X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-ust-abi.c;h=dbf533069f9b252a88327f91b5c6b106f2489983;hb=35897f8b2d311b756b81657dad9c53ef1c0fad8a;hp=6a60532daadafa02f466069985c6f86005213d80;hpb=a4ada9b87a62c26061c109abe0fd502e16f03db2;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-ust-abi.c b/liblttng-ust/lttng-ust-abi.c
index 6a60532d..dbf53306 100644
--- a/liblttng-ust/lttng-ust-abi.c
+++ b/liblttng-ust/lttng-ust-abi.c
@@ -29,8 +29,17 @@
 #include <urcu/list.h>
 #include <lttng/ust-events.h>
 #include <lttng/usterr-signal-safe.h>
-#include "lttng/core.h"
+#include <lttng/ust-version.h>
 #include "ltt-tracer.h"
+#include "tracepoint-internal.h"
+#include <helper.h>
+
+struct ltt_tracepoint_list {
+	struct tracepoint_iter iter;
+	int got_first;
+};
+
+static int lttng_ust_abi_close_in_progress;
 
 static
 int lttng_abi_tracepoint_list(void);
@@ -241,9 +250,9 @@ static
 long lttng_abi_tracer_version(int objd,
 	struct lttng_ust_tracer_version *v)
 {
-	v->version = LTTNG_UST_VERSION;
-	v->patchlevel = LTTNG_UST_PATCHLEVEL;
-	v->sublevel = LTTNG_UST_SUBLEVEL;
+	v->major = LTTNG_UST_MAJOR_VERSION;
+	v->minor = LTTNG_UST_MINOR_VERSION;
+	v->patchlevel = LTTNG_UST_PATCHLEVEL_VERSION;
 	return 0;
 }
 
@@ -836,7 +845,21 @@ int lttng_rb_release(int objd)
 		buf = priv->buf;
 		channel = priv->ltt_chan;
 		free(priv);
-		channel->ops->buffer_read_close(buf, channel->handle);
+		/*
+		 * If we are at ABI exit, we don't want to close the
+		 * buffer opened for read: it is being shared between
+		 * the parent and child (right after fork), and we don't
+		 * want the child to close it for the parent. For a real
+		 * exit, we don't care about marking it as closed, as
+		 * the consumer daemon (if there is one) will do fine
+		 * even if we don't mark it as "closed" for reading on
+		 * our side.
+		 * We only mark it as closed if it is being explicitely
+		 * released by the session daemon with an explicit
+		 * release command.
+		 */
+		if (!lttng_ust_abi_close_in_progress)
+			channel->ops->buffer_read_close(buf, channel->handle);
 
 		return lttng_ust_objd_unref(channel->objd);
 	}
@@ -900,5 +923,7 @@ static const struct lttng_ust_objd_ops lttng_event_ops = {
 
 void lttng_ust_abi_exit(void)
 {
+	lttng_ust_abi_close_in_progress = 1;
 	objd_table_destroy();
+	lttng_ust_abi_close_in_progress = 0;
 }