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proc/variables: Support chan types

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Pretty print will print them with the format:
chan <element type> <queued elements>/<queue size>
This commit is contained in:
aarzilli
2015-11-03 19:11:08 +01:00
committed by Derek Parker
parent c25b9b369a
commit 988d529e91
5 changed files with 31 additions and 3 deletions
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15
proc/variables.go
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@ -42,6 +42,7 @@ type Variable struct {
// base address of arrays, base address of the backing array for slices (0 for nil slices)
// base address of the backing byte array for strings
// address of the struct backing a chan variable
// address of the function entry point for function variables (0 for nil function pointers)
base uintptr
stride int64
@ -122,7 +123,12 @@ func newVariable(name string, addr uintptr, dwarfType dwarf.Type, thread *Thread
switch t := v.RealType.(type) {
case *dwarf.PtrType:
v.Kind = reflect.Ptr
structtyp, isstruct := t.Type.(*dwarf.StructType)
if isstruct && strings.HasPrefix(structtyp.StructName, "hchan<") {
v.Kind = reflect.Chan
} else {
v.Kind = reflect.Ptr
}
case *dwarf.StructType:
switch {
case t.StructName == "string":
@ -703,6 +709,13 @@ func (v *Variable) loadValueInternal(recurseLevel int) {
// Don't increase the recursion level when dereferencing pointers
v.Children[0].loadValueInternal(recurseLevel)
case reflect.Chan:
sv := v.maybeDereference()
sv.loadValueInternal(recurseLevel)
v.Children = sv.Children
v.Len = sv.Len
v.base = sv.Addr
case reflect.String:
var val string
val, v.Unreadable = v.thread.readStringValue(v.base, v.Len)