/*++
Function:
TlsGetValue
See MSDN doc.
--*/
LPVOID
PALAPI
TlsGetValue(
IN DWORD dwTlsIndex)
{
THREAD *thread;
PERF_ENTRY(TlsGetValue);
ENTRY("TlsGetValue()\n");
if (dwTlsIndex == (DWORD) -1 || dwTlsIndex >= TLS_SLOT_SIZE)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
thread = PROCGetCurrentThreadObject();
if (thread == NULL)
{
ASSERT("Unable to access the current thread\n");
SetLastError(ERROR_INVALID_DATA);
return 0;
}
/* From MSDN : "The TlsGetValue function calls SetLastError to clear a
thread's last error when it succeeds." */
thread->lastError = NO_ERROR;
LOGEXIT("TlsGetValue \n" );
PERF_EXIT(TlsGetValue);
return thread->tlsSlots[dwTlsIndex];
}
/*++
Function:
TlsSetValue
See MSDN doc.
--*/
BOOL
PALAPI
TlsSetValue(
IN DWORD dwTlsIndex,
IN LPVOID lpTlsValue)
{
THREAD *thread;
BOOL bRet = FALSE;
PERF_ENTRY(TlsSetValue);
ENTRY("TlsSetValue(dwTlsIndex=%u, lpTlsValue=%p)\n", dwTlsIndex, lpTlsValue);
if (dwTlsIndex == (DWORD) -1 || dwTlsIndex >= TLS_SLOT_SIZE)
{
SetLastError(ERROR_INVALID_PARAMETER);
goto EXIT;
}
thread = PROCGetCurrentThreadObject();
if (thread == NULL)
{
ASSERT("Unable to access the current thread\n");
goto EXIT;
}
thread->tlsSlots[dwTlsIndex] = lpTlsValue;
bRet = TRUE;
EXIT:
LOGEXIT("TlsSetValue returns BOOL %d\n", bRet);
PERF_EXIT(TlsSetValue);
return bRet;
}
/*++
Function:
TlsInternalGetValue
Do the work of TlsGetValue, but without calling SetLastError(NO_ERROR)
This is so that PAL functions can call it without changing LastError
Parameters :
DWORD dwTlsIndex : TLS index to query
LPVOID *pValue : pointer where the requested value will be placed
Return value :
TRUE if function succeeds, FALSE otherwise.
--*/
BOOL TlsInternalGetValue(DWORD dwTlsIndex, LPVOID *pValue)
{
THREAD *thread;
if (dwTlsIndex == (DWORD) -1 || dwTlsIndex >= TLS_SLOT_SIZE)
{
ASSERT("Invalid index (%d)\n", dwTlsIndex);
return FALSE;
}
thread = PROCGetCurrentThreadObject();
if (thread == NULL)
{
ASSERT("Unable to access the current thread\n");
return FALSE;
}
*pValue = thread->tlsSlots[dwTlsIndex];
return TRUE;
}
/*++
Function:
SetLastError
SetLastError
The SetLastError function sets the last-error code for the calling thread.
Parameters
dwErrCode
[in] Specifies the last-error code for the thread.
Return Values
This function does not return a value.
--*/
VOID
PALAPI
SetLastError(
IN DWORD dwErrCode)
{
THREAD * thread;
ENTRY("SetLastError (dwErrCode=%u)\n", dwErrCode);
thread = PROCGetCurrentThreadObject();
if (thread == NULL)
{
StartupLastError = dwErrCode;
goto done;
}
thread->lastError = dwErrCode;
done:
LOGEXIT("SetLastError returns\n");
}
/*++
Function:
GetLastError
GetLastError
The GetLastError function retrieves the calling thread's last-error
code value. The last-error code is maintained on a per-thread
basis. Multiple threads do not overwrite each other's last-error code.
Parameters
This function has no parameters.
Return Values
The return value is the calling thread's last-error code
value. Functions set this value by calling the SetLastError
function. The Return Value section of each reference page notes the
conditions under which the function sets the last-error code.
--*/
DWORD
PALAPI
GetLastError(
VOID)
{
DWORD retval;
THREAD * thread;
ENTRY("GetLastError ()\n");
thread = PROCGetCurrentThreadObject();
if (thread == NULL)
{
retval = StartupLastError;
goto done;
}
retval = thread->lastError;
done:
LOGEXIT("GetLastError returns %d\n",retval);
return retval;
}
