static void
SIG_HANDLER_SIGNATURE (sigquit_signal_handler)
{
gboolean res;
GET_CONTEXT;
/* We use this signal to start the attach agent too */
res = mono_attach_start ();
if (res)
return;
if (mono_thread_info_new_interrupt_enabled ()) {
mono_threads_request_thread_dump ();
} else {
printf ("Full thread dump:\n");
mono_threads_request_thread_dump ();
/*
* print_thread_dump () skips the current thread, since sending a signal
* to it would invoke the signal handler below the sigquit signal handler,
* and signal handlers don't create an lmf, so the stack walk could not
* be performed.
*/
mono_print_thread_dump (ctx);
}
mono_chain_signal (SIG_HANDLER_PARAMS);
}
SIG_HANDLER_FUNC (static, sigprof_signal_handler)
{
if (mono_chain_signal (SIG_HANDLER_PARAMS))
return;
NOT_IMPLEMENTED;
}
static void
SIG_HANDLER_SIGNATURE (sigprof_signal_handler)
{
if (mono_chain_signal (SIG_HANDLER_PARAMS))
return;
NOT_IMPLEMENTED;
}
SIG_HANDLER_FUNC (static, sigusr2_signal_handler)
{
gboolean enabled = mono_trace_is_enabled ();
mono_trace_enable (!enabled);
mono_chain_signal (SIG_HANDLER_PARAMS);
}
static void
SIG_HANDLER_SIGNATURE (sigusr2_signal_handler)
{
gboolean enabled = mono_trace_is_enabled ();
mono_trace_enable (!enabled);
mono_chain_signal (SIG_HANDLER_PARAMS);
}
SIG_HANDLER_FUNC (static, sigabrt_signal_handler)
{
MonoJitInfo *ji = NULL;
GET_CONTEXT;
if (mono_thread_internal_current ())
ji = mono_jit_info_table_find (mono_domain_get (), mono_arch_ip_from_context(ctx));
if (!ji) {
if (mono_chain_signal (SIG_HANDLER_PARAMS))
return;
mono_handle_native_sigsegv (SIGABRT, ctx);
}
}
MONO_SIG_HANDLER_FUNC (static, sigquit_signal_handler)
{
gboolean res;
/* We use this signal to start the attach agent too */
res = mono_attach_start ();
if (res)
return;
mono_threads_request_thread_dump ();
mono_chain_signal (MONO_SIG_HANDLER_PARAMS);
}
MONO_SIG_HANDLER_FUNC (static, sigabrt_signal_handler)
{
MonoJitInfo *ji = NULL;
MONO_SIG_HANDLER_INFO_TYPE *info = MONO_SIG_HANDLER_GET_INFO ();
MONO_SIG_HANDLER_GET_CONTEXT;
if (mono_thread_internal_current ())
ji = mono_jit_info_table_find_internal (mono_domain_get (), mono_arch_ip_from_context (ctx), TRUE, TRUE);
if (!ji) {
if (mono_chain_signal (MONO_SIG_HANDLER_PARAMS))
return;
mono_handle_native_crash ("SIGABRT", ctx, info);
}
}
MONO_SIG_HANDLER_FUNC (static, sigterm_signal_handler)
{
MONO_SIG_HANDLER_GET_CONTEXT;
// Note: this function only returns for a single thread
// When it's invoked on other threads once the dump begins,
// those threads perform their dumps and then sleep until we
// die. The dump ends with the exit(1) below
MonoContext mctx;
gchar *output = NULL;
mono_sigctx_to_monoctx (ctx, &mctx);
if (!mono_threads_summarize (&mctx, &output, NULL))
g_assert_not_reached ();
// Only the dumping-supervisor thread exits mono_thread_summarize
MOSTLY_ASYNC_SAFE_PRINTF("Unhandled exception dump: \n######\n%s\n######\n", output);
mono_chain_signal (MONO_SIG_HANDLER_PARAMS);
exit (1);
}
MONO_SIG_HANDLER_FUNC (static, profiler_signal_handler)
{
int old_errno = errno;
MONO_SIG_HANDLER_GET_CONTEXT;
/* See the comment in mono_runtime_shutdown_stat_profiler (). */
if (mono_native_thread_id_get () == sampling_thread) {
mono_atomic_inc_i32 (&profiler_interrupt_signals_received);
return;
}
mono_atomic_inc_i32 (&profiler_signals_received);
// Did a non-attached or detaching thread get the signal?
if (mono_thread_info_get_small_id () == -1 ||
!mono_domain_get () ||
!mono_tls_get_jit_tls ()) {
errno = old_errno;
return;
}
// See the comment in sampling_thread_func ().
mono_atomic_store_i32 (&mono_thread_info_current ()->profiler_signal_ack, 1);
mono_atomic_inc_i32 (&profiler_signals_accepted);
int hp_save_index = mono_hazard_pointer_save_for_signal_handler ();
mono_thread_info_set_is_async_context (TRUE);
MONO_PROFILER_RAISE (sample_hit, (mono_arch_ip_from_context (ctx), ctx));
mono_thread_info_set_is_async_context (FALSE);
mono_hazard_pointer_restore_for_signal_handler (hp_save_index);
errno = old_errno;
mono_chain_signal (MONO_SIG_HANDLER_PARAMS);
}
static void
SIG_HANDLER_SIGNATURE (sigprof_signal_handler)
{
int call_chain_depth = mono_profiler_stat_get_call_chain_depth ();
MonoProfilerCallChainStrategy call_chain_strategy = mono_profiler_stat_get_call_chain_strategy ();
GET_CONTEXT;
if (call_chain_depth == 0) {
mono_profiler_stat_hit (mono_arch_ip_from_context (ctx), ctx);
} else {
MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
int current_frame_index = 1;
MonoContext mono_context;
guchar *ips [call_chain_depth + 1];
mono_arch_sigctx_to_monoctx (ctx, &mono_context);
ips [0] = MONO_CONTEXT_GET_IP (&mono_context);
if (jit_tls != NULL) {
if (call_chain_strategy == MONO_PROFILER_CALL_CHAIN_NATIVE) {
#if FULL_STAT_PROFILER_BACKTRACE
guchar *current_frame;
guchar *stack_bottom;
guchar *stack_top;
stack_bottom = jit_tls->end_of_stack;
stack_top = MONO_CONTEXT_GET_SP (&mono_context);
current_frame = MONO_CONTEXT_GET_BP (&mono_context);
while ((current_frame_index <= call_chain_depth) &&
(stack_bottom IS_BEFORE_ON_STACK (guchar*) current_frame) &&
((guchar*) current_frame IS_BEFORE_ON_STACK stack_top)) {
ips [current_frame_index] = CURRENT_FRAME_GET_RETURN_ADDRESS (current_frame);
current_frame_index ++;
stack_top = current_frame;
current_frame = CURRENT_FRAME_GET_BASE_POINTER (current_frame);
}
#else
call_chain_strategy = MONO_PROFILER_CALL_CHAIN_GLIBC;
#endif
}
if (call_chain_strategy == MONO_PROFILER_CALL_CHAIN_GLIBC) {
#if GLIBC_PROFILER_BACKTRACE
current_frame_index = backtrace ((void**) & ips [1], call_chain_depth);
#else
call_chain_strategy = MONO_PROFILER_CALL_CHAIN_MANAGED;
#endif
}
if (call_chain_strategy == MONO_PROFILER_CALL_CHAIN_MANAGED) {
MonoDomain *domain = mono_domain_get ();
if (domain != NULL) {
MonoLMF *lmf = NULL;
MonoJitInfo *ji;
MonoJitInfo res;
MonoContext new_mono_context;
int native_offset;
ji = mono_find_jit_info (domain, jit_tls, &res, NULL, &mono_context,
&new_mono_context, NULL, &lmf, &native_offset, NULL);
while ((ji != NULL) && (current_frame_index <= call_chain_depth)) {
ips [current_frame_index] = MONO_CONTEXT_GET_IP (&new_mono_context);
current_frame_index ++;
mono_context = new_mono_context;
ji = mono_find_jit_info (domain, jit_tls, &res, NULL, &mono_context,
&new_mono_context, NULL, &lmf, &native_offset, NULL);
}
}
}
}
mono_profiler_stat_call_chain (current_frame_index, & ips [0], ctx);
}
mono_chain_signal (SIG_HANDLER_PARAMS);
}
