Consider the following multi$-$threaded pseudocode to send messages to and receive

messages from a buffer with size $3($i$.$e$.,$ there are $3$ slots for messages in the buffer$).$ Note

that the buffer functions are not thread$-$safe.lock$($&channel$->$mutex$)$; unlock$($&channel$->$mutex$)$; lock$($&channel$->$mutex$)$;data $=$ buffer$\_$remove$($channel$->$buffer$)$;unlock$($&channel$->$mutex$)$;$\}$

void send$\_$msg$($channel$\_$t$*$ channel, void$*$ data$)\{$while $($buffer$\_$full$($channel$->$buffer$))\{$ cond$\_$wait$($&channel$->$cv$2,$ &channel$->$mutex$)$;$\}$cond$\_$signal$($&channel$->$cv$1)$;$\}$Where are the bug$($s$)$ if any exist? Select any lines that must be changed and$/$or removed.

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No bugs