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38cd455e4d
To help accommodate web browser interactions with websockets, when a streaming logs session is requested for the same actor while already serving a session for that user in a separate request, the original request will be closed and the new request start streaming logs instead. This should help with rogue sessions holding on for too long with no client on the other side (before idle timeout or connection close).
114 lines
2.0 KiB
Go
114 lines
2.0 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package pkgbits
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import (
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"fmt"
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"strings"
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)
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// fmtFrames formats a backtrace for reporting reader/writer desyncs.
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func fmtFrames(pcs ...uintptr) []string {
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res := make([]string, 0, len(pcs))
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walkFrames(pcs, func(file string, line int, name string, offset uintptr) {
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// Trim package from function name. It's just redundant noise.
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name = strings.TrimPrefix(name, "cmd/compile/internal/noder.")
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res = append(res, fmt.Sprintf("%s:%v: %s +0x%v", file, line, name, offset))
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})
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return res
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}
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type frameVisitor func(file string, line int, name string, offset uintptr)
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// SyncMarker is an enum type that represents markers that may be
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// written to export data to ensure the reader and writer stay
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// synchronized.
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type SyncMarker int
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//go:generate stringer -type=SyncMarker -trimprefix=Sync
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const (
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_ SyncMarker = iota
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// Public markers (known to go/types importers).
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// Low-level coding markers.
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SyncEOF
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SyncBool
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SyncInt64
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SyncUint64
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SyncString
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SyncValue
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SyncVal
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SyncRelocs
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SyncReloc
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SyncUseReloc
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// Higher-level object and type markers.
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SyncPublic
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SyncPos
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SyncPosBase
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SyncObject
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SyncObject1
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SyncPkg
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SyncPkgDef
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SyncMethod
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SyncType
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SyncTypeIdx
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SyncTypeParamNames
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SyncSignature
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SyncParams
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SyncParam
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SyncCodeObj
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SyncSym
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SyncLocalIdent
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SyncSelector
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// Private markers (only known to cmd/compile).
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SyncPrivate
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SyncFuncExt
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SyncVarExt
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SyncTypeExt
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SyncPragma
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SyncExprList
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SyncExprs
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SyncExpr
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SyncExprType
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SyncAssign
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SyncOp
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SyncFuncLit
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SyncCompLit
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SyncDecl
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SyncFuncBody
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SyncOpenScope
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SyncCloseScope
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SyncCloseAnotherScope
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SyncDeclNames
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SyncDeclName
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SyncStmts
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SyncBlockStmt
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SyncIfStmt
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SyncForStmt
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SyncSwitchStmt
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SyncRangeStmt
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SyncCaseClause
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SyncCommClause
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SyncSelectStmt
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SyncDecls
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SyncLabeledStmt
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SyncUseObjLocal
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SyncAddLocal
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SyncLinkname
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SyncStmt1
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SyncStmtsEnd
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SyncLabel
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SyncOptLabel
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)
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