�����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 : 185.170.199.237  /  Your IP : 216.73.216.167
Web Server : LiteSpeed
System : Linux lt-bnk-web922.main-hosting.eu 4.18.0-553.70.1.lve.el8.x86_64 #1 SMP Wed Aug 20 14:42:18 UTC 2025 x86_64
User : u970350538 ( 970350538)
PHP Version : 7.4.33
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : OFF  |  Python : ON  |  Sudo : OFF  |  Pkexec : OFF
Directory :  /opt/golang/1.19.4/src/cmd/trace/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /opt/golang/1.19.4/src/cmd/trace/trace.go
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"cmd/internal/traceviewer"
	"embed"
	"encoding/json"
	"fmt"
	"internal/trace"
	"io"
	"log"
	"math"
	"net/http"
	"runtime/debug"
	"sort"
	"strconv"
	"strings"
	"time"
)

//go:embed static/trace_viewer_full.html static/webcomponents.min.js
var staticContent embed.FS

func init() {
	http.HandleFunc("/trace", httpTrace)
	http.HandleFunc("/jsontrace", httpJsonTrace)
	http.Handle("/static/", http.FileServer(http.FS(staticContent)))
}

// httpTrace serves either whole trace (goid==0) or trace for goid goroutine.
func httpTrace(w http.ResponseWriter, r *http.Request) {
	_, err := parseTrace()
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	if err := r.ParseForm(); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	html := strings.ReplaceAll(templTrace, "{{PARAMS}}", r.Form.Encode())
	w.Write([]byte(html))

}

// https://chromium.googlesource.com/catapult/+/9508452e18f130c98499cb4c4f1e1efaedee8962/tracing/docs/embedding-trace-viewer.md
// This is almost verbatim copy of https://chromium-review.googlesource.com/c/catapult/+/2062938/2/tracing/bin/index.html
var templTrace = `
<html>
<head>
<script src="/static/webcomponents.min.js"></script>
<script>
'use strict';

function onTraceViewerImportFail() {
  document.addEventListener('DOMContentLoaded', function() {
    document.body.textContent =
    '/static/trace_viewer_full.html is missing. File a bug in https://golang.org/issue';
  });
}
</script>

<link rel="import" href="/static/trace_viewer_full.html"
      onerror="onTraceViewerImportFail(event)">

<style type="text/css">
  html, body {
    box-sizing: border-box;
    overflow: hidden;
    margin: 0px;
    padding: 0;
    width: 100%;
    height: 100%;
  }
  #trace-viewer {
    width: 100%;
    height: 100%;
  }
  #trace-viewer:focus {
    outline: none;
  }
</style>
<script>
'use strict';
(function() {
  var viewer;
  var url;
  var model;

  function load() {
    var req = new XMLHttpRequest();
    var isBinary = /[.]gz$/.test(url) || /[.]zip$/.test(url);
    req.overrideMimeType('text/plain; charset=x-user-defined');
    req.open('GET', url, true);
    if (isBinary)
      req.responseType = 'arraybuffer';

    req.onreadystatechange = function(event) {
      if (req.readyState !== 4)
        return;

      window.setTimeout(function() {
        if (req.status === 200)
          onResult(isBinary ? req.response : req.responseText);
        else
          onResultFail(req.status);
      }, 0);
    };
    req.send(null);
  }

  function onResultFail(err) {
    var overlay = new tr.ui.b.Overlay();
    overlay.textContent = err + ': ' + url + ' could not be loaded';
    overlay.title = 'Failed to fetch data';
    overlay.visible = true;
  }

  function onResult(result) {
    model = new tr.Model();
    var opts = new tr.importer.ImportOptions();
    opts.shiftWorldToZero = false;
    var i = new tr.importer.Import(model, opts);
    var p = i.importTracesWithProgressDialog([result]);
    p.then(onModelLoaded, onImportFail);
  }

  function onModelLoaded() {
    viewer.model = model;
    viewer.viewTitle = "trace";

    if (!model || model.bounds.isEmpty)
      return;
    var sel = window.location.hash.substr(1);
    if (sel === '')
      return;
    var parts = sel.split(':');
    var range = new (tr.b.Range || tr.b.math.Range)();
    range.addValue(parseFloat(parts[0]));
    range.addValue(parseFloat(parts[1]));
    viewer.trackView.viewport.interestRange.set(range);
  }

  function onImportFail(err) {
    var overlay = new tr.ui.b.Overlay();
    overlay.textContent = tr.b.normalizeException(err).message;
    overlay.title = 'Import error';
    overlay.visible = true;
  }

  document.addEventListener('WebComponentsReady', function() {
    var container = document.createElement('track-view-container');
    container.id = 'track_view_container';

    viewer = document.createElement('tr-ui-timeline-view');
    viewer.track_view_container = container;
    Polymer.dom(viewer).appendChild(container);

    viewer.id = 'trace-viewer';
    viewer.globalMode = true;
    Polymer.dom(document.body).appendChild(viewer);

    url = '/jsontrace?{{PARAMS}}';
    load();
  });
}());
</script>
</head>
<body>
</body>
</html>
`

// httpJsonTrace serves json trace, requested from within templTrace HTML.
func httpJsonTrace(w http.ResponseWriter, r *http.Request) {
	defer debug.FreeOSMemory()
	defer reportMemoryUsage("after httpJsonTrace")
	// This is an AJAX handler, so instead of http.Error we use log.Printf to log errors.
	res, err := parseTrace()
	if err != nil {
		log.Printf("failed to parse trace: %v", err)
		return
	}

	params := &traceParams{
		parsed:  res,
		endTime: math.MaxInt64,
	}

	if goids := r.FormValue("goid"); goids != "" {
		// If goid argument is present, we are rendering a trace for this particular goroutine.
		goid, err := strconv.ParseUint(goids, 10, 64)
		if err != nil {
			log.Printf("failed to parse goid parameter %q: %v", goids, err)
			return
		}
		analyzeGoroutines(res.Events)
		g, ok := gs[goid]
		if !ok {
			log.Printf("failed to find goroutine %d", goid)
			return
		}
		params.mode = modeGoroutineOriented
		params.startTime = g.StartTime
		if g.EndTime != 0 {
			params.endTime = g.EndTime
		} else { // The goroutine didn't end.
			params.endTime = lastTimestamp()
		}
		params.maing = goid
		params.gs = trace.RelatedGoroutines(res.Events, goid)
	} else if taskids := r.FormValue("taskid"); taskids != "" {
		taskid, err := strconv.ParseUint(taskids, 10, 64)
		if err != nil {
			log.Printf("failed to parse taskid parameter %q: %v", taskids, err)
			return
		}
		annotRes, _ := analyzeAnnotations()
		task, ok := annotRes.tasks[taskid]
		if !ok || len(task.events) == 0 {
			log.Printf("failed to find task with id %d", taskid)
			return
		}
		goid := task.events[0].G
		params.mode = modeGoroutineOriented | modeTaskOriented
		params.startTime = task.firstTimestamp() - 1
		params.endTime = task.lastTimestamp() + 1
		params.maing = goid
		params.tasks = task.descendants()
		gs := map[uint64]bool{}
		for _, t := range params.tasks {
			// find only directly involved goroutines
			for k, v := range t.RelatedGoroutines(res.Events, 0) {
				gs[k] = v
			}
		}
		params.gs = gs
	} else if taskids := r.FormValue("focustask"); taskids != "" {
		taskid, err := strconv.ParseUint(taskids, 10, 64)
		if err != nil {
			log.Printf("failed to parse focustask parameter %q: %v", taskids, err)
			return
		}
		annotRes, _ := analyzeAnnotations()
		task, ok := annotRes.tasks[taskid]
		if !ok || len(task.events) == 0 {
			log.Printf("failed to find task with id %d", taskid)
			return
		}
		params.mode = modeTaskOriented
		params.startTime = task.firstTimestamp() - 1
		params.endTime = task.lastTimestamp() + 1
		params.tasks = task.descendants()
	}

	start := int64(0)
	end := int64(math.MaxInt64)
	if startStr, endStr := r.FormValue("start"), r.FormValue("end"); startStr != "" && endStr != "" {
		// If start/end arguments are present, we are rendering a range of the trace.
		start, err = strconv.ParseInt(startStr, 10, 64)
		if err != nil {
			log.Printf("failed to parse start parameter %q: %v", startStr, err)
			return
		}
		end, err = strconv.ParseInt(endStr, 10, 64)
		if err != nil {
			log.Printf("failed to parse end parameter %q: %v", endStr, err)
			return
		}
	}

	c := viewerDataTraceConsumer(w, start, end)
	if err := generateTrace(params, c); err != nil {
		log.Printf("failed to generate trace: %v", err)
		return
	}
}

type Range struct {
	Name      string
	Start     int
	End       int
	StartTime int64
	EndTime   int64
}

func (r Range) URL() string {
	return fmt.Sprintf("/trace?start=%d&end=%d", r.Start, r.End)
}

// splitTrace splits the trace into a number of ranges,
// each resulting in approx 100MB of json output
// (trace viewer can hardly handle more).
func splitTrace(res trace.ParseResult) []Range {
	params := &traceParams{
		parsed:  res,
		endTime: math.MaxInt64,
	}
	s, c := splittingTraceConsumer(100 << 20) // 100M
	if err := generateTrace(params, c); err != nil {
		dief("%v\n", err)
	}
	return s.Ranges
}

type splitter struct {
	Ranges []Range
}

func splittingTraceConsumer(max int) (*splitter, traceConsumer) {
	type eventSz struct {
		Time float64
		Sz   int
	}

	var (
		data = traceviewer.Data{Frames: make(map[string]traceviewer.Frame)}

		sizes []eventSz
		cw    countingWriter
	)

	s := new(splitter)

	return s, traceConsumer{
		consumeTimeUnit: func(unit string) {
			data.TimeUnit = unit
		},
		consumeViewerEvent: func(v *traceviewer.Event, required bool) {
			if required {
				// Store required events inside data
				// so flush can include them in the required
				// part of the trace.
				data.Events = append(data.Events, v)
				return
			}
			enc := json.NewEncoder(&cw)
			enc.Encode(v)
			sizes = append(sizes, eventSz{v.Time, cw.size + 1}) // +1 for ",".
			cw.size = 0
		},
		consumeViewerFrame: func(k string, v traceviewer.Frame) {
			data.Frames[k] = v
		},
		flush: func() {
			// Calculate size of the mandatory part of the trace.
			// This includes stack traces and thread names.
			cw.size = 0
			enc := json.NewEncoder(&cw)
			enc.Encode(data)
			minSize := cw.size

			// Then calculate size of each individual event
			// and group them into ranges.
			sum := minSize
			start := 0
			for i, ev := range sizes {
				if sum+ev.Sz > max {
					startTime := time.Duration(sizes[start].Time * 1000)
					endTime := time.Duration(ev.Time * 1000)
					ranges = append(ranges, Range{
						Name:      fmt.Sprintf("%v-%v", startTime, endTime),
						Start:     start,
						End:       i + 1,
						StartTime: int64(startTime),
						EndTime:   int64(endTime),
					})
					start = i + 1
					sum = minSize
				} else {
					sum += ev.Sz + 1
				}
			}
			if len(ranges) <= 1 {
				s.Ranges = nil
				return
			}

			if end := len(sizes) - 1; start < end {
				ranges = append(ranges, Range{
					Name:      fmt.Sprintf("%v-%v", time.Duration(sizes[start].Time*1000), time.Duration(sizes[end].Time*1000)),
					Start:     start,
					End:       end,
					StartTime: int64(sizes[start].Time * 1000),
					EndTime:   int64(sizes[end].Time * 1000),
				})
			}
			s.Ranges = ranges
		},
	}
}

type countingWriter struct {
	size int
}

func (cw *countingWriter) Write(data []byte) (int, error) {
	cw.size += len(data)
	return len(data), nil
}

type traceParams struct {
	parsed    trace.ParseResult
	mode      traceviewMode
	startTime int64
	endTime   int64
	maing     uint64          // for goroutine-oriented view, place this goroutine on the top row
	gs        map[uint64]bool // Goroutines to be displayed for goroutine-oriented or task-oriented view
	tasks     []*taskDesc     // Tasks to be displayed. tasks[0] is the top-most task
}

type traceviewMode uint

const (
	modeGoroutineOriented traceviewMode = 1 << iota
	modeTaskOriented
)

type traceContext struct {
	*traceParams
	consumer  traceConsumer
	frameTree frameNode
	frameSeq  int
	arrowSeq  uint64
	gcount    uint64

	heapStats, prevHeapStats     heapStats
	threadStats, prevThreadStats threadStats
	gstates, prevGstates         [gStateCount]int64

	regionID int // last emitted region id. incremented in each emitRegion call.
}

type heapStats struct {
	heapAlloc uint64
	nextGC    uint64
}

type threadStats struct {
	insyscallRuntime int64 // system goroutine in syscall
	insyscall        int64 // user goroutine in syscall
	prunning         int64 // thread running P
}

type frameNode struct {
	id       int
	children map[uint64]frameNode
}

type gState int

const (
	gDead gState = iota
	gRunnable
	gRunning
	gWaiting
	gWaitingGC

	gStateCount
)

type gInfo struct {
	state      gState // current state
	name       string // name chosen for this goroutine at first EvGoStart
	isSystemG  bool
	start      *trace.Event // most recent EvGoStart
	markAssist *trace.Event // if non-nil, the mark assist currently running.
}

type NameArg struct {
	Name string `json:"name"`
}

type TaskArg struct {
	ID     uint64 `json:"id"`
	StartG uint64 `json:"start_g,omitempty"`
	EndG   uint64 `json:"end_g,omitempty"`
}

type RegionArg struct {
	TaskID uint64 `json:"taskid,omitempty"`
}

type SortIndexArg struct {
	Index int `json:"sort_index"`
}

type traceConsumer struct {
	consumeTimeUnit    func(unit string)
	consumeViewerEvent func(v *traceviewer.Event, required bool)
	consumeViewerFrame func(key string, f traceviewer.Frame)
	flush              func()
}

const (
	procsSection = 0 // where Goroutines or per-P timelines are presented.
	statsSection = 1 // where counters are presented.
	tasksSection = 2 // where Task hierarchy & timeline is presented.
)

// generateTrace generates json trace for trace-viewer:
// https://github.com/google/trace-viewer
// Trace format is described at:
// https://docs.google.com/document/d/1CvAClvFfyA5R-PhYUmn5OOQtYMH4h6I0nSsKchNAySU/view
// If mode==goroutineMode, generate trace for goroutine goid, otherwise whole trace.
// startTime, endTime determine part of the trace that we are interested in.
// gset restricts goroutines that are included in the resulting trace.
func generateTrace(params *traceParams, consumer traceConsumer) error {
	defer consumer.flush()

	ctx := &traceContext{traceParams: params}
	ctx.frameTree.children = make(map[uint64]frameNode)
	ctx.consumer = consumer

	ctx.consumer.consumeTimeUnit("ns")
	maxProc := 0
	ginfos := make(map[uint64]*gInfo)
	stacks := params.parsed.Stacks

	getGInfo := func(g uint64) *gInfo {
		info, ok := ginfos[g]
		if !ok {
			info = &gInfo{}
			ginfos[g] = info
		}
		return info
	}

	// Since we make many calls to setGState, we record a sticky
	// error in setGStateErr and check it after every event.
	var setGStateErr error
	setGState := func(ev *trace.Event, g uint64, oldState, newState gState) {
		info := getGInfo(g)
		if oldState == gWaiting && info.state == gWaitingGC {
			// For checking, gWaiting counts as any gWaiting*.
			oldState = info.state
		}
		if info.state != oldState && setGStateErr == nil {
			setGStateErr = fmt.Errorf("expected G %d to be in state %d, but got state %d", g, oldState, newState)
		}
		ctx.gstates[info.state]--
		ctx.gstates[newState]++
		info.state = newState
	}

	for _, ev := range ctx.parsed.Events {
		// Handle state transitions before we filter out events.
		switch ev.Type {
		case trace.EvGoStart, trace.EvGoStartLabel:
			setGState(ev, ev.G, gRunnable, gRunning)
			info := getGInfo(ev.G)
			info.start = ev
		case trace.EvProcStart:
			ctx.threadStats.prunning++
		case trace.EvProcStop:
			ctx.threadStats.prunning--
		case trace.EvGoCreate:
			newG := ev.Args[0]
			info := getGInfo(newG)
			if info.name != "" {
				return fmt.Errorf("duplicate go create event for go id=%d detected at offset %d", newG, ev.Off)
			}

			stk, ok := stacks[ev.Args[1]]
			if !ok || len(stk) == 0 {
				return fmt.Errorf("invalid go create event: missing stack information for go id=%d at offset %d", newG, ev.Off)
			}

			fname := stk[0].Fn
			info.name = fmt.Sprintf("G%v %s", newG, fname)
			info.isSystemG = trace.IsSystemGoroutine(fname)

			ctx.gcount++
			setGState(ev, newG, gDead, gRunnable)
		case trace.EvGoEnd:
			ctx.gcount--
			setGState(ev, ev.G, gRunning, gDead)
		case trace.EvGoUnblock:
			setGState(ev, ev.Args[0], gWaiting, gRunnable)
		case trace.EvGoSysExit:
			setGState(ev, ev.G, gWaiting, gRunnable)
			if getGInfo(ev.G).isSystemG {
				ctx.threadStats.insyscallRuntime--
			} else {
				ctx.threadStats.insyscall--
			}
		case trace.EvGoSysBlock:
			setGState(ev, ev.G, gRunning, gWaiting)
			if getGInfo(ev.G).isSystemG {
				ctx.threadStats.insyscallRuntime++
			} else {
				ctx.threadStats.insyscall++
			}
		case trace.EvGoSched, trace.EvGoPreempt:
			setGState(ev, ev.G, gRunning, gRunnable)
		case trace.EvGoStop,
			trace.EvGoSleep, trace.EvGoBlock, trace.EvGoBlockSend, trace.EvGoBlockRecv,
			trace.EvGoBlockSelect, trace.EvGoBlockSync, trace.EvGoBlockCond, trace.EvGoBlockNet:
			setGState(ev, ev.G, gRunning, gWaiting)
		case trace.EvGoBlockGC:
			setGState(ev, ev.G, gRunning, gWaitingGC)
		case trace.EvGCMarkAssistStart:
			getGInfo(ev.G).markAssist = ev
		case trace.EvGCMarkAssistDone:
			getGInfo(ev.G).markAssist = nil
		case trace.EvGoWaiting:
			setGState(ev, ev.G, gRunnable, gWaiting)
		case trace.EvGoInSyscall:
			// Cancel out the effect of EvGoCreate at the beginning.
			setGState(ev, ev.G, gRunnable, gWaiting)
			if getGInfo(ev.G).isSystemG {
				ctx.threadStats.insyscallRuntime++
			} else {
				ctx.threadStats.insyscall++
			}
		case trace.EvHeapAlloc:
			ctx.heapStats.heapAlloc = ev.Args[0]
		case trace.EvHeapGoal:
			ctx.heapStats.nextGC = ev.Args[0]
		}
		if setGStateErr != nil {
			return setGStateErr
		}
		if ctx.gstates[gRunnable] < 0 || ctx.gstates[gRunning] < 0 || ctx.threadStats.insyscall < 0 || ctx.threadStats.insyscallRuntime < 0 {
			return fmt.Errorf("invalid state after processing %v: runnable=%d running=%d insyscall=%d insyscallRuntime=%d", ev, ctx.gstates[gRunnable], ctx.gstates[gRunning], ctx.threadStats.insyscall, ctx.threadStats.insyscallRuntime)
		}

		// Ignore events that are from uninteresting goroutines
		// or outside of the interesting timeframe.
		if ctx.gs != nil && ev.P < trace.FakeP && !ctx.gs[ev.G] {
			continue
		}
		if !withinTimeRange(ev, ctx.startTime, ctx.endTime) {
			continue
		}

		if ev.P < trace.FakeP && ev.P > maxProc {
			maxProc = ev.P
		}

		// Emit trace objects.
		switch ev.Type {
		case trace.EvProcStart:
			if ctx.mode&modeGoroutineOriented != 0 {
				continue
			}
			ctx.emitInstant(ev, "proc start", "")
		case trace.EvProcStop:
			if ctx.mode&modeGoroutineOriented != 0 {
				continue
			}
			ctx.emitInstant(ev, "proc stop", "")
		case trace.EvGCStart:
			ctx.emitSlice(ev, "GC")
		case trace.EvGCDone:
		case trace.EvGCSTWStart:
			if ctx.mode&modeGoroutineOriented != 0 {
				continue
			}
			ctx.emitSlice(ev, fmt.Sprintf("STW (%s)", ev.SArgs[0]))
		case trace.EvGCSTWDone:
		case trace.EvGCMarkAssistStart:
			// Mark assists can continue past preemptions, so truncate to the
			// whichever comes first. We'll synthesize another slice if
			// necessary in EvGoStart.
			markFinish := ev.Link
			goFinish := getGInfo(ev.G).start.Link
			fakeMarkStart := *ev
			text := "MARK ASSIST"
			if markFinish == nil || markFinish.Ts > goFinish.Ts {
				fakeMarkStart.Link = goFinish
				text = "MARK ASSIST (unfinished)"
			}
			ctx.emitSlice(&fakeMarkStart, text)
		case trace.EvGCSweepStart:
			slice := ctx.makeSlice(ev, "SWEEP")
			if done := ev.Link; done != nil && done.Args[0] != 0 {
				slice.Arg = struct {
					Swept     uint64 `json:"Swept bytes"`
					Reclaimed uint64 `json:"Reclaimed bytes"`
				}{done.Args[0], done.Args[1]}
			}
			ctx.emit(slice)
		case trace.EvGoStart, trace.EvGoStartLabel:
			info := getGInfo(ev.G)
			if ev.Type == trace.EvGoStartLabel {
				ctx.emitSlice(ev, ev.SArgs[0])
			} else {
				ctx.emitSlice(ev, info.name)
			}
			if info.markAssist != nil {
				// If we're in a mark assist, synthesize a new slice, ending
				// either when the mark assist ends or when we're descheduled.
				markFinish := info.markAssist.Link
				goFinish := ev.Link
				fakeMarkStart := *ev
				text := "MARK ASSIST (resumed, unfinished)"
				if markFinish != nil && markFinish.Ts < goFinish.Ts {
					fakeMarkStart.Link = markFinish
					text = "MARK ASSIST (resumed)"
				}
				ctx.emitSlice(&fakeMarkStart, text)
			}
		case trace.EvGoCreate:
			ctx.emitArrow(ev, "go")
		case trace.EvGoUnblock:
			ctx.emitArrow(ev, "unblock")
		case trace.EvGoSysCall:
			ctx.emitInstant(ev, "syscall", "")
		case trace.EvGoSysExit:
			ctx.emitArrow(ev, "sysexit")
		case trace.EvUserLog:
			ctx.emitInstant(ev, formatUserLog(ev), "user event")
		case trace.EvUserTaskCreate:
			ctx.emitInstant(ev, "task start", "user event")
		case trace.EvUserTaskEnd:
			ctx.emitInstant(ev, "task end", "user event")
		case trace.EvCPUSample:
			if ev.P >= 0 {
				// only show in this UI when there's an associated P
				ctx.emitInstant(ev, "CPU profile sample", "")
			}
		}
		// Emit any counter updates.
		ctx.emitThreadCounters(ev)
		ctx.emitHeapCounters(ev)
		ctx.emitGoroutineCounters(ev)
	}

	ctx.emitSectionFooter(statsSection, "STATS", 0)

	if ctx.mode&modeTaskOriented != 0 {
		ctx.emitSectionFooter(tasksSection, "TASKS", 1)
	}

	if ctx.mode&modeGoroutineOriented != 0 {
		ctx.emitSectionFooter(procsSection, "G", 2)
	} else {
		ctx.emitSectionFooter(procsSection, "PROCS", 2)
	}

	ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: procsSection, TID: trace.GCP, Arg: &NameArg{"GC"}})
	ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: trace.GCP, Arg: &SortIndexArg{-6}})

	ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: procsSection, TID: trace.NetpollP, Arg: &NameArg{"Network"}})
	ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: trace.NetpollP, Arg: &SortIndexArg{-5}})

	ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: procsSection, TID: trace.TimerP, Arg: &NameArg{"Timers"}})
	ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: trace.TimerP, Arg: &SortIndexArg{-4}})

	ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: procsSection, TID: trace.SyscallP, Arg: &NameArg{"Syscalls"}})
	ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: trace.SyscallP, Arg: &SortIndexArg{-3}})

	// Display rows for Ps if we are in the default trace view mode (not goroutine-oriented presentation)
	if ctx.mode&modeGoroutineOriented == 0 {
		for i := 0; i <= maxProc; i++ {
			ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: procsSection, TID: uint64(i), Arg: &NameArg{fmt.Sprintf("Proc %v", i)}})
			ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: uint64(i), Arg: &SortIndexArg{i}})
		}
	}

	// Display task and its regions if we are in task-oriented presentation mode.
	if ctx.mode&modeTaskOriented != 0 {
		// sort tasks based on the task start time.
		sortedTask := make([]*taskDesc, 0, len(ctx.tasks))
		for _, task := range ctx.tasks {
			sortedTask = append(sortedTask, task)
		}
		sort.SliceStable(sortedTask, func(i, j int) bool {
			ti, tj := sortedTask[i], sortedTask[j]
			if ti.firstTimestamp() == tj.firstTimestamp() {
				return ti.lastTimestamp() < tj.lastTimestamp()
			}
			return ti.firstTimestamp() < tj.firstTimestamp()
		})

		for i, task := range sortedTask {
			ctx.emitTask(task, i)

			// If we are in goroutine-oriented mode, we draw regions.
			// TODO(hyangah): add this for task/P-oriented mode (i.e., focustask view) too.
			if ctx.mode&modeGoroutineOriented != 0 {
				for _, s := range task.regions {
					ctx.emitRegion(s)
				}
			}
		}
	}

	// Display goroutine rows if we are either in goroutine-oriented mode.
	if ctx.mode&modeGoroutineOriented != 0 {
		for k, v := range ginfos {
			if !ctx.gs[k] {
				continue
			}
			ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: procsSection, TID: k, Arg: &NameArg{v.name}})
		}
		// Row for the main goroutine (maing)
		ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: ctx.maing, Arg: &SortIndexArg{-2}})
		// Row for GC or global state (specified with G=0)
		ctx.emitFooter(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: procsSection, TID: 0, Arg: &SortIndexArg{-1}})
	}

	return nil
}

func (ctx *traceContext) emit(e *traceviewer.Event) {
	ctx.consumer.consumeViewerEvent(e, false)
}

func (ctx *traceContext) emitFooter(e *traceviewer.Event) {
	ctx.consumer.consumeViewerEvent(e, true)
}
func (ctx *traceContext) emitSectionFooter(sectionID uint64, name string, priority int) {
	ctx.emitFooter(&traceviewer.Event{Name: "process_name", Phase: "M", PID: sectionID, Arg: &NameArg{name}})
	ctx.emitFooter(&traceviewer.Event{Name: "process_sort_index", Phase: "M", PID: sectionID, Arg: &SortIndexArg{priority}})
}

func (ctx *traceContext) time(ev *trace.Event) float64 {
	// Trace viewer wants timestamps in microseconds.
	return float64(ev.Ts) / 1000
}

func withinTimeRange(ev *trace.Event, s, e int64) bool {
	if evEnd := ev.Link; evEnd != nil {
		return ev.Ts <= e && evEnd.Ts >= s
	}
	return ev.Ts >= s && ev.Ts <= e
}

func tsWithinRange(ts, s, e int64) bool {
	return s <= ts && ts <= e
}

func (ctx *traceContext) proc(ev *trace.Event) uint64 {
	if ctx.mode&modeGoroutineOriented != 0 && ev.P < trace.FakeP {
		return ev.G
	} else {
		return uint64(ev.P)
	}
}

func (ctx *traceContext) emitSlice(ev *trace.Event, name string) {
	ctx.emit(ctx.makeSlice(ev, name))
}

func (ctx *traceContext) makeSlice(ev *trace.Event, name string) *traceviewer.Event {
	// If ViewerEvent.Dur is not a positive value,
	// trace viewer handles it as a non-terminating time interval.
	// Avoid it by setting the field with a small value.
	durationUsec := ctx.time(ev.Link) - ctx.time(ev)
	if ev.Link.Ts-ev.Ts <= 0 {
		durationUsec = 0.0001 // 0.1 nanoseconds
	}
	sl := &traceviewer.Event{
		Name:     name,
		Phase:    "X",
		Time:     ctx.time(ev),
		Dur:      durationUsec,
		TID:      ctx.proc(ev),
		Stack:    ctx.stack(ev.Stk),
		EndStack: ctx.stack(ev.Link.Stk),
	}

	// grey out non-overlapping events if the event is not a global event (ev.G == 0)
	if ctx.mode&modeTaskOriented != 0 && ev.G != 0 {
		// include P information.
		if t := ev.Type; t == trace.EvGoStart || t == trace.EvGoStartLabel {
			type Arg struct {
				P int
			}
			sl.Arg = &Arg{P: ev.P}
		}
		// grey out non-overlapping events.
		overlapping := false
		for _, task := range ctx.tasks {
			if _, overlapped := task.overlappingDuration(ev); overlapped {
				overlapping = true
				break
			}
		}
		if !overlapping {
			sl.Cname = colorLightGrey
		}
	}
	return sl
}

func (ctx *traceContext) emitTask(task *taskDesc, sortIndex int) {
	taskRow := uint64(task.id)
	taskName := task.name
	durationUsec := float64(task.lastTimestamp()-task.firstTimestamp()) / 1e3

	ctx.emitFooter(&traceviewer.Event{Name: "thread_name", Phase: "M", PID: tasksSection, TID: taskRow, Arg: &NameArg{fmt.Sprintf("T%d %s", task.id, taskName)}})
	ctx.emit(&traceviewer.Event{Name: "thread_sort_index", Phase: "M", PID: tasksSection, TID: taskRow, Arg: &SortIndexArg{sortIndex}})
	ts := float64(task.firstTimestamp()) / 1e3
	sl := &traceviewer.Event{
		Name:  taskName,
		Phase: "X",
		Time:  ts,
		Dur:   durationUsec,
		PID:   tasksSection,
		TID:   taskRow,
		Cname: pickTaskColor(task.id),
	}
	targ := TaskArg{ID: task.id}
	if task.create != nil {
		sl.Stack = ctx.stack(task.create.Stk)
		targ.StartG = task.create.G
	}
	if task.end != nil {
		sl.EndStack = ctx.stack(task.end.Stk)
		targ.EndG = task.end.G
	}
	sl.Arg = targ
	ctx.emit(sl)

	if task.create != nil && task.create.Type == trace.EvUserTaskCreate && task.create.Args[1] != 0 {
		ctx.arrowSeq++
		ctx.emit(&traceviewer.Event{Name: "newTask", Phase: "s", TID: task.create.Args[1], ID: ctx.arrowSeq, Time: ts, PID: tasksSection})
		ctx.emit(&traceviewer.Event{Name: "newTask", Phase: "t", TID: taskRow, ID: ctx.arrowSeq, Time: ts, PID: tasksSection})
	}
}

func (ctx *traceContext) emitRegion(s regionDesc) {
	if s.Name == "" {
		return
	}

	if !tsWithinRange(s.firstTimestamp(), ctx.startTime, ctx.endTime) &&
		!tsWithinRange(s.lastTimestamp(), ctx.startTime, ctx.endTime) {
		return
	}

	ctx.regionID++
	regionID := ctx.regionID

	id := s.TaskID
	scopeID := fmt.Sprintf("%x", id)
	name := s.Name

	sl0 := &traceviewer.Event{
		Category: "Region",
		Name:     name,
		Phase:    "b",
		Time:     float64(s.firstTimestamp()) / 1e3,
		TID:      s.G, // only in goroutine-oriented view
		ID:       uint64(regionID),
		Scope:    scopeID,
		Cname:    pickTaskColor(s.TaskID),
	}
	if s.Start != nil {
		sl0.Stack = ctx.stack(s.Start.Stk)
	}
	ctx.emit(sl0)

	sl1 := &traceviewer.Event{
		Category: "Region",
		Name:     name,
		Phase:    "e",
		Time:     float64(s.lastTimestamp()) / 1e3,
		TID:      s.G,
		ID:       uint64(regionID),
		Scope:    scopeID,
		Cname:    pickTaskColor(s.TaskID),
		Arg:      RegionArg{TaskID: s.TaskID},
	}
	if s.End != nil {
		sl1.Stack = ctx.stack(s.End.Stk)
	}
	ctx.emit(sl1)
}

type heapCountersArg struct {
	Allocated uint64
	NextGC    uint64
}

func (ctx *traceContext) emitHeapCounters(ev *trace.Event) {
	if ctx.prevHeapStats == ctx.heapStats {
		return
	}
	diff := uint64(0)
	if ctx.heapStats.nextGC > ctx.heapStats.heapAlloc {
		diff = ctx.heapStats.nextGC - ctx.heapStats.heapAlloc
	}
	if tsWithinRange(ev.Ts, ctx.startTime, ctx.endTime) {
		ctx.emit(&traceviewer.Event{Name: "Heap", Phase: "C", Time: ctx.time(ev), PID: 1, Arg: &heapCountersArg{ctx.heapStats.heapAlloc, diff}})
	}
	ctx.prevHeapStats = ctx.heapStats
}

type goroutineCountersArg struct {
	Running   uint64
	Runnable  uint64
	GCWaiting uint64
}

func (ctx *traceContext) emitGoroutineCounters(ev *trace.Event) {
	if ctx.prevGstates == ctx.gstates {
		return
	}
	if tsWithinRange(ev.Ts, ctx.startTime, ctx.endTime) {
		ctx.emit(&traceviewer.Event{Name: "Goroutines", Phase: "C", Time: ctx.time(ev), PID: 1, Arg: &goroutineCountersArg{uint64(ctx.gstates[gRunning]), uint64(ctx.gstates[gRunnable]), uint64(ctx.gstates[gWaitingGC])}})
	}
	ctx.prevGstates = ctx.gstates
}

type threadCountersArg struct {
	Running   int64
	InSyscall int64
}

func (ctx *traceContext) emitThreadCounters(ev *trace.Event) {
	if ctx.prevThreadStats == ctx.threadStats {
		return
	}
	if tsWithinRange(ev.Ts, ctx.startTime, ctx.endTime) {
		ctx.emit(&traceviewer.Event{Name: "Threads", Phase: "C", Time: ctx.time(ev), PID: 1, Arg: &threadCountersArg{
			Running:   ctx.threadStats.prunning,
			InSyscall: ctx.threadStats.insyscall}})
	}
	ctx.prevThreadStats = ctx.threadStats
}

func (ctx *traceContext) emitInstant(ev *trace.Event, name, category string) {
	if !tsWithinRange(ev.Ts, ctx.startTime, ctx.endTime) {
		return
	}

	cname := ""
	if ctx.mode&modeTaskOriented != 0 {
		taskID, isUserAnnotation := isUserAnnotationEvent(ev)

		show := false
		for _, task := range ctx.tasks {
			if isUserAnnotation && task.id == taskID || task.overlappingInstant(ev) {
				show = true
				break
			}
		}
		// grey out or skip if non-overlapping instant.
		if !show {
			if isUserAnnotation {
				return // don't display unrelated user annotation events.
			}
			cname = colorLightGrey
		}
	}
	var arg any
	if ev.Type == trace.EvProcStart {
		type Arg struct {
			ThreadID uint64
		}
		arg = &Arg{ev.Args[0]}
	}
	ctx.emit(&traceviewer.Event{
		Name:     name,
		Category: category,
		Phase:    "I",
		Scope:    "t",
		Time:     ctx.time(ev),
		TID:      ctx.proc(ev),
		Stack:    ctx.stack(ev.Stk),
		Cname:    cname,
		Arg:      arg})
}

func (ctx *traceContext) emitArrow(ev *trace.Event, name string) {
	if ev.Link == nil {
		// The other end of the arrow is not captured in the trace.
		// For example, a goroutine was unblocked but was not scheduled before trace stop.
		return
	}
	if ctx.mode&modeGoroutineOriented != 0 && (!ctx.gs[ev.Link.G] || ev.Link.Ts < ctx.startTime || ev.Link.Ts > ctx.endTime) {
		return
	}

	if ev.P == trace.NetpollP || ev.P == trace.TimerP || ev.P == trace.SyscallP {
		// Trace-viewer discards arrows if they don't start/end inside of a slice or instant.
		// So emit a fake instant at the start of the arrow.
		ctx.emitInstant(&trace.Event{P: ev.P, Ts: ev.Ts}, "unblock", "")
	}

	color := ""
	if ctx.mode&modeTaskOriented != 0 {
		overlapping := false
		// skip non-overlapping arrows.
		for _, task := range ctx.tasks {
			if _, overlapped := task.overlappingDuration(ev); overlapped {
				overlapping = true
				break
			}
		}
		if !overlapping {
			return
		}
	}

	ctx.arrowSeq++
	ctx.emit(&traceviewer.Event{Name: name, Phase: "s", TID: ctx.proc(ev), ID: ctx.arrowSeq, Time: ctx.time(ev), Stack: ctx.stack(ev.Stk), Cname: color})
	ctx.emit(&traceviewer.Event{Name: name, Phase: "t", TID: ctx.proc(ev.Link), ID: ctx.arrowSeq, Time: ctx.time(ev.Link), Cname: color})
}

func (ctx *traceContext) stack(stk []*trace.Frame) int {
	return ctx.buildBranch(ctx.frameTree, stk)
}

// buildBranch builds one branch in the prefix tree rooted at ctx.frameTree.
func (ctx *traceContext) buildBranch(parent frameNode, stk []*trace.Frame) int {
	if len(stk) == 0 {
		return parent.id
	}
	last := len(stk) - 1
	frame := stk[last]
	stk = stk[:last]

	node, ok := parent.children[frame.PC]
	if !ok {
		ctx.frameSeq++
		node.id = ctx.frameSeq
		node.children = make(map[uint64]frameNode)
		parent.children[frame.PC] = node
		ctx.consumer.consumeViewerFrame(strconv.Itoa(node.id), traceviewer.Frame{Name: fmt.Sprintf("%v:%v", frame.Fn, frame.Line), Parent: parent.id})
	}
	return ctx.buildBranch(node, stk)
}

// firstTimestamp returns the timestamp of the first event record.
func firstTimestamp() int64 {
	res, _ := parseTrace()
	if len(res.Events) > 0 {
		return res.Events[0].Ts
	}
	return 0
}

// lastTimestamp returns the timestamp of the last event record.
func lastTimestamp() int64 {
	res, _ := parseTrace()
	if n := len(res.Events); n > 1 {
		return res.Events[n-1].Ts
	}
	return 0
}

type jsonWriter struct {
	w   io.Writer
	enc *json.Encoder
}

func viewerDataTraceConsumer(w io.Writer, start, end int64) traceConsumer {
	frames := make(map[string]traceviewer.Frame)
	enc := json.NewEncoder(w)
	written := 0
	index := int64(-1)

	io.WriteString(w, "{")
	return traceConsumer{
		consumeTimeUnit: func(unit string) {
			io.WriteString(w, `"displayTimeUnit":`)
			enc.Encode(unit)
			io.WriteString(w, ",")
		},
		consumeViewerEvent: func(v *traceviewer.Event, required bool) {
			index++
			if !required && (index < start || index > end) {
				// not in the range. Skip!
				return
			}
			if written == 0 {
				io.WriteString(w, `"traceEvents": [`)
			}
			if written > 0 {
				io.WriteString(w, ",")
			}
			enc.Encode(v)
			// TODO: get rid of the extra \n inserted by enc.Encode.
			// Same should be applied to splittingTraceConsumer.
			written++
		},
		consumeViewerFrame: func(k string, v traceviewer.Frame) {
			frames[k] = v
		},
		flush: func() {
			io.WriteString(w, `], "stackFrames":`)
			enc.Encode(frames)
			io.WriteString(w, `}`)
		},
	}
}

// Mapping from more reasonable color names to the reserved color names in
// https://github.com/catapult-project/catapult/blob/master/tracing/tracing/base/color_scheme.html#L50
// The chrome trace viewer allows only those as cname values.
const (
	colorLightMauve     = "thread_state_uninterruptible" // 182, 125, 143
	colorOrange         = "thread_state_iowait"          // 255, 140, 0
	colorSeafoamGreen   = "thread_state_running"         // 126, 200, 148
	colorVistaBlue      = "thread_state_runnable"        // 133, 160, 210
	colorTan            = "thread_state_unknown"         // 199, 155, 125
	colorIrisBlue       = "background_memory_dump"       // 0, 180, 180
	colorMidnightBlue   = "light_memory_dump"            // 0, 0, 180
	colorDeepMagenta    = "detailed_memory_dump"         // 180, 0, 180
	colorBlue           = "vsync_highlight_color"        // 0, 0, 255
	colorGrey           = "generic_work"                 // 125, 125, 125
	colorGreen          = "good"                         // 0, 125, 0
	colorDarkGoldenrod  = "bad"                          // 180, 125, 0
	colorPeach          = "terrible"                     // 180, 0, 0
	colorBlack          = "black"                        // 0, 0, 0
	colorLightGrey      = "grey"                         // 221, 221, 221
	colorWhite          = "white"                        // 255, 255, 255
	colorYellow         = "yellow"                       // 255, 255, 0
	colorOlive          = "olive"                        // 100, 100, 0
	colorCornflowerBlue = "rail_response"                // 67, 135, 253
	colorSunsetOrange   = "rail_animation"               // 244, 74, 63
	colorTangerine      = "rail_idle"                    // 238, 142, 0
	colorShamrockGreen  = "rail_load"                    // 13, 168, 97
	colorGreenishYellow = "startup"                      // 230, 230, 0
	colorDarkGrey       = "heap_dump_stack_frame"        // 128, 128, 128
	colorTawny          = "heap_dump_child_node_arrow"   // 204, 102, 0
	colorLemon          = "cq_build_running"             // 255, 255, 119
	colorLime           = "cq_build_passed"              // 153, 238, 102
	colorPink           = "cq_build_failed"              // 238, 136, 136
	colorSilver         = "cq_build_abandoned"           // 187, 187, 187
	colorManzGreen      = "cq_build_attempt_runnig"      // 222, 222, 75
	colorKellyGreen     = "cq_build_attempt_passed"      // 108, 218, 35
	colorAnotherGrey    = "cq_build_attempt_failed"      // 187, 187, 187
)

var colorForTask = []string{
	colorLightMauve,
	colorOrange,
	colorSeafoamGreen,
	colorVistaBlue,
	colorTan,
	colorMidnightBlue,
	colorIrisBlue,
	colorDeepMagenta,
	colorGreen,
	colorDarkGoldenrod,
	colorPeach,
	colorOlive,
	colorCornflowerBlue,
	colorSunsetOrange,
	colorTangerine,
	colorShamrockGreen,
	colorTawny,
	colorLemon,
	colorLime,
	colorPink,
	colorSilver,
	colorManzGreen,
	colorKellyGreen,
}

func pickTaskColor(id uint64) string {
	idx := id % uint64(len(colorForTask))
	return colorForTask[idx]
}

Youez - 2016 - github.com/yon3zu
LinuXploit