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windows: add process working size system calls

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Fixes golang/go#39422
This commit is contained in:
Awn Umar
2020-06-05 17:03:47 +01:00
parent 6fdc65e7d9
commit 7f57085a5f
4 changed files with 43 additions and 0 deletions
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5
windows/memory_windows.go
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@@ -23,4 +23,9 @@ const (
PAGE_EXECUTE_READ = 0x20
PAGE_EXECUTE_READWRITE = 0x40
PAGE_EXECUTE_WRITECOPY = 0x80
QUOTA_LIMITS_HARDWS_MIN_DISABLE = 0x00000002
QUOTA_LIMITS_HARDWS_MIN_ENABLE = 0x00000001
QUOTA_LIMITS_HARDWS_MAX_DISABLE = 0x00000008
QUOTA_LIMITS_HARDWS_MAX_ENABLE = 0x00000004
)

2
windows/syscall_windows.go
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@@ -308,6 +308,8 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys GetProcessId(process Handle) (id uint32, err error)
//sys OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error)
//sys SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost
//sys GetProcessWorkingSetSizeEx(hProcess Handle, lpMinimumWorkingSetSize *uintptr, lpMaximumWorkingSetSize *uintptr, flags *uint32)
//sys SetProcessWorkingSetSizeEx(hProcess Handle, dwMinimumWorkingSetSize uintptr, dwMaximumWorkingSetSize uintptr, flags uint32) (err error)
// Volume Management Functions
//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW

17
windows/syscall_windows_test.go
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@@ -404,3 +404,20 @@ func TestGetPreferredUILanguages(t *testing.T) {
}
}
}
func TestProcessWorkingSetSizeEx(t *testing.T) {
// Grab a handle to the current process
hProcess := windows.CurrentProcess()
// Allocate memory to store the result of the query
var minimumWorkingSetSize, maximumWorkingSetSize uintptr
// Make the system-call
var flag uint32
windows.GetProcessWorkingSetSizeEx(hProcess, &minimumWorkingSetSize, &maximumWorkingSetSize, &flag)
// Set the new limits to the current ones
if err := windows.SetProcessWorkingSetSizeEx(hProcess, minimumWorkingSetSize, maximumWorkingSetSize, flag); err != nil {
t.Error(err)
}
}

19
windows/zsyscall_windows.go
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@@ -217,6 +217,8 @@ var (
procGetProcessId = modkernel32.NewProc("GetProcessId")
procOpenThread = modkernel32.NewProc("OpenThread")
procSetProcessPriorityBoost = modkernel32.NewProc("SetProcessPriorityBoost")
procGetProcessWorkingSetSizeEx = modkernel32.NewProc("GetProcessWorkingSetSizeEx")
procSetProcessWorkingSetSizeEx = modkernel32.NewProc("SetProcessWorkingSetSizeEx")
procDefineDosDeviceW = modkernel32.NewProc("DefineDosDeviceW")
procDeleteVolumeMountPointW = modkernel32.NewProc("DeleteVolumeMountPointW")
procFindFirstVolumeW = modkernel32.NewProc("FindFirstVolumeW")
@@ -2414,6 +2416,23 @@ func SetProcessPriorityBoost(process Handle, disable bool) (err error) {
return
}
func GetProcessWorkingSetSizeEx(hProcess Handle, lpMinimumWorkingSetSize *uintptr, lpMaximumWorkingSetSize *uintptr, flags *uint32) {
syscall.Syscall6(procGetProcessWorkingSetSizeEx.Addr(), 4, uintptr(hProcess), uintptr(unsafe.Pointer(lpMinimumWorkingSetSize)), uintptr(unsafe.Pointer(lpMaximumWorkingSetSize)), uintptr(unsafe.Pointer(flags)), 0, 0)
return
}
func SetProcessWorkingSetSizeEx(hProcess Handle, dwMinimumWorkingSetSize uintptr, dwMaximumWorkingSetSize uintptr, flags uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetProcessWorkingSetSizeEx.Addr(), 4, uintptr(hProcess), uintptr(dwMinimumWorkingSetSize), uintptr(dwMaximumWorkingSetSize), uintptr(flags), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) {
r1, _, e1 := syscall.Syscall(procDefineDosDeviceW.Addr(), 3, uintptr(flags), uintptr(unsafe.Pointer(deviceName)), uintptr(unsafe.Pointer(targetPath)))
if r1 == 0 {