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Add-so-information #9

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71 changes: 52 additions & 19 deletions itanium/include/fbbe/stacktrace.h
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@
// <http://www.gnu.org/licenses/>.

#pragma once

#ifndef _FBBE_GNU_STACKTRACE
#define _FBBE_GNU_STACKTRACE 1

Expand Down Expand Up @@ -60,13 +61,26 @@ using stacktrace = std::pmr::stacktrace;

#pragma GCC system_header

#include <charconv>
#include <cstring>
#include <cunistd>
#include <dlfcn.h>
#include <limits>
#include <link.h>
#include <linux/limits.h>
#include <memory>
#include <new>
#include <sstream>
#include <string>
#include <utility>

#if __ELF_NATIVE_CLASS == 32
#define WORD_WIDTH 8
#else
/* We assume 64bits. */
#define WORD_WIDTH 16
#endif

#if __has_include(<compare>)
#include <compare>
#endif
Expand Down Expand Up @@ -96,25 +110,24 @@ int backtrace_syminfo(backtrace_state *, __UINTPTR_TYPE__ addr,
#endif

#if defined(_LIBCPP_VERSION) && __has_include(<__assert>)
# include <__assert>
# define _FBBE_ASSERT(pred) _LIBCPP_ASSERT(pred, "")
#include <__assert>
#define _FBBE_ASSERT(pred) _LIBCPP_ASSERT(pred, "")
#elif defined(__GLIBCXX__)
# define _FBBE_ASSERT(pred) __glibcxx_assert(pred)
#define _FBBE_ASSERT(pred) __glibcxx_assert(pred)
#else
# include <cassert>
# define _FBBE_ASSERT(pred) (assert((pred)))
#include <cassert>
#define _FBBE_ASSERT(pred) (assert((pred)))
#endif

#if defined(__GLIBCXX__) || ((defined(__MINGW32__) || defined(__CYGWIN__)) && !defined(__clang__))
#define _FBBE_TRY __try
#define _FBBE_CATCH(x) __catch(x)
#if defined(__GLIBCXX__) || \
((defined(__MINGW32__) || defined(__CYGWIN__)) && !defined(__clang__))
#define _FBBE_TRY __try
#define _FBBE_CATCH(x) __catch(x)
#else
#define _FBBE_TRY try
#define _FBBE_CATCH(x) catch(x)
#define _FBBE_TRY try
#define _FBBE_CATCH(x) catch (x)
#endif



namespace __cxxabiv1 {
extern "C" char *__cxa_demangle(const char *__mangled_name,
char *__output_buffer, size_t *__length,
Expand Down Expand Up @@ -224,13 +237,34 @@ class stacktrace_entry {
static void _S_err_handler(void *, const char *, int) {}

static backtrace_state *_S_init() {
static backtrace_state *__state =
backtrace_create_state(nullptr, 1, _S_err_handler, nullptr);
static backtrace_state *__state = []() {
auto getpath = []() -> std::string {
char buf[PATH_MAX + 1];
if (readlink("/proc/self/exe", buf, sizeof(buf) - 1) == -1) {
return "";
}
std::string str(buf);
return str.substr(0, str.rfind('/'));
};

auto exec_filename = getpath();
return backtrace_create_state(exec_filename.c_str(), 1, _S_err_handler,
nullptr);
}();
return __state;
}

friend std::ostream &operator<<(std::ostream &, const stacktrace_entry &);

std::string _symbol(uintptr_t const pc) const {
Dl_info info;
int status;
link_map *map;
status = dladdr1((void const *)(pc), &info, reinterpret_cast<void **>(&map),
RTLD_DL_LINKMAP);
return std::string(info.dli_fname ?: "");
}

bool _M_get_info(std::string *__desc, std::string *__file,
int *__line) const {
if (!*this)
Expand Down Expand Up @@ -687,9 +721,7 @@ template <typename _Allocator> class basic_stacktrace {
return nullptr;
_M_frames = static_cast<pointer>(__p);
} else {
_FBBE_TRY {
_M_frames = __alloc.allocate(__n);
}
_FBBE_TRY { _M_frames = __alloc.allocate(__n); }
_FBBE_CATCH(const std::bad_alloc &) { return nullptr; }
}
_M_capacity = __n;
Expand All @@ -706,7 +738,7 @@ template <typename _Allocator> class basic_stacktrace {
_FBBE_GNU_OPERATOR_DELETE(static_cast<void *>(_M_frames),
_M_capacity * sizeof(value_type));
#else
_FBBE_GNU_OPERATOR_DELETE(static_cast<void *>(_M_frames));
_FBBE_GNU_OPERATOR_DELETE(static_cast<void *>(_M_frames));
#endif
else
__alloc.deallocate(_M_frames, _M_capacity);
Expand Down Expand Up @@ -803,7 +835,8 @@ inline std::ostream &operator<<(std::ostream &__os,
int __line;
if (__f._M_get_info(&__desc, &__file, &__line)) {
__os.width(4);
__os << __desc << " at " << __file << ':' << __line;
__os << __f._symbol(__f._M_pc) << "(" << __desc << ") at " << __file << ':'
<< __line;
}
return __os;
}
Expand Down