Fix a compilation error with uClibc

opsengine · Jan 4, 2025 · ebd677d · ebd677d
1 parent 53c9698
commit ebd677d
Show file tree

Hide file tree

Showing 2 changed files with 43 additions and 0 deletions.
diff --git a/src/util.c b/src/util.c
@@ -96,3 +96,42 @@ pid_t get_pid_max(void)
 #error "Platform not supported"
 #endif
 }
+
+#if defined(__linux__) && defined(__UCLIBC__)
+int getloadavg(double *a, int n)
+{
+    FILE *fp;
+    int i;
+
+    if (n <= 0)
+    {
+        return n ? -1 : 0;
+    }
+    if (n > 3)
+    {
+        n = 3;
+    }
+
+    fp = fopen("/proc/loadavg", "r");
+    if (fp == NULL)
+    {
+        perror("Failed to open /proc/loadavg");
+        return -1;
+    }
+
+    for (i = 0; i < n; i++)
+    {
+        if (fscanf(fp, "%lf", &a[i]) != 1)
+        {
+            break;
+        }
+    }
+
+    if (fclose(fp) != 0)
+    {
+        perror("Failed to close /proc/loadavg");
+    }
+
+    return i;
+}
+#endif
diff --git a/src/util.h b/src/util.h
@@ -175,4 +175,8 @@ int get_ncpu(void);
  */
 pid_t get_pid_max(void);
 
+#if defined(__linux__) && defined(__UCLIBC__)
+int getloadavg(double *a, int n);
+#endif
+
 #endif