The attachInterrupt is a standard function of the Arduino / Wiring framework.
There are two frameworks for the LaunchPad CC3200:
Energia based on the Arduino / Wiring, and
Energia MT or Energia Multi-Tasking based on TI-RTOS.
For more information on the latter, please refer to Introducing Energia MT, LaunchPad MSP432: RTOS for Everyone and Exploring RTOS with Galaxia on Energia MT.
For more advanced RTOS applications where priority is critical, please consider Code Composer Studio, the official IDE from Texas Instruments.