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Dependents: TYBLE16_simple_data_logger TYBLE16_MP3_Air
ProfilingBlockDevice Class Reference
Block device for measuring storage operations of another block device. More...
#include <ProfilingBlockDevice.h>
Inherits mbed::BlockDevice.
Public Member Functions | |
| ProfilingBlockDevice (BlockDevice *bd) | |
| Lifetime of the memory block device. | |
| virtual | ~ProfilingBlockDevice () |
| Lifetime of a block device. | |
| virtual int | init () |
| Initialize a block device. | |
| virtual int | deinit () |
| Deinitialize a block device. | |
| virtual int | sync () |
| Ensure data on storage is in sync with the driver. | |
| virtual int | read (void *buffer, bd_addr_t addr, bd_size_t size) |
| Read blocks from a block device. | |
| virtual int | program (const void *buffer, bd_addr_t addr, bd_size_t size) |
| Program blocks to a block device. | |
| virtual int | erase (bd_addr_t addr, bd_size_t size) |
| Erase blocks on a block device. | |
| virtual bd_size_t | get_read_size () const |
| Get the size of a readable block. | |
| virtual bd_size_t | get_program_size () const |
| Get the size of a programmable block. | |
| virtual bd_size_t | get_erase_size () const |
| Get the size of an erasable block. | |
| virtual bd_size_t | get_erase_size (bd_addr_t addr) const |
| Get the size of an erasable block given address. | |
| virtual int | get_erase_value () const |
| Get the value of storage when erased. | |
| virtual bd_size_t | size () const |
| Get the total size of the underlying device. | |
| void | reset () |
| Reset the current profile counts to zero. | |
| bd_size_t | get_read_count () const |
| Get number of bytes that have been read from the block device. | |
| bd_size_t | get_program_count () const |
| Get number of bytes that have been programed to the block device. | |
| bd_size_t | get_erase_count () const |
| Get number of bytes that have been erased from the block device. | |
| virtual const char * | get_type () const |
| Get the BlockDevice class type. | |
| virtual int | trim (bd_addr_t addr, bd_size_t size) |
| Mark blocks as no longer in use. | |
| virtual bool | is_valid_read (bd_addr_t addr, bd_size_t size) const |
| Convenience function for checking block read validity. | |
| virtual bool | is_valid_program (bd_addr_t addr, bd_size_t size) const |
| Convenience function for checking block program validity. | |
| virtual bool | is_valid_erase (bd_addr_t addr, bd_size_t size) const |
| Convenience function for checking block erase validity. | |
Static Public Member Functions | |
| static BlockDevice * | get_default_instance () |
| Return the default block device. | |
Detailed Description
Block device for measuring storage operations of another block device.
Definition at line 36 of file ProfilingBlockDevice.h.
Constructor & Destructor Documentation
| ProfilingBlockDevice | ( | BlockDevice * | bd ) |
Lifetime of the memory block device.
- Parameters:
-
bd Block device to back the ProfilingBlockDevice
Definition at line 22 of file ProfilingBlockDevice.cpp.
| virtual ~ProfilingBlockDevice | ( | ) | [virtual] |
Lifetime of a block device.
Definition at line 46 of file ProfilingBlockDevice.h.
Member Function Documentation
| int deinit | ( | ) | [virtual] |
Deinitialize a block device.
- Returns:
- 0 on success or a negative error code on failure
- Note:
- The init and deinit functions do not effect profile counts
Implements BlockDevice.
Definition at line 35 of file ProfilingBlockDevice.cpp.
| int erase | ( | bd_addr_t | addr, |
| bd_size_t | size | ||
| ) | [virtual] |
Erase blocks on a block device.
The state of an erased block is undefined until it has been programmed, unless get_erase_value returns a non-negative byte value
- Parameters:
-
addr Address of block to begin erasing size Size to erase in bytes, must be a multiple of erase block size
- Returns:
- 0 on success or a negative error code on failure
Reimplemented from BlockDevice.
Definition at line 63 of file ProfilingBlockDevice.cpp.
| MBED_WEAK BlockDevice * get_default_instance | ( | ) | [static, inherited] |
Return the default block device.
Returns the default block device based on the configuration JSON. Use the components in target.json or application config to change the default block device.
An application can override all target settings by implementing BlockDevice::get_default_instance() - the default definition is weak, and calls get_target_default_instance().
Definition at line 63 of file SystemStorage.cpp.
| bd_size_t get_erase_count | ( | ) | const |
Get number of bytes that have been erased from the block device.
- Returns:
- The number of bytes that have been erased from the block device
Definition at line 119 of file ProfilingBlockDevice.cpp.
| bd_size_t get_erase_size | ( | ) | const [virtual] |
Get the size of an erasable block.
- Returns:
- Size of an erasable block in bytes
- Note:
- Must be a multiple of the program size
Reimplemented from BlockDevice.
Definition at line 82 of file ProfilingBlockDevice.cpp.
| bd_size_t get_erase_size | ( | bd_addr_t | addr ) | const [virtual] |
Get the size of an erasable block given address.
- Parameters:
-
addr Address within the erasable block
- Returns:
- Size of an erasable block in bytes
- Note:
- Must be a multiple of the program size
Reimplemented from BlockDevice.
Definition at line 87 of file ProfilingBlockDevice.cpp.
| int get_erase_value | ( | ) | const [virtual] |
Get the value of storage when erased.
If get_erase_value returns a non-negative byte value, the underlying storage is set to that value when erased, and you can program storage containing that value without another erase.
- Returns:
- The value of storage when erased, or -1 if you can't rely on the value of erased storage
Reimplemented from BlockDevice.
Definition at line 92 of file ProfilingBlockDevice.cpp.
| bd_size_t get_program_count | ( | ) | const |
Get number of bytes that have been programed to the block device.
- Returns:
- The number of bytes that have been programed to the block device
Definition at line 114 of file ProfilingBlockDevice.cpp.
| bd_size_t get_program_size | ( | ) | const [virtual] |
Get the size of a programmable block.
- Returns:
- Size of a programmable block in bytes
- Note:
- Must be a multiple of the read size
Implements BlockDevice.
Definition at line 77 of file ProfilingBlockDevice.cpp.
| bd_size_t get_read_count | ( | ) | const |
Get number of bytes that have been read from the block device.
- Returns:
- The number of bytes that have been read from the block device
Definition at line 109 of file ProfilingBlockDevice.cpp.
| bd_size_t get_read_size | ( | ) | const [virtual] |
Get the size of a readable block.
- Returns:
- Size of a readable block in bytes
Implements BlockDevice.
Definition at line 72 of file ProfilingBlockDevice.cpp.
| const char * get_type | ( | ) | const [virtual] |
Get the BlockDevice class type.
- Returns:
- A string represent the BlockDevice class type.
Implements BlockDevice.
Definition at line 124 of file ProfilingBlockDevice.cpp.
| int init | ( | ) | [virtual] |
Initialize a block device.
- Returns:
- 0 on success or a negative error code on failure
- Note:
- The init and deinit functions do not effect profile counts
Implements BlockDevice.
Definition at line 30 of file ProfilingBlockDevice.cpp.
| virtual bool is_valid_erase | ( | bd_addr_t | addr, |
| bd_size_t | size | ||
| ) | const [virtual, inherited] |
Convenience function for checking block erase validity.
- Parameters:
-
addr Address of block to begin erasing size Size to erase in bytes
- Returns:
- True if erase is valid for underlying block device
Reimplemented in SlicingBlockDevice.
Definition at line 229 of file BlockDevice.h.
| virtual bool is_valid_program | ( | bd_addr_t | addr, |
| bd_size_t | size | ||
| ) | const [virtual, inherited] |
Convenience function for checking block program validity.
- Parameters:
-
addr Address of block to begin writing to size Size to write in bytes
- Returns:
- True if program is valid for underlying block device
Reimplemented in SlicingBlockDevice.
Definition at line 215 of file BlockDevice.h.
| virtual bool is_valid_read | ( | bd_addr_t | addr, |
| bd_size_t | size | ||
| ) | const [virtual, inherited] |
Convenience function for checking block read validity.
- Parameters:
-
addr Address of block to begin reading from size Size to read in bytes
- Returns:
- True if read is valid for underlying block device
Reimplemented in SlicingBlockDevice.
Definition at line 201 of file BlockDevice.h.
| int program | ( | const void * | buffer, |
| bd_addr_t | addr, | ||
| bd_size_t | size | ||
| ) | [virtual] |
Program blocks to a block device.
The blocks must have been erased prior to being programmed
- Parameters:
-
buffer Buffer of data to write to blocks addr Address of block to begin writing to size Size to write in bytes, must be a multiple of program block size
- Returns:
- 0 on success or a negative error code on failure
Implements BlockDevice.
Definition at line 54 of file ProfilingBlockDevice.cpp.
| int read | ( | void * | buffer, |
| bd_addr_t | addr, | ||
| bd_size_t | size | ||
| ) | [virtual] |
Read blocks from a block device.
- Parameters:
-
buffer Buffer to read blocks into addr Address of block to begin reading from size Size to read in bytes, must be a multiple of read block size
- Returns:
- 0 on success or a negative error code on failure
Implements BlockDevice.
Definition at line 45 of file ProfilingBlockDevice.cpp.
| void reset | ( | void | ) |
Reset the current profile counts to zero.
Definition at line 102 of file ProfilingBlockDevice.cpp.
| bd_size_t size | ( | ) | const [virtual] |
Get the total size of the underlying device.
- Returns:
- Size of the underlying device in bytes
Implements BlockDevice.
Definition at line 97 of file ProfilingBlockDevice.cpp.
| int sync | ( | ) | [virtual] |
Ensure data on storage is in sync with the driver.
- Returns:
- 0 on success or a negative error code on failure
Reimplemented from BlockDevice.
Definition at line 40 of file ProfilingBlockDevice.cpp.
| virtual int trim | ( | bd_addr_t | addr, |
| bd_size_t | size | ||
| ) | [virtual, inherited] |
Mark blocks as no longer in use.
This function provides a hint to the underlying block device that a region of blocks is no longer in use and may be erased without side effects. Erase must still be called before programming, but trimming allows flash-translation-layers to schedule erases when the device is not busy.
- Parameters:
-
addr Address of block to mark as unused size Size to mark as unused in bytes, must be a multiple of the erase block size
- Returns:
- 0 on success or a negative error code on failure
Reimplemented in SDBlockDevice, and BufferedBlockDevice.
Definition at line 136 of file BlockDevice.h.
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