One or more consumer threads work together to perform matrix multiplication. Each consumer thread

gets a matrix from the bounded buffer $($M$1)$ at first. Then the consumer thread gets a second matrix

from the bounded buffer $($M$2).$ Calling the matrix.c routine Matrix $*$ MatrixMultiply$($Matrix $*$ m$1,$

Matrix $*$ m$2)$ will return a pointer with a result of the matrix multiplication $($M$3),$ or a NULL if matrix

multiplication fails due to a mismatch of the number of elements. If a NULL is received, then the

consumer thread discards the matrix $($i$.$e$.,$ M$2)$ and memory is free$$d by calling void FreeMatrix$($Matrix $*$

mat$)($refer to matrix.h and matrix.c$).$ The consumer thread then grabs the next available matrix from

the bounded buffer as M$2.$ When a valid matrix M$2$ is found that pairs with M$1,$ the matrix

multiplication operation is performed and the result in M$3$ is printed using the void

DisplayMatrix$($Matrix $*$ mat, FILE $*$stream$)$ routine $($refer to matrix.h and matrix.c$).$ With a successful

multiplication, both M$1$ and M$2$ will be free$$d and a new M$1$ will be obtained.