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* exceptions.h: Clean up some comments on catch_exceptions usage.

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* exceptions.c: Ditto.  Plus mark catch_errors as superseded by
	catch_exceptions.
This commit is contained in:
Doug Evans
2009-03-13 17:26:59 +00:00
parent 3516e9841c
commit 787274f042
3 changed files with 31 additions and 22 deletions
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15
gdb/exceptions.h
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@ -180,7 +180,7 @@ extern NORETURN void deprecated_throw_reason (enum return_reason reason) ATTR_NO
throw_exception() than all cleanups installed since
catch_exceptions() was entered are invoked, the (-ve) exception
value is then returned by catch_exceptions. If FUNC() returns
normally (with a postive or zero return value) then that value is
normally (with a positive or zero return value) then that value is
returned by catch_exceptions(). It is an internal_error() for
FUNC() to return a negative value.
@ -194,10 +194,19 @@ extern NORETURN void deprecated_throw_reason (enum return_reason reason) ATTR_NO
copy of the gdb error message. This is used when a silent error is
issued and the caller wants to manually issue the error message.
MASK specifies what to catch; it is normally set to
RETURN_MASK_ALL, if for no other reason than that the code which
calls catch_errors might not be set up to deal with a quit which
isn't caught. But if the code can deal with it, it generally
should be RETURN_MASK_ERROR, unless for some reason it is more
useful to abort only the portion of the operation inside the
catch_errors. Note that quit should return to the command line
fairly quickly, even if some further processing is being done.
FIXME; cagney/2001-08-13: The need to override the global UIOUT
builder variable should just go away.
This function superseeds catch_errors().
This function supersedes catch_errors().
This function uses SETJMP() and LONGJUMP(). */
@ -228,7 +237,7 @@ extern struct gdb_exception catch_exception (struct ui_out *uiout,
indication of the exact exception that it caught - quit_flag might
help.
This function is superseeded by catch_exceptions(). */
This function is superseded by catch_exceptions(). */
typedef int (catch_errors_ftype) (void *);
extern int catch_errors (catch_errors_ftype *, void *, char *, return_mask);