//===- Win32/Program.cpp - Win32 Program Implementation ------- -*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Jeff Cohen and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
// This file provides the Win32 specific implementation of the Program class.
//===----------------------------------------------------------------------===//
#include "Win32.h"
+#include <cstdio>
#include <malloc.h>
#include <io.h>
+#include <fcntl.h>
//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only Win32 specific code
+//=== WARNING: Implementation here must contain only Win32 specific code
//=== and must not be UNIX code
//===----------------------------------------------------------------------===//
+#ifdef __MINGW32__
+// Ancient mingw32's w32api might not have this declaration.
+extern "C"
+BOOL WINAPI SetInformationJobObject(HANDLE hJob,
+ JOBOBJECTINFOCLASS JobObjectInfoClass,
+ LPVOID lpJobObjectInfo,
+ DWORD cbJobObjectInfoLength);
+#endif
+
+namespace {
+ struct Win32ProcessInfo {
+ HANDLE hProcess;
+ DWORD dwProcessId;
+ };
+}
+
namespace llvm {
using namespace sys;
+Program::Program() : Data_(0) {}
+
+Program::~Program() {
+ if (Data_) {
+ Win32ProcessInfo* wpi = reinterpret_cast<Win32ProcessInfo*>(Data_);
+ CloseHandle(wpi->hProcess);
+ delete wpi;
+ Data_ = 0;
+ }
+}
+
+unsigned Program::GetPid() const {
+ Win32ProcessInfo* wpi = reinterpret_cast<Win32ProcessInfo*>(Data_);
+ return wpi->dwProcessId;
+}
+
// This function just uses the PATH environment variable to find the program.
Path
Program::FindProgramByName(const std::string& progName) {
if (progName.length() == 0) // no program
return Path();
Path temp;
- if (!temp.setFile(progName)) // invalid name
+ if (!temp.set(progName)) // invalid name
return Path();
- if (temp.executable()) // already executable as is
+ // Return paths with slashes verbatim.
+ if (progName.find('\\') != std::string::npos ||
+ progName.find('/') != std::string::npos)
return temp;
- // At this point, the file name is valid and its not executable.
+ // At this point, the file name is valid and does not contain slashes.
// Let Windows search for it.
char buffer[MAX_PATH];
char *dummy = NULL;
}
}
-static HANDLE RedirectIO(const Path *path, int fd) {
+static HANDLE RedirectIO(const Path *path, int fd, std::string* ErrMsg) {
HANDLE h;
if (path == 0) {
DuplicateHandle(GetCurrentProcess(), (HANDLE)_get_osfhandle(fd),
return h;
}
- const char *fname = path->toString().c_str();
- if (*fname == 0)
+ const char *fname;
+ if (path->isEmpty())
fname = "NUL";
+ else
+ fname = path->c_str();
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(sa);
&sa, fd == 0 ? OPEN_EXISTING : CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE) {
- ThrowError(std::string(fname) + ": Can't open file for " +
+ MakeErrMsg(ErrMsg, std::string(fname) + ": Can't open file for " +
(fd ? "input: " : "output: "));
}
+
return h;
}
-int
-Program::ExecuteAndWait(const Path& path,
- const char** args,
- const char** envp,
- const Path** redirects,
- unsigned secondsToWait) {
- if (!path.executable())
- throw path.toString() + " is not executable";
+/// ArgNeedsQuotes - Check whether argument needs to be quoted when calling
+/// CreateProcess.
+static bool ArgNeedsQuotes(const char *Str) {
+ return Str[0] == '\0' || strchr(Str, ' ') != 0;
+}
+
+
+/// ArgLenWithQuotes - Check whether argument needs to be quoted when calling
+/// CreateProcess and returns length of quoted arg with escaped quotes
+static unsigned int ArgLenWithQuotes(const char *Str) {
+ unsigned int len = ArgNeedsQuotes(Str) ? 2 : 0;
+
+ while (*Str != '\0') {
+ if (*Str == '\"')
+ ++len;
+
+ ++len;
+ ++Str;
+ }
+
+ return len;
+}
+
+
+bool
+Program::Execute(const Path& path,
+ const char** args,
+ const char** envp,
+ const Path** redirects,
+ unsigned memoryLimit,
+ std::string* ErrMsg) {
+ if (Data_) {
+ Win32ProcessInfo* wpi = reinterpret_cast<Win32ProcessInfo*>(Data_);
+ CloseHandle(wpi->hProcess);
+ delete wpi;
+ Data_ = 0;
+ }
+
+ if (!path.canExecute()) {
+ if (ErrMsg)
+ *ErrMsg = "program not executable";
+ return false;
+ }
// Windows wants a command line, not an array of args, to pass to the new
// process. We have to concatenate them all, while quoting the args that
- // have embedded spaces.
+ // have embedded spaces (or are empty).
// First, determine the length of the command line.
unsigned len = 0;
for (unsigned i = 0; args[i]; i++) {
- len += strlen(args[i]) + 1;
- if (strchr(args[i], ' '))
- len += 2;
+ len += ArgLenWithQuotes(args[i]) + 1;
}
// Now build the command line.
- char *command = reinterpret_cast<char *>(_alloca(len));
+ char *command = reinterpret_cast<char *>(_alloca(len+1));
char *p = command;
for (unsigned i = 0; args[i]; i++) {
const char *arg = args[i];
- size_t len = strlen(arg);
- bool needsQuoting = strchr(arg, ' ') != 0;
+
+ bool needsQuoting = ArgNeedsQuotes(arg);
if (needsQuoting)
*p++ = '"';
- memcpy(p, arg, len);
- p += len;
+
+ while (*arg != '\0') {
+ if (*arg == '\"')
+ *p++ = '\\';
+
+ *p++ = *arg++;
+ }
+
if (needsQuoting)
*p++ = '"';
*p++ = ' ';
*p = 0;
+ // The pointer to the environment block for the new process.
+ char *envblock = 0;
+
+ if (envp) {
+ // An environment block consists of a null-terminated block of
+ // null-terminated strings. Convert the array of environment variables to
+ // an environment block by concatenating them.
+
+ // First, determine the length of the environment block.
+ len = 0;
+ for (unsigned i = 0; envp[i]; i++)
+ len += strlen(envp[i]) + 1;
+
+ // Now build the environment block.
+ envblock = reinterpret_cast<char *>(_alloca(len+1));
+ p = envblock;
+
+ for (unsigned i = 0; envp[i]; i++) {
+ const char *ev = envp[i];
+ size_t len = strlen(ev) + 1;
+ memcpy(p, ev, len);
+ p += len;
+ }
+
+ *p = 0;
+ }
+
// Create a child process.
STARTUPINFO si;
memset(&si, 0, sizeof(si));
if (redirects) {
si.dwFlags = STARTF_USESTDHANDLES;
-
- try {
- si.hStdInput = RedirectIO(redirects[0], 0);
- si.hStdOutput = RedirectIO(redirects[1], 1);
- if (redirects[1] && redirects[2] && *(redirects[1]) != *(redirects[2])) {
- si.hStdError = RedirectIO(redirects[2], 2);
- } else {
- DuplicateHandle(GetCurrentProcess(), si.hStdOutput,
- GetCurrentProcess(), &si.hStdError,
- 0, TRUE, DUPLICATE_SAME_ACCESS);
- }
- } catch (...) {
+
+ si.hStdInput = RedirectIO(redirects[0], 0, ErrMsg);
+ if (si.hStdInput == INVALID_HANDLE_VALUE) {
+ MakeErrMsg(ErrMsg, "can't redirect stdin");
+ return false;
+ }
+ si.hStdOutput = RedirectIO(redirects[1], 1, ErrMsg);
+ if (si.hStdOutput == INVALID_HANDLE_VALUE) {
CloseHandle(si.hStdInput);
- CloseHandle(si.hStdOutput);
- CloseHandle(si.hStdError);
- throw;
+ MakeErrMsg(ErrMsg, "can't redirect stdout");
+ return false;
+ }
+ if (redirects[1] && redirects[2] && *(redirects[1]) == *(redirects[2])) {
+ // If stdout and stderr should go to the same place, redirect stderr
+ // to the handle already open for stdout.
+ DuplicateHandle(GetCurrentProcess(), si.hStdOutput,
+ GetCurrentProcess(), &si.hStdError,
+ 0, TRUE, DUPLICATE_SAME_ACCESS);
+ } else {
+ // Just redirect stderr
+ si.hStdError = RedirectIO(redirects[2], 2, ErrMsg);
+ if (si.hStdError == INVALID_HANDLE_VALUE) {
+ CloseHandle(si.hStdInput);
+ CloseHandle(si.hStdOutput);
+ MakeErrMsg(ErrMsg, "can't redirect stderr");
+ return false;
+ }
}
}
fflush(stdout);
fflush(stderr);
- BOOL rc = CreateProcess(path.c_str(), command, NULL, NULL, FALSE, 0,
- envp, NULL, &si, &pi);
+ BOOL rc = CreateProcess(path.c_str(), command, NULL, NULL, TRUE, 0,
+ envblock, NULL, &si, &pi);
DWORD err = GetLastError();
// Regardless of whether the process got created or not, we are done with
CloseHandle(si.hStdOutput);
CloseHandle(si.hStdError);
- // Now throw an error if the process didn't get created.
- if (!rc)
- {
+ // Now return an error if the process didn't get created.
+ if (!rc) {
SetLastError(err);
- ThrowError(std::string("Couldn't execute program '") +
- path.toString() + "'");
+ MakeErrMsg(ErrMsg, std::string("Couldn't execute program '") +
+ path.str() + "'");
+ return false;
+ }
+ Win32ProcessInfo* wpi = new Win32ProcessInfo;
+ wpi->hProcess = pi.hProcess;
+ wpi->dwProcessId = pi.dwProcessId;
+ Data_ = wpi;
+
+ // Make sure these get closed no matter what.
+ AutoHandle hThread(pi.hThread);
+
+ // Assign the process to a job if a memory limit is defined.
+ AutoHandle hJob(0);
+ if (memoryLimit != 0) {
+ hJob = CreateJobObject(0, 0);
+ bool success = false;
+ if (hJob != 0) {
+ JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli;
+ memset(&jeli, 0, sizeof(jeli));
+ jeli.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_PROCESS_MEMORY;
+ jeli.ProcessMemoryLimit = uintptr_t(memoryLimit) * 1048576;
+ if (SetInformationJobObject(hJob, JobObjectExtendedLimitInformation,
+ &jeli, sizeof(jeli))) {
+ if (AssignProcessToJobObject(hJob, pi.hProcess))
+ success = true;
+ }
+ }
+ if (!success) {
+ SetLastError(GetLastError());
+ MakeErrMsg(ErrMsg, std::string("Unable to set memory limit"));
+ TerminateProcess(pi.hProcess, 1);
+ WaitForSingleObject(pi.hProcess, INFINITE);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+int
+Program::Wait(const Path &path,
+ unsigned secondsToWait,
+ std::string* ErrMsg) {
+ if (Data_ == 0) {
+ MakeErrMsg(ErrMsg, "Process not started!");
+ return -1;
}
- // Wait for it to terminate.
+ Win32ProcessInfo* wpi = reinterpret_cast<Win32ProcessInfo*>(Data_);
+ HANDLE hProcess = wpi->hProcess;
+
+ // Wait for the process to terminate.
DWORD millisecondsToWait = INFINITE;
if (secondsToWait > 0)
millisecondsToWait = secondsToWait * 1000;
- if (WaitForSingleObject(pi.hProcess, millisecondsToWait) == WAIT_TIMEOUT) {
- if (!TerminateProcess(pi.hProcess, 1)) {
- ThrowError(std::string("Failed to terminate timed-out program '") +
- path.toString() + "'");
+ if (WaitForSingleObject(hProcess, millisecondsToWait) == WAIT_TIMEOUT) {
+ if (!TerminateProcess(hProcess, 1)) {
+ MakeErrMsg(ErrMsg, "Failed to terminate timed-out program.");
+ return -1;
}
- WaitForSingleObject(pi.hProcess, INFINITE);
+ WaitForSingleObject(hProcess, INFINITE);
}
-
+
// Get its exit status.
DWORD status;
- rc = GetExitCodeProcess(pi.hProcess, &status);
- err = GetLastError();
-
- // Done with the handles; go close them.
- CloseHandle(pi.hProcess);
- CloseHandle(pi.hThread);
+ BOOL rc = GetExitCodeProcess(hProcess, &status);
+ DWORD err = GetLastError();
if (!rc) {
SetLastError(err);
- ThrowError(std::string("Failed getting status for program '") +
- path.toString() + "'");
+ MakeErrMsg(ErrMsg, "Failed getting status for program.");
+ return -1;
}
return status;
}
+bool
+Program::Kill(std::string* ErrMsg) {
+ if (Data_ == 0) {
+ MakeErrMsg(ErrMsg, "Process not started!");
+ return true;
+ }
+
+ Win32ProcessInfo* wpi = reinterpret_cast<Win32ProcessInfo*>(Data_);
+ HANDLE hProcess = wpi->hProcess;
+ if (TerminateProcess(hProcess, 1) == 0) {
+ MakeErrMsg(ErrMsg, "The process couldn't be killed!");
+ return true;
+ }
+
+ return false;
+}
+
+bool Program::ChangeStdinToBinary(){
+ int result = _setmode( _fileno(stdin), _O_BINARY );
+ return result == -1;
+}
+
+bool Program::ChangeStdoutToBinary(){
+ int result = _setmode( _fileno(stdout), _O_BINARY );
+ return result == -1;
+}
+
+bool Program::ChangeStderrToBinary(){
+ int result = _setmode( _fileno(stderr), _O_BINARY );
+ return result == -1;
+}
+
}
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
projects / oota-llvm.git / blobdiff