#include <time.h>

#include "timestamp.h"

// 1  s = 1000 ms
// 1 ms = 1000 us
// 1 us = 1000 ns

struct timestamp
{
    struct timespec ts;
    uint64_t ts_in_msec;
    uint64_t ts_in_sec;
} g_timestamp;

#define ATOMIC_SET(x, y) __atomic_store_n(x, y, __ATOMIC_RELAXED)
#define ATOMIC_READ(x) __atomic_load_n(x, __ATOMIC_RELAXED)

void timestamp_update()
{
    clock_gettime(CLOCK_MONOTONIC, &g_timestamp.ts);

    uint64_t current_timestamp_ms = g_timestamp.ts.tv_sec * 1000 + g_timestamp.ts.tv_nsec / 1000000;
    uint64_t current_timestamp_sec = g_timestamp.ts.tv_sec + g_timestamp.ts.tv_nsec / 1000000000;

    ATOMIC_SET(&g_timestamp.ts_in_msec, current_timestamp_ms);
    ATOMIC_SET(&g_timestamp.ts_in_sec, current_timestamp_sec);
}

uint64_t timestamp_get_sec()
{
    return ATOMIC_READ(&g_timestamp.ts_in_sec);
}

uint64_t timestamp_get_msec()
{
    return ATOMIC_READ(&g_timestamp.ts_in_msec);
}