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/* SPDX-License-Identifier: MIT */
#include "syncobject.hpp"
#include "priv/ioctl.hpp"
#include <cstdint>
#include <optional>
#include <vector>
#include <unistd.h>
using namespace drm;
SyncObject::SyncObject(int fd, bool signal) : m_fd(fd) {
drm_syncobj_create args{
.flags = signal ? DRM_SYNCOBJ_CREATE_SIGNALED : 0U
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_CREATE, args);
this->m_handle = args.handle;
}
SyncObject::SyncObject(int fd, int syncobj_fd, bool close) : m_fd(fd) {
try {
drm_syncobj_handle args{
.fd = syncobj_fd
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, args);
this->m_handle = args.handle;
} catch (...) {
if (close) {
::close(syncobj_fd);
}
throw;
}
if (close) {
::close(syncobj_fd);
}
}
int SyncObject::exportFd() const {
drm_syncobj_handle args{
.handle = this->m_handle,
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, args);
return args.fd;
}
void SyncObject::importSyncFile(int syncfile_fd, bool close) const {
try {
drm_syncobj_handle args{
.handle = this->m_handle,
.flags = DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE,
.fd = syncfile_fd
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, args);
} catch (...) {
if (close) {
::close(syncfile_fd);
}
throw;
}
if (close) {
::close(syncfile_fd);
}
}
int SyncObject::exportSyncFile() const {
drm_syncobj_handle args{
.handle = this->m_handle,
.flags = DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, args);
return args.fd;
}
void SyncObject::signal(int fd, const std::vector<uint32_t>& objects) {
if (objects.empty()) {
return;
}
drm_syncobj_array args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.count_handles = static_cast<uint32_t>(objects.size())
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_SIGNAL, args);
}
void SyncObject::reset(int fd, const std::vector<uint32_t>& objects) {
if (objects.empty()) {
return;
}
drm_syncobj_array args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.count_handles = static_cast<uint32_t>(objects.size())
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_RESET, args);
}
uint32_t SyncObject::wait(
int fd,
const std::vector<uint32_t>& objects,
int64_t timeout,
bool waitAll,
bool waitEmpty,
bool waitAvailable,
std::optional<uint64_t> deadlineHint
) {
if (objects.empty()) {
return 0;
}
if (waitAvailable) {
waitEmpty = false;
}
drm_syncobj_wait args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.timeout_nsec = timeout,
.count_handles = static_cast<uint32_t>(objects.size()),
.flags =
(waitAll ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL : 0U) |
(waitEmpty ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT : 0U) |
(waitAvailable ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE : 0U) |
(deadlineHint.has_value() ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_DEADLINE : 0U),
.deadline_nsec = deadlineHint.value_or(0)
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_WAIT, args);
return args.first_signaled;
}
void SyncObject::destruct() noexcept {
if (this->m_fd < 0) {
return;
}
drm_syncobj_destroy args{
.handle = this->m_handle
};
try {
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_DESTROY, args);
} catch(...) {
(void) 0; // not much we can do about the leak
}
this->m_fd = -1;
}
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