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#include "SharedBuffer.h"
#include <cerrno>
#include <cstdio>
#include <cstring>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
SharedFB::SharedFB(const char* path) : fd(shm_open(path, O_RDWR, 0755)) {
if (fd == -1) {
fd = shm_open(path, O_RDWR | O_CREAT, 0755);
}
if (fd < 0) {
perror("Can't open shm");
return;
}
ftruncate(fd, fb_size);
mem = (uint16_t*)mmap(nullptr, fb_size, PROT_WRITE, MAP_SHARED, fd, 0);
}
SharedFB::~SharedFB() {
if (mem != nullptr) {
munmap(mem, fb_size);
}
}
SharedFB::SharedFB(SharedFB&& other) noexcept : fd(other.fd), mem(other.mem) {
other.fd = -1;
other.mem = nullptr;
}
SharedFB&
SharedFB::operator=(SharedFB&& other) noexcept {
// TODO: release
this->fd = other.fd;
this->mem = other.mem;
other.fd = -1;
other.mem = nullptr;
return *this;
}
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