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Merge pull request #60 from wheremyfoodat/time

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Make 3DS clock return system time and not UTC time
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wheremyfoodat 2023-07-02 01:31:18 +03:00 • committed by GitHub
commit 47668b6a7b
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1 changed files with 17 additions and 5 deletions
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22
src/core/memory.cpp
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@ -3,6 +3,7 @@
#include "resource_limits.hpp"
#include <cassert>
#include <chrono> // For time since epoch
#include <ctime>
using namespace KernelMemoryTypes;
@ -424,9 +425,20 @@ void Memory::mirrorMapping(u32 destAddress, u32 sourceAddress, u32 size) {
u64 Memory::timeSince3DSEpoch() {
using namespace std::chrono;
// ms since Jan 1 1970
milliseconds ms = duration_cast<milliseconds>(system_clock::now().time_since_epoch());
// ms between Jan 1 1900 and Jan 1 1970 (2208988800 seconds elapsed between the two)
constexpr u64 offset = 2208988800ull * 1000;
return ms.count() + offset;
std::time_t rawTime = std::time(nullptr); // Get current UTC time
auto localTime = std::localtime(&rawTime); // Convert to local time
bool daylightSavings = localTime->tm_isdst > 0; // Get if time includes DST
localTime = std::gmtime(&rawTime);
// Use gmtime + mktime to calculate difference between local time and UTC
auto timezoneDifference = rawTime - std::mktime(localTime);
if (daylightSavings) {
timezoneDifference += 60ull * 60ull; // Add 1 hour (60 seconds * 60 minutes)
}
// seconds between Jan 1 1900 and Jan 1 1970
constexpr u64 offset = 2208988800ull;
milliseconds ms = duration_cast<milliseconds>(seconds(rawTime + timezoneDifference + offset));
return ms.count();
}