//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#if 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
#if HAVE_UTIME_H
#include <utime.h>
#endif
# endif
#endif
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
// Put in a hack for Cygwin which falsely reports that the mkdtemp function
// is available when it is not.
#ifdef __CYGWIN__
namespace llvm {
using namespace sys;
+extern const char sys::PathSeparator = ':';
+
+Path::Path(const std::string& p)
+ : path(p) {}
+
+Path::Path(const char *StrStart, unsigned StrLen)
+ : path(StrStart, StrLen) {}
+
bool
Path::isValid() const {
// Check some obvious things
#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.set(tmp))
- if (tmpPath.canRead())
- Paths.push_back(tmpPath);
- at = delim + 1;
- delim = strchr(at, ':');
- }
- if (*at != 0)
- if (tmpPath.set(std::string(at)))
- if (tmpPath.canRead())
- Paths.push_back(tmpPath);
-
-}
-
void
Path::GetSystemLibraryPaths(std::vector<sys::Path>& Paths) {
#ifdef LTDL_SHLIBPATH_VAR
}
void
-Path::GetBytecodeLibraryPaths(std::vector<sys::Path>& Paths) {
+Path::GetBitcodeLibraryPaths(std::vector<sys::Path>& Paths) {
char * env_var = getenv("LLVM_LIB_SEARCH_PATH");
if (env_var != 0) {
getPathList(env_var,Paths);
return GetRootDirectory();
}
+Path
+Path::GetCurrentDirectory() {
+ char pathname[MAXPATHLEN];
+ if (!getcwd(pathname,MAXPATHLEN)) {
+ assert (false && "Could not query current working directory.");
+ return Path("");
+ }
+
+ return Path(pathname);
+}
+
+/// GetMainExecutable - Return the path to the main executable, given the
+/// value of argv[0] from program startup.
+Path Path::GetMainExecutable(const char *argv0, void *MainAddr) {
+#if defined(__CYGWIN__)
+ char exe_link[64];
+ snprintf(exe_link, sizeof(exe_link), "/proc/%d/exe", getpid());
+ char exe_path[MAXPATHLEN];
+ ssize_t len = readlink(exe_link, exe_path, sizeof(exe_path));
+ if (len > 0 && len < MAXPATHLEN - 1) {
+ exe_path[len] = '\0';
+ return Path(std::string(exe_path));
+ }
+#elif defined(HAVE_DLFCN_H)
+ // Use dladdr to get executable path if available.
+ Dl_info DLInfo;
+ int err = dladdr(MainAddr, &DLInfo);
+ if (err != 0)
+ return Path(std::string(DLInfo.dli_fname));
+#endif
+ return Path();
+}
+
+
+std::string Path::getDirname() const {
+ return getDirnameCharSep(path, '/');
+}
std::string
Path::getBasename() const {
// Find the last slash
- size_t slash = path.rfind('/');
+ std::string::size_type slash = path.rfind('/');
if (slash == std::string::npos)
slash = 0;
else
slash++;
- size_t dot = path.rfind('.');
+ std::string::size_type dot = path.rfind('.');
if (dot == std::string::npos || dot < slash)
return path.substr(slash);
else
return path.substr(slash, dot - slash);
}
+std::string
+Path::getSuffix() const {
+ // Find the last slash
+ std::string::size_type slash = path.rfind('/');
+ if (slash == std::string::npos)
+ slash = 0;
+ else
+ slash++;
+
+ std::string::size_type dot = path.rfind('.');
+ if (dot == std::string::npos || dot < slash)
+ return std::string();
+ else
+ return path.substr(dot + 1);
+}
+
bool Path::getMagicNumber(std::string& Magic, unsigned len) const {
assert(len < 1024 && "Request for magic string too long");
char* buf = (char*) alloca(1 + len);
return 0 == access(path.c_str(), F_OK );
}
+bool
+Path::isDirectory() const {
+ struct stat buf;
+ if (0 != stat(path.c_str(), &buf))
+ return false;
+ return buf.st_mode & S_IFDIR ? true : false;
+}
+
bool
Path::canRead() const {
return 0 == access(path.c_str(), F_OK | R_OK );
return false;
}
+static bool createDirectoryHelper(char* beg, char* end, bool create_parents) {
+
+ if (access(beg, F_OK | R_OK | W_OK) == 0)
+ return false;
+
+ if (create_parents) {
+
+ char* c = end;
+
+ for (; c != beg; --c)
+ if (*c == '/') {
+
+ // Recurse to handling the parent directory.
+ *c = '\0';
+ bool x = createDirectoryHelper(beg, c, create_parents);
+ *c = '/';
+
+ // Return if we encountered an error.
+ if (x)
+ return true;
+
+ break;
+ }
+ }
+
+ return mkdir(beg, S_IRWXU | S_IRWXG) != 0;
+}
+
bool
Path::createDirectoryOnDisk( bool create_parents, std::string* ErrMsg ) {
// Get a writeable copy of the path name
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)) {
- return MakeErrMsg(ErrMsg,
- 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)) {
- return MakeErrMsg(ErrMsg,
- std::string(pathname) + ": can't create directory");
- }
+ size_t lastchar = path.length() - 1 ;
+
+ if (pathname[lastchar] != '/')
+ ++lastchar;
+
+ pathname[lastchar] = 0;
+
+ if (createDirectoryHelper(pathname, pathname+lastchar, create_parents))
+ return MakeErrMsg(ErrMsg,
+ std::string(pathname) + ": can't create directory");
+
return false;
}
// Otherwise, try to just remove the one directory.
char pathname[MAXPATHLEN];
path.copy(pathname, MAXPATHLEN);
- int lastchar = path.length() - 1 ;
+ size_t lastchar = path.length() - 1;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
else
return false;
}
+const char *Path::MapInFilePages(int FD, uint64_t FileSize) {
+ int Flags = MAP_PRIVATE;
+#ifdef MAP_FILE
+ Flags |= MAP_FILE;
+#endif
+ void *BasePtr = ::mmap(0, FileSize, PROT_READ, Flags, FD, 0);
+ if (BasePtr == MAP_FAILED)
+ return 0;
+ return (const char*)BasePtr;
+}
+
+void Path::UnMapFilePages(const char *BasePtr, uint64_t FileSize) {
+ ::munmap((void*)BasePtr, FileSize);
+}
+
} // end llvm namespace
projects / oota-llvm.git / blobdiff