Before this patch evbuffer always reads 4K at a time, while this is fine
most of time you can find an example when this will decrease throughput.
So add an API to change default limit:
- evbuffer_set_max_read()
- evbuffer_get_max_read()
And a notice that most of time default is sane.
For this fix, we need to make sure that passing too-large inputs to
the evbuffer functions can't make us do bad things with the heap.
Also, lower the maximum chunk size to the lower of off_t, size_t maximum.
This is necessary since otherwise we could get into an infinite loop
if we make a chunk that 'misalign' cannot index into.
Since the bufferevents' events are now EV_FINALIZE (name pending),
they won't deadlock. To clean up properly, though, we must use the
finalization feature.
This patch also split bufferevent deallocation into an "unlink" step
that happens fast, and a "destruct" step that happens after
finalization.
More work is needed: there needs to be a way to specify a finalizer
for the bufferevent's argument itself. Also, this finalizer business
makes lots of the reference counting we were doing unnecessary.
Also, more testing is needed.
We haven't had a convention for naming internal functions in -internal.h
versus naming visible functions in include/**.h. This patch changes every
function declared in a -internal.h file to be named ending with an
underscore.
Static function names are unaffected, since there's no risk of calling them
from outside Libevent.
This is an automatic conversion. The script that produced was made by
running the following script over the output of
ctags --c-kinds=pf -o - *-internal.h | cut -f 1 | sort| uniq
(GNU ctags was required.)
=====
#!/usr/bin/perl -w -n
use strict;
BEGIN { print "#!/usr/bin/perl -w -i -p\n\n"; }
chomp;
my $ident = $_;
next if ($ident =~ /_$/);
next if ($ident =~ /^TAILQ/);
my $better = "${ident}_";
print "s/(?<![A-Za-z0-9_])$ident(?![A-Za-z0-9_])/$better/g;\n";
=== And then running the script below that it generated over all
=== the .c and .h files again
#!/usr/bin/perl -w -i -p
s/(?<![A-Za-z0-9_])bufferevent_async_can_connect(?![A-Za-z0-9_])/bufferevent_async_can_connect_/g;
s/(?<![A-Za-z0-9_])bufferevent_async_connect(?![A-Za-z0-9_])/bufferevent_async_connect_/g;
s/(?<![A-Za-z0-9_])bufferevent_async_new(?![A-Za-z0-9_])/bufferevent_async_new_/g;
s/(?<![A-Za-z0-9_])bufferevent_async_set_connected(?![A-Za-z0-9_])/bufferevent_async_set_connected_/g;
s/(?<![A-Za-z0-9_])bufferevent_decref(?![A-Za-z0-9_])/bufferevent_decref_/g;
s/(?<![A-Za-z0-9_])bufferevent_disable_hard(?![A-Za-z0-9_])/bufferevent_disable_hard_/g;
s/(?<![A-Za-z0-9_])bufferevent_enable_locking(?![A-Za-z0-9_])/bufferevent_enable_locking_/g;
s/(?<![A-Za-z0-9_])bufferevent_incref(?![A-Za-z0-9_])/bufferevent_incref_/g;
s/(?<![A-Za-z0-9_])bufferevent_init_common(?![A-Za-z0-9_])/bufferevent_init_common_/g;
s/(?<![A-Za-z0-9_])bufferevent_remove_from_rate_limit_group_internal(?![A-Za-z0-9_])/bufferevent_remove_from_rate_limit_group_internal_/g;
s/(?<![A-Za-z0-9_])bufferevent_suspend_read(?![A-Za-z0-9_])/bufferevent_suspend_read_/g;
s/(?<![A-Za-z0-9_])bufferevent_suspend_write(?![A-Za-z0-9_])/bufferevent_suspend_write_/g;
s/(?<![A-Za-z0-9_])bufferevent_unsuspend_read(?![A-Za-z0-9_])/bufferevent_unsuspend_read_/g;
s/(?<![A-Za-z0-9_])bufferevent_unsuspend_write(?![A-Za-z0-9_])/bufferevent_unsuspend_write_/g;
s/(?<![A-Za-z0-9_])evbuffer_commit_read(?![A-Za-z0-9_])/evbuffer_commit_read_/g;
s/(?<![A-Za-z0-9_])evbuffer_commit_write(?![A-Za-z0-9_])/evbuffer_commit_write_/g;
s/(?<![A-Za-z0-9_])evbuffer_invoke_callbacks(?![A-Za-z0-9_])/evbuffer_invoke_callbacks_/g;
s/(?<![A-Za-z0-9_])evbuffer_launch_read(?![A-Za-z0-9_])/evbuffer_launch_read_/g;
s/(?<![A-Za-z0-9_])evbuffer_launch_write(?![A-Za-z0-9_])/evbuffer_launch_write_/g;
s/(?<![A-Za-z0-9_])evbuffer_overlapped_new(?![A-Za-z0-9_])/evbuffer_overlapped_new_/g;
s/(?<![A-Za-z0-9_])evbuffer_set_parent(?![A-Za-z0-9_])/evbuffer_set_parent_/g;
s/(?<![A-Za-z0-9_])event_active_nolock(?![A-Za-z0-9_])/event_active_nolock_/g;
s/(?<![A-Za-z0-9_])event_base_add_virtual(?![A-Za-z0-9_])/event_base_add_virtual_/g;
s/(?<![A-Za-z0-9_])event_base_assert_ok(?![A-Za-z0-9_])/event_base_assert_ok_/g;
s/(?<![A-Za-z0-9_])event_base_del_virtual(?![A-Za-z0-9_])/event_base_del_virtual_/g;
s/(?<![A-Za-z0-9_])event_base_get_deferred_cb_queue(?![A-Za-z0-9_])/event_base_get_deferred_cb_queue_/g;
s/(?<![A-Za-z0-9_])event_base_get_iocp(?![A-Za-z0-9_])/event_base_get_iocp_/g;
s/(?<![A-Za-z0-9_])event_base_start_iocp(?![A-Za-z0-9_])/event_base_start_iocp_/g;
s/(?<![A-Za-z0-9_])event_base_stop_iocp(?![A-Za-z0-9_])/event_base_stop_iocp_/g;
s/(?<![A-Za-z0-9_])event_changelist_add(?![A-Za-z0-9_])/event_changelist_add_/g;
s/(?<![A-Za-z0-9_])event_changelist_del(?![A-Za-z0-9_])/event_changelist_del_/g;
s/(?<![A-Za-z0-9_])event_changelist_freemem(?![A-Za-z0-9_])/event_changelist_freemem_/g;
s/(?<![A-Za-z0-9_])event_changelist_init(?![A-Za-z0-9_])/event_changelist_init_/g;
s/(?<![A-Za-z0-9_])event_changelist_remove_all(?![A-Za-z0-9_])/event_changelist_remove_all_/g;
s/(?<![A-Za-z0-9_])event_deferred_cb_cancel(?![A-Za-z0-9_])/event_deferred_cb_cancel_/g;
s/(?<![A-Za-z0-9_])event_deferred_cb_init(?![A-Za-z0-9_])/event_deferred_cb_init_/g;
s/(?<![A-Za-z0-9_])event_deferred_cb_queue_init(?![A-Za-z0-9_])/event_deferred_cb_queue_init_/g;
s/(?<![A-Za-z0-9_])event_deferred_cb_schedule(?![A-Za-z0-9_])/event_deferred_cb_schedule_/g;
s/(?<![A-Za-z0-9_])event_get_win32_extension_fns(?![A-Za-z0-9_])/event_get_win32_extension_fns_/g;
s/(?<![A-Za-z0-9_])event_iocp_activate_overlapped(?![A-Za-z0-9_])/event_iocp_activate_overlapped_/g;
s/(?<![A-Za-z0-9_])event_iocp_port_associate(?![A-Za-z0-9_])/event_iocp_port_associate_/g;
s/(?<![A-Za-z0-9_])event_iocp_port_launch(?![A-Za-z0-9_])/event_iocp_port_launch_/g;
s/(?<![A-Za-z0-9_])event_iocp_shutdown(?![A-Za-z0-9_])/event_iocp_shutdown_/g;
s/(?<![A-Za-z0-9_])event_overlapped_init(?![A-Za-z0-9_])/event_overlapped_init_/g;
s/(?<![A-Za-z0-9_])evhttp_connection_connect(?![A-Za-z0-9_])/evhttp_connection_connect_/g;
s/(?<![A-Za-z0-9_])evhttp_connection_fail(?![A-Za-z0-9_])/evhttp_connection_fail_/g;
s/(?<![A-Za-z0-9_])evhttp_connection_reset(?![A-Za-z0-9_])/evhttp_connection_reset_/g;
s/(?<![A-Za-z0-9_])evhttp_parse_firstline(?![A-Za-z0-9_])/evhttp_parse_firstline_/g;
s/(?<![A-Za-z0-9_])evhttp_parse_headers(?![A-Za-z0-9_])/evhttp_parse_headers_/g;
s/(?<![A-Za-z0-9_])evhttp_response_code(?![A-Za-z0-9_])/evhttp_response_code_/g;
s/(?<![A-Za-z0-9_])evhttp_send_page(?![A-Za-z0-9_])/evhttp_send_page_/g;
s/(?<![A-Za-z0-9_])evhttp_start_read(?![A-Za-z0-9_])/evhttp_start_read_/g;
s/(?<![A-Za-z0-9_])EVLOCK_TRY_LOCK(?![A-Za-z0-9_])/EVLOCK_TRY_LOCK_/g;
s/(?<![A-Za-z0-9_])evmap_check_integrity(?![A-Za-z0-9_])/evmap_check_integrity_/g;
s/(?<![A-Za-z0-9_])evmap_delete_all(?![A-Za-z0-9_])/evmap_delete_all_/g;
s/(?<![A-Za-z0-9_])evmap_foreach_event(?![A-Za-z0-9_])/evmap_foreach_event_/g;
s/(?<![A-Za-z0-9_])evmap_io_active(?![A-Za-z0-9_])/evmap_io_active_/g;
s/(?<![A-Za-z0-9_])evmap_io_add(?![A-Za-z0-9_])/evmap_io_add_/g;
s/(?<![A-Za-z0-9_])evmap_io_clear(?![A-Za-z0-9_])/evmap_io_clear_/g;
s/(?<![A-Za-z0-9_])evmap_io_del(?![A-Za-z0-9_])/evmap_io_del_/g;
s/(?<![A-Za-z0-9_])evmap_io_get_fdinfo(?![A-Za-z0-9_])/evmap_io_get_fdinfo_/g;
s/(?<![A-Za-z0-9_])evmap_io_initmap(?![A-Za-z0-9_])/evmap_io_initmap_/g;
s/(?<![A-Za-z0-9_])evmap_reinit(?![A-Za-z0-9_])/evmap_reinit_/g;
s/(?<![A-Za-z0-9_])evmap_signal_active(?![A-Za-z0-9_])/evmap_signal_active_/g;
s/(?<![A-Za-z0-9_])evmap_signal_add(?![A-Za-z0-9_])/evmap_signal_add_/g;
s/(?<![A-Za-z0-9_])evmap_signal_clear(?![A-Za-z0-9_])/evmap_signal_clear_/g;
s/(?<![A-Za-z0-9_])evmap_signal_del(?![A-Za-z0-9_])/evmap_signal_del_/g;
s/(?<![A-Za-z0-9_])evmap_signal_initmap(?![A-Za-z0-9_])/evmap_signal_initmap_/g;
s/(?<![A-Za-z0-9_])evrpc_hook_associate_meta(?![A-Za-z0-9_])/evrpc_hook_associate_meta_/g;
s/(?<![A-Za-z0-9_])evrpc_hook_context_free(?![A-Za-z0-9_])/evrpc_hook_context_free_/g;
s/(?<![A-Za-z0-9_])evrpc_hook_meta_new(?![A-Za-z0-9_])/evrpc_hook_meta_new_/g;
s/(?<![A-Za-z0-9_])evrpc_reqstate_free(?![A-Za-z0-9_])/evrpc_reqstate_free_/g;
s/(?<![A-Za-z0-9_])evsig_dealloc(?![A-Za-z0-9_])/evsig_dealloc_/g;
s/(?<![A-Za-z0-9_])evsig_init(?![A-Za-z0-9_])/evsig_init_/g;
s/(?<![A-Za-z0-9_])evsig_set_base(?![A-Za-z0-9_])/evsig_set_base_/g;
s/(?<![A-Za-z0-9_])ev_token_bucket_get_tick(?![A-Za-z0-9_])/ev_token_bucket_get_tick_/g;
s/(?<![A-Za-z0-9_])ev_token_bucket_init(?![A-Za-z0-9_])/ev_token_bucket_init_/g;
s/(?<![A-Za-z0-9_])ev_token_bucket_update(?![A-Za-z0-9_])/ev_token_bucket_update_/g;
s/(?<![A-Za-z0-9_])evutil_accept4(?![A-Za-z0-9_])/evutil_accept4_/g;
s/(?<![A-Za-z0-9_])evutil_addrinfo_append(?![A-Za-z0-9_])/evutil_addrinfo_append_/g;
s/(?<![A-Za-z0-9_])evutil_adjust_hints_for_addrconfig(?![A-Za-z0-9_])/evutil_adjust_hints_for_addrconfig_/g;
s/(?<![A-Za-z0-9_])evutil_ersatz_socketpair(?![A-Za-z0-9_])/evutil_ersatz_socketpair_/g;
s/(?<![A-Za-z0-9_])evutil_eventfd(?![A-Za-z0-9_])/evutil_eventfd_/g;
s/(?<![A-Za-z0-9_])evutil_format_sockaddr_port(?![A-Za-z0-9_])/evutil_format_sockaddr_port_/g;
s/(?<![A-Za-z0-9_])evutil_getaddrinfo_async(?![A-Za-z0-9_])/evutil_getaddrinfo_async_/g;
s/(?<![A-Za-z0-9_])evutil_getaddrinfo_common(?![A-Za-z0-9_])/evutil_getaddrinfo_common_/g;
s/(?<![A-Za-z0-9_])evutil_getenv(?![A-Za-z0-9_])/evutil_getenv_/g;
s/(?<![A-Za-z0-9_])evutil_hex_char_to_int(?![A-Za-z0-9_])/evutil_hex_char_to_int_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISALNUM(?![A-Za-z0-9_])/EVUTIL_ISALNUM_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISALPHA(?![A-Za-z0-9_])/EVUTIL_ISALPHA_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISDIGIT(?![A-Za-z0-9_])/EVUTIL_ISDIGIT_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISLOWER(?![A-Za-z0-9_])/EVUTIL_ISLOWER_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISPRINT(?![A-Za-z0-9_])/EVUTIL_ISPRINT_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISSPACE(?![A-Za-z0-9_])/EVUTIL_ISSPACE_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISUPPER(?![A-Za-z0-9_])/EVUTIL_ISUPPER_/g;
s/(?<![A-Za-z0-9_])EVUTIL_ISXDIGIT(?![A-Za-z0-9_])/EVUTIL_ISXDIGIT_/g;
s/(?<![A-Za-z0-9_])evutil_load_windows_system_library(?![A-Za-z0-9_])/evutil_load_windows_system_library_/g;
s/(?<![A-Za-z0-9_])evutil_make_internal_pipe(?![A-Za-z0-9_])/evutil_make_internal_pipe_/g;
s/(?<![A-Za-z0-9_])evutil_new_addrinfo(?![A-Za-z0-9_])/evutil_new_addrinfo_/g;
s/(?<![A-Za-z0-9_])evutil_open_closeonexec(?![A-Za-z0-9_])/evutil_open_closeonexec_/g;
s/(?<![A-Za-z0-9_])evutil_read_file(?![A-Za-z0-9_])/evutil_read_file_/g;
s/(?<![A-Za-z0-9_])evutil_resolve(?![A-Za-z0-9_])/evutil_resolve_/g;
s/(?<![A-Za-z0-9_])evutil_set_evdns_getaddrinfo_fn(?![A-Za-z0-9_])/evutil_set_evdns_getaddrinfo_fn_/g;
s/(?<![A-Za-z0-9_])evutil_sockaddr_is_loopback(?![A-Za-z0-9_])/evutil_sockaddr_is_loopback_/g;
s/(?<![A-Za-z0-9_])evutil_socket(?![A-Za-z0-9_])/evutil_socket_/g;
s/(?<![A-Za-z0-9_])evutil_socket_connect(?![A-Za-z0-9_])/evutil_socket_connect_/g;
s/(?<![A-Za-z0-9_])evutil_socket_finished_connecting(?![A-Za-z0-9_])/evutil_socket_finished_connecting_/g;
s/(?<![A-Za-z0-9_])EVUTIL_TOLOWER(?![A-Za-z0-9_])/EVUTIL_TOLOWER_/g;
s/(?<![A-Za-z0-9_])EVUTIL_TOUPPER(?![A-Za-z0-9_])/EVUTIL_TOUPPER_/g;
s/(?<![A-Za-z0-9_])evutil_tv_to_msec(?![A-Za-z0-9_])/evutil_tv_to_msec_/g;
s/(?<![A-Za-z0-9_])evutil_usleep(?![A-Za-z0-9_])/evutil_usleep_/g;
s/(?<![A-Za-z0-9_])ht_improve_hash(?![A-Za-z0-9_])/ht_improve_hash_/g;
s/(?<![A-Za-z0-9_])ht_string_hash(?![A-Za-z0-9_])/ht_string_hash_/g;
s/(?<![A-Za-z0-9_])min_heap_adjust(?![A-Za-z0-9_])/min_heap_adjust_/g;
s/(?<![A-Za-z0-9_])min_heap_ctor(?![A-Za-z0-9_])/min_heap_ctor_/g;
s/(?<![A-Za-z0-9_])min_heap_dtor(?![A-Za-z0-9_])/min_heap_dtor_/g;
s/(?<![A-Za-z0-9_])min_heap_elem_init(?![A-Za-z0-9_])/min_heap_elem_init_/g;
s/(?<![A-Za-z0-9_])min_heap_elt_is_top(?![A-Za-z0-9_])/min_heap_elt_is_top_/g;
s/(?<![A-Za-z0-9_])min_heap_empty(?![A-Za-z0-9_])/min_heap_empty_/g;
s/(?<![A-Za-z0-9_])min_heap_erase(?![A-Za-z0-9_])/min_heap_erase_/g;
s/(?<![A-Za-z0-9_])min_heap_pop(?![A-Za-z0-9_])/min_heap_pop_/g;
s/(?<![A-Za-z0-9_])min_heap_push(?![A-Za-z0-9_])/min_heap_push_/g;
s/(?<![A-Za-z0-9_])min_heap_reserve(?![A-Za-z0-9_])/min_heap_reserve_/g;
s/(?<![A-Za-z0-9_])min_heap_size(?![A-Za-z0-9_])/min_heap_size_/g;
s/(?<![A-Za-z0-9_])min_heap_top(?![A-Za-z0-9_])/min_heap_top_/g;
These are reserved in C. We'd been erroneously using them to indicate
internal use.
Instead, we now use a trailing underscore whenever we'd been using a leading
underscore.
This is an automatic conversion. The script that produced was made by
running the following script over the output of
git ls-tree -r --name-only HEAD | grep '\.[ch]$' | \
xargs ctags --c-kinds=defglmpstuvx -o - | grep '^_' | \
cut -f 1 | sort| uniq
(GNU ctags was required.)
=====
#!/usr/bin/perl -w -n
use strict;
BEGIN { print "#!/usr/bin/perl -w -i -p\n\n"; }
chomp;
next if (/^__func__/ or
/^_FILE_OFFSET_BITS/ or
/^_FORTIFY_SOURCE/ or
/^_GNU_SOURCE/ or
/^_WIN32/ or
/^_DARWIN_UNLIMITED/ or
/^_FILE_OFFSET_BITS/ or
/^_LARGEFILE64_SOURCE/ or
/^_LFS64_LARGEFILE/ or
/^__cdecl/ or
/^__attribute__/ or
/^__func__/ or
/^_SYS_TREE_H_/);
my $ident = $_;
my $better = $ident;
$better =~ s/^_//;
if ($ident !~ /EVENT_LOG_/) {
$better = "${better}_";
}
print "s/(?<![A-Za-z0-9_])$ident(?![A-Za-z0-9_])/$better/g;\n";
=== And then running the script below that it generated over all
=== the .c and .h files again
#!/usr/bin/perl -w -i -p
s/(?<![A-Za-z0-9_])_ARC4_LOCK(?![A-Za-z0-9_])/ARC4_LOCK_/g;
s/(?<![A-Za-z0-9_])_ARC4_UNLOCK(?![A-Za-z0-9_])/ARC4_UNLOCK_/g;
s/(?<![A-Za-z0-9_])_bev_group_random_element(?![A-Za-z0-9_])/bev_group_random_element_/g;
s/(?<![A-Za-z0-9_])_bev_group_refill_callback(?![A-Za-z0-9_])/bev_group_refill_callback_/g;
s/(?<![A-Za-z0-9_])_bev_group_suspend_reading(?![A-Za-z0-9_])/bev_group_suspend_reading_/g;
s/(?<![A-Za-z0-9_])_bev_group_suspend_writing(?![A-Za-z0-9_])/bev_group_suspend_writing_/g;
s/(?<![A-Za-z0-9_])_bev_group_unsuspend_reading(?![A-Za-z0-9_])/bev_group_unsuspend_reading_/g;
s/(?<![A-Za-z0-9_])_bev_group_unsuspend_writing(?![A-Za-z0-9_])/bev_group_unsuspend_writing_/g;
s/(?<![A-Za-z0-9_])_bev_refill_callback(?![A-Za-z0-9_])/bev_refill_callback_/g;
s/(?<![A-Za-z0-9_])_bufferevent_add_event(?![A-Za-z0-9_])/bufferevent_add_event_/g;
s/(?<![A-Za-z0-9_])_bufferevent_cancel_all(?![A-Za-z0-9_])/bufferevent_cancel_all_/g;
s/(?<![A-Za-z0-9_])_bufferevent_decref_and_unlock(?![A-Za-z0-9_])/bufferevent_decref_and_unlock_/g;
s/(?<![A-Za-z0-9_])_bufferevent_decrement_read_buckets(?![A-Za-z0-9_])/bufferevent_decrement_read_buckets_/g;
s/(?<![A-Za-z0-9_])_bufferevent_decrement_write_buckets(?![A-Za-z0-9_])/bufferevent_decrement_write_buckets_/g;
s/(?<![A-Za-z0-9_])_bufferevent_del_generic_timeout_cbs(?![A-Za-z0-9_])/bufferevent_del_generic_timeout_cbs_/g;
s/(?<![A-Za-z0-9_])_bufferevent_generic_adj_timeouts(?![A-Za-z0-9_])/bufferevent_generic_adj_timeouts_/g;
s/(?<![A-Za-z0-9_])_bufferevent_get_read_max(?![A-Za-z0-9_])/bufferevent_get_read_max_/g;
s/(?<![A-Za-z0-9_])_bufferevent_get_rlim_max(?![A-Za-z0-9_])/bufferevent_get_rlim_max_/g;
s/(?<![A-Za-z0-9_])_bufferevent_get_write_max(?![A-Za-z0-9_])/bufferevent_get_write_max_/g;
s/(?<![A-Za-z0-9_])_bufferevent_incref_and_lock(?![A-Za-z0-9_])/bufferevent_incref_and_lock_/g;
s/(?<![A-Za-z0-9_])_bufferevent_init_generic_timeout_cbs(?![A-Za-z0-9_])/bufferevent_init_generic_timeout_cbs_/g;
s/(?<![A-Za-z0-9_])_bufferevent_ratelim_init(?![A-Za-z0-9_])/bufferevent_ratelim_init_/g;
s/(?<![A-Za-z0-9_])_bufferevent_run_eventcb(?![A-Za-z0-9_])/bufferevent_run_eventcb_/g;
s/(?<![A-Za-z0-9_])_bufferevent_run_readcb(?![A-Za-z0-9_])/bufferevent_run_readcb_/g;
s/(?<![A-Za-z0-9_])_bufferevent_run_writecb(?![A-Za-z0-9_])/bufferevent_run_writecb_/g;
s/(?<![A-Za-z0-9_])_ev(?![A-Za-z0-9_])/ev_/g;
s/(?<![A-Za-z0-9_])_evbuffer_chain_pin(?![A-Za-z0-9_])/evbuffer_chain_pin_/g;
s/(?<![A-Za-z0-9_])_evbuffer_chain_unpin(?![A-Za-z0-9_])/evbuffer_chain_unpin_/g;
s/(?<![A-Za-z0-9_])_evbuffer_decref_and_unlock(?![A-Za-z0-9_])/evbuffer_decref_and_unlock_/g;
s/(?<![A-Za-z0-9_])_evbuffer_expand_fast(?![A-Za-z0-9_])/evbuffer_expand_fast_/g;
s/(?<![A-Za-z0-9_])_evbuffer_incref(?![A-Za-z0-9_])/evbuffer_incref_/g;
s/(?<![A-Za-z0-9_])_evbuffer_incref_and_lock(?![A-Za-z0-9_])/evbuffer_incref_and_lock_/g;
s/(?<![A-Za-z0-9_])_EVBUFFER_IOVEC_IS_NATIVE(?![A-Za-z0-9_])/EVBUFFER_IOVEC_IS_NATIVE_/g;
s/(?<![A-Za-z0-9_])_evbuffer_overlapped_get_fd(?![A-Za-z0-9_])/evbuffer_overlapped_get_fd_/g;
s/(?<![A-Za-z0-9_])_evbuffer_overlapped_set_fd(?![A-Za-z0-9_])/evbuffer_overlapped_set_fd_/g;
s/(?<![A-Za-z0-9_])_evbuffer_read_setup_vecs(?![A-Za-z0-9_])/evbuffer_read_setup_vecs_/g;
s/(?<![A-Za-z0-9_])_evbuffer_validate(?![A-Za-z0-9_])/evbuffer_validate_/g;
s/(?<![A-Za-z0-9_])_evdns_log(?![A-Za-z0-9_])/evdns_log_/g;
s/(?<![A-Za-z0-9_])_evdns_nameserver_add_impl(?![A-Za-z0-9_])/evdns_nameserver_add_impl_/g;
s/(?<![A-Za-z0-9_])_EVENT_CONFIG_H_(?![A-Za-z0-9_])/EVENT_CONFIG_H__/g;
s/(?<![A-Za-z0-9_])_event_debug_assert_is_setup(?![A-Za-z0-9_])/event_debug_assert_is_setup_/g;
s/(?<![A-Za-z0-9_])_event_debug_assert_not_added(?![A-Za-z0-9_])/event_debug_assert_not_added_/g;
s/(?<![A-Za-z0-9_])_event_debug_get_logging_mask(?![A-Za-z0-9_])/event_debug_get_logging_mask_/g;
s/(?<![A-Za-z0-9_])_event_debug_logging_mask(?![A-Za-z0-9_])/event_debug_logging_mask_/g;
s/(?<![A-Za-z0-9_])_event_debug_map_lock(?![A-Za-z0-9_])/event_debug_map_lock_/g;
s/(?<![A-Za-z0-9_])_event_debug_mode_on(?![A-Za-z0-9_])/event_debug_mode_on_/g;
s/(?<![A-Za-z0-9_])_event_debug_note_add(?![A-Za-z0-9_])/event_debug_note_add_/g;
s/(?<![A-Za-z0-9_])_event_debug_note_del(?![A-Za-z0-9_])/event_debug_note_del_/g;
s/(?<![A-Za-z0-9_])_event_debug_note_setup(?![A-Za-z0-9_])/event_debug_note_setup_/g;
s/(?<![A-Za-z0-9_])_event_debug_note_teardown(?![A-Za-z0-9_])/event_debug_note_teardown_/g;
s/(?<![A-Za-z0-9_])_event_debugx(?![A-Za-z0-9_])/event_debugx_/g;
s/(?<![A-Za-z0-9_])_EVENT_DEFINED_LISTENTRY(?![A-Za-z0-9_])/EVENT_DEFINED_LISTENTRY_/g;
s/(?<![A-Za-z0-9_])_EVENT_DEFINED_TQENTRY(?![A-Za-z0-9_])/EVENT_DEFINED_TQENTRY_/g;
s/(?<![A-Za-z0-9_])_EVENT_DEFINED_TQHEAD(?![A-Za-z0-9_])/EVENT_DEFINED_TQHEAD_/g;
s/(?<![A-Za-z0-9_])_EVENT_DNS_USE_FTIME_FOR_ID(?![A-Za-z0-9_])/EVENT_DNS_USE_FTIME_FOR_ID_/g;
s/(?<![A-Za-z0-9_])_EVENT_ERR_ABORT(?![A-Za-z0-9_])/EVENT_ERR_ABORT_/g;
s/(?<![A-Za-z0-9_])_EVENT_EVCONFIG__PRIVATE_H(?![A-Za-z0-9_])/EVENT_EVCONFIG__PRIVATE_H_/g;
s/(?<![A-Za-z0-9_])_event_iocp_port_unlock_and_free(?![A-Za-z0-9_])/event_iocp_port_unlock_and_free_/g;
s/(?<![A-Za-z0-9_])_EVENT_LOG_DEBUG(?![A-Za-z0-9_])/EVENT_LOG_DEBUG/g;
s/(?<![A-Za-z0-9_])_EVENT_LOG_ERR(?![A-Za-z0-9_])/EVENT_LOG_ERR/g;
s/(?<![A-Za-z0-9_])_EVENT_LOG_MSG(?![A-Za-z0-9_])/EVENT_LOG_MSG/g;
s/(?<![A-Za-z0-9_])_EVENT_LOG_WARN(?![A-Za-z0-9_])/EVENT_LOG_WARN/g;
s/(?<![A-Za-z0-9_])_event_strlcpy(?![A-Za-z0-9_])/event_strlcpy_/g;
s/(?<![A-Za-z0-9_])_EVHTTP_REQ_UNKNOWN(?![A-Za-z0-9_])/EVHTTP_REQ_UNKNOWN_/g;
s/(?<![A-Za-z0-9_])_EVLOCK_SORTLOCKS(?![A-Za-z0-9_])/EVLOCK_SORTLOCKS_/g;
s/(?<![A-Za-z0-9_])_evrpc_hooks(?![A-Za-z0-9_])/evrpc_hooks_/g;
s/(?<![A-Za-z0-9_])_evsig_restore_handler(?![A-Za-z0-9_])/evsig_restore_handler_/g;
s/(?<![A-Za-z0-9_])_evsig_set_handler(?![A-Za-z0-9_])/evsig_set_handler_/g;
s/(?<![A-Za-z0-9_])_evthread_cond_fns(?![A-Za-z0-9_])/evthread_cond_fns_/g;
s/(?<![A-Za-z0-9_])_evthread_debug_get_real_lock(?![A-Za-z0-9_])/evthread_debug_get_real_lock_/g;
s/(?<![A-Za-z0-9_])_evthread_id_fn(?![A-Za-z0-9_])/evthread_id_fn_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_cond_alloc(?![A-Za-z0-9_])/evthreadimpl_cond_alloc_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_cond_free(?![A-Za-z0-9_])/evthreadimpl_cond_free_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_cond_signal(?![A-Za-z0-9_])/evthreadimpl_cond_signal_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_cond_wait(?![A-Za-z0-9_])/evthreadimpl_cond_wait_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_get_id(?![A-Za-z0-9_])/evthreadimpl_get_id_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_is_lock_debugging_enabled(?![A-Za-z0-9_])/evthreadimpl_is_lock_debugging_enabled_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_lock_alloc(?![A-Za-z0-9_])/evthreadimpl_lock_alloc_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_lock_free(?![A-Za-z0-9_])/evthreadimpl_lock_free_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_locking_enabled(?![A-Za-z0-9_])/evthreadimpl_locking_enabled_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_lock_lock(?![A-Za-z0-9_])/evthreadimpl_lock_lock_/g;
s/(?<![A-Za-z0-9_])_evthreadimpl_lock_unlock(?![A-Za-z0-9_])/evthreadimpl_lock_unlock_/g;
s/(?<![A-Za-z0-9_])_evthread_is_debug_lock_held(?![A-Za-z0-9_])/evthread_is_debug_lock_held_/g;
s/(?<![A-Za-z0-9_])_evthread_lock_debugging_enabled(?![A-Za-z0-9_])/evthread_lock_debugging_enabled_/g;
s/(?<![A-Za-z0-9_])_evthread_lock_fns(?![A-Za-z0-9_])/evthread_lock_fns_/g;
s/(?<![A-Za-z0-9_])_EVUTIL_NIL_CONDITION(?![A-Za-z0-9_])/EVUTIL_NIL_CONDITION_/g;
s/(?<![A-Za-z0-9_])_EVUTIL_NIL_STMT(?![A-Za-z0-9_])/EVUTIL_NIL_STMT_/g;
s/(?<![A-Za-z0-9_])_evutil_weakrand(?![A-Za-z0-9_])/evutil_weakrand_/g;
s/(?<![A-Za-z0-9_])_http_close_detection(?![A-Za-z0-9_])/http_close_detection_/g;
s/(?<![A-Za-z0-9_])_http_connection_test(?![A-Za-z0-9_])/http_connection_test_/g;
s/(?<![A-Za-z0-9_])_http_incomplete_test(?![A-Za-z0-9_])/http_incomplete_test_/g;
s/(?<![A-Za-z0-9_])_http_stream_in_test(?![A-Za-z0-9_])/http_stream_in_test_/g;
s/(?<![A-Za-z0-9_])_internal(?![A-Za-z0-9_])/internal_/g;
s/(?<![A-Za-z0-9_])_mm_free_fn(?![A-Za-z0-9_])/mm_free_fn_/g;
s/(?<![A-Za-z0-9_])_mm_malloc_fn(?![A-Za-z0-9_])/mm_malloc_fn_/g;
s/(?<![A-Za-z0-9_])_mm_realloc_fn(?![A-Za-z0-9_])/mm_realloc_fn_/g;
s/(?<![A-Za-z0-9_])_original_cond_fns(?![A-Za-z0-9_])/original_cond_fns_/g;
s/(?<![A-Za-z0-9_])_original_lock_fns(?![A-Za-z0-9_])/original_lock_fns_/g;
s/(?<![A-Za-z0-9_])_rpc_hook_ctx(?![A-Za-z0-9_])/rpc_hook_ctx_/g;
s/(?<![A-Za-z0-9_])_SYS_QUEUE_H_(?![A-Za-z0-9_])/SYS_QUEUE_H__/g;
s/(?<![A-Za-z0-9_])_t(?![A-Za-z0-9_])/t_/g;
s/(?<![A-Za-z0-9_])_t32(?![A-Za-z0-9_])/t32_/g;
s/(?<![A-Za-z0-9_])_test_ai_eq(?![A-Za-z0-9_])/test_ai_eq_/g;
s/(?<![A-Za-z0-9_])_URI_ADD(?![A-Za-z0-9_])/URI_ADD_/g;
s/(?<![A-Za-z0-9_])_URI_FREE_STR(?![A-Za-z0-9_])/URI_FREE_STR_/g;
s/(?<![A-Za-z0-9_])_URI_SET_STR(?![A-Za-z0-9_])/URI_SET_STR_/g;
s/(?<![A-Za-z0-9_])_warn_helper(?![A-Za-z0-9_])/warn_helper_/g;
Previously we used include-guards with names like _EVENT2_EVENT_H_.
But C reserves macros beginning with an underscore for use by the
system. This patch converts all include guards for files like
include/event2/<fname.h> to be of form EVENT2_<FNAME_H>_INCLUDED_,
and all Libevent 1.x headers in include/<fname.h> to be of the form
EVENT1_<FNAME_H>_INCLUDED_, and all internal libevent headers with
names like <fname.h> to the form <FNAME_H>_INCLUDED_.
FNAME_H is here derived from fname.h by replacing every
non-macro-usable character in fname.h with an underscore, and
putting every remaining character in uppercase.
This is an automatic conversion. The script that produced was made by
running the following script over all header files:
=====
#!/usr/bin/perl -w
# Run this on every .h file except config.h, sys/queue.h, WIN32/event2/event-config.h
use strict;
my %macros = ();
my %skipped = ();
FILE: for my $fn (@ARGV) {
my $f = $fn;
if ($fn !~ /^\.\//) {
$f = "./$fn";
}
if ($f eq './config.h' or
$f =~ m#/tree.h$# or
$f =~ m#/queue.h# or
$f =~ m#/event-config.h# or
$f =~ m#/evconfig-private.h#) {
$skipped{$fn} = 1;
next FILE;
}
$skipped{$fn} = 0;
open(F, $fn);
while (<F>) {
if (/^#ifndef ([A-Za-z0-9_]+)/) {
$macros{$fn} = $1;
next FILE;
}
}
}
print "#!/usr/bin/perl -w -i -p\n\n";
for my $fn (@ARGV) {
if (! exists $macros{$fn}) {
print "# No macro known for $fn!\n" if (!$skipped{$fn});
} else {
if ($macros{$fn} !~ /_H_?$/) {
print "# Weird macro for $fn...\n";
}
my $goodmacro = uc $fn;
$goodmacro =~ s#^\./##;
$goodmacro =~ s#INCLUDE/EVENT2#EVENT2#;
$goodmacro =~ s#INCLUDE/#EVENT1_#;
$goodmacro =~ s#TEST/##;
$goodmacro =~ s#[\/\-\.]#_#g;
print "s/(?<![A-Za-z0-9_])$macros{$fn}(?![A-Za-z0-9_])/${goodmacro}_INCLUDED_/g;\n"
}
}
=== And then running the script below that it generated over all
=== the .h files again
#!/usr/bin/perl -w -i -p
s/(?<![A-Za-z0-9_])_BUFFEREVENT_INTERNAL_H_(?![A-Za-z0-9_])/BUFFEREVENT_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_CHANGELIST_H_(?![A-Za-z0-9_])/CHANGELIST_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_DEFER_INTERNAL_H_(?![A-Za-z0-9_])/DEFER_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVBUFFER_INTERNAL_H_(?![A-Za-z0-9_])/EVBUFFER_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_INTERNAL_H_(?![A-Za-z0-9_])/EVENT_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVMAP_H_(?![A-Za-z0-9_])/EVMAP_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVRPC_INTERNAL_H_(?![A-Za-z0-9_])/EVRPC_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVSIGNAL_H_(?![A-Za-z0-9_])/EVSIGNAL_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVTHREAD_INTERNAL_H_(?![A-Za-z0-9_])/EVTHREAD_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_HT_H(?![A-Za-z0-9_])/HT_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_HTTP_INTERNAL_H_(?![A-Za-z0-9_])/HTTP_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVDNS_H_(?![A-Za-z0-9_])/EVENT1_EVDNS_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_H_(?![A-Za-z0-9_])/EVENT1_EVENT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_BUFFER_H_(?![A-Za-z0-9_])/EVENT2_BUFFER_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_BUFFER_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_BUFFER_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_BUFFEREVENT_H_(?![A-Za-z0-9_])/EVENT2_BUFFEREVENT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_BUFFEREVENT_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_BUFFEREVENT_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_BUFFEREVENT_SSL_H_(?![A-Za-z0-9_])/EVENT2_BUFFEREVENT_SSL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_BUFFEREVENT_STRUCT_H_(?![A-Za-z0-9_])/EVENT2_BUFFEREVENT_STRUCT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_DNS_H_(?![A-Za-z0-9_])/EVENT2_DNS_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_DNS_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_DNS_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_DNS_STRUCT_H_(?![A-Za-z0-9_])/EVENT2_DNS_STRUCT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_EVENT_H_(?![A-Za-z0-9_])/EVENT2_EVENT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_EVENT_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_EVENT_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_EVENT_STRUCT_H_(?![A-Za-z0-9_])/EVENT2_EVENT_STRUCT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_HTTP_H_(?![A-Za-z0-9_])/EVENT2_HTTP_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_HTTP_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_HTTP_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_HTTP_STRUCT_H_(?![A-Za-z0-9_])/EVENT2_HTTP_STRUCT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_EVENT_KEYVALQ_STRUCT_H_(?![A-Za-z0-9_])/EVENT2_KEYVALQ_STRUCT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_LISTENER_H_(?![A-Za-z0-9_])/EVENT2_LISTENER_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_RPC_H_(?![A-Za-z0-9_])/EVENT2_RPC_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_RPC_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_RPC_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_RPC_STRUCT_H_(?![A-Za-z0-9_])/EVENT2_RPC_STRUCT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_TAG_H_(?![A-Za-z0-9_])/EVENT2_TAG_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_TAG_COMPAT_H_(?![A-Za-z0-9_])/EVENT2_TAG_COMPAT_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_THREAD_H_(?![A-Za-z0-9_])/EVENT2_THREAD_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT2_UTIL_H_(?![A-Za-z0-9_])/EVENT2_UTIL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVHTTP_H_(?![A-Za-z0-9_])/EVENT1_EVHTTP_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVRPC_H_(?![A-Za-z0-9_])/EVENT1_EVRPC_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVUTIL_H_(?![A-Za-z0-9_])/EVENT1_EVUTIL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_IOCP_INTERNAL_H(?![A-Za-z0-9_])/IOCP_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_IPV6_INTERNAL_H(?![A-Za-z0-9_])/IPV6_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_LOG_H_(?![A-Za-z0-9_])/LOG_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_MIN_HEAP_H_(?![A-Za-z0-9_])/MINHEAP_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_MM_INTERNAL_H(?![A-Za-z0-9_])/MM_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_RATELIM_INTERNAL_H_(?![A-Za-z0-9_])/RATELIM_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_STRLCPY_INTERNAL_H_(?![A-Za-z0-9_])/STRLCPY_INTERNAL_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_REGRESS_H_(?![A-Za-z0-9_])/REGRESS_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_TESTUTILS_H(?![A-Za-z0-9_])/REGRESS_TESTUTILS_H_INCLUDED_/g;
# Weird macro for test/tinytest.h...
s/(?<![A-Za-z0-9_])TINYTEST_H_INCLUDED_(?![A-Za-z0-9_])/TINYTEST_H_INCLUDED_/g;
# No macro known for test/tinytest_local.h!
# Weird macro for test/tinytest_macros.h...
s/(?<![A-Za-z0-9_])TINYTEST_MACROS_H_INCLUDED_(?![A-Za-z0-9_])/TINYTEST_MACROS_H_INCLUDED_/g;
s/(?<![A-Za-z0-9_])_EVENT_UTIL_INTERNAL_H(?![A-Za-z0-9_])/UTIL_INTERNAL_H_INCLUDED_/g;
C reserves all identifiers beginning with an underscore for system
use. But we had been mangling our autoconf identifiers with the
prefix "_EVENT_" to avoid conflict with other programs.
Instead, we will now use the prefix "EVENT__". With any luck, the
double-underscore will still hint "here be dragons" to anybody
tempted to think that event-config.h is a stable api.
This is an automatically generated patch. The script that produced
it was made by running this script over config.h.in:
=====
#!/usr/bin/perl -w
# Run this on config.h.in
use strict;
my %macros = ();
while (<>) {
if (/^# *undef +([A-Za-z0-9_]+)/) {
$macros{$1} = 1;
}
}
print "#!/usr/bin/perl -w -i -p\n\n";
for my $k (sort keys %macros) {
print "s/(?<![A-Za-z0-9_])_EVENT_$k(?![A-Za-z0-9_])/EVENT__$k/g;\n";
}
== And the script that it generated was then run over all .c and .h files:
#!/usr/bin/perl -w -i -p
s/(?<![A-Za-z0-9_])_EVENT_DISABLE_DEBUG_MODE(?![A-Za-z0-9_])/EVENT__DISABLE_DEBUG_MODE/g;
s/(?<![A-Za-z0-9_])_EVENT_DISABLE_MM_REPLACEMENT(?![A-Za-z0-9_])/EVENT__DISABLE_MM_REPLACEMENT/g;
s/(?<![A-Za-z0-9_])_EVENT_DISABLE_THREAD_SUPPORT(?![A-Za-z0-9_])/EVENT__DISABLE_THREAD_SUPPORT/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_ACCEPT4(?![A-Za-z0-9_])/EVENT__HAVE_ACCEPT4/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_ARC4RANDOM(?![A-Za-z0-9_])/EVENT__HAVE_ARC4RANDOM/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_ARC4RANDOM_BUF(?![A-Za-z0-9_])/EVENT__HAVE_ARC4RANDOM_BUF/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_ARPA_INET_H(?![A-Za-z0-9_])/EVENT__HAVE_ARPA_INET_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_CLOCK_GETTIME(?![A-Za-z0-9_])/EVENT__HAVE_CLOCK_GETTIME/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_CTL_KERN(?![A-Za-z0-9_])/EVENT__HAVE_DECL_CTL_KERN/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_KERN_ARND(?![A-Za-z0-9_])/EVENT__HAVE_DECL_KERN_ARND/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_KERN_RANDOM(?![A-Za-z0-9_])/EVENT__HAVE_DECL_KERN_RANDOM/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_DECL_RANDOM_UUID(?![A-Za-z0-9_])/EVENT__HAVE_DECL_RANDOM_UUID/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_DEVPOLL(?![A-Za-z0-9_])/EVENT__HAVE_DEVPOLL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_DLFCN_H(?![A-Za-z0-9_])/EVENT__HAVE_DLFCN_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_EPOLL(?![A-Za-z0-9_])/EVENT__HAVE_EPOLL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_EPOLL_CREATE1(?![A-Za-z0-9_])/EVENT__HAVE_EPOLL_CREATE1/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_EPOLL_CTL(?![A-Za-z0-9_])/EVENT__HAVE_EPOLL_CTL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_EVENTFD(?![A-Za-z0-9_])/EVENT__HAVE_EVENTFD/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_EVENT_PORTS(?![A-Za-z0-9_])/EVENT__HAVE_EVENT_PORTS/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_FCNTL(?![A-Za-z0-9_])/EVENT__HAVE_FCNTL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_FCNTL_H(?![A-Za-z0-9_])/EVENT__HAVE_FCNTL_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_FD_MASK(?![A-Za-z0-9_])/EVENT__HAVE_FD_MASK/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETADDRINFO(?![A-Za-z0-9_])/EVENT__HAVE_GETADDRINFO/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETEGID(?![A-Za-z0-9_])/EVENT__HAVE_GETEGID/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETEUID(?![A-Za-z0-9_])/EVENT__HAVE_GETEUID/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R_3_ARG(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R_3_ARG/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R_5_ARG(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R_5_ARG/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETHOSTBYNAME_R_6_ARG(?![A-Za-z0-9_])/EVENT__HAVE_GETHOSTBYNAME_R_6_ARG/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETIFADDRS(?![A-Za-z0-9_])/EVENT__HAVE_GETIFADDRS/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETNAMEINFO(?![A-Za-z0-9_])/EVENT__HAVE_GETNAMEINFO/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETPROTOBYNUMBER(?![A-Za-z0-9_])/EVENT__HAVE_GETPROTOBYNUMBER/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETSERVBYNAME(?![A-Za-z0-9_])/EVENT__HAVE_GETSERVBYNAME/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_GETTIMEOFDAY(?![A-Za-z0-9_])/EVENT__HAVE_GETTIMEOFDAY/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_IFADDRS_H(?![A-Za-z0-9_])/EVENT__HAVE_IFADDRS_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_INET_ATON(?![A-Za-z0-9_])/EVENT__HAVE_INET_ATON/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_INET_NTOP(?![A-Za-z0-9_])/EVENT__HAVE_INET_NTOP/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_INET_PTON(?![A-Za-z0-9_])/EVENT__HAVE_INET_PTON/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_INTTYPES_H(?![A-Za-z0-9_])/EVENT__HAVE_INTTYPES_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_ISSETUGID(?![A-Za-z0-9_])/EVENT__HAVE_ISSETUGID/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_KQUEUE(?![A-Za-z0-9_])/EVENT__HAVE_KQUEUE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_LIBZ(?![A-Za-z0-9_])/EVENT__HAVE_LIBZ/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_MEMORY_H(?![A-Za-z0-9_])/EVENT__HAVE_MEMORY_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_MMAP(?![A-Za-z0-9_])/EVENT__HAVE_MMAP/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_NANOSLEEP(?![A-Za-z0-9_])/EVENT__HAVE_NANOSLEEP/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETDB_H(?![A-Za-z0-9_])/EVENT__HAVE_NETDB_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETINET_IN6_H(?![A-Za-z0-9_])/EVENT__HAVE_NETINET_IN6_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETINET_IN_H(?![A-Za-z0-9_])/EVENT__HAVE_NETINET_IN_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_NETINET_TCP_H(?![A-Za-z0-9_])/EVENT__HAVE_NETINET_TCP_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_OPENSSL(?![A-Za-z0-9_])/EVENT__HAVE_OPENSSL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PIPE(?![A-Za-z0-9_])/EVENT__HAVE_PIPE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PIPE2(?![A-Za-z0-9_])/EVENT__HAVE_PIPE2/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_POLL(?![A-Za-z0-9_])/EVENT__HAVE_POLL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_POLL_H(?![A-Za-z0-9_])/EVENT__HAVE_POLL_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PORT_CREATE(?![A-Za-z0-9_])/EVENT__HAVE_PORT_CREATE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PORT_H(?![A-Za-z0-9_])/EVENT__HAVE_PORT_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PTHREAD(?![A-Za-z0-9_])/EVENT__HAVE_PTHREAD/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PTHREADS(?![A-Za-z0-9_])/EVENT__HAVE_PTHREADS/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_PUTENV(?![A-Za-z0-9_])/EVENT__HAVE_PUTENV/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SA_FAMILY_T(?![A-Za-z0-9_])/EVENT__HAVE_SA_FAMILY_T/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SELECT(?![A-Za-z0-9_])/EVENT__HAVE_SELECT/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SENDFILE(?![A-Za-z0-9_])/EVENT__HAVE_SENDFILE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SETENV(?![A-Za-z0-9_])/EVENT__HAVE_SETENV/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SETFD(?![A-Za-z0-9_])/EVENT__HAVE_SETFD/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SETRLIMIT(?![A-Za-z0-9_])/EVENT__HAVE_SETRLIMIT/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SIGACTION(?![A-Za-z0-9_])/EVENT__HAVE_SIGACTION/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SIGNAL(?![A-Za-z0-9_])/EVENT__HAVE_SIGNAL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SPLICE(?![A-Za-z0-9_])/EVENT__HAVE_SPLICE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDARG_H(?![A-Za-z0-9_])/EVENT__HAVE_STDARG_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDDEF_H(?![A-Za-z0-9_])/EVENT__HAVE_STDDEF_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDINT_H(?![A-Za-z0-9_])/EVENT__HAVE_STDINT_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STDLIB_H(?![A-Za-z0-9_])/EVENT__HAVE_STDLIB_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRINGS_H(?![A-Za-z0-9_])/EVENT__HAVE_STRINGS_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRING_H(?![A-Za-z0-9_])/EVENT__HAVE_STRING_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRLCPY(?![A-Za-z0-9_])/EVENT__HAVE_STRLCPY/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRSEP(?![A-Za-z0-9_])/EVENT__HAVE_STRSEP/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRTOK_R(?![A-Za-z0-9_])/EVENT__HAVE_STRTOK_R/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRTOLL(?![A-Za-z0-9_])/EVENT__HAVE_STRTOLL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_ADDRINFO(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_ADDRINFO/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_IN6_ADDR(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_IN6_ADDR/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_IN6_ADDR_S6_ADDR16(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_IN6_ADDR_S6_ADDR16/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_IN6_ADDR_S6_ADDR32(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_IN6_ADDR_S6_ADDR32/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_IN6(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_IN6/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_IN_SIN_LEN(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_IN_SIN_LEN/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_STORAGE(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_STORAGE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY(?![A-Za-z0-9_])/EVENT__HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYSCTL(?![A-Za-z0-9_])/EVENT__HAVE_SYSCTL/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_DEVPOLL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_DEVPOLL_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_EPOLL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_EPOLL_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_EVENTFD_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_EVENTFD_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_EVENT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_EVENT_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_IOCTL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_IOCTL_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_MMAN_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_MMAN_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_PARAM_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_PARAM_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_QUEUE_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_QUEUE_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_RESOURCE_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_RESOURCE_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SELECT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SELECT_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SENDFILE_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SENDFILE_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SOCKET_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SOCKET_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_STAT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_STAT_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_SYSCTL_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_SYSCTL_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_TIME_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_TIME_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_TYPES_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_TYPES_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_UIO_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_UIO_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_SYS_WAIT_H(?![A-Za-z0-9_])/EVENT__HAVE_SYS_WAIT_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_TAILQFOREACH(?![A-Za-z0-9_])/EVENT__HAVE_TAILQFOREACH/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERADD(?![A-Za-z0-9_])/EVENT__HAVE_TIMERADD/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERCLEAR(?![A-Za-z0-9_])/EVENT__HAVE_TIMERCLEAR/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERCMP(?![A-Za-z0-9_])/EVENT__HAVE_TIMERCMP/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_TIMERISSET(?![A-Za-z0-9_])/EVENT__HAVE_TIMERISSET/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT16_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT16_T/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT32_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT32_T/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT64_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT64_T/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINT8_T(?![A-Za-z0-9_])/EVENT__HAVE_UINT8_T/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UINTPTR_T(?![A-Za-z0-9_])/EVENT__HAVE_UINTPTR_T/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UNISTD_H(?![A-Za-z0-9_])/EVENT__HAVE_UNISTD_H/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_UNSETENV(?![A-Za-z0-9_])/EVENT__HAVE_UNSETENV/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_USLEEP(?![A-Za-z0-9_])/EVENT__HAVE_USLEEP/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_VASPRINTF(?![A-Za-z0-9_])/EVENT__HAVE_VASPRINTF/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_WORKING_KQUEUE(?![A-Za-z0-9_])/EVENT__HAVE_WORKING_KQUEUE/g;
s/(?<![A-Za-z0-9_])_EVENT_HAVE_ZLIB_H(?![A-Za-z0-9_])/EVENT__HAVE_ZLIB_H/g;
s/(?<![A-Za-z0-9_])_EVENT_LT_OBJDIR(?![A-Za-z0-9_])/EVENT__LT_OBJDIR/g;
s/(?<![A-Za-z0-9_])_EVENT_NO_MINUS_C_MINUS_O(?![A-Za-z0-9_])/EVENT__NO_MINUS_C_MINUS_O/g;
s/(?<![A-Za-z0-9_])_EVENT_NUMERIC_VERSION(?![A-Za-z0-9_])/EVENT__NUMERIC_VERSION/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE(?![A-Za-z0-9_])/EVENT__PACKAGE/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_BUGREPORT(?![A-Za-z0-9_])/EVENT__PACKAGE_BUGREPORT/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_NAME(?![A-Za-z0-9_])/EVENT__PACKAGE_NAME/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_STRING(?![A-Za-z0-9_])/EVENT__PACKAGE_STRING/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_TARNAME(?![A-Za-z0-9_])/EVENT__PACKAGE_TARNAME/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_URL(?![A-Za-z0-9_])/EVENT__PACKAGE_URL/g;
s/(?<![A-Za-z0-9_])_EVENT_PACKAGE_VERSION(?![A-Za-z0-9_])/EVENT__PACKAGE_VERSION/g;
s/(?<![A-Za-z0-9_])_EVENT_PTHREAD_CREATE_JOINABLE(?![A-Za-z0-9_])/EVENT__PTHREAD_CREATE_JOINABLE/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_INT(?![A-Za-z0-9_])/EVENT__SIZEOF_INT/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_LONG(?![A-Za-z0-9_])/EVENT__SIZEOF_LONG/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_LONG_LONG(?![A-Za-z0-9_])/EVENT__SIZEOF_LONG_LONG/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_OFF_T(?![A-Za-z0-9_])/EVENT__SIZEOF_OFF_T/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_PTHREAD_T(?![A-Za-z0-9_])/EVENT__SIZEOF_PTHREAD_T/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_SHORT(?![A-Za-z0-9_])/EVENT__SIZEOF_SHORT/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_SIZE_T(?![A-Za-z0-9_])/EVENT__SIZEOF_SIZE_T/g;
s/(?<![A-Za-z0-9_])_EVENT_SIZEOF_VOID_P(?![A-Za-z0-9_])/EVENT__SIZEOF_VOID_P/g;
s/(?<![A-Za-z0-9_])_EVENT_STDC_HEADERS(?![A-Za-z0-9_])/EVENT__STDC_HEADERS/g;
s/(?<![A-Za-z0-9_])_EVENT_TIME_WITH_SYS_TIME(?![A-Za-z0-9_])/EVENT__TIME_WITH_SYS_TIME/g;
s/(?<![A-Za-z0-9_])_EVENT_VERSION(?![A-Za-z0-9_])/EVENT__VERSION/g;
s/(?<![A-Za-z0-9_])_EVENT__ALL_SOURCE(?![A-Za-z0-9_])/EVENT___ALL_SOURCE/g;
s/(?<![A-Za-z0-9_])_EVENT__FILE_OFFSET_BITS(?![A-Za-z0-9_])/EVENT___FILE_OFFSET_BITS/g;
s/(?<![A-Za-z0-9_])_EVENT__GNU_SOURCE(?![A-Za-z0-9_])/EVENT___GNU_SOURCE/g;
s/(?<![A-Za-z0-9_])_EVENT__LARGE_FILES(?![A-Za-z0-9_])/EVENT___LARGE_FILES/g;
s/(?<![A-Za-z0-9_])_EVENT__MINIX(?![A-Za-z0-9_])/EVENT___MINIX/g;
s/(?<![A-Za-z0-9_])_EVENT__POSIX_1_SOURCE(?![A-Za-z0-9_])/EVENT___POSIX_1_SOURCE/g;
s/(?<![A-Za-z0-9_])_EVENT__POSIX_PTHREAD_SEMANTICS(?![A-Za-z0-9_])/EVENT___POSIX_PTHREAD_SEMANTICS/g;
s/(?<![A-Za-z0-9_])_EVENT__POSIX_SOURCE(?![A-Za-z0-9_])/EVENT___POSIX_SOURCE/g;
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Instead of having a file segment born as one type and stay that way
forever, let them start out unmapped, but map themselves as needed
if they need to get written out on a non-drains_to_fd evbuffer.
The sendfile() implementation for evbuffer_add_file is potentially more
efficient, but it has a problem: you can only use it to send bytes over
a socket using sendfile(). If you are writing bytes via SSL_send() or
via a filter, or if you need to be able to inspect your buffer, it
doesn't work.
As an easy fix, this patch disables the sendfile-based implementation of
evbuffer_add_file on an evbuffer unless the user sets a new
EVBUFFER_FLAG_DRAINS_TO_FD flag on that evbuffer, indicating that the
evbuffer will not be inspected, but only written out via
evbuffer_write(), evbuffer_write_atmost(), or drained with stuff like
evbuffer_drain() or evbuffer_add_buffer(). This flag is off by
default, except for evbuffers used for output on bufferevent_socket.
In the future, it could be interesting to make a best-effort file
segment implementation that tries to send via sendfile, but mmaps on
demand. That's too much complexity for a stable release series, though.
- Prevent evbuffer_{add,prepend}_buffer from moving read-pinned chains.
- Fix evbuffer_drain to handle read-pinned chains better.
- Raise the limit on WSABUFs from two to MAX_WSABUFS for overlapped reads.
There's no reason to traverse these out-of-order, and we never defined
the order that you'd get your callbacks on an evbuffer if you happened
to add more than one.
To implement evbuffer_expand() properly, you need to be able to
replace the last chunk that has data, which means that we need to keep
track of the the next pointer pointing to the last_with_data chunk,
not the last_with_data chunk itself.
This constant decides the smallest (and typical) size of each evbuffer
chain. Since this number includes sizeof(evbuffer_chain) overhead,
the old value (256) was just too low: on 64-bit platforms, it would
spend nearly 20% of the allocations on overhead. The new values mean
that we'll be spending closer to 5% of evbuffer allocations on overhead.
It would be nice to get this number even lower if we can.
This actually makes some of the code a lot simpler. The only
ones that actually used previous_to_last for anything were reserving
and committing space.
This is the first patch in a series to replace previous_to_last with
last_with_data. Currently, we can only use two partially empty chains
at the end of an evbuffer, so if we have one with 511 bytes free, and
another with 512 bytes free, and we try to do a 1024 byte read, we
can't just stick another chain on the end: we need to reallocate the
last one. That's stupid and inefficient.
Instead, this patch adds a last_with_data pointer to eventually
replace previous_to_last. Instead of pointing to the penultimated
chain (if any) as previous_to_last does, last_with_data points to the
last chain that has any data in it, if any. If all chains are empty,
last_with_data points to the first chain. If there are no chains,
last_with_data is NULL.
The next step is to start using last_with_data everywhere that we
currently use previous_to_last. When that's done, we can remove
previous_to_last and the code that maintains it.
There were a couple of places in the code where we manually kept lock
counts to make sure we never accessed resources without holding a
lock, and that we never released a lock we didn't have. The
lock-debugging code already puts counts on _every_ lock when lock
debugging is enabled, so there is no need to keep these counts around
otherwise. This patch rewrites the ASSERT_FOO_LOCKED macros to all
use a common EVLOCK_ASSERT_LOCKED().
We also teach the lock debugging code to keep track of who exactly
holds each lock, so that EVLOCK_ASSERT_LOCKED() means "locked by this
thread."
Previously, our default lock model kind of assumed that every lock was
potentially a read-write lock. This was a poor choice, since
read-write locks are far more expensive than regular locks, and so the
lock API should only use them when we can actually take advantage of
them. Neither our pthreads or win32 lock implementation provided rw
locks.
Now that we have a way (not currently used!) to indicate that we
really want a read-write lock, we shouldn't actually say "lock this
for reading" or "lock this for writing" unless we mean it.
This patch from Chris Davis saves some callback depth, and adds proper
ref-counting to bufferevents when there's a deferred evbuffer callback
inflight. It could use a couple more comments to really nail down what
its invariants are.
svn:r1543
