PenaDevops/delve
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Don't assume pointer size

Browse Source
This commit is contained in:
Derek Parker 2014-12-19 23:10:32 -06:00
parent 8e40467c95
commit 04da3fcbc8
1 changed files with 13 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
proctl/variables.go
View File

@ -25,6 +25,8 @@ type M struct {
curg uintptr
}
const ptrsize uintptr = unsafe.Sizeof(int(1))
// Parses and returns select info on the internal M
// data structures used by the Go scheduler.
func (thread *ThreadContext) AllM() ([]*M, error) {
@ -34,7 +36,7 @@ func (thread *ThreadContext) AllM() ([]*M, error) {
if err != nil {
return nil, err
}
mptr, err := thread.readMemory(uintptr(allmaddr), 8)
mptr, err := thread.readMemory(uintptr(allmaddr), ptrsize)
if err != nil {
return nil, err
}
@ -72,7 +74,7 @@ func (thread *ThreadContext) AllM() ([]*M, error) {
if err != nil {
return nil, err
}
curgBytes, err := thread.readMemory(uintptr(curgAddr), 8)
curgBytes, err := thread.readMemory(uintptr(curgAddr), ptrsize)
if err != nil {
return nil, fmt.Errorf("could not read curg %#v %s", curgAddr, err)
}
@ -83,7 +85,7 @@ func (thread *ThreadContext) AllM() ([]*M, error) {
if err != nil {
return nil, err
}
procidBytes, err := thread.readMemory(uintptr(procidAddr), 8)
procidBytes, err := thread.readMemory(uintptr(procidAddr), ptrsize)
if err != nil {
return nil, fmt.Errorf("could not read procid %#v %s", procidAddr, err)
}
@ -121,7 +123,7 @@ func (thread *ThreadContext) AllM() ([]*M, error) {
if err != nil {
return nil, err
}
mptr, err = thread.readMemory(uintptr(alllinkAddr), 8)
mptr, err = thread.readMemory(uintptr(alllinkAddr), ptrsize)
if err != nil {
return nil, fmt.Errorf("could not read alllink %#v %s", alllinkAddr, err)
}
@ -193,11 +195,11 @@ func (dbp *DebuggedProcess) PrintGoroutinesInfo() error {
return err
}
fmt.Printf("[%d goroutines]\n", allglen)
faddr, err := dbp.CurrentThread.readMemory(uintptr(allgentryaddr), 8)
faddr, err := dbp.CurrentThread.readMemory(uintptr(allgentryaddr), ptrsize)
allg := binary.LittleEndian.Uint64(faddr)
for i := uint64(0); i < allglen; i++ {
err = printGoroutineInfo(dbp, allg+(i*8), reader)
err = printGoroutineInfo(dbp, allg+(i*uint64(ptrsize)), reader)
if err != nil {
return err
}
@ -207,7 +209,7 @@ func (dbp *DebuggedProcess) PrintGoroutinesInfo() error {
}
func printGoroutineInfo(dbp *DebuggedProcess, addr uint64, reader *dwarf.Reader) error {
gaddrbytes, err := dbp.CurrentThread.readMemory(uintptr(addr), 8)
gaddrbytes, err := dbp.CurrentThread.readMemory(uintptr(addr), ptrsize)
if err != nil {
return fmt.Errorf("error derefing *G %s", err)
}
@ -224,11 +226,11 @@ func printGoroutineInfo(dbp *DebuggedProcess, addr uint64, reader *dwarf.Reader)
return err
}
goidbytes, err := dbp.CurrentThread.readMemory(uintptr(goidaddr), 8)
goidbytes, err := dbp.CurrentThread.readMemory(uintptr(goidaddr), ptrsize)
if err != nil {
return fmt.Errorf("error reading goid %s", err)
}
schedbytes, err := dbp.CurrentThread.readMemory(uintptr(schedaddr+8), 8)
schedbytes, err := dbp.CurrentThread.readMemory(uintptr(schedaddr+uint64(ptrsize)), ptrsize)
if err != nil {
return fmt.Errorf("error reading sched %s", err)
}
@ -463,7 +465,7 @@ func (thread *ThreadContext) extractValue(instructions []byte, off int64, typ in
offaddr := uintptr(offset)
switch t := typ.(type) {
case *dwarf.PtrType:
addr, err := thread.readMemory(offaddr, 8)
addr, err := thread.readMemory(offaddr, ptrsize)
if err != nil {
return "", err
}
@ -577,7 +579,7 @@ func (thread *ThreadContext) readIntArray(addr uintptr, t *dwarf.ArrayType) (str
members = append(members, number)
}
return fmt.Sprintf("[%d]int %d", t.ByteSize/8, members), nil
return fmt.Sprintf("[%d]int %d", t.ByteSize/int64(ptrsize), members), nil
}
func (thread *ThreadContext) readInt(addr uintptr, size int64) (string, error) {