From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Date: Thu, 4 Feb 2021 20:57:56 +0000 (-0500)
Subject: MI: support double element
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=2b1664007528accb47d09633a5198b668358c722;p=lttng-tools.git

MI: support double element

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I97411fea238d8b1275028d3d04a6f4f376624001
---

diff --git a/src/common/config/session-config.c b/src/common/config/session-config.c
index b08f40a2e..2263d9478 100644
--- a/src/common/config/session-config.c
+++ b/src/common/config/session-config.c
@@ -639,6 +639,32 @@ int config_writer_write_element_bool(struct config_writer *writer,
 		value ? config_xml_true : config_xml_false);
 }
 
+LTTNG_HIDDEN
+int config_writer_write_element_double(struct config_writer *writer,
+		const char *element_name,
+		double value)
+{
+	int ret;
+	xmlChar *encoded_element_name;
+
+	if (!writer || !writer->writer || !element_name || !element_name[0]) {
+		ret = -1;
+		goto end;
+	}
+
+	encoded_element_name = encode_string(element_name);
+	if (!encoded_element_name) {
+		ret = -1;
+		goto end;
+	}
+
+	ret = xmlTextWriterWriteFormatElement(
+			writer->writer, encoded_element_name, "%f", value);
+	xmlFree(encoded_element_name);
+end:
+	return ret >= 0 ? 0 : ret;
+}
+
 LTTNG_HIDDEN
 int config_writer_write_element_string(struct config_writer *writer,
 		const char *element_name, const char *value)
diff --git a/src/common/config/session-config.h b/src/common/config/session-config.h
index 82400a5ae..1a6019fb1 100644
--- a/src/common/config/session-config.h
+++ b/src/common/config/session-config.h
@@ -200,6 +200,23 @@ LTTNG_HIDDEN
 int config_writer_write_element_string(struct config_writer *writer,
 		const char *element_name, const char *value);
 
+/*
+ * Write an element of type double.
+ *
+ * writer An instance of a configuration writer.
+ *
+ * element_name Element name.
+ *
+ * value Double value of the element
+ *
+ * Returns zero if the element's value could be written.
+ * Negative values indicate an error.
+ */
+LTTNG_HIDDEN
+int config_writer_write_element_double(struct config_writer *writer,
+		const char *element_name,
+		double value);
+
 /*
  * Load session configurations from a file.
  *
diff --git a/src/common/mi-lttng.c b/src/common/mi-lttng.c
index bdd6dcea1..9031677d7 100644
--- a/src/common/mi-lttng.c
+++ b/src/common/mi-lttng.c
@@ -721,6 +721,15 @@ int mi_lttng_writer_write_element_string(struct mi_writer *writer,
 			element_name, value);
 }
 
+LTTNG_HIDDEN
+int mi_lttng_writer_write_element_double(struct mi_writer *writer,
+		const char *element_name,
+		double value)
+{
+	return config_writer_write_element_double(
+			writer->writer, element_name, value);
+}
+
 LTTNG_HIDDEN
 int mi_lttng_version(struct mi_writer *writer, struct mi_lttng_version *version,
 	const char *lttng_description, const char *lttng_license)
diff --git a/src/common/mi-lttng.h b/src/common/mi-lttng.h
index 9c985f6bb..ad9283236 100644
--- a/src/common/mi-lttng.h
+++ b/src/common/mi-lttng.h
@@ -353,6 +353,20 @@ int mi_lttng_writer_write_element_bool(struct mi_writer *writer,
 int mi_lttng_writer_write_element_string(struct mi_writer *writer,
 		const char *element_name, const char *value);
 
+/*
+ * Write an element of type double.
+ *
+ * writer An instance of a machine interface writer.
+ * element_name Element name.
+ * value Double value of the element.
+ *
+ * Returns zero if the element's value could be written.
+ * Negative values indicate an error.
+ */
+int mi_lttng_writer_write_element_double(struct mi_writer *writer,
+		const char *element_name,
+		double value);
+
 /*
  * Machine interface of struct version.
  *