Binary compatibility report for the userspace-rcu library between 0.7.14 and 0.8.0 versions on x86

Test Info

Library Name	userspace-rcu
Version #1	0.7.14
Version #2	0.8.0
CPU Type	x86
GCC Version	4.6.1

Test Results

Total Header Files	37
Total Shared Libraries	7
Total Symbols / Types	46 / 71
Verdict	Incompatible (18.5%)

Problem Summary

	Severity	Count
Added Symbols	-	72
Removed Symbols	High	6
Problems with Data Types	High	0
	Medium	2
	Low	2
Problems with Symbols	High	0
	Medium	0
	Low	0
Problems with Constants	Low	0
Other Changes in Constants	-	2

Added Symbols (72)

lfstack.h, liburcu-cds.so.2.0.0
__cds_lfs_pop ( struct cds_lfs_stack* s )
__cds_lfs_pop_all ( struct cds_lfs_stack* s )
cds_lfs_empty ( struct cds_lfs_stack* s )
cds_lfs_init ( struct cds_lfs_stack* s )
cds_lfs_node_init ( struct cds_lfs_node* node )
cds_lfs_pop_all_blocking ( struct cds_lfs_stack* s )
cds_lfs_pop_blocking ( struct cds_lfs_stack* s )
cds_lfs_pop_lock ( struct cds_lfs_stack* s )
cds_lfs_pop_unlock ( struct cds_lfs_stack* s )
cds_lfs_push ( struct cds_lfs_stack* s, struct cds_lfs_node* node )

urcu-call-rcu.h, liburcu.so.2.0.0
call_rcu_after_fork_child_memb ( )
call_rcu_after_fork_parent_memb ( )
call_rcu_before_fork_memb ( )
call_rcu_data_free_memb ( struct call_rcu_data* crdp )
call_rcu_memb ( struct rcu_head* head, void(*func)(struct rcu_head*) )
create_all_cpu_call_rcu_data_memb ( unsigned long flags )
create_call_rcu_data_memb ( unsigned long flags, int cpu_affinity )
free_all_cpu_call_rcu_data_memb ( )
get_call_rcu_data_memb ( )
get_call_rcu_thread_memb ( struct call_rcu_data* crdp )
get_cpu_call_rcu_data_memb ( int cpu )
get_default_call_rcu_data_memb ( )
get_thread_call_rcu_data_memb ( )
rcu_barrier_memb ( )
set_cpu_call_rcu_data_memb ( int cpu, struct call_rcu_data* crdp )
set_thread_call_rcu_data_memb ( struct call_rcu_data* crdp )

urcu-defer.h, liburcu.so.2.0.0
defer_rcu_memb ( void(*fct)(void*), void* p )
rcu_defer_barrier_memb ( )
rcu_defer_barrier_thread_memb ( )
rcu_defer_register_thread_memb ( )
rcu_defer_unregister_thread_memb ( )

urcu-flavor.h, liburcu.so.2.0.0
rcu_flavor_memb [data]

urcu.h, liburcu.so.2.0.0
rcu_gp_memb [data]
rcu_has_sys_membarrier_memb [data]
rcu_init_memb ( )
rcu_read_lock_memb ( )
rcu_read_ongoing_memb ( )
rcu_read_unlock_memb ( )
rcu_register_thread_memb ( )
rcu_unregister_thread_memb ( )
synchronize_rcu_memb ( )

wfcqueue.h, liburcu-common.so.2.0.0
__cds_wfcq_dequeue_blocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
__cds_wfcq_dequeue_nonblocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
__cds_wfcq_dequeue_with_state_blocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail, int* state )
__cds_wfcq_dequeue_with_state_nonblocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail, int* state )
__cds_wfcq_first_blocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
__cds_wfcq_first_nonblocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
__cds_wfcq_next_blocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail, struct cds_wfcq_node* node )
__cds_wfcq_next_nonblocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail, struct cds_wfcq_node* node )
__cds_wfcq_splice_blocking ( struct cds_wfcq_head* dest_q_head, struct cds_wfcq_tail* dest_q_tail, struct cds_wfcq_head* src_q_head, struct cds_wfcq_tail* src_q_tail )
__cds_wfcq_splice_nonblocking ( struct cds_wfcq_head* dest_q_head, struct cds_wfcq_tail* dest_q_tail, struct cds_wfcq_head* src_q_head, struct cds_wfcq_tail* src_q_tail )
cds_wfcq_dequeue_blocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
cds_wfcq_dequeue_lock ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
cds_wfcq_dequeue_unlock ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
cds_wfcq_dequeue_with_state_blocking ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail, int* state )
cds_wfcq_empty ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
cds_wfcq_enqueue ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail, struct cds_wfcq_node* node )
cds_wfcq_init ( struct cds_wfcq_head* head, struct cds_wfcq_tail* tail )
cds_wfcq_node_init ( struct cds_wfcq_node* node )
cds_wfcq_splice_blocking ( struct cds_wfcq_head* dest_q_head, struct cds_wfcq_tail* dest_q_tail, struct cds_wfcq_head* src_q_head, struct cds_wfcq_tail* src_q_tail )

wfstack.h, liburcu-common.so.2.0.0
__cds_wfs_pop_all ( struct cds_wfs_stack* s )
__cds_wfs_pop_nonblocking ( struct cds_wfs_stack* s )
__cds_wfs_pop_with_state_blocking ( struct cds_wfs_stack* s, int* state )
__cds_wfs_pop_with_state_nonblocking ( struct cds_wfs_stack* s, int* state )
cds_wfs_empty ( struct cds_wfs_stack* s )
cds_wfs_first ( struct cds_wfs_head* head )
cds_wfs_next_blocking ( struct cds_wfs_node* node )
cds_wfs_next_nonblocking ( struct cds_wfs_node* node )
cds_wfs_pop_all_blocking ( struct cds_wfs_stack* s )
cds_wfs_pop_lock ( struct cds_wfs_stack* s )
cds_wfs_pop_unlock ( struct cds_wfs_stack* s )
cds_wfs_pop_with_state_blocking ( struct cds_wfs_stack* s, int* state )

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Removed Symbols (6)

urcu-call-rcu.h, liburcu.so.1.0.0
call_rcu_after_fork_child ( )
call_rcu_after_fork_parent ( )
call_rcu_before_fork ( )
call_rcu_data_free ( struct call_rcu_data* crdp )

urcu.h, liburcu.so.1.0.0
gp_futex [data]
rcu_gp_ctr_mb [data]

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Problems with Data Types, Medium Severity (2)

	Change	Effect
1	Field read_ongoing has been added at the middle position of this structural type.	1) Size of the inclusive type has been changed. 2) Layout of structure fields has been changed and therefore fields at higher positions of the structure definition may be incorrectly accessed by applications.

	Change	Effect
1	Base type of field head has been changed from struct cds_wfs_node to struct cds_wfs_head of different format.	This field may be incorrectly initialized or accessed by applications.

urcu-flavor.h
[+] struct rcu_flavor_struct (1)

wfstack.h
[+] struct cds_wfs_stack (1)

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Problems with Data Types, Low Severity (2)

	Change	Effect
1	Field barrier has been added to this type.	1) This field will not be initialized by old clients. 2) Size of the inclusive type has been changed. NOTE: this field should be accessed only from the new library functions, otherwise it may result in crash or incorrect behavior of applications.
2	Size of this type has been changed from 40 bytes to 48 bytes.	The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

urcu-flavor.h
[+] struct rcu_flavor_struct (2)

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Other Changes in Constants (2)

	Change	Effect
1	The constant WFCQ_ADAPT_ATTEMPTS with value 10 has been added.	No effect.

	Change	Effect
1	The constant WFCQ_WAIT with value 10 has been added.	No effect.

wfcqueue.h
[+] WFCQ_ADAPT_ATTEMPTS
[+] WFCQ_WAIT

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Header Files (37)

arch.h
generic.h (arch/generic.h)
bkp-wfqueue.h
cds.h
compiler.h
config.h
futex.h
hlist.h
list.h
rcuhlist.h
rculfhash.h
rculfqueue.h
rculfstack.h
rculist.h
ref.h
rculfqueue.h (static/rculfqueue.h)
rculfstack.h (static/rculfstack.h)
wfqueue.h (static/wfqueue.h)
wfstack.h (static/wfstack.h)
system.h
tls-compat.h
uatomic.h
generic.h (uatomic/generic.h)
uatomic_arch.h
urcu-call-rcu.h
urcu-defer.h
urcu-flavor.h
urcu-futex.h
urcu-mp.h
urcu-pointer.h
urcu.h
urcu.h (urcu/map/urcu.h)
urcu-pointer.h (urcu/static/urcu-pointer.h)
urcu.h (urcu/static/urcu.h)
urcu_ref.h
wfqueue.h
wfstack.h

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Shared Libraries (7)

liburcu-bp.so.1.0.0
liburcu-cds.so.1.0.0
liburcu-common.so.1.0.0
liburcu-mb.so.1.0.0
liburcu-qsbr.so.1.0.0
liburcu-signal.so.1.0.0
liburcu.so.1.0.0

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