icetGetError(3) IceT Reference icetGetError(3)NAME
icetGetError -- return the last error condition.
Synopsis
#include <IceT.h>
GLenum icetGetError( void );
Description
Retrieves the first error or warning condition that occurred since the last call to icetGetError or since program startup, whichever hap-
pened last.
Once an error condition has been retrieved with icetGetError, the error condition is reset to no error and cannot be retrieved again.
Return Value
One of the following flags will be returned:
ICET_INVALID_VALUE
An inappropriate value has been passed to a function.
ICET_INVALID_OPERATION
An inappropriate function has been called.
ICET_OUT_OF_MEMORY
IceT has ran out of memory for buffer space.
ICET_BAD_CAST
A function has been passed a value of the wrong type.
ICET_INVALID_ENUM
A function has been passed an invalid constant.
ICET_SANITY_CHECK_FAIL
An internal error (or warning) has occurred.
ICET_NO_ERROR
No error has been raised since the last call to icetGetError.
Bugs
It is not possible to tell if the returned value was caused by an error or a warning.
Notes
The error value is not context dependent.
Copyright
Copyright (C)2003 Sandia Corporation
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software.
This source code is released under the New BSD License.
See AlsoicetDiagnostics(3)IceT Reference August 9, 2010 icetGetError(3)
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icetCreateContext(3) IceT Reference icetCreateContext(3)NAME
icetCreateContext -- creates a new context.
Synopsis
#include <IceT.h>
IceTContext icetCreateContext( IceTCommunicator comm );
Description
The icetCreateContext function creates a new .igcontext!IceT IceT context, makes it current, and returns a handle to the new context. The
handle returned is of type IceTContext. This is an opaque type that should not be handled directly, but rather simply passed to other IceT
functions.
Like OpenGL ,the IceT engine behaves like a large state machine. The parameters for engine operation is held in the current state. The
entire state is encapsulated in a context. Each new context contains its own state.
It is therefore possible to change the entire current state of IceT by simply switching contexts. Switching contexts is much faster, and
often more convenient, than trying to change many state parameters.
Errors
None.
Warnings
None.
Bugs
It may be tempting to use contexts to run different IceT operations on separate program threads. Although certainly possible, great care
must be taken. First of all, all threads will share the same context. Second of all, IceT is not thread safe. Therefore, a multi-threaded
program would have to run all IceT commands in `critical sections' to ensure that the correct context is being used, and the methods exe-
cute safely in general.
Notes
icetCreateContext duplicates the communicator comm. Thus, to avoid deadlocks on certain implementations (such as MPI), the user level pro-
gram should call icetCreateContext on all processes with the same comm object at about the same time.
Copyright
Copyright (C)2003 Sandia Corporation
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software.
This source code is released under the New BSD License.
See AlsoicetDestroyContext(3), icetGetContext(3), icetSetContext(3), icetCopyState(3), icetGet(3)IceT Reference August 9, 2010 icetCreateContext(3)