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Inline arg variables in threads

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Isaac Shoebottom 2023-10-11 18:31:39 -03:00
parent 840abae776
commit af78125046
1 changed files with 17 additions and 26 deletions
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43
Assignment3/main.c
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@ -25,8 +25,6 @@ int houseFloor[2];
// Pipe between movers and truckers // Pipe between movers and truckers
int nextToTrucks[2]; int nextToTrucks[2];
//TODO: See if you can just use arg structure instead of making stack vars from the args
// Arg structure, need to assign id in loop, and a reference to a seed for rand_r(), since it mutates the seed // Arg structure, need to assign id in loop, and a reference to a seed for rand_r(), since it mutates the seed
typedef struct args { typedef struct args {
int id; int id;
@ -36,18 +34,16 @@ typedef struct args {
// Routine for house dwellers // Routine for house dwellers
void *dweller(void *arg) { void *dweller(void *arg) {
Args *args = (Args *) arg; // Cast void* to Args*, as pthread_create() requires void* Args *args = (Args *) arg; // Cast void* to Args*, as pthread_create() requires void*
int id = args->id; printf("Hello from house dweller %d\n", args->id);
unsigned int seed = args->seed;
printf("Hello from house dweller %d\n", id);
for (int i = 0; i < NUMBER_OF_BOXES_PER_DWELLER; i++) { for (int i = 0; i < NUMBER_OF_BOXES_PER_DWELLER; i++) {
int weight = RANDOM_WITHIN_RANGE(MIN_BOX_WEIGHT, MAX_BOX_WEIGHT, seed); // Generate random weight int weight = RANDOM_WITHIN_RANGE(MIN_BOX_WEIGHT, MAX_BOX_WEIGHT, args->seed); // Generate random weight
int time = RANDOM_WITHIN_RANGE(MIN_TIME_FOR_HOUSE_DWELLER, MAX_TIME_FOR_HOUSE_DWELLER, seed); // Time to pack box int time = RANDOM_WITHIN_RANGE(MIN_TIME_FOR_HOUSE_DWELLER, MAX_TIME_FOR_HOUSE_DWELLER, args->seed); // Time to pack box
sleep(time); // Simulate packing time sleep(time); // Simulate packing time
write(houseFloor[WRITE_END], &weight, sizeof(int)); // Write weight to pipe write(houseFloor[WRITE_END], &weight, sizeof(int)); // Write weight to pipe
printf("House dweller %d created a box that weights %d in %d units of time\n", id, weight, time); printf("House dweller %d created a box that weights %d in %d units of time\n", args->id, weight, time);
} }
printf("House dweller %d is done packing\n", id); printf("House dweller %d is done packing\n", args->id);
free(args); // Make sure to free the args struct free(args); // Make sure to free the args struct
return NULL; return NULL;
} }
@ -56,18 +52,16 @@ void *dweller(void *arg) {
// Comments from dweller() apply here as well // Comments from dweller() apply here as well
void *mover(void *arg) { void *mover(void *arg) {
Args *args = (Args *) arg; Args *args = (Args *) arg;
int id = args->id;
unsigned int seed = args->seed;
int weight; int weight;
printf("Hello from mover %d\n", id); printf("Hello from mover %d\n", args->id);
while (read(houseFloor[READ_END], &weight, sizeof(int)) > 0) { // Read from pipe, until dwellers are all done while (read(houseFloor[READ_END], &weight, sizeof(int)) > 0) { // Read from pipe, until dwellers are all done
int time = RANDOM_WITHIN_RANGE(MIN_TIME_FOR_MOVER, MAX_TIME_FOR_MOVER, seed); int time = RANDOM_WITHIN_RANGE(MIN_TIME_FOR_MOVER, MAX_TIME_FOR_MOVER, args->seed);
sleep(time); sleep(time);
write(nextToTrucks[WRITE_END], &weight, sizeof(int)); write(nextToTrucks[WRITE_END], &weight, sizeof(int));
printf("Mover %d brought down a box of weight %d in %d units of time\n", id, weight, time); printf("Mover %d brought down a box of weight %d in %d units of time\n", args->id, weight, time);
} }
printf("Mover %d is done moving\n", id); printf("Mover %d is done moving\n", args->id);
free(args); free(args);
return NULL; return NULL;
} }
@ -75,38 +69,35 @@ void *mover(void *arg) {
// Routine for truckers // Routine for truckers
void *trucker(void *arg) { void *trucker(void *arg) {
Args *args = (Args *) arg; Args *args = (Args *) arg;
int id = args->id;
unsigned int seed = args->seed;
int capacity = ROOM_IN_TRUCK; int capacity = ROOM_IN_TRUCK;
int truckWeight = 0; int truckWeight = 0;
int weight; int weight;
printf("Hello from trucker %d\n", id); printf("Hello from trucker %d\n", args->id);
while (read(nextToTrucks[READ_END], &weight, sizeof(int)) > 0) { // Read from pipe, until movers are all done while (read(nextToTrucks[READ_END], &weight, sizeof(int)) > 0) { // Read from pipe, until movers are all done
capacity--; capacity--;
truckWeight += weight; truckWeight += weight;
int time = RANDOM_WITHIN_RANGE(MIN_TIME_FOR_TRUCKER, MAX_TIME_FOR_TRUCKER, seed); int time = RANDOM_WITHIN_RANGE(MIN_TIME_FOR_TRUCKER, MAX_TIME_FOR_TRUCKER, args->seed);
sleep(time); sleep(time);
printf("Trucker %d loaded up box of weight %d in %d units of time, room left: %d\n", id, weight, time, capacity); printf("Trucker %d loaded up box of weight %d in %d units of time, room left: %d\n", args->id, weight, time, capacity);
if (capacity == 0) { // If truck is full, go on trip, and reset if (capacity == 0) { // If truck is full, go on trip, and reset
time = RANDOM_WITHIN_RANGE(MIN_TRIP_TIME, MAX_TRIP_TIME, seed); time = RANDOM_WITHIN_RANGE(MIN_TRIP_TIME, MAX_TRIP_TIME, args->seed);
printf("Full truck %d with load of %d units of mass departed. Round trip will take %d units of time\n", id, truckWeight, time); printf("Full truck %d with load of %d units of mass departed. Round trip will take %d units of time\n", args->id, truckWeight, time);
sleep(time); sleep(time);
capacity = ROOM_IN_TRUCK; capacity = ROOM_IN_TRUCK;
truckWeight = 0; truckWeight = 0;
} }
} }
// If truck is not full, go on trip, and end, as there are no more boxes // If truck is not full, go on trip, and end, as there are no more boxes
int time = RANDOM_WITHIN_RANGE(MIN_TRIP_TIME, MAX_TRIP_TIME, seed); int time = RANDOM_WITHIN_RANGE(MIN_TRIP_TIME, MAX_TRIP_TIME, args->seed);
printf("Not full truck %d with load of %d units of mass departed. One way will take %d units of time\n", id, truckWeight, time); printf("Not full truck %d with load of %d units of mass departed. One way trip will take %d units of time\n", args->id, truckWeight, time);
sleep(time); sleep(time);
printf("Truck %d is finished\n", id); printf("Truck %d is finished\n", args->id);
free(args); free(args);
return NULL; return NULL;
} }
int main(int argc, char **argv) { int main(int argc, char **argv) {
srand(time(NULL)); srand(time(NULL));