Initial release of llthreads.
Robert G. Jakabosky
15 years ago
commit
27aae37121
@ -0,0 +1 @@
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build
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@ -0,0 +1,60 @@
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#
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# A simple low-level Lua wrapper for pthreads.
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#
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cmake_minimum_required(VERSION 2.8)
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project(lua-llthreads C)
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set(BUILD_SHARED_LIBS TRUE)
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set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
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set(INSTALL_CMOD share/lua/cmod CACHE PATH "Directory to install Lua binary modules (configure lua via LUA_CPATH)")
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||||
set(LUA_NATIVE_OBJECTS_PATH ../LuaNativeObjects CACHE PATH
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||||
"Directory to LuaNativeObjects bindings generator.")
|
||||
set(USE_PRE_GENERATED_BINDINGS TRUE CACHE BOOL
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||||
"Set this to FALSE to re-generate bindings using LuaNativeObjects")
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||||
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set(COMMON_CFLAGS "${CFLAGS}")
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set(COMMON_LDFLAGS)
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set(COMMON_LIBS)
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## Lua 5.1.x
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include(FindLua51)
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if(NOT ${LUA51_FOUND})
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message(FATAL_ERROR "The FindLua51 module could not find lua :-(")
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endif()
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set(COMMON_LIBS "${COMMON_LIBS};${LUA_LIBRARIES}")
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## find threads
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set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
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include(FindThreads)
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## LuaNativeObjects
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include(LuaNativeObjects)
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include_directories(${CMAKE_CURRENT_SOURCE_DIR}
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${CMAKE_CURRENT_BINARY_DIR}
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${LUA_INCLUDE_DIR})
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## LuaLLTHREADS
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set(LUA_LLTHREADS_SRC
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llthreads.nobj.lua
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)
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if(${USE_PRE_GENERATED_BINDINGS})
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set(LUA_LLTHREADS_SRC src/pre_generated-llthreads.nobj.c)
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else()
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# Generate Lua bindings.
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GenLuaNativeObjects(LUA_LLTHREADS_SRC)
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endif()
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add_library(lua-llthreads MODULE ${LUA_LLTHREADS_SRC})
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target_link_libraries(lua-llthreads ${COMMON_LIBS} ${CMAKE_THREAD_LIBS_INIT})
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set_target_properties(lua-llthreads PROPERTIES PREFIX "")
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set_target_properties(lua-llthreads PROPERTIES COMPILE_FLAGS "${COMMON_CFLAGS}")
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set_target_properties(lua-llthreads PROPERTIES OUTPUT_NAME llthreads)
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install(TARGETS lua-llthreads
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DESTINATION "${INSTALL_CMOD}")
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@ -0,0 +1,6 @@
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About
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=====
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A simple low-level Lua wrapper for pthreads.
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@ -0,0 +1,24 @@
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#
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# Lua Native Objects
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||||
#
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||||
macro(GenLuaNativeObjects _src_files_var)
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set(_new_src_files)
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foreach(_src_file ${${_src_files_var}})
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if(_src_file MATCHES ".nobj.lua")
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string(REGEX REPLACE ".nobj.lua" ".nobj.c" _src_file_out ${_src_file})
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string(REGEX REPLACE ".nobj.lua" ".nobj.h" _header_file_out ${_src_file})
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add_custom_command(OUTPUT ${_src_file_out} ${_header_file_out}
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COMMAND lua ${LUA_NATIVE_OBJECTS_PATH}/native_objects.lua -outpath ${CMAKE_CURRENT_BINARY_DIR} -gen lua ${_src_file}
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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DEPENDS ${_src_file}
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)
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set_source_files_properties(${_src_file_out} PROPERTIES GENERATED TRUE)
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set_source_files_properties(${_header_file_out} PROPERTIES GENERATED TRUE)
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||||
set(_new_src_files ${_new_src_files} ${_src_file_out})
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||||
else(_src_file MATCHES ".nobj.lua")
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||||
set(_new_src_files ${_new_src_files} ${_src_file})
|
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endif(_src_file MATCHES ".nobj.lua")
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||||
endforeach(_src_file)
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||||
set(${_src_files_var} ${_new_src_files})
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||||
endmacro(GenLuaNativeObjects _src_files_var)
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||||
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@ -0,0 +1,39 @@
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-- Copyright (c) 2011 by Robert G. Jakabosky <bobby@sharedrealm.com>
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--
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-- Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
-- of this software and associated documentation files (the "Software"), to deal
|
||||
-- in the Software without restriction, including without limitation the rights
|
||||
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
-- copies of the Software, and to permit persons to whom the Software is
|
||||
-- furnished to do so, subject to the following conditions:
|
||||
--
|
||||
-- The above copyright notice and this permission notice shall be included in
|
||||
-- all copies or substantial portions of the Software.
|
||||
--
|
||||
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
-- THE SOFTWARE.
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c_module "llthreads" {
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-- module settings.
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use_globals = false,
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hide_meta_info = true,
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subfiles {
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"src/thread.nobj.lua",
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},
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||||
|
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c_function "new" {
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var_in{ "const char *", "lua_code" },
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var_out{ "!Lua_LLThread *", "this" },
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c_source[[
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${this} = llthread_create(L, ${lua_code}, ${lua_code_len});
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]],
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},
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}
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@ -0,0 +1,22 @@
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package = "lua-llthreads"
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version = "scm-0"
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source = {
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url = "git://github.com/Neopallium/lua-llthreads.git"
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}
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description = {
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summary = "Low-Level threads for Lua",
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homepage = "http://github.com/Neopallium/lua-llthreads",
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license = "MIT/X11"
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}
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dependencies = {
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"lua >= 5.1"
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}
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build = {
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type = "builtin",
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modules = {
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llthreads = {
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sources = {"src/pre_generated-llthreads.nobj.c"},
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libraries = {"pthread"}
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}
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||||
}
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||||
}
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||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,348 @@
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-- Copyright (c) 2011 by Robert G. Jakabosky <bobby@sharedrealm.com>
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||||
--
|
||||
-- Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
-- of this software and associated documentation files (the "Software"), to deal
|
||||
-- in the Software without restriction, including without limitation the rights
|
||||
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
-- copies of the Software, and to permit persons to whom the Software is
|
||||
-- furnished to do so, subject to the following conditions:
|
||||
--
|
||||
-- The above copyright notice and this permission notice shall be included in
|
||||
-- all copies or substantial portions of the Software.
|
||||
--
|
||||
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
-- THE SOFTWARE.
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||||
|
||||
local Lua_LLThread_type = [[
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||||
typedef enum {
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||||
TSTATE_NONE = 0,
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||||
TSTATE_STARTED = 1<<1,
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||||
TSTATE_DETACHED = 1<<2,
|
||||
TSTATE_JOINED = 1<<3,
|
||||
} Lua_TState;
|
||||
|
||||
typedef struct Lua_LLThread_child {
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||||
lua_State *L;
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||||
int status;
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||||
int is_detached;
|
||||
} Lua_LLThread_child;
|
||||
|
||||
typedef struct Lua_LLThread {
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||||
Lua_LLThread_child *child;
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||||
pthread_t thread;
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||||
Lua_TState state;
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||||
} Lua_LLThread;
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||||
|
||||
]]
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||||
object "Lua_LLThread" {
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||||
sys_include "pthread.h",
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||||
c_source(Lua_LLThread_type),
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||||
c_source[[
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||||
|
||||
#include <stdio.h>
|
||||
|
||||
/******************************************************************************
|
||||
* traceback() function from Lua 5.1.x source.
|
||||
* Copyright (C) 1994-2008 Lua.org, PUC-Rio. All rights reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
******************************************************************************/
|
||||
static int traceback (lua_State *L) {
|
||||
if (!lua_isstring(L, 1)) /* 'message' not a string? */
|
||||
return 1; /* keep it intact */
|
||||
lua_getfield(L, LUA_GLOBALSINDEX, "debug");
|
||||
if (!lua_istable(L, -1)) {
|
||||
lua_pop(L, 1);
|
||||
return 1;
|
||||
}
|
||||
lua_getfield(L, -1, "traceback");
|
||||
if (!lua_isfunction(L, -1)) {
|
||||
lua_pop(L, 2);
|
||||
return 1;
|
||||
}
|
||||
lua_pushvalue(L, 1); /* pass error message */
|
||||
lua_pushinteger(L, 2); /* skip this function and traceback */
|
||||
lua_call(L, 2, 1); /* call debug.traceback */
|
||||
return 1;
|
||||
}
|
||||
|
||||
static Lua_LLThread_child *llthread_child_new() {
|
||||
Lua_LLThread_child *this;
|
||||
|
||||
this = (Lua_LLThread_child *)calloc(1, sizeof(Lua_LLThread_child));
|
||||
/* create new lua_State for the thread. */
|
||||
this->L = luaL_newstate();
|
||||
/* open standard libraries. */
|
||||
luaL_openlibs(this->L);
|
||||
/* push traceback function as first value on stack. */
|
||||
lua_pushcfunction(this->L, traceback);
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
static void llthread_child_destroy(Lua_LLThread_child *this) {
|
||||
lua_close(this->L);
|
||||
free(this);
|
||||
}
|
||||
|
||||
static Lua_LLThread *llthread_new() {
|
||||
Lua_LLThread *this;
|
||||
|
||||
this = (Lua_LLThread *)calloc(1, sizeof(Lua_LLThread));
|
||||
this->state = TSTATE_NONE;
|
||||
this->child = llthread_child_new();
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
static void llthread_destroy(Lua_LLThread *this) {
|
||||
/* We still own the child thread object iff the thread was not started or
|
||||
* we have joined the thread.
|
||||
*/
|
||||
if((this->state & TSTATE_JOINED) == TSTATE_JOINED || this->state == TSTATE_NONE) {
|
||||
if(this->child) llthread_child_destroy(this->child);
|
||||
this->child = NULL;
|
||||
}
|
||||
free(this);
|
||||
}
|
||||
|
||||
static void *run_child_thread(void *arg) {
|
||||
Lua_LLThread_child *this = (Lua_LLThread_child *)arg;
|
||||
lua_State *L = this->L;
|
||||
int nargs = lua_gettop(L) - 2;
|
||||
|
||||
this->status = lua_pcall(L, nargs, LUA_MULTRET, 1);
|
||||
|
||||
if(this->is_detached == 0) {
|
||||
if(this->status != 0) {
|
||||
const char *err_msg = lua_tostring(L, -1);
|
||||
fprintf(stderr, "Error from detached thread: %s\n", err_msg);
|
||||
fflush(stderr);
|
||||
}
|
||||
return this;
|
||||
}
|
||||
/* thread is detached, so it must clean-up the child state. */
|
||||
llthread_child_destroy(this);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int llthread_start(Lua_LLThread *this, int start_detached) {
|
||||
Lua_LLThread_child *child;
|
||||
int rc;
|
||||
|
||||
child = this->child;
|
||||
child->is_detached = start_detached;
|
||||
rc = pthread_create(&(this->thread), NULL, run_child_thread, child);
|
||||
if(rc == 0) {
|
||||
this->state = TSTATE_STARTED;
|
||||
if(start_detached) {
|
||||
this->state |= TSTATE_DETACHED;
|
||||
rc = pthread_detach(this->thread);
|
||||
}
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int llthread_join(Lua_LLThread *this) {
|
||||
Lua_LLThread_child *child;
|
||||
int rc;
|
||||
|
||||
/* then join the thread. */
|
||||
rc = pthread_join(this->thread, (void **)&(child));
|
||||
if(rc == 0) {
|
||||
this->state |= TSTATE_JOINED;
|
||||
/* if the child thread returns NULL, then it freed the child object. */
|
||||
this->child = child;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int llthread_move_values(lua_State *from_L, lua_State *to_L, int idx, int top, int is_arg) {
|
||||
const char *str;
|
||||
size_t str_len;
|
||||
int nvalues = 0;
|
||||
int n;
|
||||
|
||||
for(n = idx; n <= top; n++) {
|
||||
/* only support string/number/boolean/nil/lightuserdata. */
|
||||
switch(lua_type(from_L, n)) {
|
||||
case LUA_TNIL:
|
||||
lua_pushnil(to_L);
|
||||
break;
|
||||
case LUA_TNUMBER:
|
||||
lua_pushnumber(to_L, lua_tonumber(from_L, n));
|
||||
break;
|
||||
case LUA_TBOOLEAN:
|
||||
lua_pushboolean(to_L, lua_toboolean(from_L, n));
|
||||
break;
|
||||
case LUA_TSTRING:
|
||||
str = lua_tolstring(from_L, n, &(str_len));
|
||||
lua_pushlstring(to_L, str, str_len);
|
||||
break;
|
||||
case LUA_TLIGHTUSERDATA:
|
||||
lua_pushlightuserdata(to_L, lua_touserdata(from_L, n));
|
||||
break;
|
||||
case LUA_TTABLE:
|
||||
case LUA_TFUNCTION:
|
||||
case LUA_TUSERDATA:
|
||||
case LUA_TTHREAD:
|
||||
default:
|
||||
if (is_arg) {
|
||||
return luaL_argerror(from_L, n, "table/function/userdata/thread types un-supported.");
|
||||
} else {
|
||||
/* convert un-supported types to an error string. */
|
||||
lua_pushfstring(to_L, "Un-supported value: %s: %p",
|
||||
lua_typename(from_L, lua_type(from_L, n)), lua_topointer(from_L, n));
|
||||
}
|
||||
}
|
||||
++nvalues;
|
||||
}
|
||||
|
||||
return nvalues;
|
||||
}
|
||||
|
||||
static int llthread_push_args(lua_State *L, Lua_LLThread_child *child, int idx, int top) {
|
||||
return llthread_move_values(L, child->L, idx, top, 1 /* is_arg */);
|
||||
}
|
||||
|
||||
static int llthread_push_results(lua_State *L, Lua_LLThread_child *child, int idx, int top) {
|
||||
return llthread_move_values(child->L, L, idx, top, 0 /* is_arg */);
|
||||
}
|
||||
|
||||
static Lua_LLThread *llthread_create(lua_State *L, const char *code, size_t code_len) {
|
||||
Lua_LLThread *this;
|
||||
Lua_LLThread_child *child;
|
||||
const char *str;
|
||||
size_t str_len;
|
||||
int rc;
|
||||
int top;
|
||||
|
||||
this = llthread_new();
|
||||
child = this->child;
|
||||
/* load Lua code into child state. */
|
||||
rc = luaL_loadbuffer(child->L, code, code_len, code);
|
||||
if(rc != 0) {
|
||||
/* copy error message to parent state. */
|
||||
str = lua_tolstring(child->L, -1, &(str_len));
|
||||
if(str != NULL) {
|
||||
lua_pushlstring(L, str, str_len);
|
||||
} else {
|
||||
/* non-string error message. */
|
||||
lua_pushfstring(L, "luaL_loadbuffer() failed to load Lua code: rc=%d", rc);
|
||||
}
|
||||
llthread_destroy(this);
|
||||
lua_error(L);
|
||||
return NULL;
|
||||
}
|
||||
/* copy extra args from main state to child state. */
|
||||
top = lua_gettop(L);
|
||||
/* Push all args after the Lua code. */
|
||||
llthread_push_args(L, child, 2, top);
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
]],
|
||||
destructor {
|
||||
c_source "pre" [[
|
||||
Lua_LLThread_child *child;
|
||||
]],
|
||||
c_source[[
|
||||
/* if the thread has been started and has not been detached/joined. */
|
||||
if((${this}->state & TSTATE_STARTED) == TSTATE_STARTED &&
|
||||
(${this}->state & (TSTATE_DETACHED|TSTATE_JOINED)) == 0) {
|
||||
/* then join the thread. */
|
||||
llthread_join(${this});
|
||||
child = ${this}->child;
|
||||
if(child && child->status != 0) {
|
||||
const char *err_msg = lua_tostring(child->L, -1);
|
||||
fprintf(stderr, "Error from non-joined thread: %s\n", err_msg);
|
||||
fflush(stderr);
|
||||
}
|
||||
}
|
||||
llthread_destroy(${this});
|
||||
]]
|
||||
},
|
||||
method "start" {
|
||||
var_in{ "bool", "start_detached", is_optional = true },
|
||||
var_out{ "bool", "res" },
|
||||
c_source "pre" [[
|
||||
int rc;
|
||||
]],
|
||||
c_source[[
|
||||
if(${this}->state != TSTATE_NONE) {
|
||||
return luaL_error(L, "Thread already started.");
|
||||
}
|
||||
if((rc = llthread_start(${this}, ${start_detached})) != 0) {
|
||||
lua_pushboolean(L, 0); /* false */
|
||||
lua_pushstring(L, strerror(rc));
|
||||
return 2;
|
||||
}
|
||||
${res} = true;
|
||||
]]
|
||||
},
|
||||
method "join" {
|
||||
var_out{ "bool", "res" },
|
||||
var_out{ "const char *", "err_msg" },
|
||||
c_source "pre" [[
|
||||
Lua_LLThread_child *child;
|
||||
int rc;
|
||||
]],
|
||||
c_source[[
|
||||
if((${this}->state & TSTATE_STARTED) == 0) {
|
||||
return luaL_error(L, "Can't join a thread that hasn't be started.");
|
||||
}
|
||||
if((${this}->state & TSTATE_DETACHED) == 1) {
|
||||
return luaL_error(L, "Can't join a thread that has been detached.");
|
||||
}
|
||||
if((${this}->state & TSTATE_JOINED) == 1) {
|
||||
return luaL_error(L, "Can't join a thread that has already been joined.");
|
||||
}
|
||||
/* join the thread. */
|
||||
rc = llthread_join(${this});
|
||||
child = ${this}->child;
|
||||
|
||||
/* Push all results after the Lua code. */
|
||||
if(rc == 0 && child) {
|
||||
if(child->status != 0) {
|
||||
const char *err_msg = lua_tostring(child->L, -1);
|
||||
lua_pushboolean(L, 0);
|
||||
lua_pushfstring(L, "Error from child thread: %s", err_msg);
|
||||
return 2;
|
||||
} else {
|
||||
lua_pushboolean(L, 1);
|
||||
}
|
||||
int top = lua_gettop(child->L);
|
||||
/* return results to parent thread. */
|
||||
llthread_push_results(L, child, 2, top);
|
||||
return top - 1;
|
||||
} else {
|
||||
${res} = false;
|
||||
${err_msg} = strerror(rc);
|
||||
}
|
||||
]]
|
||||
},
|
||||
}
|
||||
|
||||
@ -0,0 +1,38 @@
|
||||
-- Copyright (c) 2011 by Robert G. Jakabosky <bobby@sharedrealm.com>
|
||||
--
|
||||
-- Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
-- of this software and associated documentation files (the "Software"), to deal
|
||||
-- in the Software without restriction, including without limitation the rights
|
||||
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
-- copies of the Software, and to permit persons to whom the Software is
|
||||
-- furnished to do so, subject to the following conditions:
|
||||
--
|
||||
-- The above copyright notice and this permission notice shall be included in
|
||||
-- all copies or substantial portions of the Software.
|
||||
--
|
||||
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
-- THE SOFTWARE.
|
||||
|
||||
local llthreads = require"llthreads"
|
||||
|
||||
local function print_thread(...)
|
||||
return llthreads.new([[ return print("print_thread:", ...) ]], ...)
|
||||
end
|
||||
|
||||
local function pass_through_thread(...)
|
||||
return llthreads.new([[ return "pass_thread:", ... ]], ...)
|
||||
end
|
||||
|
||||
local thread = print_thread("number:", 1234, "nil:", nil, "bool:", true)
|
||||
print(thread:start())
|
||||
print(thread:join())
|
||||
|
||||
local thread = pass_through_thread("number:", 1234, "nil:", nil, "bool:", true)
|
||||
print(thread:start())
|
||||
print("resuls:", thread:join())
|
||||
|
||||
Loading…
Reference in New Issue