
* nis/nis_util.c: Move __nis_hash code in separate file.
* csu/tst-atomic.c: Improve atomic_increment_val test which would
not have found a ppc bug.
2004-08-26 Ulrich Drepper <drepper@redhat.com>
* nscd/cache.c: Major rewrite. The data is now optionally kept in
a mmaped memory region which is automatically mirrored on disk.
This implements persistent data storage. The Memory handled
needed to be completely revamped, it now uses a garbage collection
mechanism instead of malloc.
* nscd/connections.c: Likewise.
* nscd/nscd.c: Likewise.
* nscd/nscd.h: Likewise.
* nscd/nscd_conf.c: Likewise.
* nscd/nscd_stat.c: Likewise.
* nscd/grpcache.c: Likewise.
* nscd/hstcache.c:: Likewise.
* nscd/pwdcache.c:: Likewise.
* nscd/Makefile: Add rules to build mem.c.
* nscd/mem.c: New file.
* nscd/nscd.conf: Describe new configuration options.
Joseph Myers