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#include <iostream>
#include <rigtorp/SPSCQueue.h>
#include <sys/mman.h>
#include <thread>
template <typename T> struct Allocator {
using value_type = T;
struct AllocationResult {
T *ptr;
size_t count;
};
size_t roundup(size_t n) { return (((n - 1) >> 21) + 1) << 21; }
AllocationResult allocate_at_least(size_t n) {
size_t count = roundup(sizeof(T) * n);
auto p = static_cast<T *>(mmap(nullptr, count, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB,
-1, 0));
if (p == MAP_FAILED) {
throw std::bad_alloc();
}
return {p, count / sizeof(T)};
}
void deallocate(T *p, size_t n) { munmap(p, roundup(sizeof(T) * n)); }
};
int main(int argc, char *argv[]) {
(void)argc, (void)argv;
using namespace rigtorp;
SPSCQueue<int, Allocator<int>> q(2);
std::cout << q.capacity() << std::endl;
auto t = std::thread([&] {
while (!q.front())
;
std::cout << *q.front() << std::endl;
q.pop();
});
q.push(1);
t.join();
return 0;
}