Api for managing files

This commit is contained in:
elvis
2022-03-18 20:49:28 +01:00
parent 6519b16e46
commit c8a685272f
6 changed files with 66 additions and 9 deletions

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@ -0,0 +1,38 @@
#include <apiFile.h>
void openFile(char *filepath, int flags, queueT *q, long fd_c, logT *logFileT);
void readFile(char *filepath, queueT *q, long fd_c, logT *logFileT);
void readNFiles(char *numStr, queueT *q, long fd_c, logT *logFileT);
void writeFile(char *filepath, size_t size, queueT *q, long fd_c, logT *logFileT, int append);
void lockFile(char *filepath, queueT *q, long fd_c, logT *logFileT, pthread_mutex_t *lock, waitingT **waiting);
void unlockFile(char *filepath, queueT *q, long fd_c, logT *logFileT, pthread_mutex_t *lock, waitingT **waiting);
void closeFile(char *filepath, queueT *q, long fd_c, logT *logFileT, pthread_mutex_t *lock, waitingT **waiting);
void removeFile(char *filepath, queueT *q, long fd_c, logT *logFileT, pthread_mutex_t *lock, waitingT **waiting);
int sendFile(fileT *f, long fd_c, logT *logFileT);
int addWaiting(waitingT **waiting, char *file, int fd);
int removeFirstWaiting(waitingT **waiting, char *file);
void clearWaiting(waitingT **waiting);

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@ -6,6 +6,13 @@
/* TODO: include lib di logging */
/* TODO: finire tutte le descrizioni */
// Lista dei client in attesa su una lock
typedef struct struct_waiting {
long fd; // client in attesa
char *file; // file su cui si vuole acquisire la lock
struct struct_waiting *next; // puntatore al prossimo elemento della lista
} waitingT;
/**
* Apri o crea un nuovo file
* \param filepath: nome del file

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@ -34,7 +34,6 @@ static void *workerpool_thread(void *threadpool) {
LOCK_RETURN(&(pool->lock), NULL);
for (;;) {
// in attesa di un messaggio, controllo spurious wakeups.
while((pool->count == 0) && (!pool->exiting)) {
pthread_cond_wait(&(pool->cond), &(pool->lock));

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@ -149,8 +149,8 @@ int main(int argc, char *argv[]) {
volatile int quit = 0;
sig_atomic_t stopNewConnections = 0; // true to stop new connections
sig_atomic_t numberOfConnections = 0;
volatile int stopNewConnections = 0; // true to stop new connections
volatile int numberOfConnections = 0;
while(!quit) {
// copio il set nella variabile temporanea per la select

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@ -183,14 +183,13 @@ int parser(int len, char *command, queueT *queue, long fd_c, logT* logFileT, pth
removeFile(token2, queue, fd_c, logFileT, lock, waiting);
goto _parser_end;
}
goto _parser_cleanup; // nessun comando riconosciuto
_parser_end:
free(command);
return 0;
// se arrivo qui non ho riconosciuto il comando
_parser_cleanup:
free(command);
return -1;
_parser_end:
free(command);
return 0;
}

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@ -1,6 +1,20 @@
#pragma once
#ifndef SERVERWORKER
#define SERVERWORKER
#include <apiFile.h>
#include <fileQueue.h>
// struttura dati che contiene gli argomenti da passare ai worker threads
typedef struct struct_thread {
long *args;
queueT *q; // puntatore alla queue dei file
// logT *logFileT; // puntatore alla struct del file di log
threadpool_t *pool; // puntatore alla threadpool
pthread_mutex_t *lock;
waitingT **waiting; // puntatore ai client in attesa di ottenere la lock su un file
} threadT;
// funzione eseguita dal generico Worker del pool di thread
void threadF(void *arg);