Rename ltt-sessiond to lttng-sessiond

[lttng-tools.git] / ltt-sessiond / compat / compat-poll.c

diff --git a/ltt-sessiond/compat/compat-poll.c b/ltt-sessiond/compat/compat-poll.c
deleted file mode 100644 (file)
index cc4bb0f..0000000
--- a/ltt-sessiond/compat/compat-poll.c
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- * Copyright (C)  2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; only version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-
-#include <stdlib.h>
-#include <sys/resource.h>
-#include <sys/time.h>
-
-#include <lttngerr.h>
-
-#include "poll.h"
-
-unsigned int poll_max_size;
-
-/*
- * Create pollfd data structure.
- */
-int compat_poll_create(struct lttng_poll_event *events, int size)
-{
-       if (events == NULL || size <= 0) {
-               ERR("Wrong arguments for poll create");
-               goto error;
-       }
-
-       /* Don't bust the limit here */
-       if (size > poll_max_size) {
-               size = poll_max_size;
-       }
-
-       /* This *must* be freed by using lttng_poll_free() */
-       events->events = zmalloc(size * sizeof(struct pollfd));
-       if (events->events == NULL) {
-               perror("malloc struct pollfd");
-               goto error;
-       }
-
-       events->events_size = size;
-       events->nb_fd = 0;
-
-       return 0;
-
-error:
-       return -1;
-}
-
-/*
- * Add fd to pollfd data structure with requested events.
- */
-int compat_poll_add(struct lttng_poll_event *events, int fd,
-               uint32_t req_events)
-{
-       int new_size;
-       struct pollfd *ptr;
-
-       if (events == NULL || events->events == NULL || fd < 0) {
-               ERR("Bad compat poll add arguments");
-               goto error;
-       }
-
-       /* Reallocate pollfd structure by a factor of 2 if needed. */
-       if (events->nb_fd >= events->events_size) {
-               new_size = 2 * events->events_size;
-               ptr = realloc(events->events, new_size * sizeof(struct pollfd));
-               if (ptr == NULL) {
-                       perror("realloc poll add");
-                       goto error;
-               }
-               events->events = ptr;
-               events->events_size = new_size;
-       }
-
-       events->events[events->nb_fd].fd = fd;
-       events->events[events->nb_fd].events = req_events;
-       events->nb_fd++;
-
-       DBG("fd %d of %d added to pollfd", fd, events->nb_fd);
-
-       return 0;
-
-error:
-       return -1;
-}
-
-/*
- * Remove a fd from the pollfd structure.
- */
-int compat_poll_del(struct lttng_poll_event *events, int fd)
-{
-       int new_size, i, count = 0;
-       struct pollfd *old = NULL, *new = NULL;
-
-       if (events == NULL || events->events == NULL || fd < 0) {
-               ERR("Wrong arguments for poll del");
-               goto error;
-       }
-
-       old = events->events;
-       new_size = events->events_size - 1;
-
-       /* Safety check on size */
-       if (new_size > poll_max_size) {
-               new_size = poll_max_size;
-       }
-
-       new = zmalloc(new_size * sizeof(struct pollfd));
-       if (new == NULL) {
-               perror("malloc poll del");
-               goto error;
-       }
-
-       for (i = 0; i < events->events_size; i++) {
-               /* Don't put back the fd we want to delete */
-               if (old[i].fd != fd) {
-                       new[count].fd = old[i].fd;
-                       new[count].events = old[i].events;
-                       count++;
-               }
-       }
-
-       events->events_size = new_size;
-       events->events = new;
-       events->nb_fd--;
-
-       free(old);
-
-       return 0;
-
-error:
-       return -1;
-}
-
-/*
- * Wait on poll() with timeout. Blocking call.
- */
-int compat_poll_wait(struct lttng_poll_event *events, int timeout)
-{
-       int ret;
-
-       if (events == NULL || events->events == NULL ||
-                       events->events_size < events->nb_fd) {
-               ERR("poll wait arguments error");
-               goto error;
-       }
-
-       ret = poll(events->events, events->nb_fd, timeout);
-       if (ret < 0) {
-               /* At this point, every error is fatal */
-               perror("poll wait");
-               goto error;
-       }
-
-       return ret;
-
-error:
-       return -1;
-}
-
-/*
- * Setup poll set maximum size.
- */
-void compat_poll_set_max_size(void)
-{
-       int ret;
-       struct rlimit lim;
-
-       /* Default value */
-       poll_max_size = LTTNG_POLL_DEFAULT_SIZE;
-
-       ret = getrlimit(RLIMIT_NOFILE, &lim);
-       if (ret < 0) {
-               perror("getrlimit poll RLIMIT_NOFILE");
-               return;
-       }
-
-       poll_max_size = lim.rlim_cur;
-       if (poll_max_size <= 0) {
-               /* Extra precaution */
-               poll_max_size = LTTNG_POLL_DEFAULT_SIZE;
-       }
-
-       DBG("poll set max size set to %u", poll_max_size);
-}