lib/Support/GraphWriter.cpp

   1 //===-- GraphWriter.cpp - Implements GraphWriter support routines ---------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // 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/Support/Streams.h"
  16 #include "llvm/System/Path.h"
  17 #include "llvm/System/Program.h"
  18 #include "llvm/Config/config.h"
  19 using namespace llvm;
  20
  21 void llvm::DisplayGraph(const sys::Path &Filename) {
  22   std::string ErrMsg;
  23 #if HAVE_GRAPHVIZ
  24   sys::Path Graphviz(LLVM_PATH_GRAPHVIZ);
  25
  26   std::vector<const char*> args;
  27   args.push_back(Graphviz.c_str());
  28   args.push_back(Filename.c_str());
  29   args.push_back(0);
  30
  31   cerr << "Running 'Graphviz' program... " << std::flush;
  32   if (sys::Program::ExecuteAndWait(Graphviz, &args[0],0,0,0,0,&ErrMsg)) {
  33     cerr << "Error viewing graph: " << ErrMsg << "\n";
  34   }
  35 #elif (HAVE_GV && HAVE_DOT)
  36   sys::Path PSFilename = Filename;
  37   PSFilename.appendSuffix("ps");
  38
  39   sys::Path dot(LLVM_PATH_DOT);
  40
  41   std::vector<const char*> args;
  42   args.push_back(dot.c_str());
  43   args.push_back("-Tps");
  44   args.push_back("-Nfontname=Courier");
  45   args.push_back("-Gsize=7.5,10");
  46   args.push_back(Filename.c_str());
  47   args.push_back("-o");
  48   args.push_back(PSFilename.c_str());
  49   args.push_back(0);
  50
  51   cerr << "Running 'dot' program... " << std::flush;
  52   if (sys::Program::ExecuteAndWait(dot, &args[0],0,0,0,0,&ErrMsg)) {
  53     cerr << "Error viewing graph: '" << ErrMsg << "\n";
  54   } else {
  55     cerr << " done. \n";
  56
  57     sys::Path gv(LLVM_PATH_GV);
  58     args.clear();
  59     args.push_back(gv.c_str());
  60     args.push_back(PSFilename.c_str());
  61     args.push_back("-spartan");
  62     args.push_back(0);
  63
  64     ErrMsg.clear();
  65     if (sys::Program::ExecuteAndWait(gv, &args[0],0,0,0,0,&ErrMsg)) {
  66       cerr << "Error viewing graph: " << ErrMsg << "\n";
  67     }
  68   }
  69   PSFilename.eraseFromDisk();
  70 #elif HAVE_DOTTY
  71   sys::Path dotty(LLVM_PATH_DOTTY);
  72
  73   std::vector<const char*> args;
  74   args.push_back(dotty.c_str());
  75   args.push_back(Filename.c_str());
  76   args.push_back(0);
  77
  78   cerr << "Running 'dotty' program... " << std::flush;
  79   if (sys::Program::ExecuteAndWait(dotty, &args[0],0,0,0,0,&ErrMsg)) {
  80     cerr << "Error viewing graph: " << ErrMsg << "\n";
  81   } else {
  82 #ifdef __MINGW32__ // Dotty spawns another app and doesn't wait until it returns
  83     return;
  84 #endif
  85   }
  86 #endif
  87
  88   Filename.eraseFromDisk();
  89 }