From: "Максим Корякшин via Tarantool-patches" <tarantool-patches@dev.tarantool.org> To: "Igor Munkin" <imun@tarantool.org> Cc: tarantool-patches@dev.tarantool.org Subject: Re: [Tarantool-patches] [PATCH luajit v2] luajit-gdb: support dualnum mode Date: Mon, 16 Aug 2021 13:01:43 +0300 [thread overview] Message-ID: <1629108103.120226674@f190.i.mail.ru> (raw) In-Reply-To: <20210816084902.GS27855@tarantool.org> [-- Attachment #1: Type: text/plain, Size: 3104 bytes --] Hello, Igor! Thanks for your comments! Here is the new commit message: ========================================================= gdb: support LJ_DUALNUM mode luajit-gdb.py displays integers in LJ_DUALNUM mode as nan-s. The dumper function produces output considering any input value as a double. However, in LJ_DUALNUM mode, integers and doubles are stored differently, so the `itype` of a double must be less than `LJ_TISNUM`, and the `itype` of an integer must be `LJ_TISNUM`. With this fact in mind, we can easily differentiate one from another. Closes tarantool/tarantool#6224 ========================================================= Here is the diff: ========================================================= diff --git a/src/luajit-gdb.py b/src/luajit-gdb.py index 9ccca66a..25428745 100644 --- a/src/luajit-gdb.py +++ b/src/luajit-gdb.py @@ -507,10 +507,14 @@ pointers respectively. ''' def invoke(self, arg, from_tty): - gdb.write('LJ_64: {LJ_64}, LJ_GC64: {LJ_GC64}\n'.format( - LJ_64 = LJ_64, - LJ_GC64 = LJ_GC64 - )) + gdb.write( + 'LJ_64: {LJ_64}, LJ_GC64: {LJ_GC64}, LJ_DUALNUM : {LJ_DUALNUM}\n' + .format( + LJ_64 = LJ_64, + LJ_GC64 = LJ_GC64, + LJ_DUALNUM = LJ_DUALNUM + ) + ) class LJDumpTValue(LJBase): ''' @@ -690,7 +694,7 @@ The command requires no args and dumps current GC stats: )) def init(commands): - global LJ_64, LJ_GC64, LJ_DUALNUM, LJ_TISNUM, LJ_FR2, PADDING + global LJ_64, LJ_GC64, LJ_FR2, LJ_DUALNUM, LJ_TISNUM, PADDING # XXX Fragile: though connecting the callback looks like a crap but it # respects both Python 2 and Python 3 (see #4828). @@ -731,7 +735,7 @@ def init(commands): try: LJ_64 = str(gdb.parse_and_eval('IRT_PTR')) == 'IRT_P64' LJ_FR2 = LJ_GC64 = str(gdb.parse_and_eval('IRT_PGC')) == 'IRT_P64' - LJ_DUALNUM = lookup('lj_lib_checknumber') is not None + LJ_DUALNUM = gdb.lookup_global_symbol('lj_lib_checknumber') is not None except: gdb.write('luajit-gdb.py failed to load: ' 'no debugging symbols found for libluajit\n') ========================================================= > >>Max, >> >>Thanks for the patch! Please consider the comments below. ><snipped> >>> def tvislightud(o): >>> if LJ_64 and not LJ_GC64: >>> @@ -343,7 +346,10 @@ def dump_lj_tudata(tv): >>> return 'userdata @ {}'.format(strx64(gcval(tv['gcr']))) >>> >>> def dump_lj_tnumx(tv): >>> - return 'number {}'.format(cast('double', tv['n'])) >>> + if tvisint(tv): >>> + return 'number {}'.format(cast('int32_t', tv['i'])) >> >>Side note: Agree with Sergey here. It is more convenient to understand >>that TValue structure for integer slot differs from double. >I have already fixed the output format here with the fix for v2 of the patch. ><snipped> > >Best regards, >Maxim Kokryashkin > [-- Attachment #2: Type: text/html, Size: 4639 bytes --]
next prev parent reply other threads:[~2021-08-16 10:01 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-31 13:36 [Tarantool-patches] [PATCH luajit] " Maxim Kokryashkin via Tarantool-patches 2021-08-11 8:27 ` Sergey Kaplun via Tarantool-patches 2021-08-13 14:29 ` Максим Корякшин via Tarantool-patches 2021-08-14 11:38 ` [Tarantool-patches] [PATCH luajit v2] " Maxim Kokryashkin via Tarantool-patches 2021-08-14 13:36 ` Максим Корякшин via Tarantool-patches 2021-08-14 13:47 ` Sergey Kaplun via Tarantool-patches 2021-08-14 17:26 ` Максим Корякшин via Tarantool-patches 2021-08-17 7:56 ` Igor Munkin via Tarantool-patches 2021-08-16 8:49 ` Igor Munkin via Tarantool-patches 2021-08-16 10:01 ` Максим Корякшин via Tarantool-patches [this message] 2021-08-16 16:23 ` Vitaliia Ioffe via Tarantool-patches 2021-08-17 7:47 ` Igor Munkin via Tarantool-patches 2021-08-17 9:23 ` [Tarantool-patches] [PATCH luajit] " Igor Munkin via Tarantool-patches
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