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#include "general.h"
#ifdef _WIN32
#include <windows.h>
#include <assert.h>
#define TimeType __int64
static __declspec( thread ) TimeType ticksPerSecond = 0;
/*
* There is an example of getrusage for windows in following link:
* https://github.com/openvswitch/ovs/blob/master/lib/getrusage-windows.c
*/
#else
#include <sys/time.h>
#include <sys/resource.h>
#define TimeType double
#endif
typedef struct _Timer
{
int isRunning;
TimeType totalrealtime;
TimeType totalusertime;
TimeType totalsystime;
TimeType startrealtime;
TimeType startusertime;
TimeType startsystime;
} Timer;
static TimeType torch_Timer_realtime()
{
#ifdef _WIN32
TimeType current;
QueryPerformanceCounter(¤t);
return current;
#else
struct timeval current;
gettimeofday(¤t, NULL);
return (current.tv_sec + current.tv_usec/1000000.0);
#endif
}
static TimeType torch_Timer_usertime()
{
#ifdef _WIN32
return torch_Timer_realtime();
#else
struct rusage current;
getrusage(RUSAGE_SELF, ¤t);
return (current.ru_utime.tv_sec + current.ru_utime.tv_usec/1000000.0);
#endif
}
static TimeType torch_Timer_systime()
{
#ifdef _WIN32
return 0;
#else
struct rusage current;
getrusage(RUSAGE_SELF, ¤t);
return (current.ru_stime.tv_sec + current.ru_stime.tv_usec/1000000.0);
#endif
}
static int torch_Timer_new(lua_State *L)
{
#ifdef _WIN32
if (ticksPerSecond == 0)
{
assert(sizeof(LARGE_INTEGER) == sizeof(__int64));
QueryPerformanceFrequency(&ticksPerSecond);
}
#endif
Timer *timer = luaT_alloc(L, sizeof(Timer));
timer->isRunning = 1;
timer->totalrealtime = 0;
timer->totalusertime = 0;
timer->totalsystime = 0;
timer->startrealtime = torch_Timer_realtime();
timer->startusertime = torch_Timer_usertime();
timer->startsystime = torch_Timer_systime();
luaT_pushudata(L, timer, "torch.Timer");
return 1;
}
static int torch_Timer_reset(lua_State *L)
{
Timer *timer = luaT_checkudata(L, 1, "torch.Timer");
timer->totalrealtime = 0;
timer->totalusertime = 0;
timer->totalsystime = 0;
timer->startrealtime = torch_Timer_realtime();
timer->startusertime = torch_Timer_usertime();
timer->startsystime = torch_Timer_systime();
lua_settop(L, 1);
return 1;
}
static int torch_Timer_free(lua_State *L)
{
Timer *timer = luaT_checkudata(L, 1, "torch.Timer");
luaT_free(L, timer);
return 0;
}
static int torch_Timer_stop(lua_State *L)
{
Timer *timer = luaT_checkudata(L, 1, "torch.Timer");
if(timer->isRunning)
{
TimeType realtime = torch_Timer_realtime() - timer->startrealtime;
TimeType usertime = torch_Timer_usertime() - timer->startusertime;
TimeType systime = torch_Timer_systime() - timer->startsystime;
timer->totalrealtime += realtime;
timer->totalusertime += usertime;
timer->totalsystime += systime;
timer->isRunning = 0;
}
lua_settop(L, 1);
return 1;
}
static int torch_Timer_resume(lua_State *L)
{
Timer *timer = luaT_checkudata(L, 1, "torch.Timer");
if(!timer->isRunning)
{
timer->isRunning = 1;
timer->startrealtime = torch_Timer_realtime();
timer->startusertime = torch_Timer_usertime();
timer->startsystime = torch_Timer_systime();
}
lua_settop(L, 1);
return 1;
}
static int torch_Timer_time(lua_State *L)
{
Timer *timer = luaT_checkudata(L, 1, "torch.Timer");
double realtime = (timer->isRunning ? (timer->totalrealtime + torch_Timer_realtime() - timer->startrealtime) : timer->totalrealtime);
double usertime = (timer->isRunning ? (timer->totalusertime + torch_Timer_usertime() - timer->startusertime) : timer->totalusertime);
double systime = (timer->isRunning ? (timer->totalsystime + torch_Timer_systime() - timer->startsystime) : timer->totalsystime);
#ifdef _WIN32
realtime /= ticksPerSecond;
usertime /= ticksPerSecond;
systime /= ticksPerSecond;
#endif
lua_createtable(L, 0, 3);
lua_pushnumber(L, realtime);
lua_setfield(L, -2, "real");
lua_pushnumber(L, usertime);
lua_setfield(L, -2, "user");
lua_pushnumber(L, systime);
lua_setfield(L, -2, "sys");
return 1;
}
static int torch_Timer___tostring__(lua_State *L)
{
Timer *timer = luaT_checkudata(L, 1, "torch.Timer");
lua_pushfstring(L, "torch.Timer [status: %s]", (timer->isRunning ? "running" : "stopped"));
return 1;
}
static const struct luaL_Reg torch_Timer__ [] = {
{"reset", torch_Timer_reset},
{"stop", torch_Timer_stop},
{"resume", torch_Timer_resume},
{"time", torch_Timer_time},
{"__tostring__", torch_Timer___tostring__},
{NULL, NULL}
};
void torch_Timer_init(lua_State *L)
{
luaT_newmetatable(L, "torch.Timer", NULL, torch_Timer_new, torch_Timer_free, NULL);
luaT_setfuncs(L, torch_Timer__, 0);
lua_pop(L, 1);
}
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