[Tarantool-discussions] [PATCH] build: embed LuaJIT memory profiler tools

[Sergey Kaplun]

This patch embeds a parser for binary data dumped via the memory
profiler to Tarantool binary.

It is a set of the following Lua modules:
* utils/bufread.lua: read binary data from a file.
* utils/symtab.lua: symbol table decode functions
* memprof/parse.lua: decode the memory profiler event stream
* memprof/humanize.lua: display decoded data in human readable format
* memprof.lua: Lua script and module to display data

It launch with the following command:
$ tarantool -e 'require("memprof")(arg[1])' - filename.bin

Closed #5490
---

Issue: https://github.com/tarantool/tarantool/issues/5490
Branch: https://github.com/tarantool/tarantool/tree/skaplun/gh-5442-luajit-memory-profiler
CI: https://gitlab.com/tarantool/tarantool/-/commits/skaplun/gh-5442-luajit-memory-profiler

 src/CMakeLists.txt |  6 ++++++
 src/lua/init.c     | 15 ++++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b95688c1a..9a712bc29 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -61,6 +61,12 @@ lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/src/jit/vmdef.lua
 lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/src/jit/v.lua")
 lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/src/jit/p.lua")
 lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/src/jit/zone.lua")
+# LuaJIT tools.* library
+lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/tools/memprof.lua")
+lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/tools/memprof/humanize.lua")
+lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/tools/memprof/parse.lua")
+lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/tools/utils/bufread.lua")
+lua_source(lua_sources "${CMAKE_BINARY_DIR}/third_party/luajit/tools/utils/symtab.lua")
 
 add_custom_target(generate_lua_sources
     WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/src/box
diff --git a/src/lua/init.c b/src/lua/init.c
index a0b2fc775..82075c595 100644
--- a/src/lua/init.c
+++ b/src/lua/init.c
@@ -121,7 +121,14 @@ extern char strict_lua[],
 	string_lua[],
 	swim_lua[],
 	p_lua[], /* LuaJIT 2.1 profiler */
-	zone_lua[] /* LuaJIT 2.1 profiler */;
+	zone_lua[], /* LuaJIT 2.1 profiler */
+	/* tools.* libraries. */
+	bufread_lua[],
+	symtab_lua[],
+	parse_lua[],
+	humanize_lua[],
+	memprof_lua[]
+;
 
 static const char *lua_modules[] = {
 	/* Make it first to affect load of all other modules */
@@ -167,6 +174,12 @@ static const char *lua_modules[] = {
 	/* Profiler */
 	"jit.p", p_lua,
 	"jit.zone", zone_lua,
+	/* tools.* libraries. Order is important. */
+	"utils.bufread", bufread_lua,
+	"utils.symtab", symtab_lua,
+	"memprof.parse", parse_lua,
+	"memprof.humanize", humanize_lua,
+	"memprof", memprof_lua,
 	NULL
 };
 
-- 
2.28.0