lib/Support/GraphWriter.cpp

   1 //===-- GraphWriter.cpp - Implements GraphWriter support routines ---------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by the LLVM research group and is distributed under
   6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file implements misc. GraphWriter support routines.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Support/GraphWriter.h"
  15 #include "llvm/System/Path.h"
  16 #include "llvm/System/Program.h"
  17 #include "llvm/Config/config.h"
  18 #include <iostream>
  19 using namespace llvm;
  20
  21 void llvm::DisplayGraph(const sys::Path &Filename) {
  22 #if HAVE_GRAPHVIZ
  23   sys::Path Graphviz(LLVM_PATH_GRAPHVIZ);
  24
  25   std::vector<const char*> args;
  26   args.push_back(Graphviz.c_str());
  27   args.push_back(Filename.c_str());
  28   args.push_back(0);
  29
  30   std::cerr << "Running 'Graphviz' program... " << std::flush;
  31   if (sys::Program::ExecuteAndWait(Graphviz, &args[0])) {
  32     std::cerr << "Error viewing graph: 'Graphviz' not in path?\n";
  33   }
  34 #elif (HAVE_GV && HAVE_DOT)
  35   sys::Path PSFilename = Filename;
  36   PSFilename.appendSuffix("ps");
  37
  38   sys::Path dot(LLVM_PATH_DOT);
  39
  40   std::vector<const char*> args;
  41   args.push_back(dot.c_str());
  42   args.push_back("-Tps");
  43   args.push_back("-Nfontname=Courier");
  44   args.push_back("-Gsize=7.5,10");
  45   args.push_back(Filename.c_str());
  46   args.push_back("-o");
  47   args.push_back(PSFilename.c_str());
  48   args.push_back(0);
  49
  50   std::cerr << "Running 'dot' program... " << std::flush;
  51   if (sys::Program::ExecuteAndWait(dot, &args[0])) {
  52     std::cerr << "Error viewing graph: 'dot' not in path?\n";
  53   } else {
  54     std::cerr << " done. \n";
  55
  56     sys::Path gv(LLVM_PATH_GV);
  57     args.clear();
  58     args.push_back(gv.c_str());
  59     args.push_back(PSFilename.c_str());
  60     args.push_back(0);
  61
  62     sys::Program::ExecuteAndWait(gv, &args[0]);
  63   }
  64   PSFilename.eraseFromDisk();
  65 #elif HAVE_DOTTY
  66   sys::Path dotty(LLVM_PATH_DOTTY);
  67
  68   std::vector<const char*> args;
  69   args.push_back(Filename.c_str());
  70   args.push_back(0);
  71
  72   std::cerr << "Running 'dotty' program... " << std::flush;
  73   if (sys::Program::ExecuteAndWait(dotty, &args[0])) {
  74     std::cerr << "Error viewing graph: 'dotty' not in path?\n";
  75   } else {
  76 #ifdef __MINGW32__ // Dotty spawns another app and doesn't wait until it returns.
  77     return;
  78 #endif
  79   }
  80 #endif
  81
  82   Filename.eraseFromDisk();
  83 }