Remove empty lines

[oota-llvm.git] / lib / Support / Unix / Signals.inc

diff --git a/lib/Support/Unix/Signals.inc b/lib/Support/Unix/Signals.inc
index 94336305d8473126dcef45683f1cba2c06c19ac8..9176cd14812a0738816af5e18becb140c66c48a8 100644 (file)
--- a/lib/Support/Unix/Signals.inc
+++ b/lib/Support/Unix/Signals.inc
@@ -113,7 +113,7 @@ static void RegisterHandlers() {
   // during handling an actual signal because you can't safely call new in a
   // signal handler.
   *SignalsMutex;
-  
+
   // If the handlers are already registered, we're done.
   if (NumRegisteredSignals != 0) return;
 
@@ -157,7 +157,7 @@ static void RemoveFilesToRemove() {
     // super-user permissions.
     if (!S_ISREG(buf.st_mode))
       continue;
-  
+
     // Otherwise, remove the file. We ignore any errors here as there is nothing
     // else we can do.
     unlink(path);
@@ -291,7 +291,8 @@ static int dl_iterate_phdr_cb(dl_phdr_info *info, size_t size, void *arg) {
 
 static bool findModulesAndOffsets(void **StackTrace, int Depth,
                                   const char **Modules, intptr_t *Offsets,
-                                  const char *MainExecutableName) {
+                                  const char *MainExecutableName,
+                                  StringSaver &StrPool) {
   DlIteratePhdrData data = {StackTrace, Depth,   true,
                             Modules,    Offsets, MainExecutableName};
   dl_iterate_phdr(dl_iterate_phdr_cb, &data);
@@ -304,92 +305,6 @@ static bool findModulesAndOffsets(void **StackTrace, int Depth,
   return false;
 }
 #endif
-
-static bool printSymbolizedStackTrace(void **StackTrace, int Depth,
-                                      llvm::raw_ostream &OS) {
-  // FIXME: Subtract necessary number from StackTrace entries to turn return addresses
-  // into actual instruction addresses.
-  // Use llvm-symbolizer tool to symbolize the stack traces.
-  ErrorOr<std::string> LLVMSymbolizerPathOrErr =
-      sys::findProgramByName("llvm-symbolizer");
-  if (!LLVMSymbolizerPathOrErr)
-    return false;
-  const std::string &LLVMSymbolizerPath = *LLVMSymbolizerPathOrErr;
-  // We don't know argv0 or the address of main() at this point, but try
-  // to guess it anyway (it's possible on some platforms).
-  std::string MainExecutableName = sys::fs::getMainExecutable(nullptr, nullptr);
-  if (MainExecutableName.empty() ||
-      MainExecutableName.find("llvm-symbolizer") != std::string::npos)
-    return false;
-
-  std::vector<const char *> Modules(Depth, nullptr);
-  std::vector<intptr_t> Offsets(Depth, 0);
-  if (!findModulesAndOffsets(StackTrace, Depth, Modules.data(), Offsets.data(),
-                             MainExecutableName.c_str()))
-    return false;
-  int InputFD;
-  SmallString<32> InputFile, OutputFile;
-  sys::fs::createTemporaryFile("symbolizer-input", "", InputFD, InputFile);
-  sys::fs::createTemporaryFile("symbolizer-output", "", OutputFile);
-  FileRemover InputRemover(InputFile.c_str());
-  FileRemover OutputRemover(OutputFile.c_str());
-
-  {
-    raw_fd_ostream Input(InputFD, true);
-    for (int i = 0; i < Depth; i++) {
-      if (Modules[i])
-        Input << Modules[i] << " " << (void*)Offsets[i] << "\n";
-    }
-  }
-
-  StringRef InputFileStr(InputFile);
-  StringRef OutputFileStr(OutputFile);
-  StringRef StderrFileStr;
-  const StringRef *Redirects[] = {&InputFileStr, &OutputFileStr,
-                                  &StderrFileStr};
-  const char *Args[] = {"llvm-symbolizer", "--functions=linkage", "--inlining",
-                        "--demangle", nullptr};
-  int RunResult =
-      sys::ExecuteAndWait(LLVMSymbolizerPath, Args, nullptr, Redirects);
-  if (RunResult != 0)
-    return false;
-
-  auto OutputBuf = MemoryBuffer::getFile(OutputFile.c_str());
-  if (!OutputBuf)
-    return false;
-  StringRef Output = OutputBuf.get()->getBuffer();
-  SmallVector<StringRef, 32> Lines;
-  Output.split(Lines, "\n");
-  auto CurLine = Lines.begin();
-  int frame_no = 0;
-  for (int i = 0; i < Depth; i++) {
-    if (!Modules[i]) {
-      OS << format("#%d %p\n", frame_no++, StackTrace[i]);
-      continue;
-    }
-    // Read pairs of lines (function name and file/line info) until we
-    // encounter empty line.
-    for (;;) {
-      if (CurLine == Lines.end())
-        return false;
-      StringRef FunctionName = *CurLine++;
-      if (FunctionName.empty())
-        break;
-      OS << format("#%d %p ", frame_no++, StackTrace[i]);
-      if (!FunctionName.startswith("??"))
-        OS << format("%s ", FunctionName.str().c_str());
-      if (CurLine == Lines.end())
-        return false;
-      StringRef FileLineInfo = *CurLine++;
-      if (!FileLineInfo.startswith("??"))
-        OS << format("%s", FileLineInfo.str().c_str());
-      else
-        OS << format("(%s+%p)", Modules[i], (void *)Offsets[i]);
-      OS << "\n";
-    }
-  }
-  return true;
-}
 #endif // defined(HAVE_BACKTRACE) && defined(ENABLE_BACKTRACES)
 
 // PrintStackTrace - In the case of a program crash or fault, print out a stack