Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-04-22 05:00:27 +00:00
Code Issues Projects Releases Packages Wiki Activity

[KERNEL32]

Browse source 
- Reapply the ConvertThreadToFiberEx changes from r52804, they were lost in r52805. Confirmed by Alex.
See issue #6394 for more details.

svn path=/trunk/; revision=54162
This commit is contained in:
Thomas Faber 2011-10-16 15:04:26 +00:00
parent 1a1bb9dde4
commit a8c53e6e1a
1 changed files with 37 additions and 27 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

64
reactos/dll/win32/kernel32/client/fiber.c
View file

@ -79,48 +79,58 @@ WINAPI
ConvertThreadToFiberEx(LPVOID lpParameter,
DWORD dwFlags)
{
PTEB pTeb = NtCurrentTeb();
PFIBER pfCurFiber;
PTEB Teb;
PFIBER Fiber;
DPRINT1("Converting Thread to Fiber\n");
/* the current thread is already a fiber */
if(pTeb->HasFiberData && pTeb->NtTib.FiberData) return pTeb->NtTib.FiberData;
/* Check for invalid flags */
if (dwFlags &~ FIBER_FLAG_FLOAT_SWITCH)
{
/* Fail */
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
/* allocate the fiber */
pfCurFiber = (PFIBER)RtlAllocateHeap(GetProcessHeap(),
0,
sizeof(FIBER));
/* Are we already a fiber? */
Teb = NtCurrentTeb();
if (Teb->HasFiberData)
{
/* Fail */
SetLastError(ERROR_ALREADY_FIBER);
return NULL;
}
/* failure */
if (pfCurFiber == NULL)
/* Allocate the fiber */
Fiber = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(FIBER));
if (!Fiber)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return NULL;
}
/* copy some contextual data from the thread to the fiber */
pfCurFiber->Parameter = lpParameter;
pfCurFiber->ExceptionList = pTeb->NtTib.ExceptionList;
pfCurFiber->StackBase = pTeb->NtTib.StackBase;
pfCurFiber->StackLimit = pTeb->NtTib.StackLimit;
pfCurFiber->DeallocationStack = pTeb->DeallocationStack;
pfCurFiber->FlsData = pTeb->FlsData;
pfCurFiber->GuaranteedStackBytes = pTeb->GuaranteedStackBytes;
pfCurFiber->ActivationContextStack = pTeb->ActivationContextStackPointer;
pfCurFiber->Context.ContextFlags = CONTEXT_FULL;
/* Copy some contextual data from the thread to the fiber */
Fiber->Parameter = lpParameter;
Fiber->ExceptionList = Teb->NtTib.ExceptionList;
Fiber->StackBase = Teb->NtTib.StackBase;
Fiber->StackLimit = Teb->NtTib.StackLimit;
Fiber->DeallocationStack = Teb->DeallocationStack;
Fiber->FlsData = Teb->FlsData;
Fiber->GuaranteedStackBytes = Teb->GuaranteedStackBytes;
Fiber->ActivationContextStack = Teb->ActivationContextStackPointer;
Fiber->Context.ContextFlags = CONTEXT_FULL;
/* Save FPU State if requsted */
/* Save FPU State if requested */
if (dwFlags & FIBER_FLAG_FLOAT_SWITCH)
{
pfCurFiber->Context.ContextFlags |= CONTEXT_FLOATING_POINT;
Fiber->Context.ContextFlags |= CONTEXT_FLOATING_POINT;
}
/* associate the fiber to the current thread */
pTeb->NtTib.FiberData = pfCurFiber;
pTeb->HasFiberData = TRUE;
/* Associate the fiber to the current thread */
Teb->NtTib.FiberData = Fiber;
Teb->HasFiberData = TRUE;
/* success */
return (LPVOID)pfCurFiber;
/* Return opaque fiber data */
return (LPVOID)Fiber;
}
/*