forked from OSchip/llvm-project
178 lines
5.3 KiB
C++
178 lines
5.3 KiB
C++
//===--- Compilation.cpp - Compilation Task Implementation --------------*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/ArgList.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/ToolChain.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/System/Program.h"
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#include <sys/stat.h>
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#include <errno.h>
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using namespace clang::driver;
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Compilation::Compilation(Driver &D,
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ToolChain &_DefaultToolChain,
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ArgList *_Args)
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: TheDriver(D), DefaultToolChain(_DefaultToolChain), Args(_Args) {
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}
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Compilation::~Compilation() {
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delete Args;
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// Free any derived arg lists.
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for (llvm::DenseMap<const ToolChain*, ArgList*>::iterator
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it = TCArgs.begin(), ie = TCArgs.end(); it != ie; ++it) {
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ArgList *A = it->second;
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if (A != Args)
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delete Args;
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}
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// Free the actions, if built.
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for (ActionList::iterator it = Actions.begin(), ie = Actions.end();
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it != ie; ++it)
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delete *it;
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}
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const ArgList &Compilation::getArgsForToolChain(const ToolChain *TC) {
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if (!TC)
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TC = &DefaultToolChain;
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ArgList *&Entry = TCArgs[TC];
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if (!Entry)
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Entry = TC->TranslateArgs(*Args);
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return *Entry;
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}
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void Compilation::PrintJob(llvm::raw_ostream &OS, const Job &J,
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const char *Terminator, bool Quote) const {
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if (const Command *C = dyn_cast<Command>(&J)) {
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OS << " \"" << C->getExecutable() << '"';
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for (ArgStringList::const_iterator it = C->getArguments().begin(),
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ie = C->getArguments().end(); it != ie; ++it) {
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if (Quote)
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OS << " \"" << *it << '"';
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else
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OS << ' ' << *it;
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}
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OS << Terminator;
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} else if (const PipedJob *PJ = dyn_cast<PipedJob>(&J)) {
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for (PipedJob::const_iterator
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it = PJ->begin(), ie = PJ->end(); it != ie; ++it)
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PrintJob(OS, **it, (it + 1 != PJ->end()) ? " |\n" : "\n", Quote);
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} else {
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const JobList *Jobs = cast<JobList>(&J);
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for (JobList::const_iterator
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it = Jobs->begin(), ie = Jobs->end(); it != ie; ++it)
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PrintJob(OS, **it, Terminator, Quote);
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}
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}
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bool Compilation::CleanupFileList(const ArgStringList &Files,
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bool IssueErrors) const {
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bool Success = true;
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for (ArgStringList::const_iterator
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it = Files.begin(), ie = Files.end(); it != ie; ++it) {
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llvm::sys::Path P(*it);
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std::string Error;
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if (P.eraseFromDisk(false, &Error)) {
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// Failure is only failure if the file doesn't exist. There is a
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// race condition here due to the limited interface of
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// llvm::sys::Path, we want to know if the removal gave E_NOENT.
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// FIXME: Grumble, P.exists() is broken. PR3837.
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struct stat buf;
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if (::stat(P.c_str(), &buf) == 0
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|| errno != ENOENT) {
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if (IssueErrors)
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getDriver().Diag(clang::diag::err_drv_unable_to_remove_file)
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<< Error;
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Success = false;
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}
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}
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}
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return Success;
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}
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int Compilation::ExecuteCommand(const Command &C) const {
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llvm::sys::Path Prog(C.getExecutable());
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const char **Argv = new const char*[C.getArguments().size() + 2];
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Argv[0] = C.getExecutable();
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std::copy(C.getArguments().begin(), C.getArguments().end(), Argv+1);
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Argv[C.getArguments().size() + 1] = 0;
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if (getDriver().CCCEcho || getArgs().hasArg(options::OPT_v))
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PrintJob(llvm::errs(), C, "\n", false);
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std::string Error;
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int Res =
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llvm::sys::Program::ExecuteAndWait(Prog, Argv,
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/*env*/0, /*redirects*/0,
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/*secondsToWait*/0, /*memoryLimit*/0,
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&Error);
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if (!Error.empty()) {
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assert(Res && "Error string set with 0 result code!");
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getDriver().Diag(clang::diag::err_drv_command_failure) << Error;
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}
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delete[] Argv;
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return Res;
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}
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int Compilation::ExecuteJob(const Job &J) const {
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if (const Command *C = dyn_cast<Command>(&J)) {
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return ExecuteCommand(*C);
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} else if (const PipedJob *PJ = dyn_cast<PipedJob>(&J)) {
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// Piped commands with a single job are easy.
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if (PJ->size() == 1)
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return ExecuteCommand(**PJ->begin());
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getDriver().Diag(clang::diag::err_drv_unsupported_opt) << "-pipe";
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return 1;
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} else {
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const JobList *Jobs = cast<JobList>(&J);
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for (JobList::const_iterator
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it = Jobs->begin(), ie = Jobs->end(); it != ie; ++it)
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if (int Res = ExecuteJob(**it))
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return Res;
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return 0;
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}
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}
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int Compilation::Execute() const {
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// Just print if -### was present.
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if (getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
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PrintJob(llvm::errs(), Jobs, "\n", true);
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return 0;
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}
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// If there were errors building the compilation, quit now.
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if (getDriver().getDiags().getNumErrors())
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return 1;
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int Res = ExecuteJob(Jobs);
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// Remove temp files.
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CleanupFileList(TempFiles);
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// If the compilation failed, remove result files as well.
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if (Res != 0)
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CleanupFileList(ResultFiles, true);
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return Res;
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}
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