* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * 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 free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
*
- * 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.
+ * 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.
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _GNU_SOURCE
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
+#define _LGPL_SOURCE
#include <stdlib.h>
-#include <string.h>
#include <unistd.h>
#include <common/error.h>
#include "utils.h"
+#include "lttng-sessiond.h"
+
+int ht_cleanup_pipe[2] = { -1, -1 };
/*
* Write to writable pipe used to notify a thread.
*/
int notify_thread_pipe(int wpipe)
{
- int ret;
+ ssize_t ret;
+
+ /* Ignore if the pipe is invalid. */
+ if (wpipe < 0) {
+ return 0;
+ }
- ret = write(wpipe, "!", 1);
- if (ret < 0) {
+ ret = lttng_write(wpipe, "!", 1);
+ if (ret < 1) {
PERROR("write poll pipe");
}
- return ret;
+ return (int) ret;
}
-/*
- * Return pointer to home directory path using the env variable HOME.
- *
- * No home, NULL is returned.
- */
-const char *get_home_dir(void)
+void ht_cleanup_push(struct lttng_ht *ht)
{
- return ((const char *) getenv("HOME"));
+ ssize_t ret;
+ int fd = ht_cleanup_pipe[1];
+
+ if (!ht) {
+ return;
+ }
+ if (fd < 0)
+ return;
+ ret = lttng_write(fd, &ht, sizeof(ht));
+ if (ret < sizeof(ht)) {
+ PERROR("write ht cleanup pipe %d", fd);
+ if (ret < 0) {
+ ret = -errno;
+ }
+ goto error;
+ }
+
+ /* All good. Don't send back the write positive ret value. */
+ ret = 0;
+error:
+ assert(!ret);
}