/**
* Hook function for the thread-resumed event.
*
* @param pPreemptNotifier Pointer to the preempt_notifier struct.
* @param iCpu The CPU this thread is scheduled on.
*
* @remarks Called without holding the rq (runqueue) lock and with preemption
* enabled!
*/
static void rtThreadCtxHooksLnxSchedIn(struct preempt_notifier *pPreemptNotifier, int iCpu)
{
PRTTHREADCTXINT pThis = RT_FROM_MEMBER(pPreemptNotifier, RTTHREADCTXINT, hPreemptNotifier);
AssertPtr(pThis);
AssertPtr(pThis->pfnThreadCtxHook);
Assert(pThis->fRegistered);
pThis->pfnThreadCtxHook(RTTHREADCTXEVENT_RESUMED, pThis->pvUser);
}
/**
* Hook function for the thread-preempting event.
*
* @param pPreemptNotifier Pointer to the preempt_notifier struct.
* @param pNext Pointer to the task that is preempting the
* current thread.
*
* @remarks Called with the rq (runqueue) lock held and with preemption and
* interrupts disabled!
*/
static void rtThreadCtxHooksLnxSchedOut(struct preempt_notifier *pPreemptNotifier, struct task_struct *pNext)
{
PRTTHREADCTXINT pThis = RT_FROM_MEMBER(pPreemptNotifier, RTTHREADCTXINT, hPreemptNotifier);
AssertPtr(pThis);
AssertPtr(pThis->pfnThreadCtxHook);
Assert(pThis->fRegistered);
Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
pThis->pfnThreadCtxHook(RTTHREADCTXEVENT_PREEMPTING, pThis->pvUser);
}
/**
* Hook function for the thread-preempting event.
*
* @param pvThreadCtxInt Opaque pointer to the internal thread-context
* object.
*
* @remarks Called with the with preemption disabled!
*/
static void rtThreadCtxHooksSolPreempting(void *pvThreadCtxInt)
{
PRTTHREADCTXINT pThis = (PRTTHREADCTXINT)pvThreadCtxInt;
AssertPtr(pThis);
Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
if (pThis->fRegistered)
{
Assert(pThis->pfnThreadCtxHook);
pThis->pfnThreadCtxHook(RTTHREADCTXEVENT_PREEMPTING, pThis->pvUser);
}
}
/**
* Hook function for the thread-preempting event.
*
* @param pPreemptNotifier Pointer to the preempt_notifier struct.
* @param pNext Pointer to the task that is preempting the
* current thread.
*
* @remarks Called with the rq (runqueue) lock held and with preemption and
* interrupts disabled!
*/
static void rtThreadCtxHooksLnxSchedOut(struct preempt_notifier *pPreemptNotifier, struct task_struct *pNext)
{
PRTTHREADCTXINT pThis = RT_FROM_MEMBER(pPreemptNotifier, RTTHREADCTXINT, hPreemptNotifier);
#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
RTCCUINTREG fSavedEFlags = ASMGetFlags();
stac();
#endif
AssertPtr(pThis);
AssertPtr(pThis->pfnThreadCtxHook);
Assert(pThis->fRegistered);
Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
pThis->pfnThreadCtxHook(RTTHREADCTXEVENT_PREEMPTING, pThis->pvUser);
#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
ASMSetFlags(fSavedEFlags);
# if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 19) && defined(RT_ARCH_AMD64)
pThis->fSavedRFlags = fSavedEFlags;
# endif
#endif
}
/**
* Hook function for the thread-resumed event.
*
* @param pPreemptNotifier Pointer to the preempt_notifier struct.
* @param iCpu The CPU this thread is scheduled on.
*
* @remarks Called without holding the rq (runqueue) lock and with preemption
* enabled!
*/
static void rtThreadCtxHooksLnxSchedIn(struct preempt_notifier *pPreemptNotifier, int iCpu)
{
PRTTHREADCTXINT pThis = RT_FROM_MEMBER(pPreemptNotifier, RTTHREADCTXINT, hPreemptNotifier);
#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
RTCCUINTREG fSavedEFlags = ASMGetFlags();
stac();
#endif
AssertPtr(pThis);
AssertPtr(pThis->pfnThreadCtxHook);
Assert(pThis->fRegistered);
pThis->pfnThreadCtxHook(RTTHREADCTXEVENT_RESUMED, pThis->pvUser);
#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
# if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 19) && defined(RT_ARCH_AMD64)
fSavedEFlags &= ~RT_BIT_64(18) /*X86_EFL_AC*/;
fSavedEFlags |= pThis->fSavedRFlags & RT_BIT_64(18) /*X86_EFL_AC*/;
# endif
ASMSetFlags(fSavedEFlags);
#endif
}