ashmem.h - OpenGrok cross reference for /commonlibrary/c

Lines Matching defs:Ashmem
19  * @brief Provides the <b>Ashmem</b> class implemented in c_utils to operate the
20  * Anonymous Shared Memory (Ashmem).
35 class Ashmem;
41 std::shared_ptr<Ashmem> CreateAshmemStd(const char *name, int32_t size);
45  * @brief Creates an <b>Ashmem</b> region in the kernel.
48  * copied and assigned to the <b>Ashmem</b> region in the kernel.
49  * @param size Indicates the size of the <b>Ashmem</b> region to create.
50  * @return Returns the file descriptor of the <b>Ashmem</b> region.
55  * @brief Sets the protection flag of an <b>Ashmem</b> region in the kernel.
57  * @param fd Indicates the file descriptor of an <b>Ashmem</b> region.
65  * @brief Obtains the size of a specific <b>Ashmem</b> region in the kernel.
67  * @param fd Indicates the file descriptor of an <b>Ashmem</b> region.
68  * @return Returns the size of the <b>Ashmem</b> region.
73  * @brief Provides the <b>Ashmem</b> class implemented in c_utils to
74  * operate the Anonymous Shared Memory (Ashmem).
76  * You can use the interfaces in this class to create <b>Ashmem</b> regions
79  * @note <b>Ashmem</b> regions should be unmapped and closed manually,
82 class Ashmem : public virtual RefBase {
85      * @brief Creates an <b>Ashmem</b> region in the kernel.
88      * descriptor will be held by the created <b>Ashmem</b> region.
91 	 * copied and assigned to the <b>Ashmem</b> region in the kernel.
92      * @param size Indicates the size of the <b>Ashmem</b> region.
93      * @return Returns the created <b>Ashmem</b> region referenced by a
98     static sptr<Ashmem> CreateAshmem(const char *name, int32_t size);
101      * @brief Construct a new Ashmem object.
106     Ashmem(int fd, int32_t size);
107     ~Ashmem() override;
112      * @return Corresponding file descriptor of this Ashmem object. It will be
152      * @brief Closes this <b>Ashmem</b> region (through the file descriptor).
156      * @note An <b>Ashmem</b> region will be unmapped by `UnmapAshmem()`
162      * @brief Maps this <b>Ashmem</b> region in the kernel to user space.
171      * @brief Maps this <b>Ashmem</b> region in read/write mode.
180      * @brief Maps this <b>Ashmem</b> region in read-only mode.
189      * @brief Unmaps this <b>Ashmem</b> region.
191      * Unmapping works only when the <b>Ashmem</b> region has been mapped.
197      * @brief Writes data to the `offset` position of this <b>Ashmem</b> region.
204 	 * <b>Ashmem</b> region.
208      * <b>Ashmem</b> region in the kernel and the mapped region in user space.
213      * @brief Reads data from the `offset` position of this <b>Ashmem</b> region.
219 	 * the <b>Ashmem</b> region.
223      * <b>Ashmem</b> region in the kernel and the mapped region in user space.
229     mutable int memoryFd_; // File descriptor of the Ashmem region.
230     mutable int32_t memorySize_; // Size of the Ashmem region.
231     mutable int flag_; // Protection flag of the Ashmem region in user space.
232     mutable void *startAddr_; // Start address of the Ashmem region.
234     int memoryFd_; // File descriptor of the Ashmem region.
235     int32_t memorySize_; // Size of the Ashmem region.
236     int flag_; // Protection flag of the Ashmem region in user space.
237     void *startAddr_; // Start address of the Ashmem region.