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-rw-r--r--CRT.c79
1 files changed, 69 insertions, 10 deletions
diff --git a/CRT.c b/CRT.c
index 2533f61..ce59994 100644
--- a/CRT.c
+++ b/CRT.c
@@ -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, "

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