/**
* Reads lines from a file and inputs it into a global buffer
*
* @param file path
* @return NULL
*/
void *thread_read_with_mutex(void *params) {
FILE *fp;
char *line;
size_t length;
ssize_t read;
char *file;
t_thread_parameters *p;
p = (t_thread_parameters *)params;
file = malloc(sizeof(strlen(p->file)));
strcpy(file, p->file);
fp = fopen (file, "r");
if (fp != NULL) {
read = getline (&line, &length, fp);
while (read > -1) {
usleep (p->sleep_time);
if (read > 1) {
while (buff_full()) {
printf("fill thread: could not write -- not enough space\n");
}
printf ("fill thread: writing into buffer\n");
sem_wait (&lock);
buff_write (line);
read = getline (&line, &length, fp);
sem_post (&lock);
}
}
while (buff_full()) {
printf("fill thread: could not write -- not enough space\n");
}
sem_wait (&lock);
printf ("fill thread: writing [QUIT] into buffer\n");
buff_write ("QUIT");
sem_post (&lock);
}
fclose (fp);
printf("fill thread: quitting\n");
return NULL;
}
/**
* Reads lines from a file and inputs it into a global buffer
*
* @param file path
* @return NULL
*/
void *thread_read_with_condition_variables (void *params) {
FILE *fp;
char *line;
size_t length;
ssize_t read;
char *file;
t_thread_parameters *p;
p = (t_thread_parameters *)params;
file = malloc(sizeof(strlen(p->file)));
strcpy(file, p->file);
fp = fopen (file, "r");
if (fp != NULL) {
read = getline (&line, &length, fp);
while (read > -1) {
usleep (p->sleep_time);
if (read > 1) {
sem_wait (&space_available);
sem_wait (&lock);
printf ("fill thread: writing into buffer\n");
buff_write (line);
read = getline (&line, &length, fp);
sem_post (&lock);
sem_post (&items_available);
}
}
sem_wait (&space_available);
sem_wait (&lock);
printf ("fill thread: writing [QUIT] into buffer\n");
buff_write ("QUIT");
sem_post (&lock);
sem_post (&items_available);
}
fclose (fp);
printf("fill thread: quitting\n");
return NULL;
}
void httpsession_write(struct event *ev,int what, void *d)
{
HttpSession *session = (HttpSession *)d;
Buff *buff=session->response;
int len=0;
if(buff_len(buff)>0 )
{
len=buff_write(session->fd,buff,buff_len(buff));
if(len<0)
{
if(errno == EAGAIN)
{
return;
}
}
if(buff_len(buff)==0 )
httpserver_session_free( session);
}
}
void httpsession_file_write(struct event *ev,int what, void *d)
{
HttpSession *session = (HttpSession *)d;
Buff *buff=session->response;
int file_fd=session->file_fd;
int len=0;
/*here is most send http head or fail with EAGAIN*/
if(buff_len(buff)>0 )
{
len=buff_write(session->fd,buff,buff_len(buff));
if(len<0)
{
if(errno == EAGAIN)
{
return;
}
}
}
while(1)
{
buff_set_startpos( buff,0);
/*read file*/
do
{
len=buff_read(file_fd,buff,buff_tail_left(buff));
if(len == 0 )
{
httpserver_session_free( session);
return;
}
if(len == -1)
{
if(errno == EAGAIN)
{
continue;
}
TraceErr("read file fail:%s\n",strerror(errno));
httpserver_session_free( session);
return ;
}
}while(0);
session->total_read+=len;
/*send out*/
len=buff_write(session->fd,buff,buff_len(buff));
if(len<0)
{
/*socket buff full,try again*/
if(errno == EAGAIN)
{
return;
}
/*error free session*/
TraceErr("session write:FAIL\n");
httpserver_session_free( session);
break;
}
//printf("session write:%u\n",len);
}
}
