���� JFIF  XX �� �� �     $.' ",#(7),01444'9=82<.342  2!!22222222222222222222222222222222222222222222222222�� ��" �� 4     ��   �� �,�PG"Z_�4�˷����kjز�Z�,F+��_z�,�© �����zh6�٨�ic�fu��� #ډb���_�N� ?� �wQ���5-�~�I���8��� �TK<5o�Iv-� ����k�_U_����� ~b�M��d��� �Ӝ�U�Hh��?]��E�w��Q���k�{��_}qFW7HTՑ��Y��F� ?_�'ϔ��_�Ջt� �=||I �� 6�έ"�����D���/[�k�9�� �Y�8 ds|\���Ҿp6�Ҵ���]��.����6� z<�v��@]�i% �� $j��~ �g��J>��no����pM[me�i$[�� �� s�o�ᘨ�˸ nɜG-�ĨU�ycP� 3.DB�li�;� �hj���x 7Z^�N�h��� ���N3u{�:j �x�힞��#M &��jL P@ _���� P�� &��o8 ������9 �����@Sz 6�t7#O�ߋ � s}Yf�T� ��lmr����Z)'N��k�۞p ����w\�T ȯ?�8` �O��i{wﭹW�[�r�� ��Q4F�׊�� �3m&L�=��h3� ���z~��#� \�l :�F,j@�� ʱ�wQT����8�"kJO��� 6�֚l���� }��� R�>ډK���]��y����&����p�}b�� ;N�1�m�r$� |��7�>e�@ B�TM*-i H��g�D�)� E�m�|�ؘbҗ�a ��Ҿ���� t4��� o���G��*oCN�rP���Q��@z,|?W[0 �����:�n,j WiE��W� �$~/�hp\��?��{(�0���+�Y8rΟ�+����>S-S�� ��VN;� }�s?.����� w �9��˟<���Mq4�Wv' ��{)0�1mB ��V����W[� ����8�/<� �%���wT^�5���b��)iM� p g�N�&ݝ� �VO~� q���u���9� ����!��J27��� �$ O-���! �: �%H��� ـ ����y�ΠM=t{!S�� oK8������ t<����è :a�� ����[���� �ա�H���~��w��Qz`�p o�^ �� ��Q��n�  �,uu�C� $ ^���,� �����8�#��:�6��e�|~� ��!�3� 3.�\0�� q��o�4`.|� ����y�Q�`~;�d�ׯ,��O�Zw�������`73�v�܋�< ���Ȏ�� ـ4k��5�K�a�u�=9Yd��$>x�A�&�� j0� ���vF��� Y� |�y��� ~�6�@c��1vOp �Ig�� ��4��l�OD� ��L����� R���c���j�_�uX 6��3?nk��Wy�f;^*B� ��@ �~a�`��Eu������ +� �� 6�L��.ü>��}y���}_�O�6�͐�:�Yr G�X��kG�� ���l^w�� �~㒶sy� �Iu�!� W ��X��N�7BV��O��!X�2����wvG�R�f�T#�����t�/?���%8�^�W�aT ��G�cL�M���I��(J����1~�8�?aT ���]����AS�E��(��*E}� 2�� #I/�׍qz��^t�̔��� b�Yz4x ���t�){ OH� �+(E��A&�N�������XT��o��"�XC�� '���)}�J�z�p� ��~5�}�^����+�6����w��c��Q�| Lp�d�H��}�(�.|����k��c4^� "�����Z?ȕ ��a< �L�!0 39C� �Eu� C�F�Ew�ç ;�n?�*o���B�8�bʝ���'#Rqf�� �M}7����]��� �s2tcS{�\icTx;�\��7K���P ���ʇ Z O-��~�� c>"��?�� �����P ��E��O�8��@�8��G��Q�g�a�Վ���󁶠 �䧘��_%#r�>� 1�z�a�� eb��qcP ѵ��n���#L��� =��׀t� L�7�` ��V��� A{�C:�g���e@ �w1 Xp 3�c3�ġ���� p��M"'-�@n4���fG� �B3�DJ�8[Jo�ߐ���gK)ƛ��$���� � ��8�3�����+���� �����6�ʻ���� ���S�kI�*KZlT _`�� �?��K� ���QK�d ����B`�s}�>���` ��*�>��,*@J�d�oF*� ���弝��O}�k��s��]��y�ߘ ��c1G�V���<=�7��7����6 �q�PT��tXԀ�!9*4�4Tހ 3XΛex�46�� �Y��D ����� �BdemDa����\�_l,� �G�/���֌7���Y�](�xTt^%�GE�����4�}bT ���ڹ�����; Y)���B�Q��u��>J/J � ⮶.�XԄ��j�ݳ� +E��d ��r�5�_D �1 �� o�� �B�x�΢�#� ��<��W�����8���R6�@ g�M�.��� dr�D��>(otU��@ x=��~v���2� ӣ�d�oBd ��3�eO�6�㣷�� ���ݜ 6��6Y��Qz`�� S��{���\P �~z m5{J/L��1������<�e�ͅPu� b�]�ϔ ���'�� ����f�b� Zpw��c`"��i���BD@:)ִ�:�]��h v�E� w���T�l ��P� ��"Ju�}��وV J��G6��. J/�Qgl߭�e�����@�z�Zev2u� )]կ��� ��7x�� �s�M�-<ɯ�c��r� v�����@��$�ޮ}lk���a�� �'����>x��O\�Z Fu>��� ��ck#��&:��`�$ �ai�>2Δ����l���oF[h� �lE�ܺ�Π k:)���` �� $[6�����9�����kOw�\|��� 8}������ބ:��񶐕� �I�A1/� =�2[�,�!��.}gN#�u����b ��� ~� �݊��}34q��� �d�E��L c��$ ��"�[q�U�硬g^��%B � z���r�p J�ru%v\h 1Y�ne` ǥ:g�� �pQM~�^� Xi� ��`S�:V2 9.�P���V� ?B�k�� AEvw%�_�9C�Q����wKekP ؠ�\� ;Io d�{ ߞo�c1eP��� �\� `����E=���@K<�Y�� �eڼ�J ���w����{av�F�'�M�@ /J��+9p ���|]���� �Iw &` ��8���& M�hg ��[�{ ��Xj�� %��Ӓ� $��(��� �ʹN��� <>�I���RY� ��K2�NPlL�ɀ )��&e� ���B+ь����( � �JTx ���_?EZ� }@ 6�U���뙢ط�z��dWI� n` D����噥�[��uV��"�G& Ú����2 g�}&m� �?ċ �"����Om#� ������� � ��{� ON��"S�X ��Ne��ysQ���@ Fn��Vg��� dX�~nj� ]J�<�K]: ��FW�� b�������62 �=��5f����JKw� �bf�X� 55��~J �%^� ���:�-�QIE��P��v�nZum� z � ~ə ���� ���ة����;�f��\v��� g�8�1��f2 4;�V���ǔ�)��� �9���1\�� c��v�/'Ƞ�w����� ��$�4�R-��t�� �� e�6�/�ġ �̕Ecy�J���u�B���<�W�ַ~�w[B1L۲�-JS΂�{���΃���� ��A��20�c# �� @    0!1@AP"#2Q`$3V�%45a6�FRUq���   � ���^7ׅ,$n� ������+��F�`��2X'��0vM��p�L=������ 5��8������u�p~���.�`r�����\��� O��,ư�0oS ��_�M�����l���4�kv\JSd���x���SW�<��Ae�IX����������$I���w�:S���y���›R��9�Q[���,�5�;�@]�%���u�@ *ro�lbI �� ��+���%m:�͇ZV�����u�̉����θau<�fc�.����{�4Ա� �Q����*�Sm��8\ujqs]{kN���)qO�y�_*dJ�b�7���yQqI&9�ԌK!�M}�R�;�� ����S�T���1���i[U�ɵz�]��U)V�S6���3$K{� ߊ<�(� E]Զ[ǼENg�����'�\?#)Dkf��J���o��v���'�%ƞ�&K�u� !��b�35LX�Ϸ��63$K�a�;�9>,R��W��3�3� d�JeTYE.Mϧ��-�o�j3+y��y^�c�������VO�9NV\nd�1 ��!͕_)a�v;����թ�M�lWR1��)El��P;��yوÏ�u 3�k�5Pr6<�⒲l�!˞*��u־�n�!�l:����UNW ��%��Chx8vL'��X�@��*��)���̮��ˍ��� � ��D-M�+J�U�kvK����+�x8��cY������?�Ԡ��~3mo��|�u@[XeY�C�\Kp�x8�oC�C�&����N�~3-H���� ��MX�s�u<`���~"WL��$8ξ��3���a�)|:@�m�\���^�`�@ҷ)�5p+��6���p�%i)P M���ngc�����#0Aruz���RL+xSS?���ʮ}()#�t��mˇ!��0}}y����<�e� �-ή�Ԩ��X������ MF���ԙ~l L.3���}�V뽺�v��� ��멬��Nl�)�2����^�Iq��a��M��qG��T�����c3#������3U�Ǎ���}��לS�|qa��ڃ�+���-��2�f����/��bz��ڐ�� �ݼ[2�ç����k�X�2�* �Z�d���J�G����M*9W���s{��w���T��x��y,�in�O�v��]���n����P�$� JB@=4�OTI�n��e�22a\����q�d���%�$��(���:���: /*�K[PR�fr\nڙdN���F�n�$�4� [�� U�zƶ����� �mʋ���,�ao�u 3�z� �x��Kn����\[��VFmbE;�_U��&V�Gg�]L�۪&#n%�$ɯ� dG���D�TI=�%+AB�Ru#��b4�1�»x�cs�YzڙJG��f��Il� �d�eF'T� iA��T���uC�$����Y��H?����[!G`}���ͪ� �纤Hv\������j�Ex�K���!���OiƸ�Yj�+u-<���'q����uN�*�r\��+�]���<�wOZ.fp�ێ��,-*)V?j-kÊ#�`�r��dV����(�ݽBk�����G�ƛk�QmUڗe��Z���f}|����8�8��a���i��3'J�����~G_�^���d�8w������ R�`(�~�.��u���l�s+g�bv���W���lGc}��u���afE~1�Ue������Z�0�8�=e�� f@/�jqEKQQ�J� �oN��J���W5~M>$6�Lt�;$ʳ{���^��6�{����v6���ķܰg�V�cnn �~z�x�«�,2�u�?cE+Ș�H؎�%�Za�)���X>uW�Tz�Nyo����s���FQƤ��$��*�&�LLXL)�1�" L��eO��ɟ�9=���:t��Z���c��Ž���Y?�ӭV�wv�~,Y��r�ۗ�|�y��GaF�����C�����.�+� ���v1���fήJ�����]�S��T��B��n5sW}y�$��~z�'�c ��8 ��� ,! �p��VN�S��N�N�q��y8z˱�A��4��*��'������2n<�s���^ǧ˭P�Jޮɏ�U�G�L�J�*#��<�V��t7�8����TĜ>��i}K%,���)[��z�21z ?�N�i�n1?T�I�R#��m-�����������������1����lA�`��fT5+��ܐ�c�q՝��ʐ��,���3�f2U�եmab��#ŠdQ�y>\��)�SLY����w#��.���ʑ�f��� ,"+�w�~�N�'�c�O�3F�������N<���)j��&��,-� �љ���֊�_�zS���TǦ����w�>��?�������n��U仆�V���e�����0���$�C�d���rP �m�׈e�Xm�Vu� �L��.�bֹ��� �[Դaզ���*��\y�8�Է:�Ez\�0�Kq�C b��̘��cө���Q��=0Y��s�N��S.��� 3.���O�o:���#���v7�[#߫ ��5�܎�L���Er4���9n��COWlG�^��0k�%<���ZB���aB_���������'=��{i�v�l�$�uC���mƎҝ{�c㱼�y]���W�i ��ߧc��m�H� m�"�"�����;Y�ߝ�Z�Ǔ�����:S#��|}�y�,/k�Ld� TA�(�AI$+I3��;Y*���Z��}|��ӧO��d�v��..#:n��f>�>���ȶI�TX��� 8��y����"d�R�|�)0���=���n4��6ⲑ�+��r<�O�܂~zh�z����7ܓ�HH�Ga롏���nCo�>������a ���~]���R���̲c?�6(�q�;5%� |�uj�~z8R =X��I�V=�|{v�Gj\gc��q����z�؋%M�ߍ����1y��#��@f^���^�>N��� ��#x#۹��6�Y~�?�dfPO��{��P�4��V��u1E1J �*|���%�� �JN��`eWu�zk M6���q t[�� ��g�G���v��WIG��u_ft����5�j�"�Y�:T��ɐ���*�;� e5���4����q$C��2d�}���� _S�L#m�Yp��O�.�C�;��c����Hi#֩%+) �Ӎ��ƲV���SYź��g |���tj��3�8���r|���V��1#;.SQ�A[���S������#���`n�+���$��$ I �P\[�@�s��(�ED�z���P��])8�G#��0B��[ى��X�II�q<��9�~[Z멜�Z�⊔IWU&A>�P~�#��dp<�?����7���c��'~���5 ��+$���lx@�M�dm��n<=e�dyX��?{�|Aef ,|n3�<~z�ƃ�uۧ�����P��Y,�ӥQ�*g�#먙R�\���;T��i,��[9Qi歉����c>]9�� ��"�c��P�� �Md?٥��If�ت�u��k��/����F��9�c*9��Ǎ:�ØF���z�n*�@|I�ށ9����N3{'��[�'ͬ�Ҳ4��#}��!�V� Fu��,�,mTIk���v C�7v���B�6k�T9��1�*l� '~��ƞF��lU��'�M ����][ΩũJ_�{�i�I�n��$�� �L�� j��O�dx�����kza۪��#�E��Cl����x˘�o�����V���ɞ�ljr��)�/,�߬h�L��#��^��L�ф�,íMƁe�̩�NB�L�����iL����q�}��(��q��6IçJ$�W�E$��:������=#����(�K�B����zђ <��K(�N�۫K�w��^O{!����) �H���>x�������lx�?>Պ�+�>�W���,Ly!_�D���Ō�l���Q�!�[ �S����J��1��Ɛ�Y}��b,+�Lo�x�ɓ)����=�y�oh�@�꥟/��I��ѭ=��P�y9��� �ۍYӘ�e+�p�Jnϱ?V\SO%�(�t� ���=?MR�[Ș�����d�/ ��n�l��B�7j� ��!�;ӥ�/�[-���A�>� dN�sLj ��,ɪv��=1c�.SQ�O3�U���ƀ�ܽ�E����������̻��9G�ϷD�7(�}��Ävӌ\� y�_0[w ���<΍>����a_��[0+�L��F.�޺��f�>oN�T����q;���y\��bՃ��y�jH�<|q-eɏ�_?_9+P���Hp$�����[ux�K w�Mw��N�ی'$Y2�=��q���KB��P��~�� ����Yul:�[<����F1�2�O���5=d����]Y�sw:���Ϯ���E��j,_Q��X��z`H1,#II ��d�wr��P˂@�ZJV����y$�\y�{}��^~���[:N����ߌ�U�������O��d�����ؾe��${p>G��3c���Ė�lʌ�� ת��[��`ϱ�-W����dg�I��ig2��� ��}s ��ؤ(%#sS@���~���3�X�nRG�~\jc3�v��ӍL��M[JB�T��s3}��j�Nʖ��W����;7� �ç?=X�F=-�=����q�ߚ���#���='�c��7���ڑW�I(O+=:uxq�������������e2�zi+�kuG�R��������0�&e�n���iT^J����~\jy���p'dtG��s����O��3����9* �b#Ɋ�� p������[Bws�T�>d4�ۧs���nv�n���U���_�~,�v����ƜJ1��s�� �QIz�� )�(lv8M���U=�;����56��G���s#�K���MP�=��LvyGd��}�VwWBF�'�à �?MH�U�g2�� ����!�p�7Q��j��ڴ����=��j�u��� Jn�A s���uM������e��Ɔ�Ҕ�!) '��8Ϣ�ٔ� �ޝ(��Vp���צ֖d=�IC�J�Ǡ{q������kԭ�߸���i��@K����u�|�p=..�*+����x�����z[Aqġ#s2a�Ɗ���RR�)*HRsi�~�a &f��M��P����-K�L@��Z��Xy�'x�{}��Zm+���:�)�) IJ�-i�u���� ���ܒH��'� L(7�y�GӜq���� j��� 6ߌg1�g�o���,kر���tY�?W,���p���e���f�OQS��!K�۟cҒA�|ս�j�>��=⬒��˧L[�� �߿2JaB~R��u�:��Q�] �0H~���]�7��Ƽ�I���( }��cq '�ήET���q�?f�ab���ӥvr� �)o��-Q��_'����ᴎo��K������;��V���o��%���~OK ����*��b�f:���-ťIR��`B�5!RB@���ï�� �u �̯e\�_U�_������� g�ES��3������� QT��a�� ��x����U<~�c?�*�#]�MW,[8O�a�x��]�1bC|踤�P��lw5V%�)�{t�<��d��5���0i�XSU��m:��Z�┵�i�"��1�^B�-��P�hJ��&)O��*�D��c�W��vM��)����}���P��ܗ-q����\mmζZ-l@�}��a��E�6��F�@��&Sg@���ݚ�M����� ȹ 4����#p�\H����dYDo�H���"��\��..R�B�H�z_�/5˘����6��KhJR��P�mƶi�m���3� ,#c�co��q�a)*P t����R�m�k�7x�D�E�\Y�閣_X�<���~�)���c[[�BP����6�Yq���S��0����%_����;��Àv�~�| VS؇ ��'O0��F0��\���U�-�d@�����7�SJ*z��3n��y��P����O��������� m�~�P�3|Y��ʉr#�C�<�G~�.,! ���bqx���h~0=��!ǫ�jy����l� O,�[B��~��|9��ٱ����Xly�#�i�B��g%�S��������tˋ���e���ې��\[d�t)��.+u�|1 ������#�~Oj����hS�%��i.�~X���I�H�m��0n���c�1uE�q��cF�RF�o���7� �O�ꮧ� ���ۛ{��ʛi5�rw?׌#Qn�TW��~?y$��m\�\o����%W� ?=>S�N@�� �Ʈ���R����N�)�r"C�:��:����� �����#��qb��Y�. �6[��2K����2u�Ǧ�HYR��Q�MV��� �G�$��Q+.>�����nNH��q�^��� ����q��mM��V��D�+�-�#*�U�̒ ���p욳��u:�������IB���m� ��PV@O���r[b= �� ��1U�E��_Nm�yKbN�O���U�}�the�`�|6֮P>�\2�P�V���I�D�i�P�O;�9�r�mAHG�W�S]��J*�_�G��+kP�2����Ka�Z���H�'K�x�W�MZ%�O�YD�Rc+o��?�q��Ghm��d�S�oh�\�D�|:W������UA�Qc yT�q� �����~^�H��/��#p�CZ���T�I�1�ӏT����4��"�ČZ�����}��`w�#�*,ʹ�� ��0�i��課�Om�*�da��^gJ݅{���l�e9uF#T�ֲ��̲�ٞC"�q���ߍ ոޑ�o#�XZTp����@ o�8��(jd��xw�]�,f���`~� |,s��^����f�1���t��|��m�򸄭/ctr��5s��7�9Q�4�H1꠲BB@ l9@���C�����+�wp�xu�£Yc�9��?`@#�o�mH�s2��)�=��2�.�l����jg�9$�Y�S�%*L������R�Y������7Z���,*=�䷘$�������arm�o�ϰ���UW.|�r�uf����IGw�t����Zwo��~5 ��YյhO+=8fF�)�W�7�L9lM�̘·Y���֘YLf�큹�pRF���99.A �"wz��=E\Z���'a� 2��Ǚ�#;�'}�G���*��l��^"q��+2FQ� hj��kŦ��${���ޮ-�T�٭cf�|�3#~�RJ����t��$b�(R��(����r���dx� >U b�&9,>���%E\� Ά�e�$��'�q't��*�א���ެ�b��-|d���SB�O�O��$�R+�H�)�܎�K��1m`;�J�2�Y~9��O�g8=vqD`K[�F)k�[���1m޼c��n���]s�k�z$@��)!I �x՝"v��9=�ZA=`Ɠi �:�E��)` 7��vI��}d�YI�_ �o�:ob���o ���3Q��&D&�2=�� �Ά��;>�h����y.*ⅥS������Ӭ�+q&����j|UƧ��� �}���J0��WW< ۋS�)jQR�j���Ư��rN)�Gű�4Ѷ(�S)Ǣ�8��i��W52���No˓� ۍ%�5brOn�L�;�n��\G����=�^U�dI���8$�&���h��'���+�(������cȁ߫k�l��S^���cƗjԌE�ꭔ��gF���Ȓ��@���}O���*;e�v�WV���YJ\�]X'5��ղ�k�F��b 6R�o՜m��i N�i���� >J����?��lPm�U��}>_Z&�KK��q�r��I�D�Չ~�q�3fL�:S�e>���E���-G���{L�6p�e,8��������QI��h��a�Xa��U�A'���ʂ���s�+טIjP�-��y�8ۈZ?J$��W�P� ��R�s�]��|�l(�ԓ��sƊi��o(��S0 ��Y� 8�T97.�����WiL��c�~�dxc�E|�2!�X�K�Ƙਫ਼�$((�6�~|d9u+�qd�^3�89��Y�6L�.I�����?���iI�q���9�)O/뚅����O���X��X�V��ZF[�یgQ�L��K1���RҖr@v�#��X�l��F���Нy�S�8�7�kF!A��sM���^rkp�jP�DyS$N���q�� nxҍ!U�f�!eh�i�2�m ���`�Y�I�9r�6� �TF���C}/�y�^���Η���5d�'��9A-��J��>{�_l+�`��A���[�'��յ�ϛ#w:݅�%��X�}�&�PSt�Q�"�-��\縵�/����$Ɨh�Xb�*�y��BS����;W�ջ_mc�����vt?2}1�;qS�d�d~u:2k5�2�R�~�z+|HE!)�Ǟl��7`��0�<�,�2*���Hl-��x�^����'_TV�gZA�'j� ^�2Ϊ��N7t�����?w�� �x1��f��Iz�C-Ȗ��K�^q�;���-W�DvT�7��8�Z�������� hK�(P:��Q- �8�n�Z���܃e貾�<�1�YT<�,�����"�6{ / �?�͟��|1�:�#g��W�>$����d��J��d�B�� =��jf[��%rE^��il:��B���x���Sּ�1հ��,�=��*�7 fcG��#q� �eh?��2�7�����,�!7x��6�n�LC�4x��},Geǝ�tC.��vS �F�43��zz\��;QYC,6����~;RYS/6���|2���5���v��T��i����������mlv��������&� �nRh^ejR�LG�f���? �ۉҬܦƩ��|��Ȱ����>3����!v��i�ʯ�>�v��オ�X3e���_1z�Kȗ\<������!�8���V��]��?b�k41�Re��T�q��mz��TiOʦ�Z��Xq���L������q"+���2ۨ��8}�&N7XU7Ap�d�X��~�׿��&4e�o�F��� �H�� ��O���č�c�� 懴�6���͉��+)��v;j��ݷ�� �UV�� i��� j���Y9GdÒJ1��詞�����V?h��l�� ��l�cGs�ځ�������y�Ac���� �\V3�? �� ܙg�>qH�S,�E�W�[�㺨�uch�⍸�O�}���a��>�q�6�n6� ���N6�q�� ���� N    ! 1AQaq�0@����"2BRb�#Pr���3C`��Scst���$4D���%Td��  ? � ��N����a��3��m���C���w��������xA�m�q�m��� m������$����4n淿t'��C"w��zU=D�\R+w�p+Y�T�&�պ@��ƃ��3ޯ?�Aﶂ��aŘ���@-�����Q�=���9D��ռ�ѻ@��M�V��P��܅�G5�f�Y<�u=,EC)�<�Fy'�"�&�չ�X~f��l�KԆV��?�� �W�N����=(� �;���{�r����ٌ�Y���h{�١������jW����P���Tc�����X�K�r��}���w�R��%��?���E��m�� �Y�q|����\lEE4� ��r���}�lsI�Y������f�$�=�d�yO����p�����yBj8jU�o�/�S��?�U��*������ˍ�0����� �u�q�m [�?f����a�� )Q�>����6#������� ?����0UQ����,IX���(6ڵ[�DI�MNލ�c&���υ�j\��X�R|,4��� j������T�hA�e��^���d���b<����n�� �즇�=!���3�^�`j�h�ȓr��jẕ�c�,ٞX����-����a�ﶔ���#�$��]w�O��Ӫ�1y%��L�Y<�wg#�ǝ�̗`�x�xa�t�w��»1���o7o5��>�m뭛C���Uƃߜ}�C���y1Xνm�F8�jI���]����H���ۺиE@I�i;r�8ӭ���� V�F�Շ| ��&?�3|x�B�MuS�Ge�=Ӕ�#BE5G�� ���Y!z��_e��q�р/W>|-�Ci߇�t�1ޯќd�R3�u��g�=0 5��[?�#͏��q�cf���H��{ ?u�=?�?ǯ���}Z��z���hmΔ�BFTW�����<�q� (v� ��!��z���iW]*�J�V�z��gX֧A�q�&��/w���u�gYӘa���; �i=����g:��?2�dž6�ى�k�4�>�Pxs����}������G�9� �3 ���)gG�R<>r h�$��'nc�h�P��Bj��J�ҧH� -��N1���N��?��~��}-q!=��_2hc�M��l�vY%UE�@|�v����M2�.Y[|y�"Eï��K�ZF,�ɯ?,q�?v�M 80jx�"�;�9vk�����+ ֧�� �ȺU��?�%�vcV��mA�6��Qg^M��� �A}�3�nl� QRN�l8�kkn�'�����(��M�7m9و�q���%ޟ���*h$Zk"��$�9��: �?U8�Sl��,,|ɒ��xH(ѷ����Gn�/Q�4�P��G�%��Ա8�N��!� �&�7�;���eKM7�4��9R/%����l�c>�x;������>��C�:�����t��h?aKX�bhe�ᜋ^�$�Iհ �hr7%F$�E��Fd���t��5���+�(M6�t����Ü�UU|zW�=a�Ts�Tg������dqP�Q����b'�m���1{|Y����X�N��b �P~��F^F:����k6�"�j!�� �I�r�`��1&�-$�Bevk:y���#y w��I0��x��=D�4��tU���P�ZH��ڠ底taP��6����b>�xa� ���Q�#� WeF��ŮNj�p�J* mQ�N��� �*I�-*�ȩ�F�g�3 �5��V�ʊ�ɮ�a��5F���O@{���NX��?����H�]3��1�Ri_u��������ѕ�� ����0��� F��~��:60�p�͈�S��qX#a�5>���`�o&+�<2�D����: �������ڝ�$�nP���*)�N�|y�Ej�F�5ټ�e���ihy�Z �>���k�bH�a�v��h�-#���!�Po=@k̆IEN��@��}Ll?j�O������߭�ʞ���Q|A07x���wt!xf���I2?Z��<ץ�T���cU�j��]�� 陎Ltl �}5�ϓ��$�,��O�mˊ�;�@O��jE��j(�ا,��LX���LO���Ц�90�O �.����a��nA���7������j4 ��W��_ٓ���zW�jcB������y՗+EM�)d���N�g6�y1_x��p�$Lv :��9�"z��p���ʙ$��^��JԼ*�ϭ����o���=x�Lj�6�J��u82�A�H�3$�ٕ@�=Vv�]�'�qEz�;I˼��)��=��ɯ���x �/�W(V���p�����$ �m�������u�����񶤑Oqˎ�T����r��㠚x�sr�GC��byp�G��1ߠ�w e�8�$⿄����/�M{*}��W�]˷.�CK\�ުx���/$�WP w���r� |i���&�}�{�X� �>��$-��l���?-z���g����lΆ���(F���h�vS*���b���߲ڡn,|)mrH[���a�3�ר�[1��3o_�U�3�TC�$��(�=�)0�kgP���� ��u�^=��4 �WYCҸ:��vQ�ר�X�à��tk�m,�t*��^�,�}D*� �"(�I��9R����>`�`��[~Q]�#af��i6l��8���6�:,s�s�N6�j"�A4���IuQ��6E,�GnH��zS�HO�uk�5$�I�4��ؤ�Q9�@��C����wp �BGv[]�u�Ov��� 0I4���\��y�����Q�Ѹ��~>Z��8�T��a��q�ޣ;z��a���/��S��I:�ܫ_�|������>=Z����8:�S��U�I�J��"IY���8%b8���H��:�QO�6�;7�I�S��J��ҌAά3��>c���E+&jf$eC+�z�;��V����� �r���ʺ������my�e���aQ�f&��6�ND ��.:��NT�vm�<- u���ǝ\MvZY�N�NT��-A�>jr!S��n�O 1�3�Ns�%�3D@���`������ܟ 1�^c<���� �a�ɽ�̲�Xë#�w�|y�cW�=�9I*H8�p�^(4���՗�k��arOcW�tO�\�ƍR��8����'�K���I�Q�����?5�>[�}��yU�ײ -h��=��% q�ThG�2�)���"ו3]�!kB��*p�FDl�A���,�eEi�H�f�Ps�����5�H:�Փ~�H�0Dت�D�I����h�F3�������c��2���E��9�H��5�zԑ�ʚ�i�X�=:m�xg�hd(�v����׊�9iS��O��d@0ڽ���:�p�5�h-��t�&���X�q�ӕ,��ie�|���7A�2���O%P��E��htj��Y1��w�Ѓ!����  ���� ࢽ��My�7�\�a�@�ţ�J �4�Ȼ�F�@o�̒?4�wx��)��]�P��~�����u�����5�����7X ��9��^ܩ�U;Iꭆ 5 �������eK2�7(�{|��Y׎ �V��\"���Z�1� Z�����}��(�Ǝ"�1S���_�vE30>���p;� ΝD��%x�W�?W?v����o�^V�i�d��r[��/&>�~`�9Wh��y�;���R�� � ;;ɮT��?����r$�g1�K����A��C��c��K��l:�'��3 c�ﳯ*"t8�~l��)���m��+U,z��`( �>yJ�?����h>��]��v��ЍG*�{`��;y]��I�T� ;c��NU�fo¾h���/$���|NS���1�S�"�H��V���T���4��uhǜ�]�v;���5�͠x��'C\�SBpl���h}�N����� A�Bx���%��ޭ�l��/����T��w�ʽ]D�=����K���ž�r㻠l4�S�O?=�k �M:� ��c�C�a�#ha���)�ѐxc�s���gP�iG�� {+���x���Q���I= �� z��ԫ+ �8"�k�ñ�j=|����c ��y��CF��/ ��*9ж�h{ �?4�o� ��k�m�Q�N�x��;�Y��4膚�a�w?�6�> e]�����Q�r�:����g�,i"�����ԩA� *M�<�G��b�if��l^M��5� �Ҩ�{����6J��ZJ�����P�*�����Y���ݛu�_4�9�I8�7���������,^ToR���m4�H��?�N�S�ѕw��/S��甍�@�9H�S�T��t�ƻ���ʒU��*{Xs�@����f��� ��֒Li�K{H�w^���������Ϥm�tq���s� ���ք��f:��o~s��g�r��ט� �S�ѱC�e]�x���a��) ���(b-$(�j>�7q�B?ӕ�F��hV25r[7 Y� }L�R��}����*sg+��x�r�2�U=�*'WS��ZDW]�WǞ�<��叓���{�$�9Ou4��y�90-�1�'*D`�c�^o?(�9��u���ݐ��'PI&� f�Jݮ�������:wS����jfP1F:X �H�9dԯ�� �˝[�_54 �}*;@�ܨ�� ð�yn�T���?�ןd�#���4rG�ͨ��H�1�|-#���Mr�S3��G�3�����)�.᧏3v�z֑��r����$G"�`j �1t��x0<Ɔ�Wh6�y�6��,œ�Ga��gA����y��b��)� �h�D��ß�_�m��ü �gG;��e�v��ݝ�nQ� ��C����-�*��o���y�a��M��I�>�<���]obD��"�:���G�A��-\%LT�8���c�)��+y76���o�Q�#*{�(F�⽕�y����=���rW�\p���۩�c���A���^e6��K������ʐ�cVf5$�'->���ՉN"���F�"�UQ@�f��Gb~��#�&�M=��8�ט�JNu9��D��[̤�s�o�~��� ��� G��9T�tW^g5y$b��Y'��س�Ǵ�=��U-2 #�MC�t(�i� �lj�@Q 5�̣i�*�O����s�x�K�f��}\��M{E�V�{�υ��Ƈ�����);�H����I��fe�Lȣr�2��>��W� I�Ȃ6������i��k�� �5�YOxȺ����>��Y�f5'��|��H+��98pj�n�.O�y�������jY��~��i�w'������l�;�s�2��Y��:'lg�ꥴ)o#'Sa�a�K��Z� �m��}�`169�n���"���x��I ��*+� }F<��cГ���F�P�������ֹ*�PqX�x۩��,� ��N�� �4<-����%����:��7����W���u�`����� $�?�I��&����o��o��`v�>��P��"��l���4��5'�Z�gE���8���?��[�X�7(��.Q�-��*���ތL@̲����v��.5���[��=�t\+�CNܛ��,g�SQnH����}*F�G16���&:�t��4ُ"A��̣��$�b �|����#rs��a�����T�� ]�<�j��B S�('$�ɻ� �wP;�/�n��?�ݜ��x�F��yUn�~mL*-�������Xf�wd^�a�}��f�,=t�׵i�.2/wpN�Ep8�OР���•��R�FJ� 55TZ��T �ɭ�<��]��/�0�r�@�f��V��V����Nz�G��^���7hZi����k��3�,kN�e|�vg�1{9]_i��X5y7� 8e]�U����'�-2,���e"����]ot�I��Y_��n�(JҼ��1�O ]bXc���Nu�No��pS���Q_���_�?i�~�x h5d'�(qw52] ��'ޤ�q��o1�R!���`ywy�A4u���h<קy���\[~�4�\ X�Wt/� 6�����n�F�a8��f���z �3$�t(���q��q�x��^�XWeN'p<-v�!�{�(>ӽDP7��ո0�y)�e$ٕv�Ih'Q�EA�m*�H��RI��=:��� ���4牢) �%_iN�ݧ�l]� �Nt���G��H�L��� ɱ�g<���1V�,�J~�ٹ�"K��Q�� 9�HS�9�?@��k����r�;we݁�]I�!{ �@�G�[�"��`���J:�n]�{�cA�E����V��ʆ���#��U9�6����j�#Y�m\��q�e4h�B�7��C�������d<�?J����1g:ٳ���=Y���D�p�ц� ׈ǔ��1�]26؜oS�'��9�V�FVu�P�h�9�xc�oq�X��p�o�5��Ա5$�9W�V(�[Ak�aY錎qf;�'�[�|���b�6�Ck��)��#a#a˙��8���=äh�4��2��C��4tm^ �n'c� ��]GQ$[Wҿ��i���vN�{Fu ��1�gx��1┷���N�m��{j-,��x�� Ūm�ЧS�[�s���Gna���䑴�� x�p 8<������97�Q���ϴ�v�aϚG��Rt�Һ׈�f^\r��WH�JU�7Z���y)�vg=����n��4�_)y��D'y�6�]�c�5̪ �\� �PF�k����&�c;��cq�$~T�7j ���nç]�<�g ":�to�t}�159�<�/�8������m�b�K#g'I'.W����� 6��I/��>v��\�MN��g���m�A�yQL�4u�Lj�j9��#44�t��l^�}L����n��R��!��t��±]��r��h6ٍ>�yҏ�N��fU�� ���� Fm@�8}�/u��jb9������he:A�y�ծw��GpΧh�5����l}�3p468��)U��d��c����;Us/�֔�YX�1�O2��uq�s��`hwg�r~�{ R��mhN��؎*q 42�*th��>�#���E����#��Hv�O����q�}����� 6�e��\�,Wk�#���X��b>��p}�դ��3���T5��†��6��[��@ �P�y*n��|'f�֧>�lư΂�̺����SU�'*�q�p�_S�����M�� '��c�6��� ��m�� ySʨ;M��r���Ƌ�m�Kxo,���Gm�P��A�G�:��i��w�9�}M(�^�V��$ǒ�ѽ�9���|���� �a����J�SQ�a���r�B;����}���ٻ֢�2�%U���c�#�g���N�a�ݕ�'�v�[�OY'��3L�3�;,p�]@�S��{ls��X�'���c�jw� k'a�.��}�}&�� �dP�*�bK=ɍ!����;3n�gΊU�ߴmt�'*{,=SzfD� A��ko~�G�aoq�_mi}#�m�������P�Xhύ��� �mxǍ�΂���巿zf��Q���c���|kc�����?���W��Y�$���_Lv����l߶��c���`?����l�j�ݲˏ!V��6����U�Ђ(A���4y)H���p�Z_�x��>���e�� R��$�/�`^'3qˏ�-&Q�=?��CFVR �D�fV�9��{�8g�������n�h�(P"��6�[�D���< E�����~0<@�`�G�6����Hг�cc�� �c�K.5��D��d�B���`?�XQ��2��ٿyqo&+�1^� DW�0�ꊩ���G�#��Q�nL3��c���������/��x ��1�1 [y�x�პCW��C�c�UĨ80�m�e�4.{�m��u���I=��f�����0QRls9���f���������9���~f�����Ǩ��a�"@�8���ȁ�Q����#c�ic������G��$���G���r/$W�(��W���V�"��m�7�[m�A�m����bo��D� j����۳� l���^�k�h׽����� ��#� iXn�v��eT�k�a�^Y�4�BN�� ĕ�� 0    !01@Q"2AaPq3BR������ ? � ��@4�Q�����T3,���㺠�W�[=JK�Ϟ���2�r^7��vc�:�9 �E�ߴ�w�S#d���Ix��u��:��Hp��9E!�� V 2;73|F��9Y���*ʬ�F��D����u&���y؟��^EA��A��(ɩ���^��GV:ݜDy�`��Jr29ܾ�㝉��[���E;Fzx��YG��U�e�Y�C���� ����v-tx����I�sם�Ę�q��Eb�+P\ :>�i�C'�;�����k|z�رn�y]�#ǿb��Q��������w�����(�r|ӹs��[�D��2v-%��@;�8<a���[\o[ϧw��I!��*0�krs)�[�J9^��ʜ��p1)� "��/_>��o��<1����A�E�y^�C��`�x1'ܣn�p��s`l���fQ��):�l����b>�Me�jH^?�kl3(�z:���1ŠK&?Q�~�{�ٺ�h�y���/�[��V�|6��}�KbX����mn[-��7�5q�94�������dm���c^���h� X��5��<�eޘ>G���-�}�دB�ޟ� ��|�rt�M��V+�]�c?�-#ڛ��^ǂ}���Lkr���O��u�>�-D�ry� D?:ޞ�U��ǜ�7�V��?瓮�"�#���r��չģVR;�n���/_� ؉v�ݶe5d�b9��/O��009�G���5n�W����JpA�*�r9�>�1��.[t���s�F���nQ� V 77R�]�ɫ8����_0<՜�IF�u(v��4��F�k�3��E)��N:��yڮe��P�`�1}�$WS��J�SQ�N�j �ٺ��޵�#l���ј(�5=��5�lǏmoW�v-�1����v,W�mn��߀$x�<����v�j(����c]��@#��1������Ǔ���o'��u+����;G�#�޸��v-lη��/(`i⣍Pm^� ��ԯ̾9Z��F��������n��1��� ��]�[��)�'������ :�֪�W��FC����� �B9،!?���]��V��A�Վ�M��b�w��G F>_DȬ0¤�#�QR�[V��kz���m�w�"��9ZG�7'[��=�Q����j8R?�zf�\a�=��O�U����*oB�A�|G���2�54 �p��.w7� �� ��&������ξxGHp� B%��$g�����t�Џ򤵍z���HN�u�Я�-�'4��0�� ;_�� 3     !01"@AQa2Pq#3BR������ ? � �ʩca��en��^��8���<�u#��m*08r��y�N"�<�Ѳ0��@\�p��� �����Kv�D��J8�Fҽ� �f�Y��-m�ybX�NP����}�!*8t(�OqѢ��Q�wW�K��ZD��Δ^e��!� ��B�K��p~�����e*l}z#9ң�k���q#�Ft�o��S�R����-�w�!�S���Ӥß|M�l޶V��!eˈ�8Y���c�ЮM2��tk���� ������J�fS����Ö*i/2�����n]�k�\���|4yX�8��U�P.���Ы[���l��@"�t�<������5�lF���vU�����W��W��;�b�cД^6[#7@vU�xgZv��F�6��Q,K�v��� �+Ъ��n��Ǣ��Ft���8��0��c�@�!�Zq s�v�t�;#](B��-�nῃ~���3g������5�J�%���O������n�kB�ĺ�.r��+���#�N$?�q�/�s�6��p��a����a��J/��M�8��6�ܰ"�*������ɗud"\w���aT(����[��F��U՛����RT�b���n�*��6���O��SJ�.�ij<�v�MT��R\c��5l�sZB>F��<7�;EA��{��E���Ö��1U/�#��d1�a�n.1ě����0�ʾR�h��|�R��Ao�3�m3 ��%�� ���28Q� ��y��φ���H�To�7�lW>����#i`�q���c����a��� �m,B�-j����݋�'mR1Ήt�>��V��p���s�0IbI�C.���1R�ea�����]H�6�������� ��4B>��o��](��$B���m�����a�!=� �?�B� K�Ǿ+�Ծ"�n���K��*��+��[T#�{ E�J�S����Q�����s�5�:�U�\wĐ�f�3����܆&�)��� �I���Ԇw��E T�lrTf6Q|R�h:��[K�� �z��c֧�G�C��%\��_�a �84��HcO�bi��ؖV��7H �)*ģK~Xhչ0��4?�0��� �E<���}3���#���u�?�� ��|g�S�6ꊤ�|�I#Hڛ� �ա��w�X��9��7���Ŀ%�SL��y6č��|�F�a 8���b� �$�sק�h���b9RAu7�˨p�Č�_\*w��묦��F ����4D~�f����|(�"m���NK��i�S�>�$d7SlA��/�²����SL��|6N�}���S�˯���g��]6��; �#�.��<���q'Q�1|KQ$�����񛩶"�$r�b:���N8�w@��8$�� �AjfG|~�9F ���Y��ʺ��Bwؒ������M:I岎�G��`s�YV5����6��A �b:�W���G�q%l�����F��H���7�������Fsv7� �k�� 403WebShell
403Webshell
Server IP : 127.0.0.1  /  Your IP : 10.100.1.254
Web Server : Apache/2.4.58 (Win64) OpenSSL/3.1.3 PHP/8.0.30
System : Windows NT WIZC-EXTRANET 10.0 build 19045 (Windows 10) AMD64
User : SYSTEM ( 0)
PHP Version : 8.0.30
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : OFF  |  Perl : OFF  |  Python : OFF  |  Sudo : OFF  |  Pkexec : OFF
Directory :  /Strawberry/c/include/postgresql/server/lib/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /Strawberry/c/include/postgresql/server/lib/ilist.h
/*-------------------------------------------------------------------------
 *
 * ilist.h
 *		integrated/inline doubly- and singly-linked lists
 *
 * These list types are useful when there are only a predetermined set of
 * lists that an object could be in.  List links are embedded directly into
 * the objects, and thus no extra memory management overhead is required.
 * (Of course, if only a small proportion of existing objects are in a list,
 * the link fields in the remainder would be wasted space.  But usually,
 * it saves space to not have separately-allocated list nodes.)
 *
 * The doubly-linked list comes in 2 forms.  dlist_head defines a head of a
 * doubly-linked list of dlist_nodes, whereas dclist_head defines the head of
 * a doubly-linked list of dlist_nodes with an additional 'count' field to
 * keep track of how many items are contained within the given list.  For
 * simplicity, dlist_head and dclist_head share the same node and iterator
 * types.  The functions to manipulate a dlist_head always have a name
 * starting with "dlist", whereas functions to manipulate a dclist_head have a
 * name starting with "dclist".  dclist_head comes with an additional function
 * (dclist_count) to return the number of entries in the list.  dclists are
 * able to store a maximum of PG_UINT32_MAX elements.  It is up to the caller
 * to ensure no more than this many items are added to a dclist.
 *
 * None of the functions here allocate any memory; they just manipulate
 * externally managed memory.  With the exception doubly-linked count lists
 * providing the ability to obtain the number of items in the list, the APIs
 * for singly and both doubly linked lists are identical as far as
 * capabilities of both allow.
 *
 * Each list has a list header, which exists even when the list is empty.
 * An empty singly-linked list has a NULL pointer in its header.
 *
 * For both doubly-linked list types, there are two valid ways to represent an
 * empty list.  The head's 'next' pointer can either be NULL or the head's
 * 'next' and 'prev' links can both point back to the list head (circular).
 * (If a dlist is modified and then all its elements are deleted, it will be
 * in the circular state.).  We prefer circular dlists because there are some
 * operations that can be done without branches (and thus faster) on lists
 * that use circular representation.  However, it is often convenient to
 * initialize list headers to zeroes rather than setting them up with an
 * explicit initialization function, so we also allow the NULL initialization.
 *
 * EXAMPLES
 *
 * Here's a simple example demonstrating how this can be used.  Let's assume
 * we want to store information about the tables contained in a database.
 *
 * #include "lib/ilist.h"
 *
 * // Define struct for the databases including a list header that will be
 * // used to access the nodes in the table list later on.
 * typedef struct my_database
 * {
 *		char	   *datname;
 *		dlist_head	tables;
 *		// ...
 * } my_database;
 *
 * // Define struct for the tables.  Note the list_node element which stores
 * // prev/next list links.  The list_node element need not be first.
 * typedef struct my_table
 * {
 *		char	   *tablename;
 *		dlist_node	list_node;
 *		perm_t		permissions;
 *		// ...
 * } my_table;
 *
 * // create a database
 * my_database *db = create_database();
 *
 * // and add a few tables to its table list
 * dlist_push_head(&db->tables, &create_table(db, "a")->list_node);
 * ...
 * dlist_push_head(&db->tables, &create_table(db, "b")->list_node);
 *
 *
 * To iterate over the table list, we allocate an iterator variable and use
 * a specialized looping construct.  Inside a dlist_foreach, the iterator's
 * 'cur' field can be used to access the current element.  iter.cur points to
 * a 'dlist_node', but most of the time what we want is the actual table
 * information; dlist_container() gives us that, like so:
 *
 * dlist_iter	iter;
 * dlist_foreach(iter, &db->tables)
 * {
 *		my_table   *tbl = dlist_container(my_table, list_node, iter.cur);
 *		printf("we have a table: %s in database %s\n",
 *			   tbl->tablename, db->datname);
 * }
 *
 *
 * While a simple iteration is useful, we sometimes also want to manipulate
 * the list while iterating.  There is a different iterator element and looping
 * construct for that.  Suppose we want to delete tables that meet a certain
 * criterion:
 *
 * dlist_mutable_iter miter;
 * dlist_foreach_modify(miter, &db->tables)
 * {
 *		my_table   *tbl = dlist_container(my_table, list_node, miter.cur);
 *
 *		if (!tbl->to_be_deleted)
 *			continue;		// don't touch this one
 *
 *		// unlink the current table from the linked list
 *		dlist_delete(miter.cur);
 *		// as these lists never manage memory, we can still access the table
 *		// after it's been unlinked
 *		drop_table(db, tbl);
 * }
 *
 *
 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * IDENTIFICATION
 *		src/include/lib/ilist.h
 *-------------------------------------------------------------------------
 */
#ifndef ILIST_H
#define ILIST_H

/*
 * Enable for extra debugging. This is rather expensive, so it's not enabled by
 * default even when USE_ASSERT_CHECKING.
 */
/* #define ILIST_DEBUG */

/*
 * Node of a doubly linked list.
 *
 * Embed this in structs that need to be part of a doubly linked list.
 */
typedef struct dlist_node dlist_node;
struct dlist_node
{
	dlist_node *prev;
	dlist_node *next;
};

/*
 * Head of a doubly linked list.
 *
 * Non-empty lists are internally circularly linked.  Circular lists have the
 * advantage of not needing any branches in the most common list manipulations.
 * An empty list can also be represented as a pair of NULL pointers, making
 * initialization easier.
 */
typedef struct dlist_head
{
	/*
	 * head.next either points to the first element of the list; to &head if
	 * it's a circular empty list; or to NULL if empty and not circular.
	 *
	 * head.prev either points to the last element of the list; to &head if
	 * it's a circular empty list; or to NULL if empty and not circular.
	 */
	dlist_node	head;
} dlist_head;


/*
 * Doubly linked list iterator type for dlist_head and dclist_head types.
 *
 * Used as state in dlist_foreach() and dlist_reverse_foreach() (and the
 * dclist variant thereof).
 *
 * To get the current element of the iteration use the 'cur' member.
 *
 * Iterations using this are *not* allowed to change the list while iterating!
 *
 * NB: We use an extra "end" field here to avoid multiple evaluations of
 * arguments in the dlist_foreach() and dclist_foreach() macros.
 */
typedef struct dlist_iter
{
	dlist_node *cur;			/* current element */
	dlist_node *end;			/* last node we'll iterate to */
} dlist_iter;

/*
 * Doubly linked list iterator for both dlist_head and dclist_head types.
 * This iterator type allows some modifications while iterating.
 *
 * Used as state in dlist_foreach_modify() and dclist_foreach_modify().
 *
 * To get the current element of the iteration use the 'cur' member.
 *
 * Iterations using this are only allowed to change the list at the current
 * point of iteration. It is fine to delete the current node, but it is *not*
 * fine to insert or delete adjacent nodes.
 *
 * NB: We need a separate type for mutable iterations so that we can store
 * the 'next' node of the current node in case it gets deleted or modified.
 */
typedef struct dlist_mutable_iter
{
	dlist_node *cur;			/* current element */
	dlist_node *next;			/* next node we'll iterate to */
	dlist_node *end;			/* last node we'll iterate to */
} dlist_mutable_iter;

/*
 * Head of a doubly linked list with a count of the number of items
 *
 * This internally makes use of a dlist to implement the actual list.  When
 * items are added or removed from the list the count is updated to reflect
 * the current number of items in the list.
 */
typedef struct dclist_head
{
	dlist_head	dlist;			/* the actual list header */
	uint32		count;			/* the number of items in the list */
} dclist_head;

/*
 * Node of a singly linked list.
 *
 * Embed this in structs that need to be part of a singly linked list.
 */
typedef struct slist_node slist_node;
struct slist_node
{
	slist_node *next;
};

/*
 * Head of a singly linked list.
 *
 * Singly linked lists are not circularly linked, in contrast to doubly linked
 * lists; we just set head.next to NULL if empty.  This doesn't incur any
 * additional branches in the usual manipulations.
 */
typedef struct slist_head
{
	slist_node	head;
} slist_head;

/*
 * Singly linked list iterator.
 *
 * Used as state in slist_foreach(). To get the current element of the
 * iteration use the 'cur' member.
 *
 * It's allowed to modify the list while iterating, with the exception of
 * deleting the iterator's current node; deletion of that node requires
 * care if the iteration is to be continued afterward.  (Doing so and also
 * deleting or inserting adjacent list elements might misbehave; also, if
 * the user frees the current node's storage, continuing the iteration is
 * not safe.)
 *
 * NB: this wouldn't really need to be an extra struct, we could use an
 * slist_node * directly. We prefer a separate type for consistency.
 */
typedef struct slist_iter
{
	slist_node *cur;
} slist_iter;

/*
 * Singly linked list iterator allowing some modifications while iterating.
 *
 * Used as state in slist_foreach_modify(). To get the current element of the
 * iteration use the 'cur' member.
 *
 * The only list modification allowed while iterating is to remove the current
 * node via slist_delete_current() (*not* slist_delete()).  Insertion or
 * deletion of nodes adjacent to the current node would misbehave.
 */
typedef struct slist_mutable_iter
{
	slist_node *cur;			/* current element */
	slist_node *next;			/* next node we'll iterate to */
	slist_node *prev;			/* prev node, for deletions */
} slist_mutable_iter;


/* Static initializers */
#define DLIST_STATIC_INIT(name) {{&(name).head, &(name).head}}
#define DCLIST_STATIC_INIT(name) {{{&(name).dlist.head, &(name).dlist.head}}, 0}
#define SLIST_STATIC_INIT(name) {{NULL}}


/* Prototypes for functions too big to be inline */

/* Caution: this is O(n); consider using slist_delete_current() instead */
extern void slist_delete(slist_head *head, const slist_node *node);

#ifdef ILIST_DEBUG
extern void dlist_member_check(const dlist_head *head, const dlist_node *node);
extern void dlist_check(const dlist_head *head);
extern void slist_check(const slist_head *head);
#else
/*
 * These seemingly useless casts to void are here to keep the compiler quiet
 * about the argument being unused in many functions in a non-debug compile,
 * in which functions the only point of passing the list head pointer is to be
 * able to run these checks.
 */
#define dlist_member_check(head, node) ((void) (head))
#define dlist_check(head)	((void) (head))
#define slist_check(head)	((void) (head))
#endif							/* ILIST_DEBUG */

/* doubly linked list implementation */

/*
 * Initialize a doubly linked list.
 * Previous state will be thrown away without any cleanup.
 */
static inline void
dlist_init(dlist_head *head)
{
	head->head.next = head->head.prev = &head->head;
}

/*
 * Initialize a doubly linked list element.
 *
 * This is only needed when dlist_node_is_detached() may be needed.
 */
static inline void
dlist_node_init(dlist_node *node)
{
	node->next = node->prev = NULL;
}

/*
 * Is the list empty?
 *
 * An empty list has either its first 'next' pointer set to NULL, or to itself.
 */
static inline bool
dlist_is_empty(const dlist_head *head)
{
	dlist_check(head);

	return head->head.next == NULL || head->head.next == &(head->head);
}

/*
 * Insert a node at the beginning of the list.
 */
static inline void
dlist_push_head(dlist_head *head, dlist_node *node)
{
	if (head->head.next == NULL)	/* convert NULL header to circular */
		dlist_init(head);

	node->next = head->head.next;
	node->prev = &head->head;
	node->next->prev = node;
	head->head.next = node;

	dlist_check(head);
}

/*
 * Insert a node at the end of the list.
 */
static inline void
dlist_push_tail(dlist_head *head, dlist_node *node)
{
	if (head->head.next == NULL)	/* convert NULL header to circular */
		dlist_init(head);

	node->next = &head->head;
	node->prev = head->head.prev;
	node->prev->next = node;
	head->head.prev = node;

	dlist_check(head);
}

/*
 * Insert a node after another *in the same list*
 */
static inline void
dlist_insert_after(dlist_node *after, dlist_node *node)
{
	node->prev = after;
	node->next = after->next;
	after->next = node;
	node->next->prev = node;
}

/*
 * Insert a node before another *in the same list*
 */
static inline void
dlist_insert_before(dlist_node *before, dlist_node *node)
{
	node->prev = before->prev;
	node->next = before;
	before->prev = node;
	node->prev->next = node;
}

/*
 * Delete 'node' from its list (it must be in one).
 */
static inline void
dlist_delete(dlist_node *node)
{
	node->prev->next = node->next;
	node->next->prev = node->prev;
}

/*
 * Like dlist_delete(), but also sets next/prev to NULL to signal not being in
 * a list.
 */
static inline void
dlist_delete_thoroughly(dlist_node *node)
{
	node->prev->next = node->next;
	node->next->prev = node->prev;
	node->next = NULL;
	node->prev = NULL;
}

/*
 * Same as dlist_delete, but performs checks in ILIST_DEBUG builds to ensure
 * that 'node' belongs to 'head'.
 */
static inline void
dlist_delete_from(dlist_head *head, dlist_node *node)
{
	dlist_member_check(head, node);
	dlist_delete(node);
}

/*
 * Like dlist_delete_from, but also sets next/prev to NULL to signal not
 * being in a list.
 */
static inline void
dlist_delete_from_thoroughly(dlist_head *head, dlist_node *node)
{
	dlist_member_check(head, node);
	dlist_delete_thoroughly(node);
}

/*
 * Remove and return the first node from a list (there must be one).
 */
static inline dlist_node *
dlist_pop_head_node(dlist_head *head)
{
	dlist_node *node;

	Assert(!dlist_is_empty(head));
	node = head->head.next;
	dlist_delete(node);
	return node;
}

/*
 * Move element from its current position in the list to the head position in
 * the same list.
 *
 * Undefined behaviour if 'node' is not already part of the list.
 */
static inline void
dlist_move_head(dlist_head *head, dlist_node *node)
{
	/* fast path if it's already at the head */
	if (head->head.next == node)
		return;

	dlist_delete(node);
	dlist_push_head(head, node);

	dlist_check(head);
}

/*
 * Move element from its current position in the list to the tail position in
 * the same list.
 *
 * Undefined behaviour if 'node' is not already part of the list.
 */
static inline void
dlist_move_tail(dlist_head *head, dlist_node *node)
{
	/* fast path if it's already at the tail */
	if (head->head.prev == node)
		return;

	dlist_delete(node);
	dlist_push_tail(head, node);

	dlist_check(head);
}

/*
 * Check whether 'node' has a following node.
 * Caution: unreliable if 'node' is not in the list.
 */
static inline bool
dlist_has_next(const dlist_head *head, const dlist_node *node)
{
	return node->next != &head->head;
}

/*
 * Check whether 'node' has a preceding node.
 * Caution: unreliable if 'node' is not in the list.
 */
static inline bool
dlist_has_prev(const dlist_head *head, const dlist_node *node)
{
	return node->prev != &head->head;
}

/*
 * Check if node is detached. A node is only detached if it either has been
 * initialized with dlist_init_node(), or deleted with
 * dlist_delete_thoroughly() / dlist_delete_from_thoroughly() /
 * dclist_delete_from_thoroughly().
 */
static inline bool
dlist_node_is_detached(const dlist_node *node)
{
	Assert((node->next == NULL && node->prev == NULL) ||
		   (node->next != NULL && node->prev != NULL));

	return node->next == NULL;
}

/*
 * Return the next node in the list (there must be one).
 */
static inline dlist_node *
dlist_next_node(dlist_head *head, dlist_node *node)
{
	Assert(dlist_has_next(head, node));
	return node->next;
}

/*
 * Return previous node in the list (there must be one).
 */
static inline dlist_node *
dlist_prev_node(dlist_head *head, dlist_node *node)
{
	Assert(dlist_has_prev(head, node));
	return node->prev;
}

/* internal support function to get address of head element's struct */
static inline void *
dlist_head_element_off(dlist_head *head, size_t off)
{
	Assert(!dlist_is_empty(head));
	return (char *) head->head.next - off;
}

/*
 * Return the first node in the list (there must be one).
 */
static inline dlist_node *
dlist_head_node(dlist_head *head)
{
	return (dlist_node *) dlist_head_element_off(head, 0);
}

/* internal support function to get address of tail element's struct */
static inline void *
dlist_tail_element_off(dlist_head *head, size_t off)
{
	Assert(!dlist_is_empty(head));
	return (char *) head->head.prev - off;
}

/*
 * Return the last node in the list (there must be one).
 */
static inline dlist_node *
dlist_tail_node(dlist_head *head)
{
	return (dlist_node *) dlist_tail_element_off(head, 0);
}

/*
 * Return the containing struct of 'type' where 'membername' is the dlist_node
 * pointed at by 'ptr'.
 *
 * This is used to convert a dlist_node * back to its containing struct.
 */
#define dlist_container(type, membername, ptr)								\
	(AssertVariableIsOfTypeMacro(ptr, dlist_node *),						\
	 AssertVariableIsOfTypeMacro(((type *) NULL)->membername, dlist_node),	\
	 ((type *) ((char *) (ptr) - offsetof(type, membername))))

/*
 * Return the address of the first element in the list.
 *
 * The list must not be empty.
 */
#define dlist_head_element(type, membername, lhead)							\
	(AssertVariableIsOfTypeMacro(((type *) NULL)->membername, dlist_node),	\
	 (type *) dlist_head_element_off(lhead, offsetof(type, membername)))

/*
 * Return the address of the last element in the list.
 *
 * The list must not be empty.
 */
#define dlist_tail_element(type, membername, lhead)							\
	(AssertVariableIsOfTypeMacro(((type *) NULL)->membername, dlist_node),	\
	 ((type *) dlist_tail_element_off(lhead, offsetof(type, membername))))

/*
 * Iterate through the list pointed at by 'lhead' storing the state in 'iter'.
 *
 * Access the current element with iter.cur.
 *
 * It is *not* allowed to manipulate the list during iteration.
 */
#define dlist_foreach(iter, lhead)											\
	for (AssertVariableIsOfTypeMacro(iter, dlist_iter),						\
		 AssertVariableIsOfTypeMacro(lhead, dlist_head *),					\
		 (iter).end = &(lhead)->head,										\
		 (iter).cur = (iter).end->next ? (iter).end->next : (iter).end;		\
		 (iter).cur != (iter).end;											\
		 (iter).cur = (iter).cur->next)

/*
 * Iterate through the list pointed at by 'lhead' storing the state in 'iter'.
 *
 * Access the current element with iter.cur.
 *
 * Iterations using this are only allowed to change the list at the current
 * point of iteration. It is fine to delete the current node, but it is *not*
 * fine to insert or delete adjacent nodes.
 */
#define dlist_foreach_modify(iter, lhead)									\
	for (AssertVariableIsOfTypeMacro(iter, dlist_mutable_iter),				\
		 AssertVariableIsOfTypeMacro(lhead, dlist_head *),					\
		 (iter).end = &(lhead)->head,										\
		 (iter).cur = (iter).end->next ? (iter).end->next : (iter).end,		\
		 (iter).next = (iter).cur->next;									\
		 (iter).cur != (iter).end;											\
		 (iter).cur = (iter).next, (iter).next = (iter).cur->next)

/*
 * Iterate through the list in reverse order.
 *
 * It is *not* allowed to manipulate the list during iteration.
 */
#define dlist_reverse_foreach(iter, lhead)									\
	for (AssertVariableIsOfTypeMacro(iter, dlist_iter),						\
		 AssertVariableIsOfTypeMacro(lhead, dlist_head *),					\
		 (iter).end = &(lhead)->head,										\
		 (iter).cur = (iter).end->prev ? (iter).end->prev : (iter).end;		\
		 (iter).cur != (iter).end;											\
		 (iter).cur = (iter).cur->prev)

/* doubly-linked count list implementation */

/*
 * dclist_init
 *		Initialize a doubly linked count list.
 *
 * Previous state will be thrown away without any cleanup.
 */
static inline void
dclist_init(dclist_head *head)
{
	dlist_init(&head->dlist);
	head->count = 0;
}

/*
 * dclist_is_empty
 *		Returns true if the list is empty, otherwise false.
 */
static inline bool
dclist_is_empty(const dclist_head *head)
{
	Assert(dlist_is_empty(&head->dlist) == (head->count == 0));
	return (head->count == 0);
}

/*
 * dclist_push_head
 *		Insert a node at the beginning of the list.
 */
static inline void
dclist_push_head(dclist_head *head, dlist_node *node)
{
	if (head->dlist.head.next == NULL)	/* convert NULL header to circular */
		dclist_init(head);

	dlist_push_head(&head->dlist, node);
	head->count++;

	Assert(head->count > 0);	/* count overflow check */
}

/*
 * dclist_push_tail
 *		Insert a node at the end of the list.
 */
static inline void
dclist_push_tail(dclist_head *head, dlist_node *node)
{
	if (head->dlist.head.next == NULL)	/* convert NULL header to circular */
		dclist_init(head);

	dlist_push_tail(&head->dlist, node);
	head->count++;

	Assert(head->count > 0);	/* count overflow check */
}

/*
 * dclist_insert_after
 *		Insert a node after another *in the same list*
 *
 * Caution: 'after' must be a member of 'head'.
 */
static inline void
dclist_insert_after(dclist_head *head, dlist_node *after, dlist_node *node)
{
	dlist_member_check(&head->dlist, after);
	Assert(head->count > 0);	/* must be at least 1 already */

	dlist_insert_after(after, node);
	head->count++;

	Assert(head->count > 0);	/* count overflow check */
}

/*
 * dclist_insert_before
 *		Insert a node before another *in the same list*
 *
 * Caution: 'before' must be a member of 'head'.
 */
static inline void
dclist_insert_before(dclist_head *head, dlist_node *before, dlist_node *node)
{
	dlist_member_check(&head->dlist, before);
	Assert(head->count > 0);	/* must be at least 1 already */

	dlist_insert_before(before, node);
	head->count++;

	Assert(head->count > 0);	/* count overflow check */
}

/*
 * dclist_delete_from
 *		Deletes 'node' from 'head'.
 *
 * Caution: 'node' must be a member of 'head'.
 */
static inline void
dclist_delete_from(dclist_head *head, dlist_node *node)
{
	Assert(head->count > 0);

	dlist_delete_from(&head->dlist, node);
	head->count--;
}

/*
 * Like dclist_delete_from(), but also sets next/prev to NULL to signal not
 * being in a list.
 */
static inline void
dclist_delete_from_thoroughly(dclist_head *head, dlist_node *node)
{
	Assert(head->count > 0);

	dlist_delete_from_thoroughly(&head->dlist, node);
	head->count--;
}

/*
 * dclist_pop_head_node
 *		Remove and return the first node from a list (there must be one).
 */
static inline dlist_node *
dclist_pop_head_node(dclist_head *head)
{
	dlist_node *node;

	Assert(head->count > 0);

	node = dlist_pop_head_node(&head->dlist);
	head->count--;
	return node;
}

/*
 * dclist_move_head
 *		Move 'node' from its current position in the list to the head position
 *		in 'head'.
 *
 * Caution: 'node' must be a member of 'head'.
 */
static inline void
dclist_move_head(dclist_head *head, dlist_node *node)
{
	dlist_member_check(&head->dlist, node);
	Assert(head->count > 0);

	dlist_move_head(&head->dlist, node);
}

/*
 * dclist_move_tail
 *		Move 'node' from its current position in the list to the tail position
 *		in 'head'.
 *
 * Caution: 'node' must be a member of 'head'.
 */
static inline void
dclist_move_tail(dclist_head *head, dlist_node *node)
{
	dlist_member_check(&head->dlist, node);
	Assert(head->count > 0);

	dlist_move_tail(&head->dlist, node);
}

/*
 * dclist_has_next
 *		Check whether 'node' has a following node.
 *
 * Caution: 'node' must be a member of 'head'.
 */
static inline bool
dclist_has_next(const dclist_head *head, const dlist_node *node)
{
	dlist_member_check(&head->dlist, node);
	Assert(head->count > 0);

	return dlist_has_next(&head->dlist, node);
}

/*
 * dclist_has_prev
 *		Check whether 'node' has a preceding node.
 *
 * Caution: 'node' must be a member of 'head'.
 */
static inline bool
dclist_has_prev(const dclist_head *head, const dlist_node *node)
{
	dlist_member_check(&head->dlist, node);
	Assert(head->count > 0);

	return dlist_has_prev(&head->dlist, node);
}

/*
 * dclist_next_node
 *		Return the next node in the list (there must be one).
 */
static inline dlist_node *
dclist_next_node(dclist_head *head, dlist_node *node)
{
	Assert(head->count > 0);

	return dlist_next_node(&head->dlist, node);
}

/*
 * dclist_prev_node
 *		Return the prev node in the list (there must be one).
 */
static inline dlist_node *
dclist_prev_node(dclist_head *head, dlist_node *node)
{
	Assert(head->count > 0);

	return dlist_prev_node(&head->dlist, node);
}

/* internal support function to get address of head element's struct */
static inline void *
dclist_head_element_off(dclist_head *head, size_t off)
{
	Assert(!dclist_is_empty(head));

	return (char *) head->dlist.head.next - off;
}

/*
 * dclist_head_node
 *		Return the first node in the list (there must be one).
 */
static inline dlist_node *
dclist_head_node(dclist_head *head)
{
	Assert(head->count > 0);

	return (dlist_node *) dlist_head_element_off(&head->dlist, 0);
}

/* internal support function to get address of tail element's struct */
static inline void *
dclist_tail_element_off(dclist_head *head, size_t off)
{
	Assert(!dclist_is_empty(head));

	return (char *) head->dlist.head.prev - off;
}

/*
 * Return the last node in the list (there must be one).
 */
static inline dlist_node *
dclist_tail_node(dclist_head *head)
{
	Assert(head->count > 0);

	return (dlist_node *) dlist_tail_element_off(&head->dlist, 0);
}

/*
 * dclist_count
 *		Returns the stored number of entries in 'head'
 */
static inline uint32
dclist_count(const dclist_head *head)
{
	Assert(dlist_is_empty(&head->dlist) == (head->count == 0));

	return head->count;
}

/*
 * Return the containing struct of 'type' where 'membername' is the dlist_node
 * pointed at by 'ptr'.
 *
 * This is used to convert a dlist_node * back to its containing struct.
 *
 * Note: This is effectively just the same as dlist_container, so reuse that.
 */
#define dclist_container(type, membername, ptr) \
		dlist_container(type, membername, ptr)

 /*
  * Return the address of the first element in the list.
  *
  * The list must not be empty.
  */
#define dclist_head_element(type, membername, lhead)							\
	(AssertVariableIsOfTypeMacro(((type *) NULL)->membername, dlist_node),	\
	 (type *) dclist_head_element_off(lhead, offsetof(type, membername)))

 /*
  * Return the address of the last element in the list.
  *
  * The list must not be empty.
  */
#define dclist_tail_element(type, membername, lhead)							\
	(AssertVariableIsOfTypeMacro(((type *) NULL)->membername, dlist_node),	\
	 ((type *) dclist_tail_element_off(lhead, offsetof(type, membername))))


/* Iterators for dclists */
#define dclist_foreach(iter, lhead) \
	dlist_foreach(iter, &((lhead)->dlist))

#define dclist_foreach_modify(iter, lhead) \
	dlist_foreach_modify(iter, &((lhead)->dlist))

#define dclist_reverse_foreach(iter, lhead) \
	dlist_reverse_foreach(iter, &((lhead)->dlist))

/* singly linked list implementation */

/*
 * Initialize a singly linked list.
 * Previous state will be thrown away without any cleanup.
 */
static inline void
slist_init(slist_head *head)
{
	head->head.next = NULL;
}

/*
 * Is the list empty?
 */
static inline bool
slist_is_empty(const slist_head *head)
{
	slist_check(head);

	return head->head.next == NULL;
}

/*
 * Insert a node at the beginning of the list.
 */
static inline void
slist_push_head(slist_head *head, slist_node *node)
{
	node->next = head->head.next;
	head->head.next = node;

	slist_check(head);
}

/*
 * Insert a node after another *in the same list*
 */
static inline void
slist_insert_after(slist_node *after, slist_node *node)
{
	node->next = after->next;
	after->next = node;
}

/*
 * Remove and return the first node from a list (there must be one).
 */
static inline slist_node *
slist_pop_head_node(slist_head *head)
{
	slist_node *node;

	Assert(!slist_is_empty(head));
	node = head->head.next;
	head->head.next = node->next;
	slist_check(head);
	return node;
}

/*
 * Check whether 'node' has a following node.
 */
static inline bool
slist_has_next(const slist_head *head, const slist_node *node)
{
	slist_check(head);

	return node->next != NULL;
}

/*
 * Return the next node in the list (there must be one).
 */
static inline slist_node *
slist_next_node(slist_head *head, slist_node *node)
{
	Assert(slist_has_next(head, node));
	return node->next;
}

/* internal support function to get address of head element's struct */
static inline void *
slist_head_element_off(slist_head *head, size_t off)
{
	Assert(!slist_is_empty(head));
	return (char *) head->head.next - off;
}

/*
 * Return the first node in the list (there must be one).
 */
static inline slist_node *
slist_head_node(slist_head *head)
{
	return (slist_node *) slist_head_element_off(head, 0);
}

/*
 * Delete the list element the iterator currently points to.
 *
 * Caution: this modifies iter->cur, so don't use that again in the current
 * loop iteration.
 */
static inline void
slist_delete_current(slist_mutable_iter *iter)
{
	/*
	 * Update previous element's forward link.  If the iteration is at the
	 * first list element, iter->prev will point to the list header's "head"
	 * field, so we don't need a special case for that.
	 */
	iter->prev->next = iter->next;

	/*
	 * Reset cur to prev, so that prev will continue to point to the prior
	 * valid list element after slist_foreach_modify() advances to the next.
	 */
	iter->cur = iter->prev;
}

/*
 * Return the containing struct of 'type' where 'membername' is the slist_node
 * pointed at by 'ptr'.
 *
 * This is used to convert a slist_node * back to its containing struct.
 */
#define slist_container(type, membername, ptr)								\
	(AssertVariableIsOfTypeMacro(ptr, slist_node *),						\
	 AssertVariableIsOfTypeMacro(((type *) NULL)->membername, slist_node),	\
	 ((type *) ((char *) (ptr) - offsetof(type, membername))))

/*
 * Return the address of the first element in the list.
 *
 * The list must not be empty.
 */
#define slist_head_element(type, membername, lhead)							\
	(AssertVariableIsOfTypeMacro(((type *) NULL)->membername, slist_node),	\
	 (type *) slist_head_element_off(lhead, offsetof(type, membername)))

/*
 * Iterate through the list pointed at by 'lhead' storing the state in 'iter'.
 *
 * Access the current element with iter.cur.
 *
 * It's allowed to modify the list while iterating, with the exception of
 * deleting the iterator's current node; deletion of that node requires
 * care if the iteration is to be continued afterward.  (Doing so and also
 * deleting or inserting adjacent list elements might misbehave; also, if
 * the user frees the current node's storage, continuing the iteration is
 * not safe.)
 */
#define slist_foreach(iter, lhead)											\
	for (AssertVariableIsOfTypeMacro(iter, slist_iter),						\
		 AssertVariableIsOfTypeMacro(lhead, slist_head *),					\
		 (iter).cur = (lhead)->head.next;									\
		 (iter).cur != NULL;												\
		 (iter).cur = (iter).cur->next)

/*
 * Iterate through the list pointed at by 'lhead' storing the state in 'iter'.
 *
 * Access the current element with iter.cur.
 *
 * The only list modification allowed while iterating is to remove the current
 * node via slist_delete_current() (*not* slist_delete()).  Insertion or
 * deletion of nodes adjacent to the current node would misbehave.
 */
#define slist_foreach_modify(iter, lhead)									\
	for (AssertVariableIsOfTypeMacro(iter, slist_mutable_iter),				\
		 AssertVariableIsOfTypeMacro(lhead, slist_head *),					\
		 (iter).prev = &(lhead)->head,										\
		 (iter).cur = (iter).prev->next,									\
		 (iter).next = (iter).cur ? (iter).cur->next : NULL;				\
		 (iter).cur != NULL;												\
		 (iter).prev = (iter).cur,											\
		 (iter).cur = (iter).next,											\
		 (iter).next = (iter).next ? (iter).next->next : NULL)

#endif							/* ILIST_H */

Youez - 2016 - github.com/yon3zu
LinuXploit