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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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26
client/mysqltest.c
View File

@@ -48,6 +48,7 @@
#ifdef __WIN__
#include <direct.h>
#endif
#include <signal.h>
#include <my_stacktrace.h>
#ifdef __WIN__
@@ -6847,12 +6848,12 @@ void mark_progress(struct st_command* command __attribute__((unused)),
}
#ifdef HAVE_STACKTRACE
static sig_handler dump_backtrace(int sig)
static void dump_backtrace(void)
{
struct st_connection *conn= cur_con;
fprintf(stderr, "mysqltest got " SIGNAL_FMT "\n", sig);
my_safe_print_str("read_command_buf", read_command_buf,
sizeof(read_command_buf));
if (conn)
@@ -6866,6 +6867,21 @@ static sig_handler dump_backtrace(int sig)
my_print_stacktrace(NULL, my_thread_stack_size);
}
#else
static void dump_backtrace(void)
{
fputs("Backtrace not available.\n", stderr);
}
#endif
static sig_handler signal_handler(int sig)
{
fprintf(stderr, "mysqltest got " SIGNAL_FMT "\n", sig);
dump_backtrace();
}
#ifdef __WIN__
LONG WINAPI exception_filter(EXCEPTION_POINTERS *exp)
@@ -6873,7 +6889,7 @@ LONG WINAPI exception_filter(EXCEPTION_POINTERS *exp)
__try
{
my_set_exception_pointers(exp);
dump_backtrace(exp->ExceptionRecord->ExceptionCode);
signal_handler(exp->ExceptionRecord->ExceptionCode);
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
@@ -6910,13 +6926,15 @@ static void init_signal_handling(void)
struct sigaction sa;
DBUG_ENTER("init_signal_handling");
#ifdef HAVE_STACKTRACE
my_init_stacktrace();
#endif
sa.sa_flags = SA_RESETHAND | SA_NODEFER;
sigemptyset(&sa.sa_mask);
sigprocmask(SIG_SETMASK, &sa.sa_mask, NULL);
sa.sa_handler= dump_backtrace;
sa.sa_handler= signal_handler;
sigaction(SIGSEGV, &sa, NULL);
sigaction(SIGABRT, &sa, NULL);