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utils.c
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236 lines (216 loc) · 4.56 KB
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#include "general.h"
#include "utils.h"
#ifdef WIN32
# include <time.h>
#else
# include <sys/time.h>
#endif
#ifdef _OPENMP
#include <omp.h>
#endif
THLongStorage* torch_checklongargs(lua_State *L, int index)
{
THLongStorage *storage;
int i;
int narg = lua_gettop(L)-index+1;
if(narg == 1 && luaT_toudata(L, index, "torch.LongStorage"))
{
THLongStorage *storagesrc = luaT_toudata(L, index, "torch.LongStorage");
storage = THLongStorage_newWithSize(storagesrc->size);
THLongStorage_copy(storage, storagesrc);
}
else
{
storage = THLongStorage_newWithSize(narg);
for(i = index; i < index+narg; i++)
{
if(!lua_isnumber(L, i))
{
THLongStorage_free(storage);
luaL_argerror(L, i, "number expected");
}
THLongStorage_set(storage, i-index, lua_tonumber(L, i));
}
}
return storage;
}
int torch_islongargs(lua_State *L, int index)
{
int narg = lua_gettop(L)-index+1;
if(narg == 1 && luaT_toudata(L, index, "torch.LongStorage"))
{
return 1;
}
else
{
int i;
for(i = index; i < index+narg; i++)
{
if(!lua_isnumber(L, i))
return 0;
}
return 1;
}
return 0;
}
static int torch_isatty(lua_State *L)
{
#ifdef _WIN32
lua_pushboolean(L, 0);
#else
FILE **fp = (FILE **) luaL_checkudata(L, -1, LUA_FILEHANDLE);
lua_pushboolean(L, isatty(fileno(*fp)));
#endif
return 1;
}
static double real_time()
{
#ifdef _WIN32
time_t ltime;
time(<ime);
return (double)(ltime);
#else
struct timeval current;
gettimeofday(¤t, NULL);
return (current.tv_sec + current.tv_usec/1000000.0);
#endif
}
static int torch_lua_tic(lua_State* L)
{
double ttime = real_time();
lua_pushnumber(L,ttime);
return 1;
}
static int torch_lua_toc(lua_State* L)
{
double toctime = real_time();
lua_Number tictime = luaL_checknumber(L,1);
lua_pushnumber(L,toctime-tictime);
return 1;
}
static int torch_lua_getdefaulttensortype(lua_State *L)
{
const char* tname = torch_getdefaulttensortype(L);
if(tname)
{
lua_pushstring(L, tname);
return 1;
}
return 0;
}
const char* torch_getdefaulttensortype(lua_State *L)
{
lua_getglobal(L, "torch");
if(lua_istable(L, -1))
{
lua_getfield(L, -1, "Tensor");
if(lua_istable(L, -1))
{
if(lua_getmetatable(L, -1))
{
lua_pushstring(L, "__index");
lua_rawget(L, -2);
if(lua_istable(L, -1))
{
lua_rawget(L, LUA_REGISTRYINDEX);
if(lua_isstring(L, -1))
{
const char *tname = lua_tostring(L, -1);
lua_pop(L, 4);
return tname;
}
}
else
{
lua_pop(L, 4);
return NULL;
}
}
else
{
lua_pop(L, 2);
return NULL;
}
}
else
{
lua_pop(L, 2);
return NULL;
}
}
else
{
lua_pop(L, 1);
return NULL;
}
return NULL;
}
static int torch_getnumthreads(lua_State *L)
{
#ifdef _OPENMP
lua_pushinteger(L, omp_get_max_threads());
#else
lua_pushinteger(L, 1);
#endif
return 1;
}
static int torch_setnumthreads(lua_State *L)
{
#ifdef _OPENMP
int nth = luaL_checkint(L,1);
omp_set_num_threads(nth);
#endif
return 0;
}
static int torch_getnumcores(lua_State *L)
{
#ifdef _OPENMP
lua_pushinteger(L, omp_get_num_procs());
#else
lua_pushinteger(L, 1);
#endif
return 1;
}
static void luaTorchGCFunction(void *data)
{
lua_State *L = data;
lua_gc(L, LUA_GCCOLLECT, 0);
}
static int torch_setheaptracking(lua_State *L)
{
int enabled = luaT_checkboolean(L,1);
if(enabled) {
THSetGCHandler(luaTorchGCFunction, L);
} else {
THSetGCHandler(NULL, NULL);
}
return 0;
}
static const struct luaL_Reg torch_utils__ [] = {
{"getdefaulttensortype", torch_lua_getdefaulttensortype},
{"isatty", torch_isatty},
{"tic", torch_lua_tic},
{"toc", torch_lua_toc},
{"setnumthreads", torch_setnumthreads},
{"getnumthreads", torch_getnumthreads},
{"getnumcores", torch_getnumcores},
{"factory", luaT_lua_factory},
{"getconstructortable", luaT_lua_getconstructortable},
{"typename", luaT_lua_typename},
{"isequal", luaT_lua_isequal},
{"getenv", luaT_lua_getenv},
{"setenv", luaT_lua_setenv},
{"newmetatable", luaT_lua_newmetatable},
{"setmetatable", luaT_lua_setmetatable},
{"getmetatable", luaT_lua_getmetatable},
{"metatype", luaT_lua_metatype},
{"pushudata", luaT_lua_pushudata},
{"version", luaT_lua_version},
{"pointer", luaT_lua_pointer},
{"setheaptracking", torch_setheaptracking},
{NULL, NULL}
};
void torch_utils_init(lua_State *L)
{
luaT_setfuncs(L, torch_utils__, 0);
}