6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-26 12:20:42 +00:00
Code Issues Projects Releases Wiki Activity

Rename Unix/*.cpp and Win32/*.cpp to have a *.inc suffix so that the silly

Browse Source 
gdb debugger doesn't get confused on which file it is reading (the one in
lib/System or the one in lib/System/{Win32,Unix})


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2005-01-09 23:29:00 +00:00
parent 5cdcc58d51
commit bccc8abc79
23 changed files with 15 additions and 3227 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/System/Unix/MappedFile.cpp
-154
View File
@@ -1,154 +0,0 @@
//===- Unix/MappedFile.cpp - Unix MappedFile Implementation -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides the generic Unix implementation of the MappedFile concept.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on *all* UNIX variants.
//===----------------------------------------------------------------------===//
#include "Unix.h"
#include "llvm/System/Process.h"
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
namespace llvm {
using namespace sys;
struct sys::MappedFileInfo {
int fd_;
struct stat sbuf_;
};
void MappedFile::initialize() {
if (path_.exists()) {
info_ = new MappedFileInfo;
int mode = 0;
if (options_&READ_ACCESS)
if (options_&WRITE_ACCESS)
mode = O_RDWR;
else
mode = O_RDONLY;
else if (options_&WRITE_ACCESS)
mode = O_WRONLY;
info_->fd_ = ::open(path_.c_str(),mode);
if (info_->fd_ < 0) {
delete info_;
info_ = 0;
ThrowErrno(std::string("Can't open file: ") + path_.toString());
}
struct stat sbuf;
if(::fstat(info_->fd_, &info_->sbuf_) < 0) {
::close(info_->fd_);
delete info_;
info_ = 0;
ThrowErrno(std::string("Can't stat file: ") + path_.toString());
}
} else {
throw std::string("Can't open file: ") + path_.toString();
}
}
void MappedFile::terminate() {
assert(info_ && "MappedFile not initialized");
if (info_->fd_ >= 0)
::close(info_->fd_);
delete info_;
info_ = 0;
}
void MappedFile::unmap() {
assert(info_ && "MappedFile not initialized");
if (isMapped()) {
if (options_ & WRITE_ACCESS)
::msync(base_, info_->sbuf_.st_size, MS_SYNC);
::munmap(base_, info_->sbuf_.st_size);
}
}
void* MappedFile::map() {
assert(info_ && "MappedFile not initialized");
if (!isMapped()) {
int prot = PROT_NONE;
int flags = 0;
#ifdef MAP_FILE
flags |= MAP_FILE;
#endif
if (options_ == 0) {
prot = PROT_READ;
flags = MAP_PRIVATE;
} else {
if (options_ & READ_ACCESS)
prot |= PROT_READ;
if (options_ & WRITE_ACCESS)
prot |= PROT_WRITE;
if (options_ & EXEC_ACCESS)
prot |= PROT_EXEC;
if (options_ & SHARED_MAPPING)
flags |= MAP_SHARED;
else
flags |= MAP_PRIVATE;
}
size_t map_size = ((info_->sbuf_.st_size / Process::GetPageSize())+1) *
Process::GetPageSize();
base_ = ::mmap(0, map_size, prot, flags, info_->fd_, 0);
if (base_ == MAP_FAILED)
ThrowErrno(std::string("Can't map file:") + path_.toString());
}
return base_;
}
size_t MappedFile::size() const {
assert(info_ && "MappedFile not initialized");
return info_->sbuf_.st_size;
}
void MappedFile::size(size_t new_size) {
assert(info_ && "MappedFile not initialized");
// Take the mapping out of memory
this->unmap();
// Adjust the current size to a page boundary
size_t cur_size = ((info_->sbuf_.st_size / Process::GetPageSize())+1) *
Process::GetPageSize();
// Adjust the new_size to a page boundary
new_size = ((new_size / Process::GetPageSize())+1) *
Process::GetPageSize();
// If the file needs to be extended
if (new_size > cur_size) {
// Ensure we can allocate at least the idodes necessary to handle the
// file size requested.
::lseek(info_->fd_, new_size, SEEK_SET);
::write(info_->fd_, "\0", 1);
}
// Seek to current end of file.
this->map();
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
lib/System/Unix/Memory.cpp
-70
View File
@@ -1,70 +0,0 @@
//===- Unix/Memory.cpp - Generic UNIX System Configuration ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines some functions for various memory management utilities.
//
//===----------------------------------------------------------------------===//
#include "Unix.h"
#include "llvm/System/Process.h"
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
namespace llvm {
/// AllocateRWXMemory - Allocate a slab of memory with read/write/execute
/// permissions. This is typically used for JIT applications where we want
/// to emit code to the memory then jump to it. Getting this type of memory
/// is very OS specific.
///
MemoryBlock Memory::AllocateRWX(unsigned NumBytes) {
if (NumBytes == 0) return MemoryBlock();
long pageSize = Process::GetPageSize();
unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
int fd = -1;
#ifdef NEED_DEV_ZERO_FOR_MMAP
static int zero_fd = open("/dev/zero", O_RDWR);
if (zero_fd == -1) {
ThrowErrno("Can't open /dev/zero device");
}
fd = zero_fd;
#endif
int flags = MAP_PRIVATE |
#ifdef HAVE_MMAP_ANONYMOUS
MAP_ANONYMOUS
#else
MAP_ANON
#endif
;
void *pa = ::mmap(0, pageSize*NumPages, PROT_READ|PROT_WRITE|PROT_EXEC,
flags, fd, 0);
if (pa == MAP_FAILED) {
ThrowErrno("Can't allocate RWX Memory");
}
MemoryBlock result;
result.Address = pa;
result.Size = NumPages*pageSize;
return result;
}
void Memory::ReleaseRWX(MemoryBlock& M) {
if (M.Address == 0 || M.Size == 0) return;
if (0 != ::munmap(M.Address, M.Size)) {
ThrowErrno("Can't release RWX Memory");
}
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
lib/System/Unix/Path.cpp
-752
View File
@@ -1,752 +0,0 @@
//===- llvm/System/Unix/Path.cpp - Unix Path Implementation -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Unix specific portion of the Path class.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on *all* UNIX variants.
//===----------------------------------------------------------------------===//
#include "llvm/Config/alloca.h"
#include "Unix.h"
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#if HAVE_UTIME_H
#include <utime.h>
#endif
#if HAVE_TIME_H
#include <time.h>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
namespace llvm {
using namespace sys;
Path::Path(const std::string& unverified_path) : path(unverified_path) {
if (unverified_path.empty())
return;
if (this->isValid())
return;
// oops, not valid.
path.clear();
ThrowErrno(unverified_path + ": path is not valid");
}
bool
Path::isValid() const {
if (path.empty())
return false;
else if (path.length() >= MAXPATHLEN)
return false;
#if defined(HAVE_REALPATH)
char pathname[MAXPATHLEN];
if (0 == realpath(path.c_str(), pathname))
if (errno != EACCES && errno != EIO && errno != ENOENT && errno != ENOTDIR)
return false;
#endif
return true;
}
Path
Path::GetRootDirectory() {
Path result;
result.setDirectory("/");
return result;
}
Path
Path::GetTemporaryDirectory() {
#if defined(HAVE_MKDTEMP)
// The best way is with mkdtemp but that's not available on many systems,
// Linux and FreeBSD have it. Others probably won't.
char pathname[MAXPATHLEN];
strcpy(pathname,"/tmp/llvm_XXXXXX");
if (0 == mkdtemp(pathname))
ThrowErrno(std::string(pathname) + ": Can't create temporary directory");
Path result;
result.setDirectory(pathname);
assert(result.isValid() && "mkdtemp didn't create a valid pathname!");
return result;
#elif defined(HAVE_MKSTEMP)
// If no mkdtemp is available, mkstemp can be used to create a temporary file
// which is then removed and created as a directory. We prefer this over
// mktemp because of mktemp's inherent security and threading risks. We still
// have a slight race condition from the time the temporary file is created to
// the time it is re-created as a directoy.
char pathname[MAXPATHLEN];
strcpy(pathname, "/tmp/llvm_XXXXXX");
int fd = 0;
if (-1 == (fd = mkstemp(pathname)))
ThrowErrno(std::string(pathname) + ": Can't create temporary directory");
::close(fd);
::unlink(pathname); // start race condition, ignore errors
if (-1 == ::mkdir(pathname, S_IRWXU)) // end race condition
ThrowErrno(std::string(pathname) + ": Can't create temporary directory");
Path result;
result.setDirectory(pathname);
assert(result.isValid() && "mkstemp didn't create a valid pathname!");
return result;
#elif defined(HAVE_MKTEMP)
// If a system doesn't have mkdtemp(3) or mkstemp(3) but it does have
// mktemp(3) then we'll assume that system (e.g. AIX) has a reasonable
// implementation of mktemp(3) and doesn't follow BSD 4.3's lead of replacing
// the XXXXXX with the pid of the process and a letter. That leads to only
// twenty six temporary files that can be generated.
char pathname[MAXPATHLEN];
strcpy(pathname, "/tmp/llvm_XXXXXX");
char *TmpName = ::mktemp(pathname);
if (TmpName == 0)
throw std::string(TmpName) + ": Can't create unique directory name";
if (-1 == ::mkdir(TmpName, S_IRWXU))
ThrowErrno(std::string(TmpName) + ": Can't create temporary directory");
Path result;
result.setDirectory(TmpName);
assert(result.isValid() && "mktemp didn't create a valid pathname!");
return result;
#else
// This is the worst case implementation. tempnam(3) leaks memory unless its
// on an SVID2 (or later) system. On BSD 4.3 it leaks. tmpnam(3) has thread
// issues. The mktemp(3) function doesn't have enough variability in the
// temporary name generated. So, we provide our own implementation that
// increments an integer from a random number seeded by the current time. This
// should be sufficiently unique that we don't have many collisions between
// processes. Generally LLVM processes don't run very long and don't use very
// many temporary files so this shouldn't be a big issue for LLVM.
static time_t num = ::time(0);
char pathname[MAXPATHLEN];
do {
num++;
sprintf(pathname, "/tmp/llvm_%010u", unsigned(num));
} while ( 0 == access(pathname, F_OK ) );
if (-1 == ::mkdir(pathname, S_IRWXU))
ThrowErrno(std::string(pathname) + ": Can't create temporary directory");
Path result;
result.setDirectory(pathname);
assert(result.isValid() && "mkstemp didn't create a valid pathname!");
return result;
#endif
}
static void getPathList(const char*path, std::vector<sys::Path>& Paths) {
const char* at = path;
const char* delim = strchr(at, ':');
Path tmpPath;
while( delim != 0 ) {
std::string tmp(at, size_t(delim-at));
if (tmpPath.setDirectory(tmp))
if (tmpPath.readable())
Paths.push_back(tmpPath);
at = delim + 1;
delim = strchr(at, ':');
}
if (*at != 0)
if (tmpPath.setDirectory(std::string(at)))
if (tmpPath.readable())
Paths.push_back(tmpPath);
}
void
Path::GetSystemLibraryPaths(std::vector<sys::Path>& Paths) {
#ifdef LTDL_SHLIBPATH_VAR
char* env_var = getenv(LTDL_SHLIBPATH_VAR);
if (env_var != 0) {
getPathList(env_var,Paths);
}
#endif
// FIXME: Should this look at LD_LIBRARY_PATH too?
Paths.push_back(sys::Path("/usr/local/lib/"));
Paths.push_back(sys::Path("/usr/X11R6/lib/"));
Paths.push_back(sys::Path("/usr/lib/"));
Paths.push_back(sys::Path("/lib/"));
}
void
Path::GetBytecodeLibraryPaths(std::vector<sys::Path>& Paths) {
char * env_var = getenv("LLVM_LIB_SEARCH_PATH");
if (env_var != 0) {
getPathList(env_var,Paths);
}
#ifdef LLVM_LIBDIR
{
Path tmpPath;
if (tmpPath.setDirectory(LLVM_LIBDIR))
if (tmpPath.readable())
Paths.push_back(tmpPath);
}
#endif
GetSystemLibraryPaths(Paths);
}
Path
Path::GetLLVMDefaultConfigDir() {
return Path("/etc/llvm/");
}
Path
Path::GetUserHomeDirectory() {
const char* home = getenv("HOME");
if (home) {
Path result;
if (result.setDirectory(home))
return result;
}
return GetRootDirectory();
}
bool
Path::isFile() const {
return (isValid() && path[path.length()-1] != '/');
}
bool
Path::isDirectory() const {
return (isValid() && path[path.length()-1] == '/');
}
std::string
Path::getBasename() const {
// Find the last slash
size_t slash = path.rfind('/');
if (slash == std::string::npos)
slash = 0;
else
slash++;
return path.substr(slash, path.rfind('.'));
}
bool Path::hasMagicNumber(const std::string &Magic) const {
size_t len = Magic.size();
assert(len < 1024 && "Request for magic string too long");
char* buf = (char*) alloca(1 + len);
int fd = ::open(path.c_str(),O_RDONLY);
if (fd < 0)
return false;
size_t read_len = ::read(fd, buf, len);
close(fd);
if (len != read_len)
return false;
buf[len] = '\0';
return Magic == buf;
}
bool Path::getMagicNumber(std::string& Magic, unsigned len) const {
if (!isFile())
return false;
assert(len < 1024 && "Request for magic string too long");
char* buf = (char*) alloca(1 + len);
int fd = ::open(path.c_str(),O_RDONLY);
if (fd < 0)
return false;
ssize_t bytes_read = ::read(fd, buf, len);
::close(fd);
if (ssize_t(len) != bytes_read) {
Magic.clear();
return false;
}
Magic.assign(buf,len);
return true;
}
bool
Path::isBytecodeFile() const {
char buffer[ 4];
buffer[0] = 0;
int fd = ::open(path.c_str(),O_RDONLY);
if (fd < 0)
return false;
ssize_t bytes_read = ::read(fd, buffer, 4);
::close(fd);
if (4 != bytes_read)
return false;
return (buffer[0] == 'l' && buffer[1] == 'l' && buffer[2] == 'v' &&
(buffer[3] == 'c' || buffer[3] == 'm'));
}
bool
Path::exists() const {
return 0 == access(path.c_str(), F_OK );
}
bool
Path::readable() const {
return 0 == access(path.c_str(), F_OK | R_OK );
}
bool
Path::writable() const {
return 0 == access(path.c_str(), F_OK | W_OK );
}
bool
Path::executable() const {
return 0 == access(path.c_str(), R_OK | X_OK );
}
std::string
Path::getLast() const {
// Find the last slash
size_t pos = path.rfind('/');
// Handle the corner cases
if (pos == std::string::npos)
return path;
// If the last character is a slash
if (pos == path.length()-1) {
// Find the second to last slash
size_t pos2 = path.rfind('/', pos-1);
if (pos2 == std::string::npos)
return path.substr(0,pos);
else
return path.substr(pos2+1,pos-pos2-1);
}
// Return everything after the last slash
return path.substr(pos+1);
}
void
Path::getStatusInfo(StatusInfo& info) const {
struct stat buf;
if (0 != stat(path.c_str(), &buf)) {
ThrowErrno(std::string("Can't get status: ")+path);
}
info.fileSize = buf.st_size;
info.modTime.fromEpochTime(buf.st_mtime);
info.mode = buf.st_mode;
info.user = buf.st_uid;
info.group = buf.st_gid;
info.isDir = S_ISDIR(buf.st_mode);
if (info.isDir && path[path.length()-1] != '/')
path += '/';
}
static bool AddPermissionBits(const std::string& Filename, int bits) {
// Get the umask value from the operating system. We want to use it
// when changing the file's permissions. Since calling umask() sets
// the umask and returns its old value, we must call it a second
// time to reset it to the user's preference.
int mask = umask(0777); // The arg. to umask is arbitrary.
umask(mask); // Restore the umask.
// Get the file's current mode.
struct stat st;
if ((stat(Filename.c_str(), &st)) == -1)
return false;
// Change the file to have whichever permissions bits from 'bits'
// that the umask would not disable.
if ((chmod(Filename.c_str(), (st.st_mode | (bits & ~mask)))) == -1)
return false;
return true;
}
void Path::makeReadable() {
if (!AddPermissionBits(path,0444))
ThrowErrno(path + ": can't make file readable");
}
void Path::makeWriteable() {
if (!AddPermissionBits(path,0222))
ThrowErrno(path + ": can't make file writable");
}
void Path::makeExecutable() {
if (!AddPermissionBits(path,0111))
ThrowErrno(path + ": can't make file executable");
}
bool
Path::getDirectoryContents(std::set<Path>& result) const {
if (!isDirectory())
return false;
DIR* direntries = ::opendir(path.c_str());
if (direntries == 0)
ThrowErrno(path + ": can't open directory");
result.clear();
struct dirent* de = ::readdir(direntries);
while (de != 0) {
if (de->d_name[0] != '.') {
Path aPath(path + (const char*)de->d_name);
struct stat buf;
if (0 != stat(aPath.path.c_str(), &buf))
ThrowErrno(aPath.path + ": can't get status");
if (S_ISDIR(buf.st_mode))
aPath.path += "/";
result.insert(aPath);
}
de = ::readdir(direntries);
}
closedir(direntries);
return true;
}
bool
Path::setDirectory(const std::string& a_path) {
if (a_path.size() == 0)
return false;
Path save(*this);
path = a_path;
size_t last = a_path.size() -1;
if (a_path[last] != '/')
path += '/';
if (!isValid()) {
path = save.path;
return false;
}
return true;
}
bool
Path::setFile(const std::string& a_path) {
if (a_path.size() == 0)
return false;
Path save(*this);
path = a_path;
size_t last = a_path.size() - 1;
while (last > 0 && a_path[last] == '/')
last--;
path.erase(last+1);
if (!isValid()) {
path = save.path;
return false;
}
return true;
}
bool
Path::appendDirectory(const std::string& dir) {
if (isFile())
return false;
Path save(*this);
path += dir;
path += "/";
if (!isValid()) {
path = save.path;
return false;
}
return true;
}
bool
Path::elideDirectory() {
if (isFile())
return false;
size_t slashpos = path.rfind('/',path.size());
if (slashpos == 0 || slashpos == std::string::npos)
return false;
if (slashpos == path.size() - 1)
slashpos = path.rfind('/',slashpos-1);
if (slashpos == std::string::npos)
return false;
path.erase(slashpos);
return true;
}
bool
Path::appendFile(const std::string& file) {
if (!isDirectory())
return false;
Path save(*this);
path += file;
if (!isValid()) {
path = save.path;
return false;
}
return true;
}
bool
Path::elideFile() {
if (isDirectory())
return false;
size_t slashpos = path.rfind('/',path.size());
if (slashpos == std::string::npos)
return false;
path.erase(slashpos+1);
return true;
}
bool
Path::appendSuffix(const std::string& suffix) {
if (isDirectory())
return false;
Path save(*this);
path.append(".");
path.append(suffix);
if (!isValid()) {
path = save.path;
return false;
}
return true;
}
bool
Path::elideSuffix() {
if (isDirectory()) return false;
size_t dotpos = path.rfind('.',path.size());
size_t slashpos = path.rfind('/',path.size());
if (slashpos != std::string::npos && dotpos != std::string::npos &&
dotpos > slashpos) {
path.erase(dotpos, path.size()-dotpos);
return true;
}
return false;
}
bool
Path::createDirectory( bool create_parents) {
// Make sure we're dealing with a directory
if (!isDirectory()) return false;
// Get a writeable copy of the path name
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
// Null-terminate the last component
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
else
pathname[lastchar+1] = 0;
// If we're supposed to create intermediate directories
if ( create_parents ) {
// Find the end of the initial name component
char * next = strchr(pathname,'/');
if ( pathname[0] == '/')
next = strchr(&pathname[1],'/');
// Loop through the directory components until we're done
while ( next != 0 ) {
*next = 0;
if (0 != access(pathname, F_OK | R_OK | W_OK))
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(std::string(pathname) + ": Can't create directory");
char* save = next;
next = strchr(next+1,'/');
*save = '/';
}
}
if (0 != access(pathname, F_OK | R_OK))
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(std::string(pathname) + ": Can't create directory");
return true;
}
bool
Path::createFile() {
// Make sure we're dealing with a file
if (!isFile()) return false;
// Create the file
int fd = ::creat(path.c_str(), S_IRUSR | S_IWUSR);
if (fd < 0)
ThrowErrno(path + ": Can't create file");
::close(fd);
return true;
}
bool
Path::createTemporaryFile(bool reuse_current) {
// Make sure we're dealing with a file
if (!isFile())
return false;
// Make this into a unique file name
makeUnique( reuse_current );
// create the file
int outFile = ::open(path.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0666);
if (outFile != -1) {
::close(outFile);
return true;
}
return false;
}
bool
Path::destroyDirectory(bool remove_contents) const {
// Make sure we're dealing with a directory
if (!isDirectory()) return false;
// If it doesn't exist, we're done.
if (!exists()) return true;
if (remove_contents) {
// Recursively descend the directory to remove its content
std::string cmd("/bin/rm -rf ");
cmd += path;
system(cmd.c_str());
} else {
// Otherwise, try to just remove the one directory
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
else
pathname[lastchar+1] = 0;
if ( 0 != rmdir(pathname))
ThrowErrno(std::string(pathname) + ": Can't destroy directory");
}
return true;
}
bool
Path::destroyFile() const {
if (!isFile()) return false;
if (0 != unlink(path.c_str()))
ThrowErrno(path + ": Can't destroy file");
return true;
}
bool
Path::renameFile(const Path& newName) {
if (!isFile()) return false;
if (0 != rename(path.c_str(), newName.c_str()))
ThrowErrno(std::string("can't rename ") + path + " as " +
newName.toString());
return true;
}
bool
Path::setStatusInfo(const StatusInfo& si) const {
if (!isFile()) return false;
struct utimbuf utb;
utb.actime = si.modTime.toPosixTime();
utb.modtime = utb.actime;
if (0 != ::utime(path.c_str(),&utb))
ThrowErrno(path + ": can't set file modification time");
if (0 != ::chmod(path.c_str(),si.mode))
ThrowErrno(path + ": can't set mode");
return true;
}
void
sys::CopyFile(const sys::Path &Dest, const sys::Path &Src) {
int inFile = -1;
int outFile = -1;
try {
inFile = ::open(Src.c_str(), O_RDONLY);
if (inFile == -1)
ThrowErrno("Cannnot open source file to copy: " + Src.toString());
outFile = ::open(Dest.c_str(), O_WRONLY|O_CREAT, 0666);
if (outFile == -1)
ThrowErrno("Cannnot create destination file for copy: " +Dest.toString());
char Buffer[16*1024];
while (ssize_t Amt = ::read(inFile, Buffer, 16*1024)) {
if (Amt == -1) {
if (errno != EINTR && errno != EAGAIN)
ThrowErrno("Can't read source file: " + Src.toString());
} else {
char *BufPtr = Buffer;
while (Amt) {
ssize_t AmtWritten = ::write(outFile, BufPtr, Amt);
if (AmtWritten == -1) {
if (errno != EINTR && errno != EAGAIN)
ThrowErrno("Can't write destination file: " + Dest.toString());
} else {
Amt -= AmtWritten;
BufPtr += AmtWritten;
}
}
}
}
::close(inFile);
::close(outFile);
} catch (...) {
if (inFile != -1)
::close(inFile);
if (outFile != -1)
::close(outFile);
throw;
}
}
void
Path::makeUnique(bool reuse_current) {
if (reuse_current && !exists())
return; // File doesn't exist already, just use it!
// Append an XXXXXX pattern to the end of the file for use with mkstemp,
// mktemp or our own implementation.
char *FNBuffer = (char*) alloca(path.size()+8);
path.copy(FNBuffer,path.size());
strcpy(FNBuffer+path.size(), "-XXXXXX");
#if defined(HAVE_MKSTEMP)
int TempFD;
if ((TempFD = mkstemp(FNBuffer)) == -1) {
ThrowErrno("Cannot make unique filename for '" + path + "'");
}
// We don't need to hold the temp file descriptor... we will trust that no one
// will overwrite/delete the file before we can open it again.
close(TempFD);
// Save the name
path = FNBuffer;
#elif defined(HAVE_MKTEMP)
// If we don't have mkstemp, use the old and obsolete mktemp function.
if (mktemp(FNBuffer) == 0) {
ThrowErrno("Cannot make unique filename for '" + path + "'");
}
// Save the name
path = FNBuffer;
#else
// Okay, looks like we have to do it all by our lonesome.
static unsigned FCounter = 0;
unsigned offset = path.size() + 1;
while ( FCounter < 999999 && exists()) {
sprintf(FNBuffer+offset,"%06u",++FCounter);
path = FNBuffer;
}
if (FCounter > 999999)
throw std::string("Cannot make unique filename for '" + path + "'");
#endif
}
}
// vim: sw=2
lib/System/Unix/Process.cpp
-150
View File
@@ -1,150 +0,0 @@
//===- Unix/Process.cpp - Unix Process Implementation --------- -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides the generic Unix implementation of the Process class.
//
//===----------------------------------------------------------------------===//
#include "Unix.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on *all* UNIX variants.
//===----------------------------------------------------------------------===//
namespace llvm {
using namespace sys;
unsigned
Process::GetPageSize()
{
#if defined(HAVE_GETPAGESIZE)
static const int page_size = ::getpagesize();
#elif defined(HAVE_SYSCONF)
static long page_size = ::sysconf(_SC_PAGE_SIZE);
#else
#warning Cannot get the page size on this machine
#endif
return static_cast<unsigned>(page_size);
}
#if defined(HAVE_SBRK)
static char* som = reinterpret_cast<char*>(::sbrk(0));
#endif
size_t
Process::GetMallocUsage()
{
#if defined(HAVE_MALLINFO)
struct mallinfo mi;
mi = ::mallinfo();
return mi.uordblks;
#elif defined(HAVE_SBRK)
// Note this is only an approximation and more closely resembles
// the value returned by mallinfo in the arena field.
char * eom = (char*) sbrk(0);
if (eom != ((char*)-1) && som != ((char*)-1))
return eom - som;
else
return 0;
#else
#warning Cannot get malloc info on this platform
return 0;
#endif
}
size_t
Process::GetTotalMemoryUsage()
{
#if defined(HAVE_MALLINFO)
struct mallinfo mi = ::mallinfo();
return mi.uordblks + mi.hblkhd;
#elif defined(HAVE_GETRUSAGE)
struct rusage usage;
::getrusage(RUSAGE_SELF, &usage);
return usage.ru_maxrss;
#else
#warning Cannot get total memory size on this platform
return 0;
#endif
}
void
Process::GetTimeUsage(TimeValue& elapsed, TimeValue& user_time,
TimeValue& sys_time)
{
elapsed = TimeValue::now();
#if defined(HAVE_GETRUSAGE)
struct rusage usage;
::getrusage(RUSAGE_SELF, &usage);
user_time = TimeValue(
static_cast<TimeValue::SecondsType>( usage.ru_utime.tv_sec ),
static_cast<TimeValue::NanoSecondsType>( usage.ru_utime.tv_usec *
TimeValue::NANOSECONDS_PER_MICROSECOND ) );
sys_time = TimeValue(
static_cast<TimeValue::SecondsType>( usage.ru_stime.tv_sec ),
static_cast<TimeValue::NanoSecondsType>( usage.ru_stime.tv_usec *
TimeValue::NANOSECONDS_PER_MICROSECOND ) );
#else
#warning Cannot get usage times on this platform
user_time.seconds(0);
user_time.microseconds(0);
sys_time.seconds(0);
sys_time.microseconds(0);
#endif
}
// Some LLVM programs such as bugpoint produce core files as a normal part of
// their operation. To prevent the disk from filling up, this function
// does what's necessary to prevent their generation.
void Process::PreventCoreFiles() {
#if HAVE_SETRLIMIT
struct rlimit rlim;
rlim.rlim_cur = rlim.rlim_max = 0;
int res = setrlimit(RLIMIT_CORE, &rlim);
if (res != 0)
ThrowErrno("Can't prevent core file generation");
#endif
}
bool Process::StandardInIsUserInput() {
#if HAVE_ISATTY
return isatty(0);
#endif
// If we don't have isatty, just return false.
return false;
}
bool Process::StandardOutIsDisplayed() {
#if HAVE_ISATTY
return isatty(1);
#endif
// If we don't have isatty, just return false.
return false;
}
bool Process::StandardErrIsDisplayed() {
#if HAVE_ISATTY
return isatty(2);
#endif
// If we don't have isatty, just return false.
return false;
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
lib/System/Unix/Program.cpp
-225
View File
@@ -1,225 +0,0 @@
//===- llvm/System/Unix/Program.cpp -----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Unix specific portion of the Program class.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on *all* UNIX variants.
//===----------------------------------------------------------------------===//
#include <llvm/Config/config.h>
#include "Unix.h"
#include <iostream>
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_SIGNAL_H
#include <signal.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
extern char** environ;
namespace llvm {
using namespace sys;
// This function just uses the PATH environment variable to find the program.
Path
Program::FindProgramByName(const std::string& progName) {
// Check some degenerate cases
if (progName.length() == 0) // no program
return Path();
Path temp;
if (!temp.setFile(progName)) // invalid name
return Path();
if (temp.executable()) // already executable as is
return temp;
// At this point, the file name is valid and its not executable
// Get the path. If its empty, we can't do anything to find it.
const char *PathStr = getenv("PATH");
if (PathStr == 0)
return Path();
// Now we have a colon separated list of directories to search; try them.
unsigned PathLen = strlen(PathStr);
while (PathLen) {
// Find the first colon...
const char *Colon = std::find(PathStr, PathStr+PathLen, ':');
// Check to see if this first directory contains the executable...
Path FilePath;
if (FilePath.setDirectory(std::string(PathStr,Colon))) {
FilePath.appendFile(progName);
if (FilePath.executable())
return FilePath; // Found the executable!
}
// Nope it wasn't in this directory, check the next path in the list!
PathLen -= Colon-PathStr;
PathStr = Colon;
// Advance past duplicate colons
while (*PathStr == ':') {
PathStr++;
PathLen--;
}
}
return Path();
}
static void RedirectFD(const std::string &File, int FD) {
if (File.empty()) return; // Noop
// Open the file
int InFD = open(File.c_str(), FD == 0 ? O_RDONLY : O_WRONLY|O_CREAT, 0666);
if (InFD == -1) {
ThrowErrno("Cannot open file '" + File + "' for "
+ (FD == 0 ? "input" : "output") + "!\n");
}
dup2(InFD, FD); // Install it as the requested FD
close(InFD); // Close the original FD
}
static bool Timeout = false;
static void TimeOutHandler(int Sig) {
Timeout = true;
}
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";
#ifdef HAVE_SYS_WAIT_H
// Create a child process.
int child = fork();
switch (child) {
// An error occured: Return to the caller.
case -1:
ThrowErrno(std::string("Couldn't execute program '") + path.toString() +
"'");
break;
// Child process: Execute the program.
case 0: {
// Redirect file descriptors...
if (redirects) {
if (redirects[0])
if (redirects[0]->isEmpty())
RedirectFD("/dev/null",0);
else
RedirectFD(redirects[0]->toString(), 0);
if (redirects[1])
if (redirects[1]->isEmpty())
RedirectFD("/dev/null",1);
else
RedirectFD(redirects[1]->toString(), 1);
if (redirects[1] && redirects[2] &&
*(redirects[1]) != *(redirects[2])) {
if (redirects[2]->isEmpty())
RedirectFD("/dev/null",2);
else
RedirectFD(redirects[2]->toString(), 2);
} else {
dup2(1, 2);
}
}
// Set up the environment
char** env = environ;
if (envp != 0)
env = (char**) envp;
// Execute!
execve (path.c_str(), (char** const)args, env);
// If the execve() failed, we should exit and let the parent pick up
// our non-zero exit status.
exit (errno);
}
// Parent process: Break out of the switch to do our processing.
default:
break;
}
// Make sure stderr and stdout have been flushed
std::cerr << std::flush;
std::cout << std::flush;
fsync(1);
fsync(2);
struct sigaction Act, Old;
// Install a timeout handler.
if (secondsToWait) {
Timeout = false;
Act.sa_sigaction = 0;
Act.sa_handler = TimeOutHandler;
sigemptyset(&Act.sa_mask);
Act.sa_flags = 0;
sigaction(SIGALRM, &Act, &Old);
alarm(secondsToWait);
}
// Parent process: Wait for the child process to terminate.
int status;
while (wait(&status) != child)
if (secondsToWait && errno == EINTR) {
// Kill the child.
kill(child, SIGKILL);
// Turn off the alarm and restore the signal handler
alarm(0);
sigaction(SIGALRM, &Old, 0);
// Wait for child to die
if (wait(&status) != child)
ThrowErrno("Child timedout but wouldn't die");
return -1; // Timeout detected
} else {
ThrowErrno("Error waiting for child process");
}
// We exited normally without timeout, so turn off the timer.
if (secondsToWait) {
alarm(0);
sigaction(SIGALRM, &Old, 0);
}
// If the program exited normally with a zero exit status, return success!
if (WIFEXITED (status))
return WEXITSTATUS(status);
else if (WIFSIGNALED(status))
throw std::string("Program '") + path.toString() +
"' received terminating signal.";
#else
throw std::string(
"Program::ExecuteAndWait not implemented on this platform!\n");
#endif
return 0;
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
lib/System/Unix/Signals.cpp
-170
View File
@@ -1,170 +0,0 @@
//===- Signals.cpp - Generic Unix Signals Implementation -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines some helpful functions for dealing with the possibility of
// Unix signals occuring while your program is running.
//
//===----------------------------------------------------------------------===//
#include "Unix.h"
#include <vector>
#include <algorithm>
#if HAVE_EXECINFO_H
# include <execinfo.h> // For backtrace().
#endif
#if HAVE_SIGNAL_H
#include <signal.h>
#endif
namespace {
std::vector<std::string> *FilesToRemove = 0 ;
std::vector<llvm::sys::Path> *DirectoriesToRemove = 0;
// IntSigs - Signals that may interrupt the program at any time.
const int IntSigs[] = {
SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGTERM, SIGUSR1, SIGUSR2
};
const int *IntSigsEnd = IntSigs + sizeof(IntSigs)/sizeof(IntSigs[0]);
// KillSigs - Signals that are synchronous with the program that will cause it
// to die.
const int KillSigs[] = {
SIGILL, SIGTRAP, SIGABRT, SIGFPE, SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ
#ifdef SIGEMT
, SIGEMT
#endif
};
const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]);
#ifdef HAVE_BACKTRACE
void* StackTrace[256];
#endif
// PrintStackTrace - In the case of a program crash or fault, print out a stack
// trace so that the user has an indication of why and where we died.
//
// On glibc systems we have the 'backtrace' function, which works nicely, but
// doesn't demangle symbols. In order to backtrace symbols, we fork and exec a
// 'c++filt' process to do the demangling. This seems like the simplest and
// most robust solution when we can't allocate memory (such as in a signal
// handler). If we can't find 'c++filt', we fallback to printing mangled names.
//
void PrintStackTrace() {
#ifdef HAVE_BACKTRACE
// Use backtrace() to output a backtrace on Linux systems with glibc.
int depth = backtrace(StackTrace, sizeof(StackTrace)/sizeof(StackTrace[0]));
// Create a one-way unix pipe. The backtracing process writes to PipeFDs[1],
// the c++filt process reads from PipeFDs[0].
int PipeFDs[2];
if (pipe(PipeFDs)) {
backtrace_symbols_fd(StackTrace, depth, STDERR_FILENO);
return;
}
switch (pid_t ChildPID = fork()) {
case -1: // Error forking, print mangled stack trace
close(PipeFDs[0]);
close(PipeFDs[1]);
backtrace_symbols_fd(StackTrace, depth, STDERR_FILENO);
return;
default: // backtracing process
close(PipeFDs[0]); // Close the reader side.
// Print the mangled backtrace into the pipe.
backtrace_symbols_fd(StackTrace, depth, PipeFDs[1]);
close(PipeFDs[1]); // We are done writing.
while (waitpid(ChildPID, 0, 0) == -1)
if (errno != EINTR) break;
return;
case 0: // c++filt process
close(PipeFDs[1]); // Close the writer side.
dup2(PipeFDs[0], 0); // Read from standard input
close(PipeFDs[0]); // Close the old descriptor
dup2(2, 1); // Revector stdout -> stderr
// Try to run c++filt or gc++filt. If neither is found, call back on 'cat'
// to print the mangled stack trace. If we can't find cat, just exit.
execlp("c++filt", "c++filt", 0);
execlp("gc++filt", "gc++filt", 0);
execlp("cat", "cat", 0);
execlp("/bin/cat", "cat", 0);
exit(0);
}
#endif
}
// SignalHandler - The signal handler that runs...
RETSIGTYPE SignalHandler(int Sig) {
if (FilesToRemove != 0)
while (!FilesToRemove->empty()) {
std::remove(FilesToRemove->back().c_str());
FilesToRemove->pop_back();
}
if (DirectoriesToRemove != 0)
while (!DirectoriesToRemove->empty()) {
DirectoriesToRemove->back().destroyDirectory(true);
DirectoriesToRemove->pop_back();
}
if (std::find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd)
exit(1); // If this is an interrupt signal, exit the program
// Otherwise if it is a fault (like SEGV) output the stacktrace to
// STDERR (if we can) and reissue the signal to die...
PrintStackTrace();
signal(Sig, SIG_DFL);
}
// Just call signal
void RegisterHandler(int Signal) {
signal(Signal, SignalHandler);
}
}
namespace llvm {
// RemoveFileOnSignal - The public API
void sys::RemoveFileOnSignal(const sys::Path &Filename) {
if (FilesToRemove == 0)
FilesToRemove = new std::vector<std::string>;
FilesToRemove->push_back(Filename.toString());
std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
}
// RemoveDirectoryOnSignal - The public API
void sys::RemoveDirectoryOnSignal(const llvm::sys::Path& path) {
if (!path.isDirectory())
return;
if (DirectoriesToRemove == 0)
DirectoriesToRemove = new std::vector<sys::Path>;
DirectoriesToRemove->push_back(path);
std::for_each(IntSigs, IntSigsEnd, RegisterHandler);
std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
}
/// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
/// SIGSEGV) is delivered to the process, print a stack trace and then exit.
void sys::PrintStackTraceOnErrorSignal() {
std::for_each(KillSigs, KillSigsEnd, RegisterHandler);
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
lib/System/Unix/TimeValue.cpp
-47
View File
@@ -1,47 +0,0 @@
//===- Unix/TimeValue.cpp - Unix TimeValue Implementation -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Unix specific portion of the TimeValue class.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only generic UNIX code that
//=== is guaranteed to work on *all* UNIX variants.
//===----------------------------------------------------------------------===//
#include "Unix.h"
namespace llvm {
using namespace sys;
std::string TimeValue::toString() const {
char buffer[32];
time_t ourTime = time_t(this->toEpochTime());
::asctime_r(::localtime(&ourTime), buffer);
std::string result(buffer);
return result.substr(0,24);
}
TimeValue TimeValue::now() {
struct timeval the_time;
timerclear(&the_time);
if (0 != ::gettimeofday(&the_time,0))
ThrowErrno("Couldn't obtain time of day");
return TimeValue(
static_cast<TimeValue::SecondsType>( the_time.tv_sec ),
static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec *
NANOSECONDS_PER_MICROSECOND ) );
}
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab