Imported Upstream version 7u21-2.3.9upstream/7u21-2.3.9upstream

1 files changed, 190 insertions, 0 deletions

diff --git a/scripts/jni_create_stap.c b/scripts/jni_create_stap.c
new file mode 100644
index 0000000..0691527
--- /dev/null
+++ b/scripts/jni_create_stap.c
@@ -0,0 +1,190 @@
+/* jni_create_stap.c -- Parses jni_desc into hotspot_jni.stp.in
+   Copyright (C) 2009  Red Hat, Inc.
+
+This file is part of IcedTea.
+
+IcedTea is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+IcedTea is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with IcedTea; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+*/
+
+// g++ -o jni_create_stap jni_create_stap
+// ./jni_create_stap < jni_desc > hotspot_jni.stp.in
+// (Don't forget to add header plus documentation)
+
+// data file:
+// JNIProbeName<space>Description
+// arg1_name<space><type><space>Description
+// arg2_name...
+// [ret<space><type><space>Description]
+// blank line
+//
+// Notes:
+// JNIProbeName doesn't include __entry or __return.
+// ret is the the return argument (if there is a __return probe)
+// <type>/representation is one of:
+// v - void, s - string, x - hex number, d - number
+// void is only used for return ret arguments.
+
+#include <iostream>
+#include <iterator>
+#include <string>
+#include <vector>
+using namespace std;
+
+struct probe
+{
+  string name;
+  string desc;
+  vector<string> args;
+  vector<char> types;
+  vector<string> descs;
+};
+
+int
+main()
+{
+  vector<probe> probes;
+
+  string line;
+  size_t index;
+  while (getline (cin, line))
+    {
+      if (line.size () == 0 || line[0] == '#')
+	continue;
+      probe p;
+      // probe name and description
+      index = line.find (' ');
+      p.name = line.substr (0, index);
+      p.desc = line.substr (index + 1);
+      
+      // arguments
+      while (getline (cin, line) && line.size () != 0)
+	{
+	  if (line[0] == '#')
+	    continue;
+	  
+	  index = line.find (' ');
+	  p.args.push_back (line.substr (0, index));
+	  p.types.push_back (line[index + 1]);
+	  p.descs.push_back (line.substr (index + 3));
+	}
+
+      probes.push_back (p);
+    }
+
+  vector<probe>::iterator it = probes.begin();
+  while (it != probes.end())
+    {
+      // Output probe entry
+      probe p = *it;
+      cout << "/* hotspot.jni." << p.name << endl;
+      cout << " * " << p.desc << endl;
+      cout << " *" << endl;
+      for (index = 0; index < p.args.size (); index++)
+	{
+	  if (p.args[index] == "ret")
+	    continue;
+	  cout << " * " << p.args[index] << " - " << p.descs[index] << endl;
+	}
+      cout << " */" << endl;
+      cout << "probe hotspot.jni." << p.name << " =" << endl;
+      cout << "  process(\"@ABS_CLIENT_LIBJVM_SO@\").mark(\""
+	   << p.name << "__entry" << "\")," << endl;
+      cout << "  process(\"@ABS_SERVER_LIBJVM_SO@\").mark(\""
+	   << p.name << "__entry" << "\")" << endl;
+      cout << "{" << endl;
+      cout << "  name = \"" << p.name << '"' << endl;
+      for (index = 0; index < p.args.size (); index++)
+	{
+	  if (p.args[index] == "ret")
+	    continue;
+	  cout << "  " << p.args[index] << " = ";
+	  if (p.types[index] == 's')
+	    cout << "user_string(" << "$arg" << (index + 1) << ")" << endl;
+	  else
+	    cout << "$arg" << (index + 1) << endl;
+	}
+      cout << "  probestr = sprintf(\"%s(";
+      for (index = 0; index < p.args.size (); index++)
+	{
+	  if (p.args[index] == "ret")
+            continue;
+	  cout << p.args[index] << '=';
+	  if (p.types[index] == 's')
+	    cout << "'%s'";
+	  else if (p.types[index] == 'x')
+	    cout << "0x%x";
+	  else
+	    cout << "%" << p.types[index];
+	  if (index != p.args.size () - 1 && p.args[index + 1] != "ret")
+	    cout << ',';
+	}
+      cout << ")\", name";
+      for (index = 0; index < p.args.size (); index++)
+        {
+          if (p.args[index] == "ret")
+            continue;
+	  cout << ", " << p.args[index];
+	}
+      cout << ")" << endl;
+      cout << "}" << endl;
+
+      // Output return probe if it exists
+      if (p.args.size () > 0 && p.args[p.args.size () - 1] == "ret")
+	{
+	  char type = p.types[p.args.size () - 1];
+	  cout << endl;
+	  cout << "/* hotspot.jni." << p.name << ".return" << endl;
+	  cout << " * " << p.desc << " Return." << endl;
+	  if (type != 'v')
+	    {
+	      cout << " *" << endl;
+	      cout << " * ret - " << p.descs[p.args.size() - 1] << endl;
+	    }
+	  cout << " */" << endl;
+
+	  cout << "probe hotspot.jni." << p.name << ".return =" << endl;
+	  cout << "  process(\"@ABS_CLIENT_LIBJVM_SO@\").mark(\""
+	       << p.name << "__return" << "\")," << endl;
+	  cout << "  process(\"@ABS_SERVER_LIBJVM_SO@\").mark(\""
+	       << p.name << "__return" << "\")" << endl;
+	  cout << "{" << endl;
+	  cout << "  name = \"" << p.name << '"' << endl;
+	  if (type == 's')
+	    {
+	      cout << "  ret = user_string($arg1)" << endl;
+	      cout << "  retstr = ret" << endl;
+	    }
+	  else if (type == 'x')
+	    {
+	      cout << "  ret = $arg1" << endl;
+	      cout << "  retstr = sprintf(\"0x%x\", ret)" << endl;
+	    }
+	  else if (type != 'v')
+	    {
+	      cout << "  ret = $arg1" << endl;
+	      cout << "  retstr = sprint(ret)" << endl;
+	    }
+	  else
+	    {
+	      cout << "  retstr = \"\"" << endl;
+	    }
+	  cout << "}" << endl;
+	}
+
+      cout << endl;
+      ++it;
+    }
+}