--- old/src/java.base/unix/native/libjli/java_md_solinux.h	2020-03-26 14:02:35.659835143 +0800
+++ new/src/java.base/unix/native/libjli/java_md_solinux.h	2020-03-26 14:02:35.471835809 +0800
@@ -34,8 +34,22 @@
 #define CounterGet()              (gethrtime()/1000)
 #define Counter2Micros(counts)    (counts)
 #else  /* ! HAVE_GETHRTIME */
-#define CounterGet()              (0)
-#define Counter2Micros(counts)    (1)
+/*
+ *  * Add gethrtime() implementation for launch time debug on Linux.
+ *   */
+#include <sys/time.h>
+inline uint64_t gethrtime() {
+  uint64_t result = 0;
+  struct timeval tv;
+  if (gettimeofday(&tv, NULL) != -1) {
+    result = 1000000LL * (uint64_t)tv.tv_sec;
+    result += (uint64_t)tv.tv_usec;
+  }
+  return result;
+}
+
+#define CounterGet()              (gethrtime())
+#define Counter2Micros(counts)    (counts)
 #endif /* HAVE_GETHRTIME */
 
 /* pointer to environment */