From: Michael Tremer <michael.tremer@ipfire.org>
Date: Mon, 30 Oct 2023 11:08:17 +0000 (+0000)
Subject: os: Add function to read loadavg
X-Git-Tag: 0.9.30~1380
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0a393fb738fa5b832eae4f13c741580bc68970be;p=pakfire.git

os: Add function to read loadavg

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/libpakfire/include/pakfire/os.h b/src/libpakfire/include/pakfire/os.h
index 70e608bee..a8a28cac7 100644
--- a/src/libpakfire/include/pakfire/os.h
+++ b/src/libpakfire/include/pakfire/os.h
@@ -54,6 +54,16 @@ struct pakfire_cpustat {
 
 int pakfire_cpustat(struct pakfire_cpustat* cpustat);
 
+// Load Average
+
+struct pakfire_loadavg {
+	double load1;
+	double load5;
+	double load15;
+};
+
+int pakfire_loadavg(struct pakfire_loadavg* loadavg);
+
 // Meminfo
 
 struct pakfire_meminfo {
diff --git a/src/libpakfire/os.c b/src/libpakfire/os.c
index bfb03a7df..7c19018b4 100644
--- a/src/libpakfire/os.c
+++ b/src/libpakfire/os.c
@@ -191,6 +191,24 @@ int pakfire_cpustat(struct pakfire_cpustat* cpustat) {
 	return pakfire_parse_file("/proc/stat", pakfire_parse_cpustat, cpustat);
 }
 
+// Load Average
+
+static int pakfire_parse_loadavg(char* line, size_t length, void* data) {
+	struct pakfire_loadavg* loadavg = data;
+	int r;
+
+	// Parse the first three values
+	r = sscanf(line, "%lf %lf %lf", &loadavg->load1, &loadavg->load5, &loadavg->load15);
+	if (r < 3)
+		return -EINVAL;
+
+	return 0;
+}
+
+int pakfire_loadavg(struct pakfire_loadavg* loadavg) {
+	return pakfire_parse_file("/proc/loadavg", pakfire_parse_loadavg, loadavg);
+}
+
 // Meminfo
 
 static int pakfire_parse_meminfo_value(uint64_t* mem, const char* s) {
diff --git a/tests/libpakfire/os.c b/tests/libpakfire/os.c
index 9cc6a27da..2c1d90a60 100644
--- a/tests/libpakfire/os.c
+++ b/tests/libpakfire/os.c
@@ -61,6 +61,22 @@ FAIL:
 	return EXIT_FAILURE;
 }
 
+// This test parses /proc/loadavg
+static int test_loadavg(const struct test* t) {
+	struct pakfire_loadavg loadavg = {};
+
+	ASSERT_SUCCESS(pakfire_loadavg(&loadavg));
+
+	ASSERT(loadavg.load1  >= 0);
+	ASSERT(loadavg.load5  >= 0);
+	ASSERT(loadavg.load15 >= 0);
+
+	return EXIT_SUCCESS;
+
+FAIL:
+	return EXIT_FAILURE;
+}
+
 // This test parses /proc/meminfo
 static int test_meminfo(const struct test* t) {
 	struct pakfire_meminfo meminfo = {};
@@ -89,6 +105,7 @@ FAIL:
 int main(int argc, const char* argv[]) {
 	testsuite_add_test(test_cpuinfo);
 	testsuite_add_test(test_cpustat);
+	testsuite_add_test(test_loadavg);
 	testsuite_add_test(test_meminfo);
 
 	return testsuite_run(argc, argv);