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737 lines
20 KiB
737 lines
20 KiB
/*
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ninja's subprocess.h
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*/
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// Copyright 2012 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef NINJA_SUBPROCESS_H_
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#define NINJA_SUBPROCESS_H_
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#include <string>
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#include <vector>
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#include <queue>
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#include <cstdio>
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#include <algorithm>
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#ifdef _WIN32
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#include <windows.h>
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#else
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#include <signal.h>
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#endif
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#if defined(_WIN64)
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typedef unsigned __int64 cmULONG_PTR;
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#else
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typedef unsigned long cmULONG_PTR;
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#endif
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//#include "exit_status.h"
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enum ExitStatus {
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ExitSuccess,
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ExitFailure,
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ExitInterrupted
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};
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/// Subprocess wraps a single async subprocess. It is entirely
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/// passive: it expects the caller to notify it when its fds are ready
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/// for reading, as well as call Finish() to reap the child once done()
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/// is true.
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struct Subprocess {
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~Subprocess();
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/// Returns ExitSuccess on successful process exit, ExitInterrupted if
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/// the process was interrupted, ExitFailure if it otherwise failed.
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ExitStatus Finish();
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bool Done() const;
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const std::string& GetOutput() const;
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int ExitCode() const { return exit_code_; }
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private:
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Subprocess();
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bool Start(struct SubprocessSet* set, const std::string& command,
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const std::string& dir);
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void OnPipeReady();
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std::string buf_;
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#ifdef _WIN32
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/// Set up pipe_ as the parent-side pipe of the subprocess; return the
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/// other end of the pipe, usable in the child process.
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HANDLE SetupPipe(HANDLE ioport);
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PROCESS_INFORMATION child_;
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HANDLE pipe_;
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OVERLAPPED overlapped_;
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char overlapped_buf_[4 << 10];
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bool is_reading_;
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int exit_code_;
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#else
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int fd_;
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pid_t pid_;
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#endif
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friend struct SubprocessSet;
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};
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/// SubprocessSet runs a ppoll/pselect() loop around a set of Subprocesses.
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/// DoWork() waits for any state change in subprocesses; finished_
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/// is a queue of subprocesses as they finish.
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struct SubprocessSet {
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SubprocessSet();
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~SubprocessSet();
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Subprocess* Add(const std::string& command, const std::string& dir);
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bool DoWork();
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Subprocess* NextFinished();
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void Clear();
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std::vector<Subprocess*> running_;
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std::queue<Subprocess*> finished_;
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#ifdef _WIN32
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static BOOL WINAPI NotifyInterrupted(DWORD dwCtrlType);
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static HANDLE ioport_;
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#else
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static void SetInterruptedFlag(int signum);
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static bool interrupted_;
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struct sigaction old_act_;
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sigset_t old_mask_;
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#endif
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};
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#endif // NINJA_SUBPROCESS_H_
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/*
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ninja's util functions
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*/
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static void Fatal(const char* msg, ...) {
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va_list ap;
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fprintf(stderr, "ninja: FATAL: ");
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va_start(ap, msg);
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vfprintf(stderr, msg, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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#ifdef _WIN32
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// On Windows, some tools may inject extra threads.
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// exit() may block on locks held by those threads, so forcibly exit.
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fflush(stderr);
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fflush(stdout);
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ExitProcess(1);
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#else
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exit(1);
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#endif
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}
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#ifdef _WIN32
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std::string GetLastErrorString() {
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DWORD err = GetLastError();
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char* msg_buf;
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FormatMessageA(
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FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL,
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err,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(char*)&msg_buf,
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0,
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NULL);
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std::string msg = msg_buf;
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LocalFree(msg_buf);
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return msg;
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}
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#endif
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#define snprintf _snprintf
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/*
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ninja's subprocess-win32.cc
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*/
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// Copyright 2012 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//#include "subprocess.h"
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#include <stdio.h>
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#include <algorithm>
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//#include "util.h"
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namespace {
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void Win32Fatal(const char* function) {
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Fatal("%s: %s", function, GetLastErrorString().c_str());
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}
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} // anonymous namespace
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Subprocess::Subprocess() : overlapped_(), is_reading_(false),
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exit_code_(1) {
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child_.hProcess = NULL;
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}
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Subprocess::~Subprocess() {
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if (pipe_) {
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if (!CloseHandle(pipe_))
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Win32Fatal("CloseHandle");
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}
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// Reap child if forgotten.
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if (child_.hProcess)
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Finish();
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}
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HANDLE Subprocess::SetupPipe(HANDLE ioport) {
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char pipe_name[100];
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snprintf(pipe_name, sizeof(pipe_name),
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"\\\\.\\pipe\\ninja_pid%u_sp%p", GetCurrentProcessId(), this);
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pipe_ = ::CreateNamedPipeA(pipe_name,
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PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED,
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PIPE_TYPE_BYTE,
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PIPE_UNLIMITED_INSTANCES,
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0, 0, INFINITE, NULL);
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if (pipe_ == INVALID_HANDLE_VALUE)
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Win32Fatal("CreateNamedPipe");
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if (!CreateIoCompletionPort(pipe_, ioport, (cmULONG_PTR)this, 0))
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Win32Fatal("CreateIoCompletionPort");
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memset(&overlapped_, 0, sizeof(overlapped_));
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if (!ConnectNamedPipe(pipe_, &overlapped_) &&
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GetLastError() != ERROR_IO_PENDING) {
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Win32Fatal("ConnectNamedPipe");
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}
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// Get the write end of the pipe as a handle inheritable across processes.
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HANDLE output_write_handle = CreateFile(pipe_name, GENERIC_WRITE, 0,
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NULL, OPEN_EXISTING, 0, NULL);
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HANDLE output_write_child;
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if (!DuplicateHandle(GetCurrentProcess(), output_write_handle,
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GetCurrentProcess(), &output_write_child,
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0, TRUE, DUPLICATE_SAME_ACCESS)) {
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Win32Fatal("DuplicateHandle");
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}
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CloseHandle(output_write_handle);
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return output_write_child;
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}
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bool Subprocess::Start(SubprocessSet* set, const std::string& command,
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const std::string& dir) {
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HANDLE child_pipe = SetupPipe(set->ioport_);
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SECURITY_ATTRIBUTES security_attributes;
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memset(&security_attributes, 0, sizeof(SECURITY_ATTRIBUTES));
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security_attributes.nLength = sizeof(SECURITY_ATTRIBUTES);
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security_attributes.bInheritHandle = TRUE;
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// Must be inheritable so subprocesses can dup to children.
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HANDLE nul = CreateFile("NUL", GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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&security_attributes, OPEN_EXISTING, 0, NULL);
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if (nul == INVALID_HANDLE_VALUE)
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Fatal("couldn't open nul");
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STARTUPINFOA startup_info;
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memset(&startup_info, 0, sizeof(startup_info));
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startup_info.cb = sizeof(STARTUPINFO);
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startup_info.dwFlags = STARTF_USESTDHANDLES;
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startup_info.hStdInput = nul;
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startup_info.hStdOutput = child_pipe;
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startup_info.hStdError = child_pipe;
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PROCESS_INFORMATION process_info;
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memset(&process_info, 0, sizeof(process_info));
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// Do not prepend 'cmd /c' on Windows, this breaks command
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// lines greater than 8,191 chars.
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if (!CreateProcessA(NULL, (char*)command.c_str(), NULL, NULL,
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/* inherit handles */ TRUE, CREATE_NEW_PROCESS_GROUP,
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NULL, (dir.empty() ? NULL : dir.c_str()),
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&startup_info, &process_info)) {
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DWORD error = GetLastError();
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if (error == ERROR_FILE_NOT_FOUND) {
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// file (program) not found error is treated
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// as a normal build action failure
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if (child_pipe)
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CloseHandle(child_pipe);
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CloseHandle(pipe_);
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CloseHandle(nul);
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pipe_ = NULL;
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// child_ is already NULL;
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buf_ =
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"CreateProcess failed: The system cannot find the file specified.\n";
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return true;
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} else {
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Win32Fatal("CreateProcess"); // pass all other errors to Win32Fatal
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}
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}
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// Close pipe channel only used by the child.
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if (child_pipe)
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CloseHandle(child_pipe);
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CloseHandle(nul);
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CloseHandle(process_info.hThread);
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child_ = process_info;
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return true;
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}
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void Subprocess::OnPipeReady() {
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DWORD bytes;
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if (!GetOverlappedResult(pipe_, &overlapped_, &bytes, TRUE)) {
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if (GetLastError() == ERROR_BROKEN_PIPE) {
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CloseHandle(pipe_);
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pipe_ = NULL;
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return;
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}
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Win32Fatal("GetOverlappedResult");
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}
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if (is_reading_ && bytes)
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buf_.append(overlapped_buf_, bytes);
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memset(&overlapped_, 0, sizeof(overlapped_));
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is_reading_ = true;
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if (!::ReadFile(pipe_, overlapped_buf_, sizeof(overlapped_buf_),
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&bytes, &overlapped_)) {
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if (GetLastError() == ERROR_BROKEN_PIPE) {
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CloseHandle(pipe_);
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pipe_ = NULL;
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return;
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}
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if (GetLastError() != ERROR_IO_PENDING)
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Win32Fatal("ReadFile");
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}
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// Even if we read any bytes in the readfile call, we'll enter this
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// function again later and get them at that point.
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}
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ExitStatus Subprocess::Finish() {
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if (!child_.hProcess)
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return ExitFailure;
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// TODO: add error handling for all of these.
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WaitForSingleObject(child_.hProcess, INFINITE);
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DWORD exit_code = 0;
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GetExitCodeProcess(child_.hProcess, &exit_code);
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CloseHandle(child_.hProcess);
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child_.hProcess = NULL;
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exit_code_ = exit_code;
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return exit_code == 0 ? ExitSuccess :
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exit_code == CONTROL_C_EXIT ? ExitInterrupted :
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ExitFailure;
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}
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bool Subprocess::Done() const {
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return pipe_ == NULL;
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}
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const std::string& Subprocess::GetOutput() const {
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return buf_;
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}
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HANDLE SubprocessSet::ioport_;
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SubprocessSet::SubprocessSet() {
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ioport_ = ::CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 1);
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if (!ioport_)
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Win32Fatal("CreateIoCompletionPort");
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if (!SetConsoleCtrlHandler(NotifyInterrupted, TRUE))
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Win32Fatal("SetConsoleCtrlHandler");
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}
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SubprocessSet::~SubprocessSet() {
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Clear();
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SetConsoleCtrlHandler(NotifyInterrupted, FALSE);
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CloseHandle(ioport_);
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}
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BOOL WINAPI SubprocessSet::NotifyInterrupted(DWORD dwCtrlType) {
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if (dwCtrlType == CTRL_C_EVENT || dwCtrlType == CTRL_BREAK_EVENT) {
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if (!PostQueuedCompletionStatus(ioport_, 0, 0, NULL))
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Win32Fatal("PostQueuedCompletionStatus");
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return TRUE;
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}
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return FALSE;
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}
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Subprocess *SubprocessSet::Add(const std::string& command,
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const std::string& dir) {
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Subprocess *subprocess = new Subprocess;
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if (!subprocess->Start(this, command, dir)) {
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delete subprocess;
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return 0;
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}
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if (subprocess->child_.hProcess)
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running_.push_back(subprocess);
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else
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finished_.push(subprocess);
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return subprocess;
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}
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bool SubprocessSet::DoWork() {
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DWORD bytes_read;
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Subprocess* subproc;
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OVERLAPPED* overlapped;
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if (!GetQueuedCompletionStatus(ioport_, &bytes_read, (cmULONG_PTR*)&subproc,
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&overlapped, INFINITE)) {
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if (GetLastError() != ERROR_BROKEN_PIPE)
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Win32Fatal("GetQueuedCompletionStatus");
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}
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if (!subproc) // A NULL subproc indicates that we were interrupted and is
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// delivered by NotifyInterrupted above.
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return true;
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subproc->OnPipeReady();
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if (subproc->Done()) {
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std::vector<Subprocess*>::iterator end =
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std::remove(running_.begin(), running_.end(), subproc);
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if (running_.end() != end) {
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finished_.push(subproc);
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running_.resize(end - running_.begin());
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}
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}
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return false;
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}
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Subprocess* SubprocessSet::NextFinished() {
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if (finished_.empty())
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return NULL;
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Subprocess* subproc = finished_.front();
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finished_.pop();
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return subproc;
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}
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void SubprocessSet::Clear() {
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std::vector<Subprocess*>::iterator it = running_.begin();
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for (; it != running_.end(); ++it) {
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if ((*it)->child_.hProcess) {
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if (!GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT,
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(*it)->child_.dwProcessId))
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Win32Fatal("GenerateConsoleCtrlEvent");
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}
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}
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it = running_.begin();
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for (; it != running_.end(); ++it)
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delete *it;
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running_.clear();
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}
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// Copyright 2011 Google Inc. All Rights Reserved.
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//
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|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
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|
|
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// Wrapper around cl that adds /showIncludes to command line, and uses that to
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// generate .d files that match the style from gcc -MD.
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//
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// /showIncludes is equivalent to -MD, not -MMD, that is, system headers are
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// included.
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#include <windows.h>
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#include <sstream>
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//#include "subprocess.h"
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//#include "util.h"
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// We don't want any wildcard expansion.
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// See http://msdn.microsoft.com/en-us/library/zay8tzh6(v=vs.85).aspx
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void _setargv() {}
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static void usage(const char* msg) {
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Fatal("%s\n\nusage:\n "
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"cmcldeps "
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"<language C, CXX or RC> "
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"<source file path> "
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"<output path for *.d file> "
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"<output path for *.obj file> "
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"<prefix of /showIncludes> "
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"<path to cl.exe> "
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"<path to tool (cl or rc)> "
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"<rest of command ...>\n", msg);
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}
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static std::string trimLeadingSpace(const std::string& cmdline) {
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int i = 0;
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for (; cmdline[i] == ' '; ++i)
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;
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return cmdline.substr(i);
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}
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static void doEscape(std::string& str, const std::string& search,
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const std::string& repl) {
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std::string::size_type pos = 0;
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while ((pos = str.find(search, pos)) != std::string::npos) {
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str.replace(pos, search.size(), repl);
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pos += repl.size();
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}
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}
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// Strips one argument from the cmdline and returns it. "surrounding quotes"
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// are removed from the argument if there were any.
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static std::string getArg(std::string& cmdline) {
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std::string ret;
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bool in_quoted = false;
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unsigned int i = 0;
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cmdline = trimLeadingSpace(cmdline);
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for (;; ++i) {
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if (i >= cmdline.size())
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usage("Couldn't parse arguments.");
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if (!in_quoted && cmdline[i] == ' ')
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break; // "a b" "x y"
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if (cmdline[i] == '"')
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in_quoted = !in_quoted;
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}
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ret = cmdline.substr(0, i);
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if (ret[0] == '"' && ret[i - 1] == '"')
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ret = ret.substr(1, ret.size() - 2);
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cmdline = cmdline.substr(i);
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return ret;
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}
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static void parseCommandLine(LPTSTR wincmdline,
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std::string& lang,
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std::string& srcfile,
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|
std::string& dfile,
|
|
std::string& objfile,
|
|
std::string& prefix,
|
|
std::string& clpath,
|
|
std::string& binpath,
|
|
std::string& rest) {
|
|
std::string cmdline(wincmdline);
|
|
/* self */ getArg(cmdline);
|
|
lang = getArg(cmdline);
|
|
srcfile = getArg(cmdline);
|
|
dfile = getArg(cmdline);
|
|
objfile = getArg(cmdline);
|
|
prefix = getArg(cmdline);
|
|
clpath = getArg(cmdline);
|
|
binpath = getArg(cmdline);
|
|
rest = trimLeadingSpace(cmdline);
|
|
}
|
|
|
|
static void outputDepFile(const std::string& dfile, const std::string& objfile,
|
|
std::vector<std::string>& incs) {
|
|
|
|
if (dfile.empty())
|
|
return;
|
|
|
|
// strip duplicates
|
|
std::sort(incs.begin(), incs.end());
|
|
incs.erase(std::unique(incs.begin(), incs.end()), incs.end());
|
|
|
|
FILE* out = fopen(dfile.c_str(), "wb");
|
|
|
|
// FIXME should this be fatal or not? delete obj? delete d?
|
|
if (!out)
|
|
return;
|
|
|
|
std::string tmp = objfile;
|
|
doEscape(tmp, " ", "\\ ");
|
|
fprintf(out, "%s: \\\n", tmp.c_str());
|
|
|
|
std::vector<std::string>::iterator it = incs.begin();
|
|
for (; it != incs.end(); ++it) {
|
|
tmp = *it;
|
|
doEscape(tmp, "\\", "/");
|
|
doEscape(tmp, " ", "\\ ");
|
|
fprintf(out, "%s \\\n", tmp.c_str());
|
|
}
|
|
|
|
fprintf(out, "\n");
|
|
fclose(out);
|
|
}
|
|
|
|
|
|
bool startsWith(const std::string& str, const std::string& what) {
|
|
return str.compare(0, what.size(), what) == 0;
|
|
}
|
|
|
|
bool contains(const std::string& str, const std::string& what) {
|
|
return str.find(what) != std::string::npos;
|
|
}
|
|
|
|
std::string replace(const std::string& str, const std::string& what,
|
|
const std::string& replacement) {
|
|
size_t pos = str.find(what);
|
|
if (pos == std::string::npos)
|
|
return str;
|
|
std::string replaced = str;
|
|
return replaced.replace(pos, what.size(), replacement);
|
|
}
|
|
|
|
|
|
|
|
static int process( const std::string& srcfilename,
|
|
const std::string& dfile,
|
|
const std::string& objfile,
|
|
const std::string& prefix,
|
|
const std::string& cmd,
|
|
const std::string& dir = "",
|
|
bool quiet = false) {
|
|
|
|
SubprocessSet subprocs;
|
|
Subprocess* subproc = subprocs.Add(cmd, dir);
|
|
|
|
if(!subproc)
|
|
return 2;
|
|
|
|
while ((subproc = subprocs.NextFinished()) == NULL) {
|
|
subprocs.DoWork();
|
|
}
|
|
|
|
bool success = subproc->Finish() == ExitSuccess;
|
|
int exit_code = subproc->ExitCode();
|
|
|
|
std::string output = subproc->GetOutput();
|
|
delete subproc;
|
|
|
|
// process the include directives and output everything else
|
|
std::stringstream ss(output);
|
|
std::string line;
|
|
std::vector<std::string> includes;
|
|
bool isFirstLine = true; // cl prints always first the source filename
|
|
while (std::getline(ss, line)) {
|
|
if (startsWith(line, prefix)) {
|
|
std::string inc = trimLeadingSpace(line.substr(prefix.size()).c_str());
|
|
if (inc[inc.size() - 1] == '\r') // blech, stupid \r\n
|
|
inc = inc.substr(0, inc.size() - 1);
|
|
includes.push_back(inc);
|
|
} else {
|
|
if (!isFirstLine || !startsWith(line, srcfilename)) {
|
|
if (!quiet) {
|
|
fprintf(stdout, "%s\n", line.c_str());
|
|
}
|
|
} else {
|
|
isFirstLine = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!success) {
|
|
return exit_code;
|
|
}
|
|
|
|
// don't update .d until/unless we succeed compilation
|
|
outputDepFile(dfile, objfile, includes);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int main() {
|
|
|
|
// Use the Win32 api instead of argc/argv so we can avoid interpreting the
|
|
// rest of command line after the .d and .obj. Custom parsing seemed
|
|
// preferable to the ugliness you get into in trying to re-escape quotes for
|
|
// subprocesses, so by avoiding argc/argv, the subprocess is called with
|
|
// the same command line verbatim.
|
|
|
|
std::string lang, srcfile, dfile, objfile, prefix, cl, binpath, rest;
|
|
parseCommandLine(GetCommandLine(), lang, srcfile, dfile, objfile,
|
|
prefix, cl, binpath, rest);
|
|
|
|
// needed to suppress filename output of msvc tools
|
|
std::string srcfilename;
|
|
std::string::size_type pos = srcfile.rfind("\\");
|
|
if (pos != std::string::npos) {
|
|
srcfilename = srcfile.substr(pos + 1);
|
|
}
|
|
|
|
std::string nol = " /nologo ";
|
|
std::string show = " /showIncludes ";
|
|
if (lang == "C" || lang == "CXX") {
|
|
return process(srcfilename, dfile, objfile, prefix,
|
|
binpath + nol + show + rest);
|
|
} else if (lang == "RC") {
|
|
// "misuse" cl.exe to get headers from .rc files
|
|
|
|
std::string clrest = rest;
|
|
// rc: /fo x.dir\x.rc.res -> cl: /out:x.dir\x.rc.res.dep.obj
|
|
clrest = replace(clrest, "/fo", "/out:");
|
|
clrest = replace(clrest, objfile, objfile + ".dep.obj ");
|
|
// rc: src\x\x.rc -> cl: /Tc src\x\x.rc
|
|
clrest = replace(clrest, srcfile, "/Tc " + srcfile);
|
|
|
|
cl = "\"" + cl + "\" /P /DRC_INVOKED ";
|
|
|
|
// call cl in object dir so the .i is generated there
|
|
std::string objdir;
|
|
std::string::size_type pos = objfile.rfind("\\");
|
|
if (pos != std::string::npos) {
|
|
objdir = objfile.substr(0, pos);
|
|
}
|
|
|
|
// extract dependencies with cl.exe
|
|
process(srcfilename, dfile, objfile,
|
|
prefix, cl + nol + show + clrest, objdir, true);
|
|
|
|
// compile rc file with rc.exe
|
|
return process(srcfilename, "" , objfile, prefix, binpath + " " + rest);
|
|
}
|
|
|
|
usage("Invalid language specified.");
|
|
return 1;
|
|
}
|