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debugger: inline clearBreakpoint, createLogicalBreakpoint (#3389)

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Alessandro Arzilli 2023-05-31 19:21:12 +02:00 committed by GitHub
parent cc05aa2064
commit 407ace96c8
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 39 additions and 53 deletions
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92
service/debugger/debugger.go
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@ -732,11 +732,49 @@ func (d *Debugger) CreateBreakpoint(requestedBp *api.Breakpoint, locExpr string,
return locs[0].PCs return locs[0].PCs
} }
} }
createdBp, err := createLogicalBreakpoint(d, requestedBp, &setbp, suspended)
id := requestedBp.ID
if id <= 0 {
d.breakpointIDCounter++
id = d.breakpointIDCounter
} else {
d.breakpointIDCounter = id
}
lbp := &proc.LogicalBreakpoint{LogicalID: id, HitCount: make(map[int64]uint64), Enabled: true}
d.target.LogicalBreakpoints[id] = lbp
err = copyLogicalBreakpointInfo(lbp, requestedBp)
if err != nil { if err != nil {
return nil, err return nil, err
} }
lbp.Set = setbp
if lbp.Set.Expr != nil {
addrs := lbp.Set.Expr(d.Target())
if len(addrs) > 0 {
f, l, fn := d.Target().BinInfo().PCToLine(addrs[0])
lbp.File = f
lbp.Line = l
if fn != nil {
lbp.FunctionName = fn.Name
}
}
}
err = d.target.EnableBreakpoint(lbp)
if err != nil {
if suspended {
logflags.DebuggerLogger().Debugf("could not enable new breakpoint: %v (breakpoint will be suspended)", err)
} else {
delete(d.target.LogicalBreakpoints, lbp.LogicalID)
return nil, err
}
}
createdBp := d.convertBreakpoint(lbp)
d.log.Infof("created breakpoint: %#v", createdBp) d.log.Infof("created breakpoint: %#v", createdBp)
return createdBp, nil return createdBp, nil
} }
@ -765,53 +803,6 @@ func (d *Debugger) ConvertThreadBreakpoint(thread proc.Thread) *api.Breakpoint {
return nil return nil
} }
// createLogicalBreakpoint creates one physical breakpoint for each address
// in addrs and associates all of them with the same logical breakpoint.
func createLogicalBreakpoint(d *Debugger, requestedBp *api.Breakpoint, setbp *proc.SetBreakpoint, suspended bool) (*api.Breakpoint, error) {
id := requestedBp.ID
if id <= 0 {
d.breakpointIDCounter++
id = d.breakpointIDCounter
} else {
d.breakpointIDCounter = id
}
lbp := &proc.LogicalBreakpoint{LogicalID: id, HitCount: make(map[int64]uint64), Enabled: true}
d.target.LogicalBreakpoints[id] = lbp
err := copyLogicalBreakpointInfo(lbp, requestedBp)
if err != nil {
return nil, err
}
lbp.Set = *setbp
if lbp.Set.Expr != nil {
addrs := lbp.Set.Expr(d.Target())
if len(addrs) > 0 {
f, l, fn := d.Target().BinInfo().PCToLine(addrs[0])
lbp.File = f
lbp.Line = l
if fn != nil {
lbp.FunctionName = fn.Name
}
}
}
err = d.target.EnableBreakpoint(lbp)
if err != nil {
if suspended {
logflags.DebuggerLogger().Debugf("could not enable new breakpoint: %v (breakpoint will be suspended)", err)
} else {
delete(d.target.LogicalBreakpoints, lbp.LogicalID)
return nil, err
}
}
return d.convertBreakpoint(lbp), nil
}
func (d *Debugger) CreateEBPFTracepoint(fnName string) error { func (d *Debugger) CreateEBPFTracepoint(fnName string) error {
d.targetMutex.Lock() d.targetMutex.Lock()
defer d.targetMutex.Unlock() defer d.targetMutex.Unlock()
@ -970,11 +961,6 @@ func parseHitCondition(hitCond string) (token.Token, int, error) {
func (d *Debugger) ClearBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error) { func (d *Debugger) ClearBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error) {
d.targetMutex.Lock() d.targetMutex.Lock()
defer d.targetMutex.Unlock() defer d.targetMutex.Unlock()
return d.clearBreakpoint(requestedBp)
}
// clearBreakpoint clears a breakpoint, we can consume this function to avoid locking a goroutine
func (d *Debugger) clearBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error) {
if requestedBp.ID <= 0 { if requestedBp.ID <= 0 {
if len(d.target.Targets()) != 1 { if len(d.target.Targets()) != 1 {
return nil, ErrNotImplementedWithMultitarget return nil, ErrNotImplementedWithMultitarget