PenaDevops/delve
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Extract function to set slice len

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This commit is contained in:
Derek Parker 2014-12-29 21:05:22 -06:00
parent 4dce356497
commit 849a201d4a
1 changed files with 9 additions and 6 deletions
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15
proctl/variables.go
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@ -545,8 +545,7 @@ func (thread *ThreadContext) readIntSlice(addr uintptr, t *dwarf.StructType) (st
switch t.StructName {
case "[]int":
members := *(*[]int)(unsafe.Pointer(&val))
lptr := (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&members)) + ptrsize))
*lptr = int(l)
setSliceLength(unsafe.Pointer(&members), int(l))
return fmt.Sprintf("len: %d cap: %d %d", l, c, members), nil
}
return "", fmt.Errorf("Could not read slice")
@ -561,13 +560,11 @@ func (thread *ThreadContext) readIntArray(addr uintptr, t *dwarf.ArrayType) (str
switch t.Type.Size() {
case 4:
members := *(*[]uint32)(unsafe.Pointer(&val))
lptr := (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&members)) + ptrsize))
*lptr = int(t.Count)
setSliceLength(unsafe.Pointer(&members), int(t.Count))
return fmt.Sprintf("%s %d", t, members), nil
case 8:
members := *(*[]uint64)(unsafe.Pointer(&val))
lptr := (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&members)) + ptrsize))
*lptr = int(t.Count)
setSliceLength(unsafe.Pointer(&members), int(t.Count))
return fmt.Sprintf("%s %d", t, members), nil
}
return "", fmt.Errorf("Could not read array")
@ -626,3 +623,9 @@ func (thread *ThreadContext) readMemory(addr uintptr, size uintptr) ([]byte, err
return buf, nil
}
// Sets the length of a slice.
func setSliceLength(ptr unsafe.Pointer, l int) {
lptr := (*int)(unsafe.Pointer(uintptr(ptr) + ptrsize))
*lptr = int(l)
}