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delve
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体验新版 GitCode,发现更多精彩内容 >>
提交
e4426fa5
编写于
4月 03, 2015
作者:
D
Derek Parker
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Return breakpoint directly from trapWait
上级
e7a9daf2
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
81 addition
and
69 deletion
+81
-69
proctl/proctl.go
proctl/proctl.go
+34
-51
proctl/proctl_darwin.go
proctl/proctl_darwin.go
+22
-7
proctl/proctl_linux.go
proctl/proctl_linux.go
+24
-10
proctl/threads.go
proctl/threads.go
+1
-1
未找到文件。
proctl/proctl.go
浏览文件 @
e4426fa5
...
...
@@ -279,17 +279,15 @@ func (dbp *DebuggedProcess) next() error {
}
for
{
thread
,
err
:=
trapWait
(
dbp
,
-
1
)
thread
,
breakpoint
,
err
:=
trapWait
(
dbp
,
-
1
)
if
err
!=
nil
{
return
err
}
pc
,
err
:=
thread
.
CurrentPC
()
if
err
!=
nil
{
return
err
}
// Check if we've hit a software breakpoint. If so, reset PC.
if
err
=
thread
.
clearTempBreakpoint
(
pc
-
1
);
err
!=
nil
{
return
err
// Check if we've hit a breakpoint.
if
breakpoint
!=
nil
{
if
err
=
thread
.
clearTempBreakpoint
(
breakpoint
.
Addr
);
err
!=
nil
{
return
err
}
}
// Grab the current goroutine for this thread.
tg
,
err
:=
thread
.
curG
()
...
...
@@ -316,54 +314,39 @@ func (dbp *DebuggedProcess) Continue() error {
return
err
}
}
return
dbp
.
run
(
dbp
.
resume
)
}
fn
:=
func
()
error
{
thread
,
err
:=
trapWait
(
dbp
,
-
1
)
if
err
!=
nil
{
return
err
}
if
dbp
.
CurrentThread
!=
thread
{
dbp
.
SwitchThread
(
thread
.
Id
)
}
pc
,
err
:=
thread
.
CurrentPC
()
if
err
!=
nil
{
return
err
}
// Check to see if we hit a runtime.breakpoint
fn
:=
dbp
.
GoSymTable
.
PCToFunc
(
pc
)
if
fn
!=
nil
&&
fn
.
Name
==
"runtime.breakpoint"
{
// step twice to get back to user code
for
i
:=
0
;
i
<
2
;
i
++
{
err
=
thread
.
Step
()
if
err
!=
nil
{
return
err
}
}
dbp
.
Halt
()
return
nil
}
// Check for hardware breakpoint
for
_
,
bp
:=
range
dbp
.
HWBreakPoints
{
if
bp
!=
nil
&&
bp
.
Addr
==
pc
{
if
!
bp
.
Temp
{
return
dbp
.
Halt
()
}
return
nil
}
func
(
dbp
*
DebuggedProcess
)
resume
()
error
{
thread
,
breakpoint
,
err
:=
trapWait
(
dbp
,
-
1
)
if
err
!=
nil
{
return
err
}
if
dbp
.
CurrentThread
!=
thread
{
dbp
.
SwitchThread
(
thread
.
Id
)
}
pc
,
err
:=
thread
.
CurrentPC
()
if
err
!=
nil
{
return
err
}
if
breakpoint
!=
nil
{
if
!
breakpoint
.
Temp
{
return
dbp
.
Halt
()
}
// Check to see if we have hit a software breakpoint.
if
bp
,
ok
:=
dbp
.
BreakPoints
[
pc
-
1
];
ok
{
if
!
bp
.
Temp
{
return
dbp
.
Halt
()
}
// Check to see if we hit a runtime.breakpoint
fn
:=
dbp
.
GoSymTable
.
PCToFunc
(
pc
)
if
fn
!=
nil
&&
fn
.
Name
==
"runtime.breakpoint"
{
// step twice to get back to user code
for
i
:=
0
;
i
<
2
;
i
++
{
if
err
=
thread
.
Step
();
err
!=
nil
{
return
err
}
return
nil
}
return
fmt
.
Errorf
(
"unrecognized breakpoint %#v"
,
pc
)
return
dbp
.
Halt
()
}
return
dbp
.
run
(
fn
)
return
fmt
.
Errorf
(
"unrecognized breakpoint %#v"
,
pc
)
}
// Steps through process.
...
...
proctl/proctl_darwin.go
浏览文件 @
e4426fa5
...
...
@@ -171,17 +171,17 @@ func (dbp *DebuggedProcess) findExecutable() (*macho.File, error) {
return
exe
,
nil
}
func
trapWait
(
dbp
*
DebuggedProcess
,
pid
int
)
(
*
ThreadContext
,
error
)
{
func
trapWait
(
dbp
*
DebuggedProcess
,
pid
int
)
(
*
ThreadContext
,
*
BreakPoint
,
error
)
{
port
:=
C
.
mach_port_wait
(
dbp
.
os
.
portSet
)
switch
port
{
case
dbp
.
os
.
notificationPort
:
_
,
status
,
err
:=
wait
(
dbp
.
Pid
,
0
)
if
err
!=
nil
{
return
nil
,
err
return
nil
,
nil
,
err
}
dbp
.
exited
=
true
return
nil
,
ProcessExitedError
{
Pid
:
dbp
.
Pid
,
Status
:
status
.
ExitStatus
()}
return
nil
,
nil
,
ProcessExitedError
{
Pid
:
dbp
.
Pid
,
Status
:
status
.
ExitStatus
()}
case
C
.
MACH_RCV_INTERRUPTED
:
if
!
dbp
.
halt
{
// Call trapWait again, it seems
...
...
@@ -189,9 +189,9 @@ func trapWait(dbp *DebuggedProcess, pid int) (*ThreadContext, error) {
// process natural death _sometimes_.
return
trapWait
(
dbp
,
pid
)
}
return
nil
,
ManualStopError
{}
return
nil
,
nil
,
ManualStopError
{}
case
0
:
return
nil
,
fmt
.
Errorf
(
"error while waiting for task"
)
return
nil
,
nil
,
fmt
.
Errorf
(
"error while waiting for task"
)
}
// Since we cannot be notified of new threads on OS X
...
...
@@ -199,9 +199,24 @@ func trapWait(dbp *DebuggedProcess, pid int) (*ThreadContext, error) {
dbp
.
updateThreadList
()
thread
,
ok
:=
dbp
.
Threads
[
int
(
port
)]
if
!
ok
{
return
nil
,
fmt
.
Errorf
(
"could not find thread for %d"
,
port
)
return
nil
,
nil
,
fmt
.
Errorf
(
"could not find thread for %d"
,
port
)
}
return
thread
,
nil
pc
,
err
:=
thread
.
CurrentPC
()
if
err
!=
nil
{
return
nil
,
nil
,
err
}
// Check for hardware breakpoint
for
_
,
bp
:=
range
dbp
.
HWBreakPoints
{
if
bp
!=
nil
&&
bp
.
Addr
==
pc
{
return
thread
,
bp
,
nil
}
}
// Check to see if we have hit a software breakpoint.
if
bp
,
ok
:=
dbp
.
BreakPoints
[
pc
-
1
];
ok
{
return
thread
,
bp
,
nil
}
return
thread
,
nil
,
nil
}
func
wait
(
pid
,
options
int
)
(
int
,
*
sys
.
WaitStatus
,
error
)
{
...
...
proctl/proctl_linux.go
浏览文件 @
e4426fa5
...
...
@@ -216,11 +216,11 @@ func stopped(pid int) bool {
return
false
}
func
trapWait
(
dbp
*
DebuggedProcess
,
pid
int
)
(
*
ThreadContext
,
error
)
{
func
trapWait
(
dbp
*
DebuggedProcess
,
pid
int
)
(
*
ThreadContext
,
*
BreakPoint
,
error
)
{
for
{
wpid
,
status
,
err
:=
wait
(
pid
,
0
)
if
err
!=
nil
{
return
nil
,
fmt
.
Errorf
(
"wait err %s %d"
,
err
,
pid
)
return
nil
,
nil
,
fmt
.
Errorf
(
"wait err %s %d"
,
err
,
pid
)
}
if
wpid
==
0
{
continue
...
...
@@ -231,41 +231,55 @@ func trapWait(dbp *DebuggedProcess, pid int) (*ThreadContext, error) {
if
status
.
Exited
()
&&
wpid
==
dbp
.
Pid
{
dbp
.
exited
=
true
return
nil
,
ProcessExitedError
{
Pid
:
wpid
,
Status
:
status
.
ExitStatus
()}
return
nil
,
nil
,
ProcessExitedError
{
Pid
:
wpid
,
Status
:
status
.
ExitStatus
()}
}
if
status
.
StopSignal
()
==
sys
.
SIGTRAP
&&
status
.
TrapCause
()
==
sys
.
PTRACE_EVENT_CLONE
{
// A traced thread has cloned a new thread, grab the pid and
// add it to our list of traced threads.
cloned
,
err
:=
sys
.
PtraceGetEventMsg
(
wpid
)
if
err
!=
nil
{
return
nil
,
fmt
.
Errorf
(
"could not get event message: %s"
,
err
)
return
nil
,
nil
,
fmt
.
Errorf
(
"could not get event message: %s"
,
err
)
}
th
,
err
:=
dbp
.
addThread
(
int
(
cloned
),
false
)
if
err
!=
nil
{
return
nil
,
err
return
nil
,
nil
,
err
}
err
=
th
.
Continue
()
if
err
!=
nil
{
return
nil
,
fmt
.
Errorf
(
"could not continue new thread %d %s"
,
cloned
,
err
)
return
nil
,
nil
,
fmt
.
Errorf
(
"could not continue new thread %d %s"
,
cloned
,
err
)
}
err
=
dbp
.
Threads
[
int
(
wpid
)]
.
Continue
()
if
err
!=
nil
{
return
nil
,
fmt
.
Errorf
(
"could not continue new thread %d %s"
,
cloned
,
err
)
return
nil
,
nil
,
fmt
.
Errorf
(
"could not continue new thread %d %s"
,
cloned
,
err
)
}
continue
}
if
status
.
StopSignal
()
==
sys
.
SIGTRAP
{
thread
,
ok
:=
dbp
.
Threads
[
wpid
]
if
!
ok
{
return
nil
,
fmt
.
Errorf
(
"could not find thread for %d"
,
wpid
)
return
nil
,
nil
,
fmt
.
Errorf
(
"could not find thread for %d"
,
wpid
)
}
return
thread
,
nil
pc
,
err
:=
thread
.
CurrentPC
()
if
err
!=
nil
{
return
nil
,
nil
,
err
}
// Check for hardware breakpoint
for
_
,
bp
:=
range
dbp
.
HWBreakPoints
{
if
bp
!=
nil
&&
bp
.
Addr
==
pc
{
return
thread
,
bp
,
nil
}
}
// Check to see if we have hit a software breakpoint.
if
bp
,
ok
:=
dbp
.
BreakPoints
[
pc
-
1
];
ok
{
return
thread
,
bp
,
nil
}
return
thread
,
nil
,
nil
}
if
status
.
StopSignal
()
==
sys
.
SIGSTOP
&&
dbp
.
halt
{
return
nil
,
ManualStopError
{}
return
nil
,
nil
,
ManualStopError
{}
}
}
}
...
...
proctl/threads.go
浏览文件 @
e4426fa5
...
...
@@ -131,7 +131,7 @@ func (thread *ThreadContext) CallFn(name string, fn func(*ThreadContext) error)
if
err
:=
thread
.
Continue
();
err
!=
nil
{
return
err
}
if
_
,
err
=
trapWait
(
thread
.
Process
,
-
1
);
err
!=
nil
{
if
_
,
_
,
err
=
trapWait
(
thread
.
Process
,
-
1
);
err
!=
nil
{
return
err
}
return
fn
(
thread
)
...
...
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