[RFA] let record_resume fail immediately on error

Hui Zhu teawater@gmail.com
Sat Dec 12 08:41:00 GMT 2009


Ping.

Thanks,
Hui

On Wed, Dec 2, 2009 at 11:22, Hui Zhu <teawater@gmail.com> wrote:
> Thanks Tom,
>
> I make a new patch according it.  Please help me review it.
>
> Thanks,
> Hui
>
> 2009-12-02  Hui Zhu  <teawater@gmail.com>
>
>        * record.c (record_message): Change argument.
>        (record_message_wrapper): New function.
>        (do_record_message): Change it name to
>        "record_message_wrapper_safe".
>        Let it call "record_message_wrapper".
>        (record_resume_error): Deleted.
>        (record_resume): Call "record_message".
>        (record_wait): Deleted record_resume_error.
>        Call "record_message_wrapper_safe".
>        Set status when do_record_message need stop the inferior.
> 2009-12-02  Hui Zhu  <teawater@gmail.com>
>
>        * gdb.reverse/sigall-reverse.exp: Adjust.
>
> ---
>  record.c                                 |   70 ++++++++++++++-----------------
>  testsuite/gdb.reverse/sigall-reverse.exp |    2
>  2 files changed, 34 insertions(+), 38 deletions(-)
>
> --- a/record.c
> +++ b/record.c
> @@ -572,17 +572,11 @@ record_arch_list_cleanups (void *ignore)
>    record the running message of inferior and set them to
>    record_arch_list, and add it to record_list.  */
>
> -struct record_message_args {
> -  struct regcache *regcache;
> -  enum target_signal signal;
> -};
> -
>  static int
> -record_message (void *args)
> +record_message (struct regcache *regcache, enum target_signal signal)
>  {
>   int ret;
> -  struct record_message_args *myargs = args;
> -  struct gdbarch *gdbarch = get_regcache_arch (myargs->regcache);
> +  struct gdbarch *gdbarch = get_regcache_arch (regcache);
>   struct cleanup *old_cleanups = make_cleanup (record_arch_list_cleanups, 0);
>
>   record_arch_list_head = NULL;
> @@ -616,18 +610,18 @@ record_message (void *args)
>   if (record_list != &record_first)    /* FIXME better way to check */
>     {
>       gdb_assert (record_list->type == record_end);
> -      record_list->u.end.sigval = myargs->signal;
> +      record_list->u.end.sigval = signal;
>     }
>
> -  if (myargs->signal == TARGET_SIGNAL_0
> +  if (signal == TARGET_SIGNAL_0
>       || !gdbarch_process_record_signal_p (gdbarch))
>     ret = gdbarch_process_record (gdbarch,
> -                                 myargs->regcache,
> -                                 regcache_read_pc (myargs->regcache));
> +                                 regcache,
> +                                 regcache_read_pc (regcache));
>   else
>     ret = gdbarch_process_record_signal (gdbarch,
> -                                        myargs->regcache,
> -                                        myargs->signal);
> +                                        regcache,
> +                                        signal);
>
>   if (ret > 0)
>     error (_("Process record: inferior program stopped."));
> @@ -648,15 +642,29 @@ record_message (void *args)
>   return 1;
>  }
>
> +struct record_message_args {
> +  struct regcache *regcache;
> +  enum target_signal signal;
> +};
> +
>  static int
> -do_record_message (struct regcache *regcache,
> -                  enum target_signal signal)
> +record_message_wrapper (void *args)
> +{
> +  struct record_message_args *record_args = args;
> +
> +  return record_message (record_args->regcache, record_args->signal);
> +}
> +
> +static int
> +record_message_wrapper_safe (struct regcache *regcache,
> +                             enum target_signal signal)
>  {
>   struct record_message_args args;
>
>   args.regcache = regcache;
>   args.signal = signal;
> -  return catch_errors (record_message, &args, NULL, RETURN_MASK_ALL);
> +
> +  return catch_errors (record_message_wrapper, &args, NULL, RETURN_MASK_ALL);
>  }
>
>  /* Set to 1 if record_store_registers and record_xfer_partial
> @@ -983,7 +991,6 @@ record_close (int quitting)
>  }
>
>  static int record_resume_step = 0;
> -static int record_resume_error;
>
>  /* "to_resume" target method.  Resume the process record target.  */
>
> @@ -995,15 +1002,7 @@ record_resume (struct target_ops *ops, p
>
>   if (!RECORD_IS_REPLAY)
>     {
> -      if (do_record_message (get_current_regcache (), signal))
> -        {
> -          record_resume_error = 0;
> -        }
> -      else
> -        {
> -          record_resume_error = 1;
> -          return;
> -        }
> +      record_message (get_current_regcache (), signal);
>       record_beneath_to_resume (record_beneath_to_resume_ops, ptid, 1,
>                                 signal);
>     }
> @@ -1067,14 +1066,6 @@ record_wait (struct target_ops *ops,
>
>   if (!RECORD_IS_REPLAY && ops != &record_core_ops)
>     {
> -      if (record_resume_error)
> -       {
> -         /* If record_resume get error, return directly.  */
> -         status->kind = TARGET_WAITKIND_STOPPED;
> -         status->value.sig = TARGET_SIGNAL_ABRT;
> -         return inferior_ptid;
> -       }
> -
>       if (record_resume_step)
>        {
>          /* This is a single step.  */
> @@ -1130,8 +1121,13 @@ record_wait (struct target_ops *ops,
>                    {
>                      /* This must be a single-step trap.  Record the
>                         insn and issue another step.  */
> -                     if (!do_record_message (regcache, TARGET_SIGNAL_0))
> -                       break;
> +                     if (!record_message_wrapper_safe (regcache,
> +                                                        TARGET_SIGNAL_0))
> +                       {
> +                           status->kind = TARGET_WAITKIND_STOPPED;
> +                           status->value.sig = TARGET_SIGNAL_0;
> +                           break;
> +                       }
>
>                      record_beneath_to_resume (record_beneath_to_resume_ops,
>                                                ptid, 1,
> --- a/testsuite/gdb.reverse/sigall-reverse.exp
> +++ b/testsuite/gdb.reverse/sigall-reverse.exp
> @@ -262,7 +262,7 @@ gdb_test "continue" \
>     "get signal TERM"
>  gdb_test "continue" "Breakpoint.*handle_TERM.*" "send signal TERM"
>
> -gdb_test "continue" "Program received .*" "continue to sigall exit" \
> +gdb_test "continue" "\[process \[0-9\]+ .*" "continue to sigall exit" \
>     "The next instruction is syscall exit_group.* program...y. or n. " \
>     "yes"
>
-------------- next part --------------
---
 record.c                                 |   70 ++++++++++++++-----------------
 testsuite/gdb.reverse/sigall-reverse.exp |    2 
 2 files changed, 34 insertions(+), 38 deletions(-)

--- a/record.c
+++ b/record.c
@@ -572,17 +572,11 @@ record_arch_list_cleanups (void *ignore)
    record the running message of inferior and set them to
    record_arch_list, and add it to record_list.  */
 
-struct record_message_args {
-  struct regcache *regcache;
-  enum target_signal signal;
-};
-
 static int
-record_message (void *args)
+record_message (struct regcache *regcache, enum target_signal signal)
 {
   int ret;
-  struct record_message_args *myargs = args;
-  struct gdbarch *gdbarch = get_regcache_arch (myargs->regcache);
+  struct gdbarch *gdbarch = get_regcache_arch (regcache);
   struct cleanup *old_cleanups = make_cleanup (record_arch_list_cleanups, 0);
 
   record_arch_list_head = NULL;
@@ -616,18 +610,18 @@ record_message (void *args)
   if (record_list != &record_first)    /* FIXME better way to check */
     {
       gdb_assert (record_list->type == record_end);
-      record_list->u.end.sigval = myargs->signal;
+      record_list->u.end.sigval = signal;
     }
 
-  if (myargs->signal == TARGET_SIGNAL_0
+  if (signal == TARGET_SIGNAL_0
       || !gdbarch_process_record_signal_p (gdbarch))
     ret = gdbarch_process_record (gdbarch,
-				  myargs->regcache,
-				  regcache_read_pc (myargs->regcache));
+				  regcache,
+				  regcache_read_pc (regcache));
   else
     ret = gdbarch_process_record_signal (gdbarch,
-					 myargs->regcache,
-					 myargs->signal);
+					 regcache,
+					 signal);
 
   if (ret > 0)
     error (_("Process record: inferior program stopped."));
@@ -648,15 +642,29 @@ record_message (void *args)
   return 1;
 }
 
+struct record_message_args {
+  struct regcache *regcache;
+  enum target_signal signal;
+};
+
 static int
-do_record_message (struct regcache *regcache,
-		   enum target_signal signal)
+record_message_wrapper (void *args)
+{
+  struct record_message_args *record_args = args;
+
+  return record_message (record_args->regcache, record_args->signal);
+}
+
+static int
+record_message_wrapper_safe (struct regcache *regcache,
+                             enum target_signal signal)
 {
   struct record_message_args args;
 
   args.regcache = regcache;
   args.signal = signal;
-  return catch_errors (record_message, &args, NULL, RETURN_MASK_ALL);
+
+  return catch_errors (record_message_wrapper, &args, NULL, RETURN_MASK_ALL);
 }
 
 /* Set to 1 if record_store_registers and record_xfer_partial
@@ -983,7 +991,6 @@ record_close (int quitting)
 }
 
 static int record_resume_step = 0;
-static int record_resume_error;
 
 /* "to_resume" target method.  Resume the process record target.  */
 
@@ -995,15 +1002,7 @@ record_resume (struct target_ops *ops, p
 
   if (!RECORD_IS_REPLAY)
     {
-      if (do_record_message (get_current_regcache (), signal))
-        {
-          record_resume_error = 0;
-        }
-      else
-        {
-          record_resume_error = 1;
-          return;
-        }
+      record_message (get_current_regcache (), signal);
       record_beneath_to_resume (record_beneath_to_resume_ops, ptid, 1,
                                 signal);
     }
@@ -1067,14 +1066,6 @@ record_wait (struct target_ops *ops,
 
   if (!RECORD_IS_REPLAY && ops != &record_core_ops)
     {
-      if (record_resume_error)
-	{
-	  /* If record_resume get error, return directly.  */
-	  status->kind = TARGET_WAITKIND_STOPPED;
-	  status->value.sig = TARGET_SIGNAL_ABRT;
-	  return inferior_ptid;
-	}
-
       if (record_resume_step)
 	{
 	  /* This is a single step.  */
@@ -1130,8 +1121,13 @@ record_wait (struct target_ops *ops,
 		    {
 		      /* This must be a single-step trap.  Record the
 		         insn and issue another step.  */
-		      if (!do_record_message (regcache, TARGET_SIGNAL_0))
-			break;
+		      if (!record_message_wrapper_safe (regcache,
+                                                        TARGET_SIGNAL_0))
+  			{
+                           status->kind = TARGET_WAITKIND_STOPPED;
+                           status->value.sig = TARGET_SIGNAL_0;
+                           break;
+  			}
 
 		      record_beneath_to_resume (record_beneath_to_resume_ops,
 						ptid, 1,
--- a/testsuite/gdb.reverse/sigall-reverse.exp
+++ b/testsuite/gdb.reverse/sigall-reverse.exp
@@ -262,7 +262,7 @@ gdb_test "continue" \
     "get signal TERM"
 gdb_test "continue" "Breakpoint.*handle_TERM.*" "send signal TERM"
 
-gdb_test "continue" "Program received .*" "continue to sigall exit" \
+gdb_test "continue" "\[process \[0-9\]+ .*" "continue to sigall exit" \
     "The next instruction is syscall exit_group.* program...y. or n. " \
     "yes"
 


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