-/*
- * mini-exceptions.c: generic exception support
+/**
+ * \file
+ * generic exception support
*
* Authors:
* Dietmar Maurer (dietmar@ximian.com)
#include "seq-points.h"
#include "llvm-runtime.h"
#include "mini-llvm.h"
+#include "interp/interp.h"
#ifdef ENABLE_LLVM
#include "mini-llvm-cpp.h"
return above_threshold;
}
+static int
+mono_get_seq_point_for_native_offset (MonoDomain *domain, MonoMethod *method, gint32 native_offset)
+{
+ SeqPoint sp;
+ if (mono_find_prev_seq_point_for_native_offset (domain, method, native_offset, NULL, &sp))
+ return sp.il_offset;
+ return -1;
+}
+
void
mono_exceptions_init (void)
{
#ifdef MONO_ARCH_HAVE_EXCEPTIONS_INIT
mono_arch_exceptions_init ();
#endif
- cbs.mono_walk_stack_with_ctx = mono_runtime_walk_stack_with_ctx;
+#ifdef ENABLE_INTERPRETER
+ if (mono_use_interpreter)
+ cbs.mono_walk_stack_with_ctx = interp_walk_stack_with_ctx;
+ else
+#endif
+ cbs.mono_walk_stack_with_ctx = mono_runtime_walk_stack_with_ctx;
+
cbs.mono_walk_stack_with_state = mono_walk_stack_with_state;
if (mono_llvm_only)
cbs.mono_clear_abort_threshold = mini_clear_abort_threshold;
cbs.mono_above_abort_threshold = mini_above_abort_threshold;
mono_install_eh_callbacks (&cbs);
+ mono_install_get_seq_point (mono_get_seq_point_for_native_offset);
}
gpointer
/**
* mono_exception_walk_native_trace:
- * @ex: The exception object whose frames should be walked
- * @func: callback to call for each stack frame
- * @user_data: data passed to the callback
- *
+ * \param ex The exception object whose frames should be walked
+ * \param func callback to call for each stack frame
+ * \param user_data data passed to the callback
* This function walks the stacktrace of an exception. For
* each frame the callback function is called with the relevant info.
* The walk ends when no more stack frames are found or when the callback
}
/**
* mono_walk_stack_with_ctx:
- *
- * Unwind the current thread starting at @start_ctx.
- *
- * If @start_ctx is null, we capture the current context.
+ * Unwind the current thread starting at \p start_ctx.
+ * If \p start_ctx is null, we capture the current context.
*/
void
mono_walk_stack_with_ctx (MonoJitStackWalk func, MonoContext *start_ctx, MonoUnwindOptions unwind_options, void *user_data)
/**
* mono_walk_stack_with_state:
- *
- * Unwind a thread described by @state.
+ * Unwind a thread described by \p state.
*
* State must be valid (state->valid == TRUE).
*
* If you are using this function to unwind another thread, make sure it is suspended.
*
- * If @state is null, we capture the current context.
+ * If \p state is null, we capture the current context.
*/
void
mono_walk_stack_with_state (MonoJitStackWalk func, MonoThreadUnwindState *state, MonoUnwindOptions unwind_options, void *user_data)
/**
* mono_walk_stack_full:
- * @func: callback to call for each stack frame
- * @domain: starting appdomain, can be NULL to use the current domain
- * @unwind_options: what extra information the unwinder should gather
- * @start_ctx: starting state of the stack walk, can be NULL.
- * @thread: the thread whose stack to walk, can be NULL to use the current thread
- * @lmf: the LMF of @thread, can be NULL to use the LMF of the current thread
- * @user_data: data passed to the callback
- *
+ * \param func callback to call for each stack frame
+ * \param domain starting appdomain, can be NULL to use the current domain
+ * \param unwind_options what extra information the unwinder should gather
+ * \param start_ctx starting state of the stack walk, can be NULL.
+ * \param thread the thread whose stack to walk, can be NULL to use the current thread
+ * \param lmf the LMF of \p thread, can be NULL to use the LMF of the current thread
+ * \param user_data data passed to the callback
* This function walks the stack of a thread, starting from the state
- * represented by start_ctx. For each frame the callback
+ * represented by \p start_ctx. For each frame the callback
* function is called with the relevant info. The walk ends when no more
* managed stack frames are found or when the callback returns a TRUE value.
*/
}
/* Class lazy loading functions */
-static GENERATE_GET_CLASS_WITH_CACHE (runtime_compat_attr, System.Runtime.CompilerServices, RuntimeCompatibilityAttribute)
+static GENERATE_GET_CLASS_WITH_CACHE (runtime_compat_attr, "System.Runtime.CompilerServices", "RuntimeCompatibilityAttribute")
/*
* wrap_non_exception_throws:
static MonoArray*
build_native_trace (MonoError *error)
{
- mono_error_init (error);
+ error_init (error);
/* This puppy only makes sense on mobile, IOW, ARM. */
#if defined (HAVE_BACKTRACE_SYMBOLS) && defined (TARGET_ARM)
MonoArray *res;
}
static void
-setup_stack_trace (MonoException *mono_ex, GSList *dynamic_methods, MonoArray *initial_trace_ips, GList **trace_ips)
+setup_stack_trace (MonoException *mono_ex, GSList *dynamic_methods, GList **trace_ips)
{
- if (mono_ex && !initial_trace_ips) {
+ if (mono_ex) {
*trace_ips = g_list_reverse (*trace_ips);
MonoError error;
MonoArray *ips_arr = mono_glist_to_array (*trace_ips, mono_defaults.int_class, &error);
static int (*call_filter) (MonoContext *, gpointer) = NULL;
MonoJitTlsData *jit_tls = (MonoJitTlsData *)mono_tls_get_jit_tls ();
MonoLMF *lmf = mono_get_lmf ();
- MonoArray *initial_trace_ips = NULL;
GList *trace_ips = NULL;
GSList *dynamic_methods = NULL;
MonoException *mono_ex;
stack_overflow = TRUE;
mono_ex = (MonoException*)obj;
- initial_trace_ips = mono_ex->trace_ips;
+ MonoArray *initial_trace_ips = mono_ex->trace_ips;
+ if (initial_trace_ips) {
+ int len = mono_array_length (initial_trace_ips) >> 1;
+
+ for (i = 0; i < (len - 1); i++) {
+ gpointer ip = mono_array_get (initial_trace_ips, gpointer, i * 2 + 0);
+ gpointer generic_info = mono_array_get (initial_trace_ips, gpointer, i * 2 + 1);
+ trace_ips = g_list_prepend (trace_ips, ip);
+ trace_ips = g_list_prepend (trace_ips, generic_info);
+ }
+ }
- if (mono_object_isinst_checked (obj, mono_defaults.exception_class, &error)) {
- mono_ex = (MonoException*)obj;
- initial_trace_ips = mono_ex->trace_ips;
- } else {
+ if (!mono_object_isinst_checked (obj, mono_defaults.exception_class, &error)) {
mono_error_assert_ok (&error);
mono_ex = NULL;
}
}
if (!unwind_res) {
- setup_stack_trace (mono_ex, dynamic_methods, initial_trace_ips, &trace_ips);
+ setup_stack_trace (mono_ex, dynamic_methods, &trace_ips);
g_slist_free (dynamic_methods);
return FALSE;
}
}
if (method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE && mono_ex) {
- /*
- * Avoid overwriting the stack trace if the exception is
- * rethrown. Also avoid giant stack traces during a stack
- * overflow.
- */
- if (!initial_trace_ips && (frame_count < 1000)) {
+ // avoid giant stack traces during a stack overflow
+ if (frame_count < 1000) {
trace_ips = g_list_prepend (trace_ips, MONO_CONTEXT_GET_IP (ctx));
- trace_ips = g_list_prepend (trace_ips,
- get_generic_info_from_stack_frame (ji, ctx));
+ trace_ips = g_list_prepend (trace_ips, get_generic_info_from_stack_frame (ji, ctx));
}
}
ex_obj = obj;
if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
- gboolean is_user_frame = method->wrapper_type == MONO_WRAPPER_NONE || method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD;
#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->exceptions_filters++;
#endif
- /*
- Here's the thing, if this is a filter clause done by a wrapper like runtime invoke, we don't want to
- trim the stackframe since if it returns FALSE we lose information.
-
- FIXME Not 100% sure if it's a good idea even with user clauses.
- */
- if (is_user_frame)
- setup_stack_trace (mono_ex, dynamic_methods, initial_trace_ips, &trace_ips);
#ifndef MONO_CROSS_COMPILE
#ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
filter_idx ++;
if (filtered) {
- if (!is_user_frame)
- setup_stack_trace (mono_ex, dynamic_methods, initial_trace_ips, &trace_ips);
+ setup_stack_trace (mono_ex, dynamic_methods, &trace_ips);
g_slist_free (dynamic_methods);
/* mono_debugger_agent_handle_exception () needs this */
mini_set_abort_threshold (ctx);
}
MonoError isinst_error;
- mono_error_init (&isinst_error);
+ error_init (&isinst_error);
if (ei->flags == MONO_EXCEPTION_CLAUSE_NONE && mono_object_isinst_checked (ex_obj, catch_class, &error)) {
- setup_stack_trace (mono_ex, dynamic_methods, initial_trace_ips, &trace_ips);
+ setup_stack_trace (mono_ex, dynamic_methods, &trace_ips);
g_slist_free (dynamic_methods);
if (out_ji)
/**
* mono_handle_exception_internal:
- * @ctx: saved processor state
- * @obj: the exception object
- * @resume: whenever to resume unwinding based on the state in MonoJitTlsData.
+ * \param ctx saved processor state
+ * \param obj the exception object
+ * \param resume whenever to resume unwinding based on the state in \c MonoJitTlsData.
*/
static gboolean
mono_handle_exception_internal (MonoContext *ctx, MonoObject *obj, gboolean resume, MonoJitInfo **out_ji)
filter_idx ++;
}
- mono_error_init (&error);
+ error_init (&error);
if ((ei->flags == MONO_EXCEPTION_CLAUSE_NONE &&
mono_object_isinst_checked (ex_obj, catch_class, &error)) || filtered) {
/*
if (is_outside) {
jit_tls->handler_block_return_address = NULL;
jit_tls->handler_block = NULL;
- mono_thread_resume_interruption (); /*We ignore the exception here, it will be raised later*/
+ mono_thread_resume_interruption (TRUE); /*We ignore the exception here, it will be raised later*/
}
}
/**
* mono_debugger_run_finally:
- * @start_ctx: saved processor state
- *
- * This method is called by the Mono Debugger to call all `finally' clauses of the
- * current stack frame. It's used when the user issues a `return' command to make
+ * \param start_ctx saved processor state
+ * This method is called by the Mono Debugger to call all \c finally clauses of the
+ * current stack frame. It's used when the user issues a \c return command to make
* the current stack frame return. After returning from this method, the debugger
* unwinds the stack one frame and gives control back to the user.
- *
* NOTE: This method is only used when running inside the Mono Debugger.
*/
void
/**
* mono_handle_exception:
- * @ctx: saved processor state
- * @obj: the exception object
+ * \param ctx saved processor state
+ * \param obj the exception object
*/
gboolean
mono_handle_exception (MonoContext *ctx, MonoObject *obj)
#ifndef MONO_CROSS_COMPILE
+static void print_process_map (void)
+{
+#ifdef __linux__
+ FILE *fp = fopen ("/proc/self/maps", "r");
+ char line [256];
+
+ if (fp == NULL) {
+ mono_runtime_printf_err ("no /proc/self/maps, not on linux?\n");
+ return;
+ }
+
+ mono_runtime_printf_err ("/proc/self/maps:");
+
+ while (fgets (line, sizeof (line), fp)) {
+ // strip newline
+ size_t len = strlen (line) - 1;
+ if (len >= 0 && line [len] == '\n')
+ line [len] = '\0';
+
+ mono_runtime_printf_err ("%s", line);
+ }
+
+ fclose (fp);
+#else
+ /* do nothing */
+#endif
+}
+
static gboolean handling_sigsegv = FALSE;
/*
#endif
MonoJitTlsData *jit_tls = (MonoJitTlsData *)mono_tls_get_jit_tls ();
- if (handling_sigsegv)
+ gboolean is_sigsegv = !strcmp ("SIGSEGV", signal);
+
+ if (handling_sigsegv && is_sigsegv)
return;
- if (mini_get_debug_options ()->suspend_on_sigsegv) {
+ if (mini_get_debug_options ()->suspend_on_native_crash) {
mono_runtime_printf_err ("Received %s, suspending...", signal);
#ifdef HOST_WIN32
while (1)
}
/* To prevent infinite loops when the stack walk causes a crash */
- handling_sigsegv = TRUE;
+ if (is_sigsegv)
+ handling_sigsegv = TRUE;
/* !jit_tls means the thread was not registered with the runtime */
if (jit_tls && mono_thread_internal_current ()) {
mono_walk_stack (print_stack_frame_to_stderr, MONO_UNWIND_LOOKUP_IL_OFFSET, NULL);
}
+ print_process_map ();
+
#ifdef HAVE_BACKTRACE_SYMBOLS
{
void *array [256];
int status;
pid_t crashed_pid = getpid ();
- //pid = fork ();
/*
* glibc fork acquires some locks, so if the crash happened inside malloc/free,
* it will deadlock. Call the syscall directly instead.
*/
- pid = mono_runtime_syscall_fork ();
+#if defined(PLATFORM_ANDROID)
+ /* SYS_fork is defined to be __NR_fork which is not defined in some ndk versions */
+ g_assert_not_reached ();
+#elif !defined(PLATFORM_MACOSX) && defined(SYS_fork)
+ pid = (pid_t) syscall (SYS_fork);
+#elif defined(PLATFORM_MACOSX) && HAVE_FORK
+ pid = (pid_t) fork ();
+#else
+ g_assert_not_reached ();
+#endif
+
#if defined (HAVE_PRCTL) && defined(PR_SET_PTRACER)
if (pid > 0) {
// Allow gdb to attach to the process even if ptrace_scope sysctl variable is set to
#endif
}
#else
- mono_exception_native_unwind (ctx, info);
+#ifdef PLATFORM_ANDROID
+ /* set DUMPABLE for this process so debuggerd can attach with ptrace(2), see:
+ * https://android.googlesource.com/platform/bionic/+/151da681000c07da3c24cd30a3279b1ca017f452/linker/debugger.cpp#206
+ * this has changed on later versions of Android. Also, we don't want to
+ * set this on start-up as DUMPABLE has security implications. */
+ prctl (PR_SET_DUMPABLE, 1);
+
+ mono_runtime_printf_err ("\nNo native Android stacktrace (see debuggerd output).\n");
+#endif
#endif
/*
"=================================================================\n",
signal);
-
#ifdef MONO_ARCH_USE_SIGACTION
-
- /* Remove our SIGABRT handler */
sa.sa_handler = SIG_DFL;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
+ /* Remove our SIGABRT handler */
g_assert (sigaction (SIGABRT, &sa, NULL) != -1);
+ /* On some systems we get a SIGILL when calling abort (), because it might
+ * fail to raise SIGABRT */
+ g_assert (sigaction (SIGILL, &sa, NULL) != -1);
#endif
if (!mono_do_crash_chaining) {
mono_runtime_stdout_fflush ();
}
-/*
+/**
* mono_print_thread_dump:
*
- * Print information about the current thread to stdout.
- * SIGCTX can be NULL, allowing this to be called from gdb.
+ * Print information about the current thread to stdout.
+ * \p sigctx can be NULL, allowing this to be called from gdb.
*/
void
mono_print_thread_dump (void *sigctx)
MonoThreadInfo *thread = mono_thread_info_current_unchecked ();
if (!thread) {
ctx->valid = FALSE;
- g_error ("Invoked mono_thread_state_init_from_sigctx from non-Mono thread");
return FALSE;
}
projects / mono.git / blobdiff