diff options
Diffstat (limited to 'CRT.c')
-rw-r--r-- | CRT.c | 79 |
1 files changed, 69 insertions, 10 deletions
@@ -1,7 +1,7 @@ /* htop - CRT.c (C) 2004-2011 Hisham H. Muhammad -Released under the GNU GPLv2, see the COPYING file +Released under the GNU GPLv2+, see the COPYING file in the source distribution for its full text. */ @@ -21,14 +21,22 @@ in the source distribution for its full text. #include "ProvideCurses.h" #include "XUtils.h" -#ifdef HAVE_EXECINFO_H -#include <execinfo.h> -#endif - #if !defined(NDEBUG) && defined(HAVE_MEMFD_CREATE) #include <sys/mman.h> #endif +#if defined(HAVE_LIBUNWIND_H) && defined(HAVE_LIBUNWIND) +# define PRINT_BACKTRACE +# define UNW_LOCAL_ONLY +# include <libunwind.h> +# if defined(HAVE_DLADDR) +# include <dlfcn.h> +# endif +#elif defined(HAVE_EXECINFO_H) +# define PRINT_BACKTRACE +# include <execinfo.h> +#endif + #define ColorIndex(i,j) ((7-(i))*8+(j)) @@ -1008,6 +1016,59 @@ void CRT_setColors(int colorScheme) { CRT_colors = CRT_colorSchemes[colorScheme]; } +#ifdef PRINT_BACKTRACE +static void print_backtrace(void) { +#if defined(HAVE_LIBUNWIND_H) && defined(HAVE_LIBUNWIND) + unw_context_t context; + unw_getcontext(&context); + + unw_cursor_t cursor; + unw_init_local(&cursor, &context); + + unsigned int item = 0; + + while (unw_step(&cursor) > 0) { + unw_word_t pc; + unw_get_reg(&cursor, UNW_REG_IP, &pc); + if (pc == 0) + break; + + char symbolName[256] = "?"; + unw_word_t offset = 0; + unw_get_proc_name(&cursor, symbolName, sizeof(symbolName), &offset); + + unw_proc_info_t pip; + pip.unwind_info = NULL; + + const char* fname = "?"; + const void* ptr = 0; + if (unw_get_proc_info(&cursor, &pip) == 0) { + ptr = (const void*)(pip.start_ip + offset); + + #ifdef HAVE_DLADDR + Dl_info dlinfo; + if (dladdr(ptr, &dlinfo) && dlinfo.dli_fname && *dlinfo.dli_fname) + fname = dlinfo.dli_fname; + #endif + } + + const char* frame = ""; + if (unw_is_signal_frame(&cursor) > 0) + frame = "{signal frame}"; + + fprintf(stderr, "%2u: %#14lx %s (%s+%#lx) [%p]%s%s\n", item++, pc, fname, symbolName, offset, ptr, frame ? " " : "", frame); + } +#elif defined(HAVE_EXECINFO_H) + void* backtraceArray[256]; + + size_t size = backtrace(backtraceArray, ARRAYSIZE(backtraceArray)); + backtrace_symbols_fd(backtraceArray, size, STDERR_FILENO); +#else +#error No implementation for print_backtrace()! +#endif +} +#endif + void CRT_handleSIGSEGV(int signal) { CRT_done(); @@ -1022,7 +1083,7 @@ void CRT_handleSIGSEGV(int signal) { " - Likely steps to reproduce (How did it happen?)\n" ); -#ifdef HAVE_EXECINFO_H +#ifdef PRINT_BACKTRACE fprintf(stderr, " - Backtrace of the issue (see below)\n"); #endif @@ -1048,16 +1109,14 @@ void CRT_handleSIGSEGV(int signal) { Settings_write(CRT_crashSettings, true); fprintf(stderr, "\n\n"); -#ifdef HAVE_EXECINFO_H +#ifdef PRINT_BACKTRACE fprintf(stderr, "Backtrace information:\n" "----------------------\n" ); - void* backtraceArray[256]; + print_backtrace(); - size_t size = backtrace(backtraceArray, ARRAYSIZE(backtraceArray)); - backtrace_symbols_fd(backtraceArray, size, STDERR_FILENO); fprintf(stderr, "\n" "To make the above information more practical to work with, " |