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2LATE e CLOSD #40

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merged 5 commits into from
May 9, 2020
Merged

2LATE e CLOSD #40

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71c094e
ciclo infinito
Ca-moes May 6, 2020
bf06208
?
Ca-moes May 6, 2020
14a191f
many CLOSD
Ca-moes May 6, 2020
204a800
enunciado
Ca-moes May 6, 2020
f3b32ff
Só 1 closd, no 2LATE
Ca-moes May 7, 2020
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25 changes: 11 additions & 14 deletions src2/Q2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ void * thread_func(void *arg){
strcat(privateFifo,".");
if(sprintf(temp,"%ld",tid)<0){perror("Server-sprintf");}
strcat(privateFifo,temp);

// open private fifo
int fd_priv; /**< private fifo file descriptor */
float startt = elapsedTime();
Expand Down Expand Up @@ -147,26 +147,23 @@ int main(int argc, char* argv[]) {
if(pthread_create(&tid, NULL, thread_func, &clientRequest)!=0){perror("Server-pthread_Create");}
if(pthread_detach(tid)!=0){perror("Server-pthread_detach");}
}

// closing sequence
if(unlink(fifopath)==-1){perror("Error destroying public fifo:");}
if(pthread_mutex_lock(&mut2)!=0){perror("Server-MutexLock");}
closed.x = 1;
if(pthread_mutex_unlock(&mut2)!=0){perror("Server-MutexUnLock");}
float starttime;
int readreturn;

// notifies client threads that server is closed
starttime = elapsedTime();
do{
readreturn = read(fd_pub, &clientRequest, BUFSIZE);
} while (readreturn == 0 && elapsedTime() - starttime < MSATTEMPT);
if (readreturn > 0){
if(pthread_create(&tid, NULL, thread_func, &clientRequest)!=0){perror("Server-pthread_Create");}
if(pthread_detach(tid)!=0){perror("Server-pthread_detach");}
//float starttime;
int readreturn = read(fd_pub, &clientRequest, BUFSIZE);
while (readreturn != 0)
{
printf("Dentro de while\n");
if(readreturn <0 ){perror("Server-read error");}
if(pthread_create(&tid, NULL, thread_func, &clientRequest)!=0){perror("Server-pthread_Create");}
if(pthread_detach(tid)!=0){perror("Server-pthread_detach");}
readreturn = read(fd_pub, &clientRequest, BUFSIZE);
}

// cleanup
if(close(fd_pub)==-1){perror("Server-closePublicFifo");}
if(unlink(fifopath)==-1){perror("Error destroying public fifo:");}
pthread_exit((void*)0);
}
16 changes: 12 additions & 4 deletions src2/U2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -44,11 +44,19 @@ void * thread_func(void *arg){

// opening Public fifo to be able to write
float startt = elapsedTime();
int attempt = 0;
do{
fd_pub = open(fifopath,O_WRONLY);
} while (fd_pub==-1 && elapsedTime() - startt < MSATTEMPT);
if (fd_pub < 0) {
fprintf(stderr, "%d-%s\n", i, "Client - Error Opening Public Fifo");
fd_pub = open(fifopath,O_WRONLY, O_NONBLOCK);
attempt++;
} while (fd_pub==-1 && attempt < 5);
if (fd_pub == -1) {
//fprintf(stderr, "%d-%s\n", i, "Client - Error Opening Public Fifo");
if(pthread_mutex_lock(&mut2)!=0){perror("Client-MutexLock");}
printRegister(time(NULL), i, getpid(), pthread_self(), useTime, -1, CLOSD);
if(pthread_mutex_unlock(&mut2)!=0){perror("Client-MutexUnLock");}
if(pthread_mutex_lock(&mut)!=0){perror("Client-MutexLock");}
serverOpen.x = 0;
if(pthread_mutex_unlock(&mut)!=0){perror("Client-MutexUnLock");}
pthread_exit(NULL);
}

Expand Down