#include <IOKit/IOCommandGate.h>
#include <IOKit/IOWorkLoop.h>
#include <IOKit/IOReturn.h>
#include <IOKit/IOTimeStamp.h>
#define super IOEventSource
OSDefineMetaClassAndStructors(IOCommandGate, IOEventSource)
OSMetaClassDefineReservedUnused(IOCommandGate, 0);
OSMetaClassDefineReservedUnused(IOCommandGate, 1);
OSMetaClassDefineReservedUnused(IOCommandGate, 2);
OSMetaClassDefineReservedUnused(IOCommandGate, 3);
OSMetaClassDefineReservedUnused(IOCommandGate, 4);
OSMetaClassDefineReservedUnused(IOCommandGate, 5);
OSMetaClassDefineReservedUnused(IOCommandGate, 6);
OSMetaClassDefineReservedUnused(IOCommandGate, 7);
bool IOCommandGate::checkForWork() { return false; }
bool IOCommandGate::init(OSObject *inOwner, Action inAction)
{
return super::init(inOwner, (IOEventSource::Action) inAction);
}
IOCommandGate *
IOCommandGate::commandGate(OSObject *inOwner, Action inAction)
{
IOCommandGate *me = new IOCommandGate;
if (me && !me->init(inOwner, inAction)) {
me->release();
return 0;
}
return me;
}
IOReturn IOCommandGate::runCommand(void *arg0, void *arg1,
void *arg2, void *arg3)
{
IOReturn res;
if (!enabled)
return kIOReturnNotPermitted;
if (!action)
return kIOReturnNoResources;
IOTimeStampConstant(IODBG_CMDQ(IOCMDQ_ACTION),
(unsigned int) action, (unsigned int) owner);
closeGate();
res = (*(Action) action)(owner, arg0, arg1, arg2, arg3);
openGate();
return res;
}
IOReturn IOCommandGate::runAction(Action inAction,
void *arg0, void *arg1,
void *arg2, void *arg3)
{
IOReturn res;
if (!enabled)
return kIOReturnNotPermitted;
if (!inAction)
return kIOReturnBadArgument;
IOTimeStampConstant(IODBG_CMDQ(IOCMDQ_ACTION),
(unsigned int) inAction, (unsigned int) owner);
closeGate();
res = (*inAction)(owner, arg0, arg1, arg2, arg3);
openGate();
return res;
}
IOReturn IOCommandGate::attemptCommand(void *arg0, void *arg1,
void *arg2, void *arg3)
{
IOReturn res;
if (!enabled)
return kIOReturnNotPermitted;
if (!action)
return kIOReturnNoResources;
if (!tryCloseGate())
return kIOReturnCannotLock;
IOTimeStampConstant(IODBG_CMDQ(IOCMDQ_ACTION),
(unsigned int) action, (unsigned int) owner);
res = (*(Action) action)(owner, arg0, arg1, arg2, arg3);
openGate();
return res;
}
IOReturn IOCommandGate::attemptAction(Action inAction,
void *arg0, void *arg1,
void *arg2, void *arg3)
{
IOReturn res;
if (!enabled)
return kIOReturnNotPermitted;
if (!inAction)
return kIOReturnBadArgument;
if (!tryCloseGate())
return kIOReturnCannotLock;
IOTimeStampConstant(IODBG_CMDQ(IOCMDQ_ACTION),
(unsigned int) inAction, (unsigned int) owner);
res = (*inAction)(owner, arg0, arg1, arg2, arg3);
openGate();
return res;
}
IOReturn IOCommandGate::commandSleep(void *event, UInt32 interruptible)
{
if (!workLoop->inGate())
return kIOReturnNotPermitted;
return sleepGate(event, interruptible);
}
void IOCommandGate::commandWakeup(void *event, bool oneThread)
{
wakeupGate(event, oneThread);
}