From a0125ebb5be78c66df93268ab44729b444bf96d9 Mon Sep 17 00:00:00 2001 From: gop Date: Tue, 18 Jun 2024 16:54:57 -0500 Subject: [PATCH] Mining without json dependency --- go.mod | 5 +---- go.sum | 22 +++------------------- main.go | 34 ++++++++++++++++++++++++++++++++-- 3 files changed, 36 insertions(+), 25 deletions(-) diff --git a/go.mod b/go.mod index 0595a53..3236232 100644 --- a/go.mod +++ b/go.mod @@ -9,13 +9,13 @@ require ( github.com/TwiN/go-color v1.4.0 github.com/dominant-strategies/go-quai v0.29.1-0.20240524201502-51123399727b github.com/dominant-strategies/go-quai-stratum v0.3.0 + github.com/gogo/protobuf v1.3.2 github.com/sirupsen/logrus v1.9.3 github.com/spf13/viper v1.17.0 ) require ( github.com/DataDog/zstd v1.5.2 // indirect - github.com/StackExchange/wmi v1.2.1 // indirect github.com/VictoriaMetrics/fastcache v1.12.2 // indirect github.com/beorn7/perks v1.0.1 // indirect github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect @@ -33,10 +33,8 @@ require ( github.com/fsnotify/fsnotify v1.6.0 // indirect github.com/getsentry/sentry-go v0.18.0 // indirect github.com/go-ole/go-ole v1.2.6 // indirect - github.com/gogo/protobuf v1.3.2 // indirect github.com/golang/protobuf v1.5.3 // indirect github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb // indirect - github.com/google/go-cmp v0.6.0 // indirect github.com/gorilla/websocket v1.5.0 // indirect github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d // indirect github.com/hashicorp/golang-lru/v2 v2.0.5 // indirect @@ -99,7 +97,6 @@ require ( golang.org/x/text v0.13.0 // indirect google.golang.org/protobuf v1.31.0 // indirect gopkg.in/ini.v1 v1.67.0 // indirect - gopkg.in/urfave/cli.v1 v1.20.0 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect lukechampine.com/blake3 v1.2.1 // indirect modernc.org/mathutil v1.6.0 // indirect diff --git a/go.sum b/go.sum index 16f8bb1..5b7a12a 100644 --- a/go.sum +++ b/go.sum @@ -50,13 +50,10 @@ github.com/INFURA/go-ethlibs v0.0.0-20230222175239-ea21e114f25c/go.mod h1:D+ULjR github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY= github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqRtAwp2Xwc6WNPJEufxJ7fx3npB4UV/JOLmbu5I0= -github.com/StackExchange/wmi v1.2.1 h1:VIkavFPXSjcnS+O8yTq7NI32k0R5Aj+v39y29VYDOSA= -github.com/StackExchange/wmi v1.2.1/go.mod h1:rcmrprowKIVzvc+NUiLncP2uuArMWLCbu9SBzvHz7e8= github.com/TwiN/go-color v1.4.0 h1:fNbOwOrvup5oj934UragnW0B1WKaAkkB85q19Y7h4ng= github.com/TwiN/go-color v1.4.0/go.mod h1:0QTVEPlu+AoCyTrho7bXbVkrCkVpdQr7YF7PYWEtSxM= github.com/VictoriaMetrics/fastcache v1.12.2 h1:N0y9ASrJ0F6h0QaC3o6uJb3NIZ9VKLjCM7NQbSmF7WI= github.com/VictoriaMetrics/fastcache v1.12.2/go.mod h1:AmC+Nzz1+3G2eCPapF6UcsnkThDcMsQicp4xDukwJYI= -github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII= github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY= github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= @@ -68,8 +65,6 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8= github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= -github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw= -github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ= github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U= github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04= github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 h1:59Kx4K6lzOW5w6nFlA0v5+lk/6sjybR934QNHSJZPTQ= @@ -103,7 +98,6 @@ github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8Nz github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= -github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM= @@ -119,10 +113,6 @@ github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUn github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no= github.com/dominant-strategies/bn256 v0.0.0-20220930122411-fbf930a7493d h1:hkL13khTTS48QfWmjRFWpuzhOqu6S0cjpJOzPoBEDb4= github.com/dominant-strategies/bn256 v0.0.0-20220930122411-fbf930a7493d/go.mod h1:nvtPJPChairu4o4iX2XGrstOFpLaAgNYhrUCl5bSng4= -github.com/dominant-strategies/go-quai v0.13.0-pre.0.0.20240415183747-0b41b630d28e h1:EQ94Rl8rIo8VYWAWKyvNBbVIIQsSJ/W5CAlM6ygavs8= -github.com/dominant-strategies/go-quai v0.13.0-pre.0.0.20240415183747-0b41b630d28e/go.mod h1:jGBm267xHJKv8X7jtBdT7efc/tt+SsptBWNdVFxClL8= -github.com/dominant-strategies/go-quai v0.29.1-0.20240524201502-51123399727b h1:IytwwhTrD/h4Bx+mYN74kCkvhmYshnNvbFiI/I5T2qs= -github.com/dominant-strategies/go-quai v0.29.1-0.20240524201502-51123399727b/go.mod h1:r47V9UUKRZ0VOXm0Kth3xO1aYSBFM/qAFOr+zR2zBAA= github.com/dominant-strategies/go-quai-stratum v0.3.0 h1:MPGujICiLY4/4JZ1gAWXvv09/NWgwstEGQagPIHbpP8= github.com/dominant-strategies/go-quai-stratum v0.3.0/go.mod h1:i9tQ+G1ON5FB/f0ZFBjdH0YnkynCoyijQ0pU7+ucGGo= github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk= @@ -164,7 +154,6 @@ github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9 github.com/go-logfmt/logfmt v0.5.1 h1:otpy5pqBCBZ1ng9RQ0dPu4PN7ba75Y/aA+UpowDyNVA= github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs= github.com/go-martini/martini v0.0.0-20170121215854-22fa46961aab/go.mod h1:/P9AEU963A2AYjv4d1V5eVL1CQbEJq6aCNHDDjibzu8= -github.com/go-ole/go-ole v1.2.5/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0= github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY= github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0= github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY= @@ -190,6 +179,8 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw= github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw= github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4= +github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc= +github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs= github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= @@ -293,7 +284,6 @@ github.com/kataras/pio v0.0.2/go.mod h1:hAoW0t9UmXi4R5Oyq5Z4irTbaTsOemSrDGUtaTl7 github.com/kataras/sitemap v0.0.5/go.mod h1:KY2eugMKiPwsJgx7+U103YZehfvNGOXURubcGyk0Bz8= github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8= github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= -github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4= github.com/klauspost/compress v1.8.2/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A= github.com/klauspost/compress v1.9.7/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A= github.com/klauspost/compress v1.17.2 h1:RlWWUY/Dr4fL8qk9YG7DTZ7PDgME2V4csBXA8L/ixi4= @@ -383,12 +373,10 @@ github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec= github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY= github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE= -github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE= github.com/onsi/ginkgo v1.10.3/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE= github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk= github.com/onsi/ginkgo v1.14.0 h1:2mOpI4JVVPBN+WQRa0WKH2eXR+Ey+uK4n7Zj0aYpIQA= github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY= -github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY= github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY= github.com/onsi/gomega v1.10.1 h1:o0+MgICZLuZ7xjH7Vx6zS/zcu93/BEp1VwkIW1mEXCE= github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo= @@ -442,12 +430,11 @@ github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6g github.com/sagikazarmark/slog-shim v0.1.0/go.mod h1:SrcSrq8aKtyuqEI1uvTDTK1arOWRIczQRv+GVI1AkeQ= github.com/schollz/closestmatch v2.1.0+incompatible/go.mod h1:RtP1ddjLong6gTkbtmuhtR2uUrrJOpYzYRvbcPAid+g= github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo= -github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible h1:Bn1aCHHRnjv4Bl16T8rcaFjYSrGrIZvpiGO6P3Q4GpU= -github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA= github.com/shirou/gopsutil/v3 v3.23.12 h1:z90NtUkp3bMtmICZKpC4+WaknU1eXtp5vtbQ11DgpE4= github.com/shirou/gopsutil/v3 v3.23.12/go.mod h1:1FrWgea594Jp7qmjHUUPlJDTPgcsb9mGnXDxavtikzM= github.com/shoenig/go-m1cpu v0.1.6 h1:nxdKQNcEB6vzgA2E2bvzKIYRuNj7XNJ4S/aRSwKzFtM= github.com/shoenig/go-m1cpu v0.1.6/go.mod h1:1JJMcUBvfNwpq05QDQVAnx3gUHr9IYF7GNg9SUEw2VQ= +github.com/shoenig/test v0.6.4 h1:kVTaSd7WLz5WZ2IaoM0RSzRsUD+m8wRR+5qvntpn4LU= github.com/shoenig/test v0.6.4/go.mod h1:byHiCGXqrVaflBLAMq/srcZIHynQPQgeyvkvXnjqq0k= github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc= github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo= @@ -530,7 +517,6 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw= go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk= go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0= go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y= -golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= @@ -905,8 +891,6 @@ gopkg.in/natefinch/lumberjack.v2 v2.2.1 h1:bBRl1b0OH9s/DuPhuXpNl+VtCaJXFZ5/uEFST gopkg.in/natefinch/lumberjack.v2 v2.2.1/go.mod h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc= gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ= gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= -gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0= -gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0= gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/main.go b/main.go index 456eeaf..a70b8ec 100644 --- a/main.go +++ b/main.go @@ -15,6 +15,7 @@ import ( "github.com/dominant-strategies/go-quai/consensus" "github.com/dominant-strategies/go-quai/quaiclient" "github.com/sirupsen/logrus" + "google.golang.org/protobuf/proto" "github.com/dominant-strategies/go-quai/common" "github.com/dominant-strategies/go-quai/consensus/blake3pow" @@ -29,7 +30,7 @@ const ( resultQueueSize = 10 maxRetryDelay = 60 * 60 * 4 // 4 hours USER_AGENT_VER = "0.1" - miningWorkRefreshRate = 2 * time.Second + miningWorkRefreshRate = 10000 * time.Second ) var ( @@ -54,6 +55,9 @@ type Miner struct { // RPC client connections to the Quai nodes sliceClients SliceClients + // woCh receives the pending header from the subscription + woCh chan []byte + // Channel to receive header updates updateCh chan *types.WorkObject @@ -161,6 +165,7 @@ func main() { m := &Miner{ config: config, engine: engine, + woCh: make(chan []byte, resultQueueSize), updateCh: make(chan *types.WorkObject, resultQueueSize), resultCh: make(chan *types.WorkObject, resultQueueSize), previousNumber: [common.HierarchyDepth]uint64{0, 0, 0}, @@ -176,6 +181,7 @@ func main() { go m.fetchPendingHeaderNode() // No separate call needed to start listeners. go m.subscribeNode() + go m.listenNewPendingHeader() } go m.resultLoop() go m.miningLoop() @@ -200,7 +206,7 @@ func (m *Miner) subscribeProxy() error { // Subscribes to the zone node in order to get pending header updates. func (m *Miner) subscribeNode() { - if _, err := m.sliceClients[common.ZONE_CTX].SubscribePendingHeader(context.Background(), m.updateCh); err != nil { + if _, err := m.sliceClients[common.ZONE_CTX].SubscribePendingHeader(context.Background(), m.woCh); err != nil { log.Fatal("Failed to subscribe to pending header events", err) } } @@ -250,6 +256,30 @@ func (m *Miner) fetchPendingHeaderNode() { } } +func (m *Miner) listenNewPendingHeader() { + for { + select { + case newPh := <-m.woCh: + if len(newPh) > 0 { + protoWo := &types.ProtoWorkObject{} + err := proto.Unmarshal(newPh, protoWo) + if err != nil { + log.Println("Error unmarshalling new pending header", "err", err) + continue + } + wo := &types.WorkObject{} + err = wo.ProtoDecode(protoWo, m.config.Location, types.PEtxObject) + if err != nil { + log.Println("Error decoding new pending header", "err", err) + continue + } + m.updateCh <- wo + } + default: + } + } +} + func (m *Miner) interrupt() { if m.stopCh != nil { close(m.stopCh)