X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Futils.c;h=358e407e9c326cf038024b570f4c9209a724e2ca;hp=5ea337450ecf63e8fc1f19b6e7e336804e869f68;hb=0b2dc8df2a6d7b3341a72a04767dd6328907c97c;hpb=4950b860f76b938833046793e7221c11e8e89682

diff --git a/src/bin/lttng-sessiond/utils.c b/src/bin/lttng-sessiond/utils.c
index 5ea337450..358e407e9 100644
--- a/src/bin/lttng-sessiond/utils.c
+++ b/src/bin/lttng-sessiond/utils.c
@@ -23,6 +23,9 @@
 #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.
@@ -55,3 +58,27 @@ const char *get_home_dir(void)
 {
 	return ((const char *) getenv("HOME"));
 }
+
+void ht_cleanup_push(struct lttng_ht *ht)
+{
+	int ret;
+	int fd = ht_cleanup_pipe[1];
+
+	if (fd < 0)
+		return;
+	do {
+		ret = write(fd, &ht, sizeof(ht));
+	} while (ret < 0 && errno == EINTR);
+	if (ret < 0 || 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);
+}