[Tarantool-patches] [PATCH luajit v7] memprof: introduce cli flag to run dump parser

[Sergey Bronnikov]

Max, thanks for the <s>cake</s> patches! LGTM


On 7/14/23 15:41, Maxim Kokryashkin wrote:
> Hi! Thanks for the review.
>
>         Hello, Max!
>
>         Thanks for the patch! See my comments.
>
>
>         Sergey
>
>         On 7/10/23 14:24, Maksim Kokryashkin wrote:
>         > From: Maxim Kokryashkin <m.kokryashkin at tarantool.org
>         </compose?To=m.kokryashkin at tarantool.org>>
>         >
>         > It is really inconvenient to use a standalone shell script
>         to parse
>         > memprof dump. That is why this commit introduces a CLI flag
>         for tools
>         > to the LuaJIT, so now it is possible to parse memprof dump
>         > as simple as:
>         > ```
>         > luajit -tm memprof.bin
>         > ```
>         >
>         > Closes tarantool/tarantool#5688
>         > ---
>         > Changes in v7:
>         > - Fixed comments as per review by Sergey
>         >
>         > Branch:
>         https://github.com/tarantool/luajit/tree/fckxorg/gh-5688-cli-for-memprof-parse
>         > PR: https://github.com/tarantool/tarantool/pull/8002
>         >
>         > src/luajit.c | 32 +++++++++-
>         > .../gh-5688-memprof-cli-flag.test.lua | 58 +++++++++++++++++++
>         > 2 files changed, 89 insertions(+), 1 deletion(-)
>         > create mode 100644
>         test/tarantool-tests/gh-5688-memprof-cli-flag.test.lua
>         >
>         > diff --git a/src/luajit.c b/src/luajit.c
>         > index 1ca24301..d335f32b 100644
>         > --- a/src/luajit.c
>         > +++ b/src/luajit.c
>         > @@ -72,6 +72,7 @@ static void print_usage(void)
>         > " -O[opt] Control LuaJIT optimizations.\n"
>         > " -i Enter interactive mode after executing "
>         LUA_QL("script") ".\n"
>         > " -v Show version information.\n"
>         > + " -t[cmd] Execute tool.\n"
>
>         According to usage cmd after -t option is optional. However
>         without cmd
>         luajit prints usage
>
>         that hints about incorrect usage:
>
>
>         [0] ~/sources/MRG/tarantool/third_party/luajit$ ./src/luajit -t
>         usage: ./src/luajit [options]... [script [args]...].
>         Available options are:
>            -e chunk  Execute string 'chunk'.
>            -l name   Require library 'name'.
>            -b ...    Save or list bytecode.
>            -j cmd    Perform LuaJIT control command.
>            -O[opt]   Control LuaJIT optimizations.
>            -i        Enter interactive mode after executing 'script'.
>            -v        Show version information.
>            -t[cmd]   Execute tool.
>            -E        Ignore environment variables.
>            --        Stop handling options.
>            -         Execute stdin and stop handling options.
>
>     Fixed! Branch is force-pushed, here is the diff:
>     =========================================================
>     diff --git a/src/luajit.c b/src/luajit.c
>     index d335f32b..c16138f0 100644
>     --- a/src/luajit.c
>     +++ b/src/luajit.c
>     @@ -72,7 +72,7 @@ static void print_usage(void)
>        "  -O[opt]   Control LuaJIT optimizations.\n"
>        "  -i        Enter interactive mode after executing "
>     LUA_QL("script") ".\n"
>        "  -v        Show version information.\n"
>     -  "  -t[cmd]   Execute tool.\n"
>     +  "  -t(cmd)   Execute tool.\n"
>        "  -E        Ignore environment variables.\n"
>        "  --        Stop handling options.\n"
>        "  -         Execute stdin and stop handling options.\n", stderr);
>     =========================================================
>
>
>         <snipped>
>         > +end
>         > +
>         > +generate_output(TMP_BINFILE, default_payload)
>         > +
>         > +local errcode = os.execute(EXECUTABLE .. ' -tinvalid ' ..
>         TMP_BINFILE)
>         > +test:ok(errcode ~= 0, 'invalid tool flag')
>         > +
>         > +errcode = os.execute(EXECUTABLE .. ' -tm ' .. BAD_PATH)
>         > +test:ok(errcode ~= 0, 'binfile does not exist')
>         > +
>         > +errcode = os.execute(EXECUTABLE .. ' -tm ' .. TMP_BINFILE)
>         > +test:ok(errcode == 0, 'memprof binfile parsing')
>         Nit: probably it is worth adding  checks for output.
>         > +
>         > +os.remove(TMP_BINFILE)
>         > +os.exit(test:check() and 0 or 1)
>         > --
>         > 2.39.2 (Apple Git-143)
>         >
>
>     --
>     Best regards,
>     Maxim Kokryashkin
>
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