Nicolas Borla / Mbed OS BBR_1Ebene

BBR 1 Ebene

mbed-os/features/filesystem/bd/ProfilingBlockDevice.h@0:fbdae7e6d805, 2018-05-14 (annotated)

Committer:
borlanic
Date:
Mon May 14 11:29:06 2018 +0000
Revision:
0:fbdae7e6d805
BBR

Who changed what in which revision?

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borlanic 0:fbdae7e6d805 1 /* mbed Microcontroller Library
borlanic 0:fbdae7e6d805 2 * Copyright (c) 2017 ARM Limited
borlanic 0:fbdae7e6d805 3 *
borlanic 0:fbdae7e6d805 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
borlanic 0:fbdae7e6d805 5 * of this software and associated documentation files (the "Software"), to deal
borlanic 0:fbdae7e6d805 6 * in the Software without restriction, including without limitation the rights
borlanic 0:fbdae7e6d805 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
borlanic 0:fbdae7e6d805 8 * copies of the Software, and to permit persons to whom the Software is
borlanic 0:fbdae7e6d805 9 * furnished to do so, subject to the following conditions:
borlanic 0:fbdae7e6d805 10 *
borlanic 0:fbdae7e6d805 11 * The above copyright notice and this permission notice shall be included in
borlanic 0:fbdae7e6d805 12 * all copies or substantial portions of the Software.
borlanic 0:fbdae7e6d805 13 *
borlanic 0:fbdae7e6d805 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
borlanic 0:fbdae7e6d805 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
borlanic 0:fbdae7e6d805 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
borlanic 0:fbdae7e6d805 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
borlanic 0:fbdae7e6d805 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
borlanic 0:fbdae7e6d805 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
borlanic 0:fbdae7e6d805 20 * SOFTWARE.
borlanic 0:fbdae7e6d805 21 */
borlanic 0:fbdae7e6d805 22 #ifndef MBED_PROFILING_BLOCK_DEVICE_H
borlanic 0:fbdae7e6d805 23 #define MBED_PROFILING_BLOCK_DEVICE_H
borlanic 0:fbdae7e6d805 24
borlanic 0:fbdae7e6d805 25 #include "BlockDevice.h"
borlanic 0:fbdae7e6d805 26 #include "mbed.h"
borlanic 0:fbdae7e6d805 27
borlanic 0:fbdae7e6d805 28
borlanic 0:fbdae7e6d805 29 /** Block device for measuring storage operations of another block device
borlanic 0:fbdae7e6d805 30 *
borlanic 0:fbdae7e6d805 31 * @code
borlanic 0:fbdae7e6d805 32 * #include "mbed.h"
borlanic 0:fbdae7e6d805 33 * #include "HeapBlockDevice.h"
borlanic 0:fbdae7e6d805 34 * #include "ProfilingBlockDevice.h"
borlanic 0:fbdae7e6d805 35 *
borlanic 0:fbdae7e6d805 36 * // Create a heap block device and profiling block device
borlanic 0:fbdae7e6d805 37 * HeapBlockDevice mem(64*512, 512);
borlanic 0:fbdae7e6d805 38 * ProfilingBlockDevice profiler(&mem);
borlanic 0:fbdae7e6d805 39 *
borlanic 0:fbdae7e6d805 40 * // do block device work....
borlanic 0:fbdae7e6d805 41 *
borlanic 0:fbdae7e6d805 42 * printf("read count: %lld\n", profiler.get_read_count());
borlanic 0:fbdae7e6d805 43 * printf("program count: %lld\n", profiler.get_program_count());
borlanic 0:fbdae7e6d805 44 * printf("erase count: %lld\n", profiler.get_erase_count());
borlanic 0:fbdae7e6d805 45 * @endcode
borlanic 0:fbdae7e6d805 46 */
borlanic 0:fbdae7e6d805 47 class ProfilingBlockDevice : public BlockDevice
borlanic 0:fbdae7e6d805 48 {
borlanic 0:fbdae7e6d805 49 public:
borlanic 0:fbdae7e6d805 50 /** Lifetime of the memory block device
borlanic 0:fbdae7e6d805 51 *
borlanic 0:fbdae7e6d805 52 * @param bd Block device to back the ProfilingBlockDevice
borlanic 0:fbdae7e6d805 53 */
borlanic 0:fbdae7e6d805 54 ProfilingBlockDevice(BlockDevice *bd);
borlanic 0:fbdae7e6d805 55
borlanic 0:fbdae7e6d805 56 /** Lifetime of a block device
borlanic 0:fbdae7e6d805 57 */
borlanic 0:fbdae7e6d805 58 virtual ~ProfilingBlockDevice() {};
borlanic 0:fbdae7e6d805 59
borlanic 0:fbdae7e6d805 60 /** Initialize a block device
borlanic 0:fbdae7e6d805 61 *
borlanic 0:fbdae7e6d805 62 * @return 0 on success or a negative error code on failure
borlanic 0:fbdae7e6d805 63 * @note The init and deinit functions do not effect profile counts
borlanic 0:fbdae7e6d805 64 */
borlanic 0:fbdae7e6d805 65 virtual int init();
borlanic 0:fbdae7e6d805 66
borlanic 0:fbdae7e6d805 67 /** Deinitialize a block device
borlanic 0:fbdae7e6d805 68 *
borlanic 0:fbdae7e6d805 69 * @return 0 on success or a negative error code on failure
borlanic 0:fbdae7e6d805 70 * @note The init and deinit functions do not effect profile counts
borlanic 0:fbdae7e6d805 71 */
borlanic 0:fbdae7e6d805 72 virtual int deinit();
borlanic 0:fbdae7e6d805 73
borlanic 0:fbdae7e6d805 74 /** Ensure data on storage is in sync with the driver
borlanic 0:fbdae7e6d805 75 *
borlanic 0:fbdae7e6d805 76 * @return 0 on success or a negative error code on failure
borlanic 0:fbdae7e6d805 77 */
borlanic 0:fbdae7e6d805 78 virtual int sync();
borlanic 0:fbdae7e6d805 79
borlanic 0:fbdae7e6d805 80 /** Read blocks from a block device
borlanic 0:fbdae7e6d805 81 *
borlanic 0:fbdae7e6d805 82 * @param buffer Buffer to read blocks into
borlanic 0:fbdae7e6d805 83 * @param addr Address of block to begin reading from
borlanic 0:fbdae7e6d805 84 * @param size Size to read in bytes, must be a multiple of read block size
borlanic 0:fbdae7e6d805 85 * @return 0 on success, negative error code on failure
borlanic 0:fbdae7e6d805 86 */
borlanic 0:fbdae7e6d805 87 virtual int read(void *buffer, bd_addr_t addr, bd_size_t size);
borlanic 0:fbdae7e6d805 88
borlanic 0:fbdae7e6d805 89 /** Program blocks to a block device
borlanic 0:fbdae7e6d805 90 *
borlanic 0:fbdae7e6d805 91 * The blocks must have been erased prior to being programmed
borlanic 0:fbdae7e6d805 92 *
borlanic 0:fbdae7e6d805 93 * @param buffer Buffer of data to write to blocks
borlanic 0:fbdae7e6d805 94 * @param addr Address of block to begin writing to
borlanic 0:fbdae7e6d805 95 * @param size Size to write in bytes, must be a multiple of program block size
borlanic 0:fbdae7e6d805 96 * @return 0 on success, negative error code on failure
borlanic 0:fbdae7e6d805 97 */
borlanic 0:fbdae7e6d805 98 virtual int program(const void *buffer, bd_addr_t addr, bd_size_t size);
borlanic 0:fbdae7e6d805 99
borlanic 0:fbdae7e6d805 100 /** Erase blocks on a block device
borlanic 0:fbdae7e6d805 101 *
borlanic 0:fbdae7e6d805 102 * The state of an erased block is undefined until it has been programmed,
borlanic 0:fbdae7e6d805 103 * unless get_erase_value returns a non-negative byte value
borlanic 0:fbdae7e6d805 104 *
borlanic 0:fbdae7e6d805 105 * @param addr Address of block to begin erasing
borlanic 0:fbdae7e6d805 106 * @param size Size to erase in bytes, must be a multiple of erase block size
borlanic 0:fbdae7e6d805 107 * @return 0 on success, negative error code on failure
borlanic 0:fbdae7e6d805 108 */
borlanic 0:fbdae7e6d805 109 virtual int erase(bd_addr_t addr, bd_size_t size);
borlanic 0:fbdae7e6d805 110
borlanic 0:fbdae7e6d805 111 /** Get the size of a readable block
borlanic 0:fbdae7e6d805 112 *
borlanic 0:fbdae7e6d805 113 * @return Size of a readable block in bytes
borlanic 0:fbdae7e6d805 114 */
borlanic 0:fbdae7e6d805 115 virtual bd_size_t get_read_size() const;
borlanic 0:fbdae7e6d805 116
borlanic 0:fbdae7e6d805 117 /** Get the size of a programmable block
borlanic 0:fbdae7e6d805 118 *
borlanic 0:fbdae7e6d805 119 * @return Size of a programmable block in bytes
borlanic 0:fbdae7e6d805 120 * @note Must be a multiple of the read size
borlanic 0:fbdae7e6d805 121 */
borlanic 0:fbdae7e6d805 122 virtual bd_size_t get_program_size() const;
borlanic 0:fbdae7e6d805 123
borlanic 0:fbdae7e6d805 124 /** Get the size of an erasable block
borlanic 0:fbdae7e6d805 125 *
borlanic 0:fbdae7e6d805 126 * @return Size of an erasable block in bytes
borlanic 0:fbdae7e6d805 127 * @note Must be a multiple of the program size
borlanic 0:fbdae7e6d805 128 */
borlanic 0:fbdae7e6d805 129 virtual bd_size_t get_erase_size() const;
borlanic 0:fbdae7e6d805 130
borlanic 0:fbdae7e6d805 131 /** Get the size of an erasable block given address
borlanic 0:fbdae7e6d805 132 *
borlanic 0:fbdae7e6d805 133 * @param addr Address within the erasable block
borlanic 0:fbdae7e6d805 134 * @return Size of an erasable block in bytes
borlanic 0:fbdae7e6d805 135 * @note Must be a multiple of the program size
borlanic 0:fbdae7e6d805 136 */
borlanic 0:fbdae7e6d805 137 virtual bd_size_t get_erase_size(bd_addr_t addr) const;
borlanic 0:fbdae7e6d805 138
borlanic 0:fbdae7e6d805 139 /** Get the value of storage when erased
borlanic 0:fbdae7e6d805 140 *
borlanic 0:fbdae7e6d805 141 * If get_erase_value returns a non-negative byte value, the underlying
borlanic 0:fbdae7e6d805 142 * storage is set to that value when erased, and you can program storage
borlanic 0:fbdae7e6d805 143 * containing that value without another erase.
borlanic 0:fbdae7e6d805 144 *
borlanic 0:fbdae7e6d805 145 * @return The value of storage when erased, or -1 if you can't
borlanic 0:fbdae7e6d805 146 * rely on the value of erased storage
borlanic 0:fbdae7e6d805 147 */
borlanic 0:fbdae7e6d805 148 virtual int get_erase_value() const;
borlanic 0:fbdae7e6d805 149
borlanic 0:fbdae7e6d805 150 /** Get the total size of the underlying device
borlanic 0:fbdae7e6d805 151 *
borlanic 0:fbdae7e6d805 152 * @return Size of the underlying device in bytes
borlanic 0:fbdae7e6d805 153 */
borlanic 0:fbdae7e6d805 154 virtual bd_size_t size() const;
borlanic 0:fbdae7e6d805 155
borlanic 0:fbdae7e6d805 156 /** Reset the current profile counts to zero
borlanic 0:fbdae7e6d805 157 */
borlanic 0:fbdae7e6d805 158 void reset();
borlanic 0:fbdae7e6d805 159
borlanic 0:fbdae7e6d805 160 /** Get number of bytes that have been read from the block device
borlanic 0:fbdae7e6d805 161 *
borlanic 0:fbdae7e6d805 162 * @return The number of bytes that have been read from the block device
borlanic 0:fbdae7e6d805 163 */
borlanic 0:fbdae7e6d805 164 bd_size_t get_read_count() const;
borlanic 0:fbdae7e6d805 165
borlanic 0:fbdae7e6d805 166 /** Get number of bytes that have been programed to the block device
borlanic 0:fbdae7e6d805 167 *
borlanic 0:fbdae7e6d805 168 * @return The number of bytes that have been programed to the block device
borlanic 0:fbdae7e6d805 169 */
borlanic 0:fbdae7e6d805 170 bd_size_t get_program_count() const;
borlanic 0:fbdae7e6d805 171
borlanic 0:fbdae7e6d805 172 /** Get number of bytes that have been erased from the block device
borlanic 0:fbdae7e6d805 173 *
borlanic 0:fbdae7e6d805 174 * @return The number of bytes that have been erased from the block device
borlanic 0:fbdae7e6d805 175 */
borlanic 0:fbdae7e6d805 176 bd_size_t get_erase_count() const;
borlanic 0:fbdae7e6d805 177
borlanic 0:fbdae7e6d805 178 private:
borlanic 0:fbdae7e6d805 179 BlockDevice *_bd;
borlanic 0:fbdae7e6d805 180 bd_size_t _read_count;
borlanic 0:fbdae7e6d805 181 bd_size_t _program_count;
borlanic 0:fbdae7e6d805 182 bd_size_t _erase_count;
borlanic 0:fbdae7e6d805 183 };
borlanic 0:fbdae7e6d805 184
borlanic 0:fbdae7e6d805 185
borlanic 0:fbdae7e6d805 186 #endif