[Tarantool-patches] [PATCH luajit v2 0/7] LuaJIT memory profiler

[Sergey Kaplun]

This patch provides a Lua interface for memory profiler in LuaJIT
and the corresponding parser of profiled data.

Global changes in v2:
  - Moved symtab to memprof module.
  - Added LUA_CORE and `module_name`_c defines
  - Added LJ_FASTCALL in wbuf and leb128 modules.
  - Added translation units to amalg build.
  - Code style fixes and commit message fixes.
  - Added (gh-5490) to ChangeLog.

Issues: https://github.com/tarantool/tarantool/issues/5442
        https://github.com/tarantool/tarantool/issues/5490

Branch: https://github.com/tarantool/luajit/tree/skaplun/gh-5442-luajit-memory-profiler

CI:     https://gitlab.com/tarantool/tarantool/-/pipelines/234430645

RFC: https://lists.tarantool.org/pipermail/tarantool-discussions/2020-December/000147.html

@ChangeLog:
 - Introduce LuaJIT memory profiler (gh-5442).
 - Introduce LuaJIT memory profiler parser (gh-5490).

Sergey Kaplun (7):
  utils: introduce leb128 reader and writer
  core: introduce write buffer module
  vm: introduce VM states for Lua and fast functions
  core: introduce new mem_L field
  core: introduce memory profiler
  misc: add Lua API for memory profiler
  tools: introduce a memory profile parser

 Makefile                           |  39 ++-
 src/Makefile                       |  13 +-
 src/Makefile.dep                   |  44 +--
 src/lib_misc.c                     | 167 +++++++++++
 src/lj_arch.h                      |  22 ++
 src/lj_debug.c                     |   8 +-
 src/lj_debug.h                     |   3 +
 src/lj_errmsg.h                    |   6 +
 src/lj_frame.h                     |  18 +-
 src/lj_gc.c                        |   2 +
 src/lj_memprof.c                   | 430 +++++++++++++++++++++++++++++
 src/lj_memprof.h                   | 165 +++++++++++
 src/lj_obj.h                       |  13 +-
 src/lj_profile.c                   |   5 +-
 src/lj_state.c                     |   8 +
 src/lj_utils.h                     |  58 ++++
 src/lj_utils_leb128.c              | 132 +++++++++
 src/lj_wbuf.c                      | 141 ++++++++++
 src/lj_wbuf.h                      |  87 ++++++
 src/ljamalg.c                      |   3 +
 src/luajit-gdb.py                  |  14 +-
 src/vm_arm.dasc                    |   6 +-
 src/vm_arm64.dasc                  |   6 +-
 src/vm_mips.dasc                   |   6 +-
 src/vm_mips64.dasc                 |   6 +-
 src/vm_ppc.dasc                    |   6 +-
 src/vm_x64.dasc                    |  93 +++++--
 src/vm_x86.dasc                    | 131 ++++++---
 test/misclib-memprof-lapi.test.lua | 135 +++++++++
 tools/luajit-parse-memprof         |   9 +
 tools/memprof.lua                  | 109 ++++++++
 tools/memprof/humanize.lua         |  45 +++
 tools/memprof/parse.lua            | 188 +++++++++++++
 tools/utils/bufread.lua            | 147 ++++++++++
 tools/utils/symtab.lua             |  89 ++++++
 35 files changed, 2217 insertions(+), 137 deletions(-)
 create mode 100644 src/lj_memprof.c
 create mode 100644 src/lj_memprof.h
 create mode 100644 src/lj_utils.h
 create mode 100644 src/lj_utils_leb128.c
 create mode 100644 src/lj_wbuf.c
 create mode 100644 src/lj_wbuf.h
 create mode 100755 test/misclib-memprof-lapi.test.lua
 create mode 100755 tools/luajit-parse-memprof
 create mode 100644 tools/memprof.lua
 create mode 100644 tools/memprof/humanize.lua
 create mode 100644 tools/memprof/parse.lua
 create mode 100644 tools/utils/bufread.lua
 create mode 100644 tools/utils/symtab.lua

-- 
2.28.0