| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_DEVICES_BIN_DRIVER_MANAGER_VMO_WRITER_H_ |
| #define SRC_DEVICES_BIN_DRIVER_MANAGER_VMO_WRITER_H_ |
| |
| #include <lib/zx/vmo.h> |
| |
| #include <utility> |
| |
| // Wraps a vmo to aid in writing text into it. |
| class VmoWriter { |
| public: |
| explicit VmoWriter(zx::vmo vmo) : vmo_(std::move(vmo)) { status_ = vmo_.get_size(&size_); } |
| |
| // printf into the vmo. |
| void Printf(const char* fmt, ...) __PRINTFLIKE(2, 3); |
| |
| size_t written() const { return written_; } |
| size_t available() const { return written_; } |
| const zx::vmo& vmo() const { return vmo_; } |
| zx_status_t status() const { return status_; } |
| |
| private: |
| zx::vmo vmo_; |
| size_t size_ = 0; |
| zx_status_t status_ = ZX_OK; |
| size_t written_ = 0; |
| size_t available_ = 0; |
| }; |
| |
| #endif // SRC_DEVICES_BIN_DRIVER_MANAGER_VMO_WRITER_H_ |