/*
* @implemented
*/
LPVOID
WINAPI
CreateFiberEx(SIZE_T dwStackCommitSize,
SIZE_T dwStackReserveSize,
DWORD dwFlags,
LPFIBER_START_ROUTINE lpStartAddress,
LPVOID lpParameter)
{
PFIBER Fiber;
NTSTATUS Status;
INITIAL_TEB InitialTeb;
PACTIVATION_CONTEXT_STACK ActivationContextStack = NULL;
DPRINT("Creating Fiber\n");
/* Check for invalid flags */
if (dwFlags &~ FIBER_FLAG_FLOAT_SWITCH)
{
/* Fail */
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
/* Allocate the Activation Context Stack */
Status = RtlAllocateActivationContextStack(&ActivationContextStack);
if (!NT_SUCCESS(Status))
{
/* Fail */
BaseSetLastNTError(Status);
return NULL;
}
/* Allocate the fiber */
Fiber = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(FIBER));
if (!Fiber)
{
/* Free the activation context stack */
RtlFreeActivationContextStack(ActivationContextStack);
/* Fail */
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
/* Create the stack for the fiber */
Status = BaseCreateStack(NtCurrentProcess(),
dwStackCommitSize,
dwStackReserveSize,
&InitialTeb);
if (!NT_SUCCESS(Status))
{
/* Free the fiber */
RtlFreeHeap(GetProcessHeap(), 0, Fiber);
/* Free the activation context stack */
RtlFreeActivationContextStack(ActivationContextStack);
/* Failure */
BaseSetLastNTError(Status);
return NULL;
}
/* Clear the context */
RtlZeroMemory(&Fiber->Context, sizeof(CONTEXT));
/* Copy the data into the fiber */
Fiber->StackBase = InitialTeb.StackBase;
Fiber->StackLimit = InitialTeb.StackLimit;
Fiber->DeallocationStack = InitialTeb.AllocatedStackBase;
Fiber->Parameter = lpParameter;
Fiber->ExceptionList = EXCEPTION_CHAIN_END;
Fiber->GuaranteedStackBytes = 0;
Fiber->FlsData = NULL;
Fiber->ActivationContextStack = ActivationContextStack;
Fiber->Context.ContextFlags = CONTEXT_FULL;
/* Save FPU State if requested */
Fiber->Context.ContextFlags = (dwFlags & FIBER_FLAG_FLOAT_SWITCH) ? CONTEXT_FLOATING_POINT : 0;
/* initialize the context for the fiber */
BaseInitializeContext(&Fiber->Context,
lpParameter,
lpStartAddress,
InitialTeb.StackBase,
2);
/* Return the Fiber */
return Fiber;
}
/*
* @implemented
*/
LPVOID
WINAPI
CreateFiberEx(SIZE_T dwStackCommitSize,
SIZE_T dwStackReserveSize,
DWORD dwFlags,
LPFIBER_START_ROUTINE lpStartAddress,
LPVOID lpParameter)
{
PFIBER pfCurFiber;
NTSTATUS nErrCode;
INITIAL_TEB usFiberInitialTeb;
PVOID ActivationContextStack = NULL;
DPRINT("Creating Fiber\n");
#ifdef SXS_SUPPORT_ENABLED
/* Allocate the Activation Context Stack */
nErrCode = RtlAllocateActivationContextStack(&ActivationContextStack);
#endif
/* Allocate the fiber */
pfCurFiber = (PFIBER)RtlAllocateHeap(GetProcessHeap(),
0,
sizeof(FIBER));
/* Failure */
if (pfCurFiber == NULL)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
/* Create the stack for the fiber */
nErrCode = BasepCreateStack(NtCurrentProcess(),
dwStackCommitSize,
dwStackReserveSize,
&usFiberInitialTeb);
/* Failure */
if(!NT_SUCCESS(nErrCode))
{
/* Free the fiber */
RtlFreeHeap(GetProcessHeap(), 0, pfCurFiber);
/* Failure */
SetLastErrorByStatus(nErrCode);
return NULL;
}
/* Clear the context */
RtlZeroMemory(&pfCurFiber->Context, sizeof(CONTEXT));
/* copy the data into the fiber */
pfCurFiber->StackBase = usFiberInitialTeb.StackBase;
pfCurFiber->StackLimit = usFiberInitialTeb.StackLimit;
pfCurFiber->DeallocationStack = usFiberInitialTeb.AllocatedStackBase;
pfCurFiber->Parameter = lpParameter;
pfCurFiber->ExceptionList = (struct _EXCEPTION_REGISTRATION_RECORD *)-1;
pfCurFiber->GuaranteedStackBytes = 0;
pfCurFiber->FlsData = NULL;
pfCurFiber->ActivationContextStack = ActivationContextStack;
pfCurFiber->Context.ContextFlags = CONTEXT_FULL;
/* Save FPU State if requsted */
if (dwFlags & FIBER_FLAG_FLOAT_SWITCH)
{
pfCurFiber->Context.ContextFlags |= CONTEXT_FLOATING_POINT;
}
/* initialize the context for the fiber */
BasepInitializeContext(&pfCurFiber->Context,
lpParameter,
lpStartAddress,
usFiberInitialTeb.StackBase,
2);
/* Return the Fiber */
return pfCurFiber;
}