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Update multihashing.cc #7

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71b52b3
Update multihashing.cc
gig-tmb Jun 14, 2018
0abd80f
Update multihashing.cc
gig-tmb Jun 14, 2018
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46 changes: 25 additions & 21 deletions multihashing.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,14 @@ extern "C" {
#include "cryptonight_light.h"
}

static struct cryptonight_ctx* ctx = NULL;

void init_ctx() {
if (ctx) return;
ctx = static_cast<cryptonight_ctx *>(_mm_malloc(sizeof(cryptonight_ctx), 16));
ctx->memory = static_cast<uint8_t *>(_mm_malloc(xmrig::CRYPTONIGHT_HEAVY_MEMORY, 4096));
}

#define THROW_ERROR_EXCEPTION(x) Nan::ThrowError(x)

void callback(char* data, void* hint) {
Expand Down Expand Up @@ -138,39 +146,35 @@ NAN_METHOD(CNLAsync) {

NAN_METHOD(cryptonight_light) {

bool fast = false;
if (info.Length() < 1) return THROW_ERROR_EXCEPTION("You must provide one argument.");

Local<Object> target = info[0]->ToObject();

if (info.Length() < 1)
return THROW_ERROR_EXCEPTION("You must provide one argument.");
if(!Buffer::HasInstance(target)) return THROW_ERROR_EXCEPTION("Argument should be a buffer object.");

int variant = 0;

if (info.Length() >= 2) {
if(!info[1]->IsBoolean())
return THROW_ERROR_EXCEPTION("Argument 2 should be a boolean");
fast = info[1]->ToBoolean()->BooleanValue();
if (!info[1]->IsNumber()) return THROW_ERROR_EXCEPTION("Argument 2 should be a number");
variant = Nan::To<int>(info[1]).FromMaybe(0);
}

Local<Object> target = info[0]->ToObject();

if(!Buffer::HasInstance(target))
return THROW_ERROR_EXCEPTION("Argument should be a buffer object.");

char * input = Buffer::Data(target);

char output[32];

uint32_t input_len = Buffer::Length(target);

if(fast)
cryptonight_light_fast_hash(input, output, input_len);
else
cryptonight_light_hash(input, output, input_len);
init_ctx();
switch (variant) {
case 0: cryptonight_single_hash<AEON_ITER, AEON_MEMORY, AEON_MASK, false, 0>(reinterpret_cast<const uint8_t*>(Buffer::Data(target)), Buffer::Length(target), reinterpret_cast<uint8_t*>(output), ctx);
break;
case 1: cryptonight_single_hash<AEON_ITER, AEON_MEMORY, AEON_MASK, false, 1>(reinterpret_cast<const uint8_t*>(Buffer::Data(target)), Buffer::Length(target), reinterpret_cast<uint8_t*>(output), ctx);
break;
default: return THROW_ERROR_EXCEPTION("Unknown PoW variant");
}

v8::Local<v8::Value> returnValue = Nan::CopyBuffer(output, 32).ToLocalChecked();
info.GetReturnValue().Set(
returnValue
);
}


NAN_MODULE_INIT(init) {
Nan::Set(target, Nan::New("cryptonight").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(cryptonight)).ToLocalChecked());
Nan::Set(target, Nan::New("CNAsync").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(CNAsync)).ToLocalChecked());
Expand Down