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#include "_pch.hpp"
#include "shared.h"
#include "lanes/src/lanes.hpp"
#include <windows.h>
// #################################################################################################
namespace
{
namespace local
{
static int load_lanes_lua(lua_State* const L_)
{
if (0 == luaL_dofile(L_, "lanes.lua")) {
return 1;
} else {
return 0;
}
}
// #########################################################################################
// count the number of live allocations (not the actual byte count, because we can't be sure osize is correct
std::mutex sAllocStatsLock;
size_t sAllocCount = 0;
size_t sAllocBytes = 0;
std::map<void*, size_t> sAllocs;
// #########################################################################################
static void* allocf([[maybe_unused]] void* ud, void* ptr, size_t osize, size_t nsize)
{
std::lock_guard guard{ sAllocStatsLock };
if (!nsize) // free
{
if (ptr) {
--sAllocCount;
sAllocBytes -= osize;
sAllocs.erase(ptr);
free(ptr);
}
return nullptr;
} else if (!ptr) // malloc
{
++sAllocCount;
sAllocBytes += nsize;
void* new_ptr = realloc(ptr, nsize);
if (new_ptr)
sAllocs[new_ptr] = nsize;
return new_ptr;
} else // realloc
{
int64_t delta = static_cast<int64_t>(nsize) - static_cast<int64_t>(osize);
sAllocBytes += static_cast<size_t>(delta);
if (!delta) {
return ptr;
} else {
sAllocs.erase(ptr);
void* new_ptr = realloc(ptr, nsize);
sAllocs[new_ptr] = nsize;
return new_ptr;
}
}
// same as lauxlib l_alloc
//(void)osize;
// if (nsize == 0)
//{
// free(ptr);
// return nullptr;
//}
// else
// return realloc(ptr, nsize);
}
// #########################################################################################
class EmbeddedLuaState : public LuaState
{
private:
HMODULE hCore{ LoadLibraryW(L"lanes_core") };
lua_CFunction lanes_register{};
public:
~EmbeddedLuaState() {
close();
FreeLibrary(hCore);
}
EmbeddedLuaState()
: LuaState { LuaState::WithBaseLibs{ false }, LuaState::WithFixture{ false } }
{
if (!hCore) {
throw std::logic_error("Could not load lanes_core");
}
luaopen_lanes_embedded_t const _p_luaopen_lanes_embedded{ reinterpret_cast<luaopen_lanes_embedded_t>(GetProcAddress(hCore, "luaopen_lanes_embedded")) };
if (!_p_luaopen_lanes_embedded) {
throw std::logic_error("Could not bind luaopen_lanes_embedded");
}
lanes_register = reinterpret_cast<lua_CFunction>(GetProcAddress(hCore, "lanes_register"));
if (!lanes_register) {
throw std::logic_error("Could not bind lanes_register");
}
// need base to make lanes happy
luaL_requiref(L, LUA_GNAME, luaopen_base, 1);
lua_pop(L, 1);
stackCheck(0);
// need package to be able to require lanes
luaL_requiref(L, LUA_LOADLIBNAME, luaopen_package, 1);
lua_pop(L, 1);
stackCheck(0);
// need table to make lanes happy
luaL_requiref(L, LUA_TABLIBNAME, luaopen_table, 1);
lua_pop(L, 1);
stackCheck(0);
// need string to make lanes happy
luaL_requiref(L, LUA_STRLIBNAME, luaopen_string, 1);
lua_pop(L, 1);
stackCheck(0);
_p_luaopen_lanes_embedded(L, local::load_lanes_lua); // S: lanes
lua_pop(L, 1);
stackCheck(0);
}
[[nodiscard]]
auto get_lanes_register() const noexcept { return lanes_register; }
};
} // namespace local
}
// #################################################################################################
TEST_CASE("lanes.embedding.with default allocator")
{
local::EmbeddedLuaState S;
// ---------------------------------------------------------------------------------------------
SECTION("single state")
{
// this sends data in a linda. current contents:
// key: short string
// values:
// bool
// integer
// number
// long string
// table with array and hash parts
// function with an upvalue
std::string_view const _script{
" local lanes = require 'lanes'.configure{with_timers = false}"
" local l = lanes.linda'gleh'"
" local upvalue = 'oeauaoeuoeuaoeuaoeujaoefubycfjbycfybcfjybcfjybcfjbcf'"
" local upvalued = function()"
" return upvalue"
" end"
" local t = setmetatable({ true, true, true, a = true}, {__index = rawget })"
" l:set('yo', true, 10, 100.0, upvalue, t, upvalued)" // put a breakpoint in linda_set to have some data to explore with the NATVIS
" return 'SUCCESS'"
};
S.requireReturnedString(_script, "SUCCESS");
}
// ---------------------------------------------------------------------------------------------
SECTION("manual registration")
{
S.requireSuccess("require 'lanes'.configure{with_timers = false}");
// require 'io' library after Lanes is initialized:
luaL_requiref(S, LUA_IOLIBNAME, luaopen_io, 1);
lua_pop(S, 1);
S.stackCheck(0);
// try to send io.open into a linda, which fails if io base library is not loaded
std::string_view const _script{
" local lanes = require 'lanes'"
" local l = lanes.linda'gleh'"
" l:set('yo', io.open)"
" return 'SUCCESS'"
};
S.requireNotReturnedString(_script, "SUCCESS");
// try again after manual registration
lua_pushcfunction(S, S.get_lanes_register()); // S: lanes_register
luaG_pushstring(S, LUA_IOLIBNAME); // S: lanes_register "io"
luaL_requiref(S, LUA_IOLIBNAME, luaopen_io, 1); // S: lanes_register "io" io
lua_call(S, 2, 0); // S:
S.stackCheck(0);
S.requireReturnedString(_script, "SUCCESS");
}
}
// #################################################################################################
// this is not really a test yet, just something sitting here until it is converted properly
TEST_CASE("lanes.embedding.with custom allocator")
{
static constexpr auto logPrint = +[](lua_State* L) {
lua_getglobal(L, "ID"); // ID
printf("[L%d] %s\n", (int) lua_tointeger(L, 2), lua_tostring(L, 1));
return 0;
};
static constexpr auto on_state_create = +[](lua_State* L) {
lua_pushcfunction(L, logPrint); // logPrint
lua_setglobal(L, "logPrint"); //
return 0;
};
static constexpr auto launch_lane = +[](lua_CFunction on_state_create_, int id_, int n_) {
char script[500];
lua_State* L = lua_newstate(local::allocf, nullptr);
// _G.ID = id_
luaL_openlibs(L);
luaL_dostring(L, "lanes = require 'lanes'");
lua_getglobal(L, "lanes"); // lanes
lua_getfield(L, -1, "configure"); // lanes configure
lua_replace(L, 1); // configure
lua_newtable(L); // configure {}
lua_pushcclosure(L, on_state_create_, 0); // configure {} on_state_create_
lua_setfield(L, -2, "on_state_create"); // configure {on_state_create = on_state_create_}
lua_pushboolean(L, 0); // configure {on_state_create = on_state_create_} false
lua_setfield(L, -2, "with_timers"); // configure {on_state_create = on_state_create_, with_timers = false}
// lua_pushliteral(L, "protected"); // configure {on_state_create = on_state_create_} "protected"
// lua_setfield(L, -2, "allocator"); // configure {on_state_create = on_state_create_, allocater = "protected"}
lua_pcall(L, 1, 0, 0);
sprintf_s(script,
"g = lanes.gen('*', { name = 'auto', globals = {ID = %d} }, function(id_) lane_threadname('Lane %d.'..id_) logPrint('This is L%d.'..id_) end)" // lane generator
"for i = 1,%d do _G['a'..i] = g(i) end" // launch a few lanes, handle stored in global a<i>
,
id_,
id_,
id_,
n_);
luaL_dostring(L, script); // when script ends, globals are collected, lanes are terminated gracefully
return L;
};
local::EmbeddedLuaState S;
// ---------------------------------------------------------------------------------------------
// L1: require 'lanes'.configure{on_state_create = L1_on_state_create, with_timers = false}
lua_State* const L1 = launch_lane(on_state_create, 1, 5);
// L2: require 'lanes'.configure{on_state_create = L2_on_state_create, with_timers = false}
lua_State* const L2 = launch_lane(on_state_create, 2, 5);
// L3: require 'lanes'.configure{on_state_create = L3_on_state_create, with_timers = false}
lua_State* const L3 = launch_lane(on_state_create, 3, 5);
// give some time to the lanes to execute
std::this_thread::sleep_for(1000ms);
lua_close(L3);
lua_close(L2);
lua_close(L1);
}
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