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Remove sys::GetMainExecutable.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184916 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-06-26 05:05:37 +00:00
parent 50188c1f42
commit bdfe4399db
3 changed files with 0 additions and 121 deletions
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5
include/llvm/Support/PathV1.h
View File

@ -104,11 +104,6 @@ namespace sys {
/// @brief Returns the current working directory.
static Path GetCurrentDirectory();
/// GetMainExecutable - Return the path to the main executable, given the
/// value of argv[0] from program startup and the address of main itself.
/// In extremis, this function may fail and return an empty path.
static Path GetMainExecutable(const char *argv0, void *MainAddr);
/// This is one of the very few ways in which a path can be constructed
/// with a syntactically invalid name. The only *legal* invalid name is an
/// empty one. Other invalid names are not permitted. Empty paths are

107
lib/Support/Unix/Path.inc
View File

@ -190,113 +190,6 @@ Path::GetCurrentDirectory() {
return Path(pathname);
}
#if defined(__FreeBSD__) || defined (__NetBSD__) || defined(__Bitrig__) || \
defined(__OpenBSD__) || defined(__minix) || defined(__FreeBSD_kernel__) || \
defined(__linux__) || defined(__CYGWIN__)
static int
test_dir(char buf[PATH_MAX], char ret[PATH_MAX],
const char *dir, const char *bin)
{
struct stat sb;
snprintf(buf, PATH_MAX, "%s/%s", dir, bin);
if (realpath(buf, ret) == NULL)
return (1);
if (stat(buf, &sb) != 0)
return (1);
return (0);
}
static char *
getprogpath(char ret[PATH_MAX], const char *bin)
{
char *pv, *s, *t, buf[PATH_MAX];
/* First approach: absolute path. */
if (bin[0] == '/') {
if (test_dir(buf, ret, "/", bin) == 0)
return (ret);
return (NULL);
}
/* Second approach: relative path. */
if (strchr(bin, '/') != NULL) {
if (getcwd(buf, PATH_MAX) == NULL)
return (NULL);
if (test_dir(buf, ret, buf, bin) == 0)
return (ret);
return (NULL);
}
/* Third approach: $PATH */
if ((pv = getenv("PATH")) == NULL)
return (NULL);
s = pv = strdup(pv);
if (pv == NULL)
return (NULL);
while ((t = strsep(&s, ":")) != NULL) {
if (test_dir(buf, ret, t, bin) == 0) {
free(pv);
return (ret);
}
}
free(pv);
return (NULL);
}
#endif // __FreeBSD__ || __NetBSD__ || __FreeBSD_kernel__
/// 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(__APPLE__)
// On OS X the executable path is saved to the stack by dyld. Reading it
// from there is much faster than calling dladdr, especially for large
// binaries with symbols.
char exe_path[MAXPATHLEN];
uint32_t size = sizeof(exe_path);
if (_NSGetExecutablePath(exe_path, &size) == 0) {
char link_path[MAXPATHLEN];
if (realpath(exe_path, link_path))
return Path(link_path);
}
#elif defined(__FreeBSD__) || defined (__NetBSD__) || defined(__Bitrig__) || \
defined(__OpenBSD__) || defined(__minix) || defined(__FreeBSD_kernel__)
char exe_path[PATH_MAX];
if (getprogpath(exe_path, argv0) != NULL)
return Path(exe_path);
#elif defined(__linux__) || defined(__CYGWIN__)
char exe_path[MAXPATHLEN];
StringRef aPath("/proc/self/exe");
if (sys::fs::exists(aPath)) {
// /proc is not always mounted under Linux (chroot for example).
ssize_t len = readlink(aPath.str().c_str(), exe_path, sizeof(exe_path));
if (len >= 0)
return Path(StringRef(exe_path, len));
} else {
// Fall back to the classical detection.
if (getprogpath(exe_path, argv0) != NULL)
return Path(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();
// If the filename is a symlink, we need to resolve and return the location of
// the actual executable.
char link_path[MAXPATHLEN];
if (realpath(DLInfo.dli_fname, link_path))
return Path(link_path);
#else
#error GetMainExecutable is not implemented on this host yet.
#endif
return Path();
}
bool
Path::exists() const {
return 0 == access(path.c_str(), F_OK );

9
lib/Support/Windows/Path.inc
View File

@ -200,15 +200,6 @@ Path::GetCurrentDirectory() {
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) {
char pathname[MAX_PATH];
DWORD ret = ::GetModuleFileNameA(NULL, pathname, MAX_PATH);
return ret != MAX_PATH ? Path(pathname) : Path();
}
// FIXME: the above set of functions don't map to Windows very well.
bool