From 0563022a206294757effa44686727bffc4f7c2bd Mon Sep 17 00:00:00 2001
From: Andrew John Hughes <gandalf@gcc.gnu.org>
Date: Fri, 23 Mar 2012 15:19:26 +0000
Subject: Merge GNU Classpath 0.99 into libjava.

From-SVN: r185741
---
 .../native/jni/java-lang/java_lang_VMSystem.c      | 52 ++++++++++++++++++----
 1 file changed, 44 insertions(+), 8 deletions(-)

(limited to 'libjava/classpath/native/jni/java-lang')

diff --git a/libjava/classpath/native/jni/java-lang/java_lang_VMSystem.c b/libjava/classpath/native/jni/java-lang/java_lang_VMSystem.c
index d203227..f623857 100644
--- a/libjava/classpath/native/jni/java-lang/java_lang_VMSystem.c
+++ b/libjava/classpath/native/jni/java-lang/java_lang_VMSystem.c
@@ -39,8 +39,12 @@ exception statement from your version. */
 
 #include <jcl.h>
 
+#include <time.h>
 #include <sys/time.h>
 #include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
 
 /*
  * Class:     java_lang_VMSystem
@@ -111,6 +115,22 @@ Java_java_lang_VMSystem_setErr (JNIEnv * env,
   (*env)->SetStaticObjectField (env, cls, field, obj);
 }
 
+static jlong currentTimeMicros(JNIEnv * env)
+{
+  /* Note: this implementation copied directly from Japhar's, by Chris Toshok. */
+  jlong result;
+  struct timeval tp;
+
+  if (gettimeofday (&tp, NULL) == -1)
+    (*env)->FatalError (env, "gettimeofday call failed.");
+
+  result = (jlong) tp.tv_sec;
+  result *= (jlong)1000000L;
+  result += (jlong)tp.tv_usec;
+
+  return result;
+}
+
 /*
  * Class:     java_lang_VMSystem
  * Method:    nanoTime
@@ -118,22 +138,38 @@ Java_java_lang_VMSystem_setErr (JNIEnv * env,
  */
 JNIEXPORT jlong JNICALL
 Java_java_lang_VMSystem_nanoTime
-  (JNIEnv * env __attribute__ ((__unused__)),
+  (JNIEnv * env,
    jclass thisClass __attribute__ ((__unused__)))
 {
-  /* Note: this implementation copied directly from Japhar's, by Chris Toshok. */
+#if defined(HAVE_CLOCK_GETTIME) && defined(_POSIX_MONOTONIC_CLOCK)
   jlong result;
-  struct timeval tp;
+  struct timespec tp;
 
-  if (gettimeofday (&tp, NULL) == -1)
-    (*env)->FatalError (env, "gettimeofday call failed.");
+  if (clock_gettime (CLOCK_MONOTONIC, &tp) == -1) {
+    return currentTimeMicros(env) * (jlong)1000;
+  }
 
   result = (jlong) tp.tv_sec;
-  result *= (jlong)1000000L;
-  result += (jlong)tp.tv_usec;
-  result *= (jlong)1000;
+  result *= (jlong)1000000000L;
+  result += (jlong)tp.tv_nsec;
 
   return result;
+#else
+  return currentTimeMicros(env) * (jlong)1000;
+#endif
+}
+
+/*
+ * Class:     java_lang_VMSystem
+ * Method:    currentTimeMillis
+ * Signature: ()J
+ */
+JNIEXPORT jlong JNICALL
+Java_java_lang_VMSystem_currentTimeMillis
+  (JNIEnv * env,
+   jclass thisClass __attribute__ ((__unused__)))
+{
+  return currentTimeMicros(env) / (jlong)1000L;
 }
 
 JNIEXPORT jstring JNICALL
-- 
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