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Diffstat (limited to 'src/libcamera/pipeline/rpi/common/shared_mem_object.h')
-rw-r--r--src/libcamera/pipeline/rpi/common/shared_mem_object.h128
1 files changed, 0 insertions, 128 deletions
diff --git a/src/libcamera/pipeline/rpi/common/shared_mem_object.h b/src/libcamera/pipeline/rpi/common/shared_mem_object.h
deleted file mode 100644
index aa56c220..00000000
--- a/src/libcamera/pipeline/rpi/common/shared_mem_object.h
+++ /dev/null
@@ -1,128 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2023, Raspberry Pi Ltd
- *
- * shared_mem_object.h - Helper class for shared memory allocations
- */
-#pragma once
-
-#include <cstddef>
-#include <fcntl.h>
-#include <string>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <utility>
-
-#include <libcamera/base/class.h>
-#include <libcamera/base/shared_fd.h>
-
-namespace libcamera {
-
-namespace RPi {
-
-template<class T>
-class SharedMemObject
-{
-public:
- static constexpr std::size_t SIZE = sizeof(T);
-
- SharedMemObject()
- : obj_(nullptr)
- {
- }
-
- template<class... Args>
- SharedMemObject(const std::string &name, Args &&...args)
- : name_(name), obj_(nullptr)
- {
- void *mem;
- int ret;
-
- ret = memfd_create(name_.c_str(), MFD_CLOEXEC);
- if (ret < 0)
- return;
-
- fd_ = SharedFD(std::move(ret));
- if (!fd_.isValid())
- return;
-
- ret = ftruncate(fd_.get(), SIZE);
- if (ret < 0)
- return;
-
- mem = mmap(nullptr, SIZE, PROT_READ | PROT_WRITE, MAP_SHARED,
- fd_.get(), 0);
- if (mem == MAP_FAILED)
- return;
-
- obj_ = new (mem) T(std::forward<Args>(args)...);
- }
-
- SharedMemObject(SharedMemObject<T> &&rhs)
- {
- this->name_ = std::move(rhs.name_);
- this->fd_ = std::move(rhs.fd_);
- this->obj_ = rhs.obj_;
- rhs.obj_ = nullptr;
- }
-
- ~SharedMemObject()
- {
- if (obj_) {
- obj_->~T();
- munmap(obj_, SIZE);
- }
- }
-
- /* Make SharedMemObject non-copyable for now. */
- LIBCAMERA_DISABLE_COPY(SharedMemObject)
-
- SharedMemObject<T> &operator=(SharedMemObject<T> &&rhs)
- {
- this->name_ = std::move(rhs.name_);
- this->fd_ = std::move(rhs.fd_);
- this->obj_ = rhs.obj_;
- rhs.obj_ = nullptr;
- return *this;
- }
-
- T *operator->()
- {
- return obj_;
- }
-
- const T *operator->() const
- {
- return obj_;
- }
-
- T &operator*()
- {
- return *obj_;
- }
-
- const T &operator*() const
- {
- return *obj_;
- }
-
- const SharedFD &fd() const
- {
- return fd_;
- }
-
- explicit operator bool() const
- {
- return !!obj_;
- }
-
-private:
- std::string name_;
- SharedFD fd_;
- T *obj_;
-};
-
-} /* namespace RPi */
-
-} /* namespace libcamera */