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Bug#37003 Tests sporadically crashes with embedded server

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Another problem is that the backtrace facility wasn't being
enabled for non-Linux targets even if the target OS has the
backtrace functions. Also, the stacktrace functions inside
mysqltest were being used without proper checks for their
presence in the build.


client/mysqltest.c:
  Only use stacktrace functions if they are available.
configure.in:
  Check if the compiler defines __bss_start
include/my_stacktrace.h:
  Enable stacktrace if system has backtrace functions.
mysys/stacktrace.c:
  Use backtrace functions if the system supports it.
sql/mysqld.cc:
  Only use stacktrace functions if they are available.
This commit is contained in:
Davi Arnaut
2008-06-19 11:02:32 -03:00
parent fb8f32d077
commit fcaaee6317
5 changed files with 107 additions and 71 deletions
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134
mysys/stacktrace.c
View File

@ -34,11 +34,16 @@
#define PTR_SANE(p) ((p) && (char*)(p) >= heap_start && (char*)(p) <= heap_end)
static char *heap_start;
#ifdef HAVE_BSS_START
extern char *__bss_start;
#endif
void my_init_stacktrace()
{
#ifdef HAVE_BSS_START
heap_start = (char*) &__bss_start;
#endif
}
void my_safe_print_str(const char* name, const char* val, int max_len)
@ -58,7 +63,68 @@ void my_safe_print_str(const char* name, const char* val, int max_len)
fputc('\n', stderr);
}
#ifdef TARGET_OS_LINUX
#if HAVE_BACKTRACE && (HAVE_BACKTRACE_SYMBOLS || HAVE_BACKTRACE_SYMBOLS_FD)
#if BACKTRACE_DEMANGLE
char __attribute__ ((weak)) *my_demangle(const char *mangled_name, int *status)
{
return NULL;
}
static void my_demangle_symbols(char **addrs, int n)
{
int status, i;
char *begin, *end, *demangled;
for (i= 0; i < n; i++)
{
demangled= NULL;
begin= strchr(addrs[i], '(');
end= begin ? strchr(begin, '+') : NULL;
if (begin && end)
{
*begin++= *end++= '\0';
demangled= my_demangle(begin, &status);
if (!demangled || status)
{
demangled= NULL;
begin[-1]= '(';
end[-1]= '+';
}
}
if (demangled)
fprintf(stderr, "%s(%s+%s\n", addrs[i], demangled, end);
else
fprintf(stderr, "%s\n", addrs[i]);
}
}
#endif /* BACKTRACE_DEMANGLE */
void my_print_stacktrace(uchar* stack_bottom, ulong thread_stack)
{
void *addrs[128];
char **strings= NULL;
int n = backtrace(addrs, array_elements(addrs));
#if BACKTRACE_DEMANGLE
if ((strings= backtrace_symbols(addrs, n)))
{
my_demangle_symbols(strings, n);
free(strings);
}
#endif
#if HAVE_BACKTRACE_SYMBOLS_FD
if (!strings)
{
backtrace_symbols_fd(addrs, n, fileno(stderr));
}
#endif
}
#elif defined(TARGET_OS_LINUX)
#ifdef __i386__
#define SIGRETURN_FRAME_OFFSET 17
@ -108,74 +174,8 @@ inline uint32* find_prev_pc(uint32* pc, uchar** fp)
}
#endif /* defined(__alpha__) && defined(__GNUC__) */
#if BACKTRACE_DEMANGLE
char __attribute__ ((weak)) *my_demangle(const char *mangled_name, int *status)
{
return NULL;
}
static void my_demangle_symbols(char **addrs, int n)
{
int status, i;
char *begin, *end, *demangled;
for (i= 0; i < n; i++)
{
demangled= NULL;
begin= strchr(addrs[i], '(');
end= begin ? strchr(begin, '+') : NULL;
if (begin && end)
{
*begin++= *end++= '\0';
demangled= my_demangle(begin, &status);
if (!demangled || status)
{
demangled= NULL;
begin[-1]= '(';
end[-1]= '+';
}
}
if (demangled)
fprintf(stderr, "%s(%s+%s\n", addrs[i], demangled, end);
else
fprintf(stderr, "%s\n", addrs[i]);
}
}
#endif
#if HAVE_BACKTRACE
static void backtrace_current_thread(void)
{
void *addrs[128];
char **strings= NULL;
int n = backtrace(addrs, array_elements(addrs));
#if BACKTRACE_DEMANGLE
if ((strings= backtrace_symbols(addrs, n)))
{
my_demangle_symbols(strings, n);
free(strings);
}
#endif
#if HAVE_BACKTRACE_SYMBOLS_FD
if (!strings)
{
backtrace_symbols_fd(addrs, n, fileno(stderr));
}
#endif
}
#endif
void my_print_stacktrace(uchar* stack_bottom, ulong thread_stack)
{
#if HAVE_BACKTRACE
backtrace_current_thread();
return;
#endif
uchar** fp;
uint frame_count = 0, sigreturn_frame_count;
#if defined(__alpha__) && defined(__GNUC__)