From 04b35087d7af404d7498622e495e09a93d50b406 Mon Sep 17 00:00:00 2001 From: Adam Dickmeiss Date: Tue, 12 Aug 2014 21:42:40 +0200 Subject: [PATCH] Using yaz_poll rather than select PAZ-947 --- src/eventl.c | 118 ++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 70 insertions(+), 48 deletions(-) diff --git a/src/eventl.c b/src/eventl.c index 8bc158b..797f65b 100644 --- a/src/eventl.c +++ b/src/eventl.c @@ -211,17 +211,12 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { IOCHAN p, *nextp; IOCHAN start; IOCHAN inv_start; - fd_set in, out, except; - int res, max; + int res; static struct timeval to; - struct timeval *timeout; -// struct yaz_poll_fd *fds; + struct yaz_poll_fd *fds; int i, no_fds = 0; - FD_ZERO(&in); - FD_ZERO(&out); - FD_ZERO(&except); - timeout = &to; /* hang on select */ + int connection_fired = 0; to.tv_sec = 300; to.tv_usec = 0; @@ -231,48 +226,57 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { start = man->channel_list; yaz_mutex_leave(man->iochan_mutex); inv_start = start; - for (p = start; p; p = p->next) { + for (p = start; p; p = p->next) + if (p->fd >= 0) + no_fds++; + if (man->sel_fd != -1) no_fds++; + fds = (struct yaz_poll_fd *) xmalloc(no_fds * sizeof(*fds)); + i = 0; + if (man->sel_fd != -1) + { + fds[i].fd = man->sel_fd; + fds[i].input_mask = 0; + if (p->flags & EVENT_INPUT) + fds[i].input_mask |= yaz_poll_read; + i++; } -// fds = (struct yaz_poll_fd *) xmalloc(no_fds * sizeof(*fds)); - - max = 0; - for (p = start; p; p = p->next) { + for (p = start; p; p = p->next) + { if (p->thread_users > 0) continue; if (p->max_idle && p->max_idle < to.tv_sec) to.tv_sec = p->max_idle; if (p->fd < 0) continue; + fds[i].fd = p->fd; + fds[i].input_mask = 0; if (p->flags & EVENT_INPUT) - FD_SET(p->fd, &in); + fds[i].input_mask |= yaz_poll_read; if (p->flags & EVENT_OUTPUT) - FD_SET(p->fd, &out); + fds[i].input_mask |= yaz_poll_write; if (p->flags & EVENT_EXCEPT) - FD_SET(p->fd, &except); - if (p->fd > max) - max = p->fd; + fds[i].input_mask |= yaz_poll_except; + i++; } - yaz_log(man->log_level, "max=%d sel_fd=%d", max, man->sel_fd); - - if (man->sel_fd != -1) { - if (man->sel_fd > max) - max = man->sel_fd; - FD_SET(man->sel_fd, &in); - } - yaz_log(man->log_level, "select begin nofds=%d", max); - res = select(max + 1, &in, &out, &except, timeout); - yaz_log(man->log_level, "select returned res=%d", res); - if (res < 0) { + yaz_log(man->log_level, "yaz_poll begin nofds=%d", no_fds); + res = yaz_poll(fds, no_fds, to.tv_sec, 0); + yaz_log(man->log_level, "yaz_poll returned res=%d", res); + if (res < 0) + { if (errno == EINTR) continue; else { - yaz_log(YLOG_ERRNO | YLOG_WARN, "select"); + yaz_log(YLOG_ERRNO | YLOG_WARN, "poll"); return 0; } } - if (man->sel_fd != -1) { - if (FD_ISSET(man->sel_fd, &in)) { + i = 0; + if (man->sel_fd != -1) + { + assert(fds[i].fd == man->sel_fd); + if (fds[i].output_mask) + { IOCHAN chan; yaz_log(man->log_level, "eventl: sel input on sel_fd=%d", @@ -284,62 +288,79 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { chan->thread_users--; } } + i++; } - if (man->log_level) { + if (man->log_level) + { int no = 0; - for (p = start; p; p = p->next) { + for (p = start; p; p = p->next) no++; - } yaz_log(man->log_level, "%d channels", no); } - i = 0; - for (p = start; p; p = p->next) { + for (p = start; p; p = p->next) + { time_t now = time(0); - if (p->destroyed) { + if (p->destroyed) + { yaz_log(man->log_level, "eventl: skip destroyed chan=%p name=%s", p, p->name ? p->name : ""); + if (p->fd >= 0) + i++; continue; } - if (p->thread_users > 0) { + if (p->thread_users > 0) + { yaz_log(man->log_level, "eventl: skip chan=%p name=%s users=%d", p, p->name ? p->name : "", p->thread_users); + if (p->fd >= 0) + i++; continue; } p->this_event = 0; - if (p->max_idle && now - p->last_event > p->max_idle) { + if (p->max_idle && now - p->last_event > p->max_idle) + { p->last_event = now; p->this_event |= EVENT_TIMEOUT; } - if (p->fd >= 0) { - if (FD_ISSET(p->fd, &in)) { + if (p->fd >= 0) + { + assert(fds[i].fd == p->fd); + if (fds[i].output_mask & yaz_poll_read) + { p->last_event = now; p->this_event |= EVENT_INPUT; } - if (FD_ISSET(p->fd, &out)) { + if (fds[i].output_mask & yaz_poll_write) + { p->last_event = now; p->this_event |= EVENT_OUTPUT; } - if (FD_ISSET(p->fd, &except)) { + if (fds[i].output_mask & yaz_poll_except) + { p->last_event = now; p->this_event |= EVENT_EXCEPT; } + i++; } /* only fire one Z39.50/SRU socket event.. except for timeout */ if (p->this_event) { if (!(p->this_event & EVENT_TIMEOUT) && - !strcmp(p->name, "connection_socket")) { + !strcmp(p->name, "connection_socket")) + { /* not a timeout and we have a Z39.50/SRU socket */ - if (i == 0) + if (connection_fired == 0) run_fun(man, p); - i++; - } else + connection_fired++; + } + else run_fun(man, p); } } + assert(inv_start == start); yaz_mutex_enter(man->iochan_mutex); for (nextp = iochans; *nextp;) { @@ -350,6 +371,7 @@ static int event_loop(iochan_man_t man, IOCHAN *iochans) { nextp = &p->next; } yaz_mutex_leave(man->iochan_mutex); + xfree(fds); } while (*iochans); return 0; } -- 1.7.10.4