X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttctl%2Fliblttctl.c;h=1032f15660019608b5682e4e41180591db31a5d2;hb=daa2fb349fb9649d087feda05ac68d0b4e58b712;hp=6d49aeb37b440dc631376975ef1cac3acb2120d6;hpb=22acd9c7dda2c48c4a161aa39b5a598fef4f6310;p=ltt-control.git

diff --git a/liblttctl/liblttctl.c b/liblttctl/liblttctl.c
index 6d49aeb..1032f15 100644
--- a/liblttctl/liblttctl.c
+++ b/liblttctl/liblttctl.c
@@ -1,23 +1,25 @@
-/* libltt
+/*
+ * liblttctl
  *
- * Linux Trace Toolkit Netlink Control Library
+ * Linux Trace Toolkit Control Library
  *
  * Controls the ltt-control kernel module through debugfs.
  *
- * Copyright 2005 -
- * 	Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
- *
+ * Copyright (c) 2005-2010 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; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifdef HAVE_CONFIG_H
@@ -443,6 +445,7 @@ static int __lttctl_set_channel_enable(const char *name, const char *channel,
 
 	return ret;
 }
+
 int lttctl_set_channel_enable(const char *name, const char *channel,
 		int enable)
 {
@@ -639,7 +642,9 @@ static int __lttctl_set_channel_subbuf_size(const char *name,
 	ret = lttctl_sendop(ctlfname, opstr);
 	if (ret)
 		fprintf(stderr, "Set channel's subbuf size failed\n");
+	return ret;
 }
+
 int lttctl_set_channel_subbuf_size(const char *name, const char *channel,
 		unsigned subbuf_size)
 {
@@ -690,6 +695,74 @@ arg_error:
 	return ret;
 }
 
+static int __lttctl_set_channel_switch_timer(const char *name,
+		const char *channel, unsigned switch_timer)
+{
+	int ret;
+	char ctlfname[PATH_MAX];
+	char opstr[32];
+
+	sprintf(ctlfname, "%s/ltt/control/%s/channel/%s/switch_timer",
+		debugfsmntdir, name, channel);
+
+	sprintf(opstr, "%u", switch_timer);
+
+	ret = lttctl_sendop(ctlfname, opstr);
+	if (ret)
+		fprintf(stderr, "Set channel's switch timer failed\n");
+	return ret;
+}
+
+int lttctl_set_channel_switch_timer(const char *name, const char *channel,
+		unsigned switch_timer)
+{
+	int ret;
+	char **channellist;
+	int n_channel;
+
+	if (!name || !channel) {
+		fprintf(stderr, "%s: args invalid\n", __func__);
+		ret = -EINVAL;
+		goto arg_error;
+	}
+
+	ret = lttctl_check_trace(name, 1);
+	if (ret)
+		goto arg_error;
+
+	if (strcmp(channel, "all")) {
+		ret = __lttctl_set_channel_switch_timer(name, channel,
+			switch_timer);
+		if (ret)
+			goto op_err;
+	} else {
+		/* allow set subbuf_size for metadata channel */
+		n_channel = lttctl_get_channellist(name, &channellist, 1);
+		if (n_channel < 0) {
+			fprintf(stderr, "%s: lttctl_get_channellist failed\n",
+				__func__);
+			ret = -ENOENT;
+			goto op_err;
+		}
+
+		for (; n_channel > 0; n_channel--) {
+			ret = __lttctl_set_channel_switch_timer(name,
+				channellist[n_channel - 1], switch_timer);
+			if (ret)
+				goto op_err_clean;
+		}
+		lttctl_free_channellist(channellist, n_channel);
+	}
+
+	return 0;
+
+op_err_clean:
+	lttctl_free_channellist(channellist, n_channel);
+op_err:
+arg_error:
+	return ret;
+}
+
 int getdebugfsmntdir(char *mntdir)
 {
 	char mnt_dir[PATH_MAX];