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Contiki 2.5
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Files | |
| file | storage_coffee.c |
Macros | |
| #define | STORAGE_FILE_NAME_LENGTH 15 |
| How long can a filename possibly be? | |
| #define | STORAGE_COFFEE_FLAGS_LOCKED 0x1 |
| Flags for the storage. | |
| #define | RADIO_SAFE_STATE_ON() NETSTACK_MAC.off(0) |
| COFFEE is so slow, that we are loosing radio packets while using the flash. More... | |
Functions | |
| void | storage_coffee_prune () |
| "Internal" functions More... | |
| uint16_t | storage_coffee_delete_bundle (uint32_t bundle_number, uint8_t reason) |
| deletes a bundle form storage More... | |
| struct mmem * | storage_coffee_read_bundle (uint32_t bundle_number) |
| reads a bundle from storage More... | |
| void | storage_coffee_reconstruct_bundles () |
| Restore bundles stored in CFS. | |
| void | storage_coffee_init (void) |
| called by agent at startup | |
| void | storage_coffee_reinit (void) |
| Sets the storage to its initial state. | |
| uint8_t | storage_coffee_make_room (struct mmem *bundlemem) |
| This function delete as many bundles from the storage as necessary to have at least one slot free. More... | |
| uint8_t | storage_coffee_save_bundle (struct mmem *bundlemem, uint32_t **bundle_number_ptr) |
| saves a bundle in storage More... | |
| uint16_t | storage_coffee_get_free_space (struct mmem *bundlemem) |
| checks if there is space for a bundle More... | |
| uint16_t | storage_coffee_get_bundle_numbers (void) |
| Get the number of slots available in storage. More... | |
| struct storage_entry_t * | storage_coffee_get_bundles (void) |
| Get the bundle list. More... | |
| uint8_t | storage_coffee_lock_bundle (uint32_t bundle_num) |
| Mark a bundle as locked so that it will not be deleted even if we are running out of space. More... | |
| void | storage_coffee_unlock_bundle (uint32_t bundle_num) |
| Mark a bundle as unlocked after being locked previously. | |
| #define RADIO_SAFE_STATE_ON | ( | ) | NETSTACK_MAC.off(0) |
COFFEE is so slow, that we are loosing radio packets while using the flash.
Unfortunately, the radio is sending LL ACKs for these packets, so the other side does not know. Therefore, we have to disable the radio while reading or writing COFFEE, to avoid sending ACKs for packets that we cannot read out of the buffer.
FIXME: This HACK is very ugly and poor design.
Definition at line 94 of file storage_coffee.c.
Referenced by storage_coffee_delete_bundle(), storage_coffee_init(), storage_coffee_read_bundle(), storage_coffee_reconstruct_bundles(), and storage_coffee_save_bundle().
| uint16_t storage_coffee_delete_bundle | ( | uint32_t | bundle_number, |
| uint8_t | reason | ||
| ) |
deletes a bundle form storage
| bundle_number | bundle number to be deleted |
| reason | reason code |
Definition at line 562 of file storage_coffee.c.
References bundle_decrement(), cfs_remove(), entry, list_head(), list_item_next(), list_remove(), memb_free(), MMEM_PTR, NULL, RADIO_SAFE_STATE_ON, STATUSREPORT, storage_coffee_read_bundle(), and STORAGE_FILE_NAME_LENGTH.
Referenced by storage_coffee_make_room(), storage_coffee_prune(), and storage_coffee_reinit().
| uint16_t storage_coffee_get_bundle_numbers | ( | void | ) |
Get the number of slots available in storage.
Definition at line 746 of file storage_coffee.c.
|
read |
Get the bundle list.
Definition at line 754 of file storage_coffee.c.
References list_head().
| uint16_t storage_coffee_get_free_space | ( | struct mmem * | bundlemem | ) |
checks if there is space for a bundle
| bundlemem | pointer to a bundle struct (not used here) |
Definition at line 737 of file storage_coffee.c.
References BUNDLE_STORAGE_SIZE.
| uint8_t storage_coffee_lock_bundle | ( | uint32_t | bundle_num | ) |
Mark a bundle as locked so that it will not be deleted even if we are running out of space.
| bundle_num | Bundle number |
Definition at line 765 of file storage_coffee.c.
References entry, list_head(), list_item_next(), NULL, and STORAGE_COFFEE_FLAGS_LOCKED.
| uint8_t storage_coffee_make_room | ( | struct mmem * | bundlemem | ) |
This function delete as many bundles from the storage as necessary to have at least one slot free.
| bundlemem | Pointer to the MMEM struct containing the bundle |
Definition at line 298 of file storage_coffee.c.
References BUNDLE_STORAGE_SIZE, entry, list_head(), list_item_next(), MMEM_PTR, NULL, storage_coffee_delete_bundle(), STORAGE_COFFEE_FLAGS_LOCKED, and storage_coffee_prune().
Referenced by storage_coffee_save_bundle().
| void storage_coffee_prune | ( | ) |
"Internal" functions
deletes expired bundles from storage
Definition at line 251 of file storage_coffee.c.
References ctimer_restart(), entry, list_head(), list_item_next(), NULL, and storage_coffee_delete_bundle().
Referenced by storage_coffee_init(), and storage_coffee_make_room().
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read |
reads a bundle from storage
| bundle_number | bundle number to read |
Definition at line 642 of file storage_coffee.c.
References bundle_create_bundle(), bundle_decrement(), cfs_close(), cfs_open(), CFS_READ, entry, list_head(), list_item_next(), MMEM_PTR, mmem_realloc(), NULL, RADIO_SAFE_STATE_ON, and STORAGE_FILE_NAME_LENGTH.
Referenced by storage_coffee_delete_bundle(), and storage_coffee_reconstruct_bundles().
| uint8_t storage_coffee_save_bundle | ( | struct mmem * | bundlemem, |
| uint32_t ** | bundle_number_ptr | ||
| ) |
saves a bundle in storage
| bundlemem | pointer to the MMEM struct containing the bundle |
| bundle_number_ptr | The pointer to the bundle number will be stored here |
Definition at line 421 of file storage_coffee.c.
References bundle_decrement(), cfs_close(), cfs_coffee_reserve(), cfs_open(), cfs_remove(), CFS_WRITE, entry, list_add(), list_head(), list_item_next(), memb_alloc(), memb_free(), MMEM_PTR, NULL, RADIO_SAFE_STATE_ON, storage_coffee_make_room(), and STORAGE_FILE_NAME_LENGTH.
1.8.3.1