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//===-- Program.cpp - Implement OS Program Concept --------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the operating system Program concept.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Program.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/raw_ostream.h"
#include <system_error>
using namespace llvm;
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only TRULY operating system
//=== independent code.
//===----------------------------------------------------------------------===//
static bool Execute(ProcessInfo &PI, StringRef Program,
ArrayRef<StringRef> Args, Optional<ArrayRef<StringRef>> Env,
ArrayRef<Optional<StringRef>> Redirects,
unsigned MemoryLimit, std::string *ErrMsg,
BitVector *AffinityMask);
int sys::ExecuteAndWait(StringRef Program, ArrayRef<StringRef> Args,
Optional<ArrayRef<StringRef>> Env,
ArrayRef<Optional<StringRef>> Redirects,
unsigned SecondsToWait, unsigned MemoryLimit,
std::string *ErrMsg, bool *ExecutionFailed,
Optional<ProcessStatistics> *ProcStat,
BitVector *AffinityMask) {
assert(Redirects.empty() || Redirects.size() == 3);
ProcessInfo PI;
if (Execute(PI, Program, Args, Env, Redirects, MemoryLimit, ErrMsg,
AffinityMask)) {
if (ExecutionFailed)
*ExecutionFailed = false;
ProcessInfo Result =
Wait(PI, SecondsToWait, /*WaitUntilTerminates=*/SecondsToWait == 0,
ErrMsg, ProcStat);
return Result.ReturnCode;
}
if (ExecutionFailed)
*ExecutionFailed = true;
return -1;
}
ProcessInfo sys::ExecuteNoWait(StringRef Program, ArrayRef<StringRef> Args,
Optional<ArrayRef<StringRef>> Env,
ArrayRef<Optional<StringRef>> Redirects,
unsigned MemoryLimit, std::string *ErrMsg,
bool *ExecutionFailed, BitVector *AffinityMask) {
assert(Redirects.empty() || Redirects.size() == 3);
ProcessInfo PI;
if (ExecutionFailed)
*ExecutionFailed = false;
if (!Execute(PI, Program, Args, Env, Redirects, MemoryLimit, ErrMsg,
AffinityMask))
if (ExecutionFailed)
*ExecutionFailed = true;
return PI;
}
bool sys::commandLineFitsWithinSystemLimits(StringRef Program,
ArrayRef<const char *> Args) {
SmallVector<StringRef, 8> StringRefArgs;
StringRefArgs.reserve(Args.size());
for (const char *A : Args)
StringRefArgs.emplace_back(A);
return commandLineFitsWithinSystemLimits(Program, StringRefArgs);
}
void sys::printArg(raw_ostream &OS, StringRef Arg, bool Quote) {
const bool Escape = Arg.find_first_of(" \"\\$") != StringRef::npos;
if (!Quote && !Escape) {
OS << Arg;
return;
}
// Quote and escape. This isn't really complete, but good enough.
OS << '"';
for (const auto c : Arg) {
if (c == '"' || c == '\\' || c == '$')
OS << '\\';
OS << c;
}
OS << '"';
}
// Include the platform-specific parts of this class.
#ifdef LLVM_ON_UNIX
#include "Unix/Program.inc"
#endif
#ifdef _WIN32
#include "Windows/Program.inc"
#endif
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