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//===--- 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/CompilerDriver/Error.h"
#include "llvm/CompilerDriver/Main.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Program.h"
#include "llvm/System/TimeValue.h"
#include <stdexcept>
#include <string>
using namespace llvm;
using namespace llvmc;
namespace llvmc {
extern const char* ProgramName;
}
namespace {
void PrintString (const std::string& str) {
errs() << str << ' ';
}
void PrintCommand (const std::string& Cmd, const StrVector& Args) {
errs() << Cmd << ' ';
std::for_each(Args.begin(), Args.end(), &PrintString);
errs() << '\n';
}
bool IsSegmentationFault (int returnCode) {
#ifdef LLVM_ON_WIN32
return (returnCode >= 0xc0000000UL)
#else
return (returnCode < 0);
#endif
}
int ExecuteProgram (const std::string& name, const StrVector& args) {
sys::Path prog(name);
if (!prog.isAbsolute()) {
prog = PrependMainExecutablePath(name, ProgramName,
(void *)(intptr_t)&Main);
if (!prog.canExecute()) {
prog = sys::Program::FindProgramByName(name);
if (prog.isEmpty()) {
PrintError("Can't find program '" + name + "'");
return -1;
}
}
}
if (!prog.canExecute()) {
PrintError("Program '" + name + "' is not executable.");
return -1;
}
// 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.
int ret = sys::Program::ExecuteAndWait(prog, &argv[0], 0, &redirects[0]);
if (IsSegmentationFault(ret)) {
errs() << "Segmentation fault: ";
PrintCommand(name, args);
}
return ret;
}
}
namespace llvmc {
void AppendToGlobalTimeLog (const std::string& cmd, double time);
}
int llvmc::Action::Execute () const {
if (DryRun || VerboseMode)
PrintCommand(Command_, Args_);
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;
}
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