iochan_man_t iochan_man_create(int no_threads) {
iochan_man_t man = xmalloc(sizeof(*man));
man->channel_list = 0;
man->sel_thread = 0; /* can't create sel_thread yet because we may fork */
man->sel_fd = -1;
man->no_threads = no_threads;
man->log_level = yaz_log_module_level("iochan");
man->iochan_mutex = 0;
yaz_mutex_create(&man->iochan_mutex);
return man;
}
sel_thread_t sel_thread_create(void (*work_handler)(void *work_data),
void (*work_destroy)(void *work_data),
int *read_fd, int no_of_threads)
{
int i;
NMEM nmem = nmem_create();
sel_thread_t p = nmem_malloc(nmem, sizeof(*p));
assert(work_handler);
/* work_destroy may be NULL */
assert(read_fd);
assert(no_of_threads >= 1);
p->nmem = nmem;
#ifdef WIN32
/* use port 12119 temporarily on Windos and hope for the best */
p->spipe = yaz_spipe_create(12119, 0);
#else
p->spipe = yaz_spipe_create(0, 0);
#endif
if (!p->spipe)
{
nmem_destroy(nmem);
return 0;
}
*read_fd = p->read_fd = yaz_spipe_get_read_fd(p->spipe);
p->write_fd = yaz_spipe_get_write_fd(p->spipe);
p->input_queue = 0;
p->output_queue = 0;
p->free_queue = 0;
p->work_handler = work_handler;
p->work_destroy = work_destroy;
p->no_threads = 0; /* we if need to destroy */
p->stop_flag = 0;
p->mutex = 0;
yaz_mutex_create(&p->mutex);
yaz_cond_create(&p->input_data);
if (p->input_data == 0) /* condition variable could not be created? */
{
sel_thread_destroy(p);
return 0;
}
p->no_threads = no_of_threads;
p->thread_id = nmem_malloc(nmem, sizeof(*p->thread_id) * p->no_threads);
for (i = 0; i < p->no_threads; i++)
p->thread_id[i] = yaz_thread_create(sel_thread_handler, p);
return p;
}
int http_session_use(int delta)
{
int sessions;
if (!g_http_session_mutex)
yaz_mutex_create(&g_http_session_mutex);
yaz_mutex_enter(g_http_session_mutex);
g_http_sessions += delta;
sessions = g_http_sessions;
yaz_mutex_leave(g_http_session_mutex);
yaz_log(YLOG_DEBUG, "%s sessions=%d", delta == 0 ? "" : (delta > 0 ? "INC" : "DEC"), sessions);
return sessions;
}
static int iochan_use(int delta)
{
int iochans;
if (!g_mutex)
yaz_mutex_create(&g_mutex);
yaz_mutex_enter(g_mutex);
no_iochans += delta;
if (delta > 0)
no_iochans_total += delta;
iochans = no_iochans;
yaz_mutex_leave(g_mutex);
yaz_log(YLOG_DEBUG, "%s iochans=%d", delta == 0 ? "" : (delta > 0 ? "INC" : "DEC"), iochans);
return iochans;
}
static int connection_use(int delta)
{
int result;
if (!g_mutex)
yaz_mutex_create(&g_mutex);
yaz_mutex_enter(g_mutex);
no_connections += delta;
result = no_connections;
if (delta > 0)
total_no_connections += delta;
yaz_mutex_leave(g_mutex);
if (delta == 0)
return result;
yaz_log(YLOG_LOG, "%s connections=%d", delta > 0 ? "INC" : "DEC",
no_connections);
return result;
}
