X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-ust-abi.c;h=76f78702db080b1dcb04a5a2dad8927cf2fe60fb;hb=2fed87aef82aaa8edfb6d8d8ac6bbf5f1e67b955;hp=ea0a12483940def937212bc152f518cef90e9c81;hpb=39f98c62fa2eb208bc24230dc2d669132e08a1fa;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-ust-abi.c b/liblttng-ust/lttng-ust-abi.c
index ea0a1248..76f78702 100644
--- a/liblttng-ust/lttng-ust-abi.c
+++ b/liblttng-ust/lttng-ust-abi.c
@@ -31,6 +31,14 @@
 #include <lttng/usterr-signal-safe.h>
 #include "lttng/core.h"
 #include "ltt-tracer.h"
+#include "tracepoint-internal.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 +249,9 @@ static
 long lttng_abi_tracer_version(int objd,
 	struct lttng_ust_tracer_version *v)
 {
-	v->version = LTTNG_UST_VERSION;
+	v->major = LTTNG_UST_MAJOR;
+	v->minor = LTTNG_UST_MINOR;
 	v->patchlevel = LTTNG_UST_PATCHLEVEL;
-	v->sublevel = LTTNG_UST_SUBLEVEL;
 	return 0;
 }
 
@@ -322,7 +330,7 @@ void lttng_metadata_create_events(int channel_objd)
 	struct ltt_channel *channel = objd_private(channel_objd);
 	static struct lttng_ust_event metadata_params = {
 		.instrumentation = LTTNG_UST_TRACEPOINT,
-		.name = "lttng:metadata",
+		.name = "lttng_ust:metadata",
 	};
 	struct ltt_event *event;
 
@@ -513,7 +521,8 @@ copy:
 	if (!list->iter.tracepoint) {
 		tp_list_entry[0] = '\0';	/* end of list */
 	} else {
-		if (!strcmp((*list->iter.tracepoint)->name, "lttng:metadata"))
+		if (!strcmp((*list->iter.tracepoint)->name,
+				"lttng_ust:metadata"))
 			goto next;
 		memcpy(tp_list_entry, (*list->iter.tracepoint)->name,
 			LTTNG_UST_SYM_NAME_LEN);
@@ -835,7 +844,21 @@ 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);
 	}
@@ -899,5 +922,7 @@ 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;
 }