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syscall: keep Windows syscall pointers live too

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Like https://golang.org/cl/139360044

LGTM=rsc, alex.brainman
R=alex.brainman, rsc
CC=golang-codereviews
https://golang.org/cl/138250043
This commit is contained in:
Brad Fitzpatrick 2014-09-08 17:47:12 -07:00
parent 55c458e05f
commit c93f74d34b
2 changed files with 33 additions and 6 deletions
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24
src/syscall/mksyscall_windows.go
View File

@ -158,6 +158,7 @@ func (p *Param) SyscallArgList() []string {
case p.Type[0] == '*':
s = fmt.Sprintf("unsafe.Pointer(%s)", p.Name)
case p.Type == "string":
p.fn.use(p.tmpVar())
s = fmt.Sprintf("unsafe.Pointer(%s)", p.tmpVar())
case p.Type == "bool":
s = p.tmpVar()
@ -303,6 +304,7 @@ type Fn struct {
Params []*Param
Rets *Rets
PrintTrace bool
Used []string
dllname string
dllfuncname string
src string
@ -310,6 +312,15 @@ type Fn struct {
curTmpVarIdx int // insure tmp variables have uniq names
}
func (f *Fn) use(v string) {
for _, e := range f.Used {
if e == v {
return
}
}
f.Used = append(f.Used, v)
}
// extractParams parses s to extract function parameters.
func extractParams(s string, f *Fn) ([]*Param, error) {
s = trim(s)
@ -328,7 +339,7 @@ func extractParams(s string, f *Fn) ([]*Param, error) {
}
}
ps[i] = &Param{
Name: trim(b[0]),
Name: sanitizeName(trim(b[0])),
Type: trim(b[1]),
fn: f,
tmpVarIdx: -1,
@ -337,6 +348,13 @@ func extractParams(s string, f *Fn) ([]*Param, error) {
return ps, nil
}
func sanitizeName(n string) string {
if n == "use" {
return "use_"
}
return n
}
// extractSection extracts text out of string s starting after start
// and ending just before end. found return value will indicate success,
// and prefix, body and suffix will contain correspondent parts of string s.
@ -680,7 +698,7 @@ var (
{{define "funcbody"}}
func {{.Name}}({{.ParamList}}) {{if .Rets.List}}{{.Rets.List}} {{end}}{
{{template "tmpvars" .}} {{template "syscall" .}}
{{template "seterror" .}}{{template "printtrace" .}} return
{{template "used" .}}{{template "seterror" .}}{{template "printtrace" .}} return
}
{{end}}
@ -689,6 +707,8 @@ func {{.Name}}({{.ParamList}}) {{if .Rets.List}}{{.Rets.List}} {{end}}{
{{define "syscall"}}{{.Rets.SetReturnValuesCode}}{{.Syscall}}(proc{{.DLLFuncName}}.Addr(), {{.ParamCount}}, {{.SyscallParamList}}){{end}}
{{define "used"}}{{range .Used}}use(unsafe.Pointer({{.}}));{{end}}{{end}}
{{define "seterror"}}{{if .Rets.SetErrorCode}} {{.Rets.SetErrorCode}}
{{end}}{{end}}

15
src/syscall/zsyscall_windows.go
View File

@ -177,6 +177,7 @@ func LoadLibrary(libname string) (handle Handle, err error) {
return
}
r0, _, e1 := Syscall(procLoadLibraryW.Addr(), 1, uintptr(unsafe.Pointer(_p0)), 0, 0)
use(unsafe.Pointer(_p0))
handle = Handle(r0)
if handle == 0 {
if e1 != 0 {
@ -207,6 +208,7 @@ func GetProcAddress(module Handle, procname string) (proc uintptr, err error) {
return
}
r0, _, e1 := Syscall(procGetProcAddress.Addr(), 2, uintptr(module), uintptr(unsafe.Pointer(_p0)), 0)
use(unsafe.Pointer(_p0))
proc = uintptr(r0)
if proc == 0 {
if e1 != 0 {
@ -1559,6 +1561,7 @@ func GetHostByName(name string) (h *Hostent, err error) {
return
}
r0, _, e1 := Syscall(procgethostbyname.Addr(), 1, uintptr(unsafe.Pointer(_p0)), 0, 0)
use(unsafe.Pointer(_p0))
h = (*Hostent)(unsafe.Pointer(r0))
if h == nil {
if e1 != 0 {
@ -1582,6 +1585,8 @@ func GetServByName(name string, proto string) (s *Servent, err error) {
return
}
r0, _, e1 := Syscall(procgetservbyname.Addr(), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
s = (*Servent)(unsafe.Pointer(r0))
if s == nil {
if e1 != 0 {
@ -1606,6 +1611,7 @@ func GetProtoByName(name string) (p *Protoent, err error) {
return
}
r0, _, e1 := Syscall(procgetprotobyname.Addr(), 1, uintptr(unsafe.Pointer(_p0)), 0, 0)
use(unsafe.Pointer(_p0))
p = (*Protoent)(unsafe.Pointer(r0))
if p == nil {
if e1 != 0 {
@ -1624,6 +1630,7 @@ func DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSR
return
}
r0, _, _ := Syscall6(procDnsQuery_W.Addr(), 6, uintptr(unsafe.Pointer(_p0)), uintptr(qtype), uintptr(options), uintptr(unsafe.Pointer(extra)), uintptr(unsafe.Pointer(qrs)), uintptr(unsafe.Pointer(pr)))
use(unsafe.Pointer(_p0))
if r0 != 0 {
status = Errno(r0)
}
@ -1743,8 +1750,8 @@ func NetApiBufferFree(buf *byte) (neterr error) {
return
}
func LookupAccountSid(systemName *uint16, sid *SID, name *uint16, nameLen *uint32, refdDomainName *uint16, refdDomainNameLen *uint32, use *uint32) (err error) {
r1, _, e1 := Syscall9(procLookupAccountSidW.Addr(), 7, uintptr(unsafe.Pointer(systemName)), uintptr(unsafe.Pointer(sid)), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(nameLen)), uintptr(unsafe.Pointer(refdDomainName)), uintptr(unsafe.Pointer(refdDomainNameLen)), uintptr(unsafe.Pointer(use)), 0, 0)
func LookupAccountSid(systemName *uint16, sid *SID, name *uint16, nameLen *uint32, refdDomainName *uint16, refdDomainNameLen *uint32, use_ *uint32) (err error) {
r1, _, e1 := Syscall9(procLookupAccountSidW.Addr(), 7, uintptr(unsafe.Pointer(systemName)), uintptr(unsafe.Pointer(sid)), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(nameLen)), uintptr(unsafe.Pointer(refdDomainName)), uintptr(unsafe.Pointer(refdDomainNameLen)), uintptr(unsafe.Pointer(use_)), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
@ -1755,8 +1762,8 @@ func LookupAccountSid(systemName *uint16, sid *SID, name *uint16, nameLen *uint3
return
}
func LookupAccountName(systemName *uint16, accountName *uint16, sid *SID, sidLen *uint32, refdDomainName *uint16, refdDomainNameLen *uint32, use *uint32) (err error) {
r1, _, e1 := Syscall9(procLookupAccountNameW.Addr(), 7, uintptr(unsafe.Pointer(systemName)), uintptr(unsafe.Pointer(accountName)), uintptr(unsafe.Pointer(sid)), uintptr(unsafe.Pointer(sidLen)), uintptr(unsafe.Pointer(refdDomainName)), uintptr(unsafe.Pointer(refdDomainNameLen)), uintptr(unsafe.Pointer(use)), 0, 0)
func LookupAccountName(systemName *uint16, accountName *uint16, sid *SID, sidLen *uint32, refdDomainName *uint16, refdDomainNameLen *uint32, use_ *uint32) (err error) {
r1, _, e1 := Syscall9(procLookupAccountNameW.Addr(), 7, uintptr(unsafe.Pointer(systemName)), uintptr(unsafe.Pointer(accountName)), uintptr(unsafe.Pointer(sid)), uintptr(unsafe.Pointer(sidLen)), uintptr(unsafe.Pointer(refdDomainName)), uintptr(unsafe.Pointer(refdDomainNameLen)), uintptr(unsafe.Pointer(use_)), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)