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Async environment for mods to do concurrent tasks (#11131)

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This commit is contained in:
sfan5 2022-05-02 20:55:04 +02:00
parent 663c936428
commit e7659883cc
38 changed files with 1646 additions and 48 deletions
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67
src/script/scripting_server.cpp
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@ -47,11 +47,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "lua_api/l_storage.h"
extern "C" {
#include "lualib.h"
#include <lualib.h>
}
ServerScripting::ServerScripting(Server* server):
ScriptApiBase(ScriptingType::Server)
ScriptApiBase(ScriptingType::Server),
asyncEngine(server)
{
setGameDef(server);
@ -88,6 +89,47 @@ ServerScripting::ServerScripting(Server* server):
infostream << "SCRIPTAPI: Initialized game modules" << std::endl;
}
void ServerScripting::initAsync()
{
// Save globals to transfer
{
lua_State *L = getStack();
lua_getglobal(L, "core");
luaL_checktype(L, -1, LUA_TTABLE);
lua_getfield(L, -1, "get_globals_to_transfer");
lua_call(L, 0, 1);
luaL_checktype(L, -1, LUA_TSTRING);
getServer()->m_async_globals_data.set(readParam<std::string>(L, -1));
lua_pushnil(L);
lua_setfield(L, -3, "get_globals_to_transfer"); // unset function too
lua_pop(L, 2); // pop 'core', return value
}
infostream << "SCRIPTAPI: Initializing async engine" << std::endl;
asyncEngine.registerStateInitializer(InitializeAsync);
asyncEngine.registerStateInitializer(ModApiUtil::InitializeAsync);
asyncEngine.registerStateInitializer(ModApiCraft::InitializeAsync);
asyncEngine.registerStateInitializer(ModApiItemMod::InitializeAsync);
asyncEngine.registerStateInitializer(ModApiServer::InitializeAsync);
// not added: ModApiMapgen is a minefield for thread safety
// not added: ModApiHttp async api can't really work together with our jobs
// not added: ModApiStorage is probably not thread safe(?)
asyncEngine.initialize(0);
}
void ServerScripting::stepAsync()
{
asyncEngine.step(getStack());
}
u32 ServerScripting::queueAsync(std::string &&serialized_func,
PackedValue *param, const std::string &mod_origin)
{
return asyncEngine.queueAsyncJob(std::move(serialized_func),
param, mod_origin);
}
void ServerScripting::InitializeModApi(lua_State *L, int top)
{
// Register reference classes (userdata)
@ -125,3 +167,24 @@ void ServerScripting::InitializeModApi(lua_State *L, int top)
ModApiStorage::Initialize(L, top);
ModApiChannels::Initialize(L, top);
}
void ServerScripting::InitializeAsync(lua_State *L, int top)
{
// classes
LuaItemStack::Register(L);
LuaPerlinNoise::Register(L);
LuaPerlinNoiseMap::Register(L);
LuaPseudoRandom::Register(L);
LuaPcgRandom::Register(L);
LuaSecureRandom::Register(L);
LuaVoxelManip::Register(L);
LuaSettings::Register(L);
// globals data
lua_getglobal(L, "core");
luaL_checktype(L, -1, LUA_TTABLE);
std::string s = ModApiBase::getServer(L)->m_async_globals_data.get();
lua_pushlstring(L, s.c_str(), s.size());
lua_setfield(L, -2, "transferred_globals");
lua_pop(L, 1); // pop 'core'
}