From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 5 Jan 2015 21:43:07 +0000 (-0500)
Subject: Fix: poll: show the correct number of fds
X-Git-Tag: v2.6.0~24
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=65da3cc731c72486d53d58c9b080f235121177d9;p=lttng-tools.git

Fix: poll: show the correct number of fds

LTTNG_POLL_GETNB() uses wait nb_fd, which is only updated after
lttng_poll_wait returns.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

Conflicts:
	src/bin/lttng-sessiond/ht-cleanup.c
---

diff --git a/src/bin/lttng-sessiond/agent-thread.c b/src/bin/lttng-sessiond/agent-thread.c
index 274b94998..eae99a31c 100644
--- a/src/bin/lttng-sessiond/agent-thread.c
+++ b/src/bin/lttng-sessiond/agent-thread.c
@@ -306,12 +306,14 @@ void *agent_thread_manage_registration(void *data)
 	}
 
 	while (1) {
-		DBG3("[agent-thread] Manage agent polling on %d fds",
+		DBG3("[agent-thread] Manage agent polling",
 				LTTNG_POLL_GETNB(&events));
 
 		/* Inifinite blocking call, waiting for transmission */
 restart:
 		ret = lttng_poll_wait(&events, -1);
+		DBG3("[agent-thread] Manage agent return from poll on %d fds",
+				LTTNG_POLL_GETNB(&events));
 		if (ret < 0) {
 			/*
 			 * Restart interrupted system call.
diff --git a/src/bin/lttng-sessiond/ht-cleanup.c b/src/bin/lttng-sessiond/ht-cleanup.c
index f343d620b..57d6aec11 100644
--- a/src/bin/lttng-sessiond/ht-cleanup.c
+++ b/src/bin/lttng-sessiond/ht-cleanup.c
@@ -60,13 +60,14 @@ void *thread_ht_cleanup(void *data)
 	health_code_update();
 
 	while (1) {
-		DBG3("[ht-thread] Polling on %d fds.",
-			LTTNG_POLL_GETNB(&events));
+		DBG3("[ht-thread] Polling.");
 
 		/* Inifinite blocking call, waiting for transmission */
 restart:
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG3("[ht-thread] Returning from poll on %d fds.",
+			LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		if (ret < 0) {
 			/*
diff --git a/src/bin/lttng-sessiond/main.c b/src/bin/lttng-sessiond/main.c
index 27dc98188..48868820e 100644
--- a/src/bin/lttng-sessiond/main.c
+++ b/src/bin/lttng-sessiond/main.c
@@ -1002,12 +1002,14 @@ static void *thread_manage_kernel(void *data)
 			update_poll_flag = 0;
 		}
 
-		DBG("Thread kernel polling on %d fds", LTTNG_POLL_GETNB(&events));
+		DBG("Thread kernel polling");
 
 		/* Poll infinite value of time */
 	restart:
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG("Thread kernel return from poll on %d fds",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		if (ret < 0) {
 			/*
@@ -1470,12 +1472,14 @@ static void *thread_manage_apps(void *data)
 	health_code_update();
 
 	while (1) {
-		DBG("Apps thread polling on %d fds", LTTNG_POLL_GETNB(&events));
+		DBG("Apps thread polling");
 
 		/* Inifinite blocking call, waiting for transmission */
 	restart:
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG("Apps thread return from poll on %d fds",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		if (ret < 0) {
 			/*
diff --git a/src/bin/lttng-sessiond/ust-thread.c b/src/bin/lttng-sessiond/ust-thread.c
index d0ea32480..35f82e391 100644
--- a/src/bin/lttng-sessiond/ust-thread.c
+++ b/src/bin/lttng-sessiond/ust-thread.c
@@ -64,13 +64,14 @@ void *ust_thread_manage_notify(void *data)
 	health_code_update();
 
 	while (1) {
-		DBG3("[ust-thread] Manage notify polling on %d fds",
-				LTTNG_POLL_GETNB(&events));
+		DBG3("[ust-thread] Manage notify polling");
 
 		/* Inifinite blocking call, waiting for transmission */
 restart:
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG3("[ust-thread] Manage notify return from poll on %d fds",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		if (ret < 0) {
 			/*
diff --git a/src/common/consumer.c b/src/common/consumer.c
index 72c5f3426..129203fa5 100644
--- a/src/common/consumer.c
+++ b/src/common/consumer.c
@@ -2189,9 +2189,12 @@ void *consumer_thread_metadata_poll(void *data)
 		}
 
 restart:
-		DBG("Metadata poll wait with %d fd(s)", LTTNG_POLL_GETNB(&events));
+		health_code_update();
 		health_poll_entry();
+		DBG("Metadata poll wait");
 		ret = lttng_poll_wait(&events, -1);
+		DBG("Metadata poll return from wait with %d fd(s)",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		DBG("Metadata event catched in thread");
 		if (ret < 0) {
@@ -2764,9 +2767,12 @@ void *consumer_thread_channel_poll(void *data)
 		}
 
 restart:
-		DBG("Channel poll wait with %d fd(s)", LTTNG_POLL_GETNB(&events));
+		health_code_update();
+		DBG("Channel poll wait");
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG("Channel poll return from wait with %d fd(s)",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		DBG("Channel event catched in thread");
 		if (ret < 0) {