# HG changeset patch
# User jlaskey
# Date 1461589183 10800
# Node ID fd089d3f8cb35bad801da1a02c86ea1900008bea
# Parent  b2812e811d0d77e68fbd052d5cf1ff6fb2b665a6
8147634: Need a JImage API that given a JImageLocationRef returns class name
Reviewed-by: hseigel

diff -r b2812e811d0d -r fd089d3f8cb3 hotspot/src/share/vm/classfile/classLoader.cpp
--- a/hotspot/src/share/vm/classfile/classLoader.cpp	Mon Apr 25 09:59:07 2016 -0300
+++ b/hotspot/src/share/vm/classfile/classLoader.cpp	Mon Apr 25 09:59:43 2016 -0300
@@ -98,12 +98,13 @@
 
 // Entry points for jimage.dll for loading jimage file entries
 
-static JImageOpen_t                    JImageOpen                    = NULL;
-static JImageClose_t                   JImageClose                   = NULL;
-static JImagePackageToModule_t         JImagePackageToModule         = NULL;
-static JImageFindResource_t            JImageFindResource            = NULL;
-static JImageGetResource_t             JImageGetResource             = NULL;
-static JImageResourceIterator_t        JImageResourceIterator        = NULL;
+static JImageOpen_t                    JImageOpen             = NULL;
+static JImageClose_t                   JImageClose            = NULL;
+static JImagePackageToModule_t         JImagePackageToModule  = NULL;
+static JImageFindResource_t            JImageFindResource     = NULL;
+static JImageGetResource_t             JImageGetResource      = NULL;
+static JImageResourceIterator_t        JImageResourceIterator = NULL;
+static JImage_ResourcePath_t           JImageResourcePath     = NULL;
 
 // Globals
 
@@ -925,6 +926,8 @@
   guarantee(JImageGetResource != NULL, "function JIMAGE_GetResource not found");
   JImageResourceIterator = CAST_TO_FN_PTR(JImageResourceIterator_t, os::dll_lookup(handle, "JIMAGE_ResourceIterator"));
   guarantee(JImageResourceIterator != NULL, "function JIMAGE_ResourceIterator not found");
+  JImageResourcePath = CAST_TO_FN_PTR(JImage_ResourcePath_t, os::dll_lookup(handle, "JIMAGE_ResourcePath"));
+  guarantee(JImageResourcePath != NULL, "function JIMAGE_ResourcePath not found");
 }
 
 jboolean ClassLoader::decompress(void *in, u8 inSize, void *out, u8 outSize, char **pmsg) {
diff -r b2812e811d0d -r fd089d3f8cb3 hotspot/src/share/vm/classfile/jimage.hpp
--- a/hotspot/src/share/vm/classfile/jimage.hpp	Mon Apr 25 09:59:07 2016 -0300
+++ b/hotspot/src/share/vm/classfile/jimage.hpp	Mon Apr 25 09:59:43 2016 -0300
@@ -179,3 +179,20 @@
 
 typedef void (*JImageResourceIterator_t)(JImageFile* jimage,
         JImageResourceVisitor_t visitor, void* arg);
+
+/*
+ * JIMAGE_ResourcePath- Given an open image file, a location reference, a buffer
+ * and a maximum buffer size, copy the path of the resource into the buffer.
+ * Returns false if not a valid location reference.
+ *
+ * Ex.
+ *   JImageLocationRef location = ...
+ *   char path[JIMAGE_MAX_PATH];
+ *    (*JImageResourcePath)(image, location, path, JIMAGE_MAX_PATH);
+ */
+extern "C" bool JIMAGE_ResourcePath(JImageFile* image, JImageLocationRef locationRef,
+                                    char* path, size_t max);
+
+typedef bool (*JImage_ResourcePath_t)(JImageFile* jimage, JImageLocationRef location,
+        char* buffer, jlong size);
+