Check in LLVM r95781.

1 files changed, 94 insertions, 0 deletions

diff --git a/lib/CompilerDriver/Action.cpp b/lib/CompilerDriver/Action.cpp
new file mode 100644
index 0000000..7bcd30a
--- /dev/null
+++ b/lib/CompilerDriver/Action.cpp
@@ -0,0 +1,94 @@
+//===--- Action.cpp - The LLVM Compiler Driver ------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open
+// Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Action class - implementation and auxiliary functions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CompilerDriver/Action.h"
+#include "llvm/CompilerDriver/BuiltinOptions.h"
+
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Program.h"
+#include "llvm/System/TimeValue.h"
+
+#include <stdexcept>
+#include <string>
+
+using namespace llvm;
+using namespace llvmc;
+
+namespace {
+  int ExecuteProgram(const std::string& name,
+                     const StrVector& args) {
+    sys::Path prog = sys::Program::FindProgramByName(name);
+
+    if (prog.isEmpty())
+      throw std::runtime_error("Can't find program '" + name + "'");
+    if (!prog.canExecute())
+      throw std::runtime_error("Program '" + name + "' is not executable.");
+
+    // Build the command line vector and the redirects array.
+    const sys::Path* redirects[3] = {0,0,0};
+    sys::Path stdout_redirect;
+
+    std::vector<const char*> argv;
+    argv.reserve((args.size()+2));
+    argv.push_back(name.c_str());
+
+    for (StrVector::const_iterator B = args.begin(), E = args.end();
+         B!=E; ++B) {
+      if (*B == ">") {
+        ++B;
+        stdout_redirect.set(*B);
+        redirects[1] = &stdout_redirect;
+      }
+      else {
+        argv.push_back((*B).c_str());
+      }
+    }
+    argv.push_back(0);  // null terminate list.
+
+    // Invoke the program.
+    return sys::Program::ExecuteAndWait(prog, &argv[0], 0, &redirects[0]);
+  }
+
+  void print_string (const std::string& str) {
+    errs() << str << ' ';
+  }
+}
+
+namespace llvmc {
+  void AppendToGlobalTimeLog(const std::string& cmd, double time);
+}
+
+int llvmc::Action::Execute() const {
+  if (DryRun || VerboseMode) {
+    errs() << Command_ << " ";
+    std::for_each(Args_.begin(), Args_.end(), print_string);
+    errs() << '\n';
+  }
+  if (!DryRun) {
+    if (Time) {
+      sys::TimeValue now = sys::TimeValue::now();
+      int ret = ExecuteProgram(Command_, Args_);
+      sys::TimeValue now2 = sys::TimeValue::now();
+      now2 -= now;
+      double elapsed = now2.seconds()  + now2.microseconds()  / 1000000.0;
+      AppendToGlobalTimeLog(Command_, elapsed);
+
+      return ret;
+    }
+    else {
+      return ExecuteProgram(Command_, Args_);
+    }
+  }
+
+  return 0;
+}