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cut 500 bytes of ROM size.

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This commit is contained in:
nvt-se 2008-11-04 17:48:36 +00:00
parent c46bb21f5e
commit ae8c93d0aa
1 changed files with 47 additions and 39 deletions
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86
core/cfs/cfs-coffee.c
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@ -97,12 +97,6 @@
#define COFFEE_PAGE_COUNT (COFFEE_SIZE / COFFEE_PAGE_SIZE)
#define COFFEE_PAGES_PER_SECTOR (COFFEE_SECTOR_SIZE / COFFEE_PAGE_SIZE)
#define READ_HEADER(hdr, page) \
COFFEE_READ((hdr), sizeof(*hdr), (page) * COFFEE_PAGE_SIZE)
#define WRITE_HEADER(hdr, page) \
COFFEE_WRITE((hdr), sizeof(*hdr), (page) * COFFEE_PAGE_SIZE)
struct file_desc {
coffee_offset_t offset;
coffee_offset_t end;
@ -141,15 +135,28 @@ struct log_param {
static struct dir_cache dir_cache[COFFEE_DIR_CACHE_ENTRIES];
static struct file_desc coffee_fd_set[COFFEE_FD_SET_SIZE];
/*---------------------------------------------------------------------------*/
static void
write_header(struct file_header *hdr, coffee_page_t page)
{
COFFEE_WRITE(hdr, sizeof(*hdr), page * COFFEE_PAGE_SIZE);
}
/*---------------------------------------------------------------------------*/
static void
read_header(struct file_header *hdr, coffee_page_t page)
{
COFFEE_READ(hdr, sizeof(*hdr), page * COFFEE_PAGE_SIZE);
}
/*---------------------------------------------------------------------------*/
static void
get_sector_status(uint16_t sector, coffee_page_t *active,
coffee_page_t *free, coffee_page_t *obsolete) {
static coffee_page_t skip_pages;
static int last_pages_are_active;
coffee_offset_t offset, sector_start;
coffee_offset_t end;
struct file_header hdr;
static coffee_page_t skip_pages;
static int last_pages_are_active;
coffee_page_t jump;
int i;
*active = *free = *obsolete = 0;
@ -188,25 +195,26 @@ get_sector_status(uint16_t sector, coffee_page_t *active,
offset = sector_start + skip_pages * COFFEE_PAGE_SIZE;
end = (sector + 1) * COFFEE_SECTOR_SIZE;
jump = 0;
while(offset < end) {
COFFEE_READ(&hdr, sizeof(hdr), offset);
last_pages_are_active = 0;
if(COFFEE_PAGE_ACTIVE(hdr)) {
last_pages_are_active = 1;
offset += hdr.max_pages * COFFEE_PAGE_SIZE;
*active += hdr.max_pages;
jump = hdr.max_pages;
*active += jump;
} else if(COFFEE_PAGE_ISOLATED(hdr)) {
last_pages_are_active = 0;
offset += COFFEE_PAGE_SIZE;
jump = 1;
*obsolete++;
} else if(COFFEE_PAGE_OBSOLETE(hdr)) {
last_pages_are_active = 0;
offset += hdr.max_pages * COFFEE_PAGE_SIZE;
*obsolete += hdr.max_pages;
jump = hdr.max_pages;
*obsolete += jump;
} else if(COFFEE_PAGE_FREE(hdr)) {
*free = (end - offset) / COFFEE_PAGE_SIZE;
break;
}
offset += jump * COFFEE_PAGE_SIZE;
}
skip_pages = *active + *obsolete - COFFEE_PAGES_PER_SECTOR;
@ -253,7 +261,7 @@ dir_cache_find(const char *name)
for(i = 0; i < COFFEE_DIR_CACHE_ENTRIES; i++) {
if(*name == dir_cache[i].filename_start) {
READ_HEADER(&hdr, dir_cache[i].page);
read_header(&hdr, dir_cache[i].page);
if(!COFFEE_PAGE_ACTIVE(hdr)) {
dir_cache[i].filename_start = '\0';
} else if(strcmp(hdr.name, name) == 0) {
@ -278,7 +286,7 @@ find_file(const char *name)
page = 0;
do {
READ_HEADER(&hdr, page);
read_header(&hdr, page);
if(COFFEE_PAGE_ACTIVE(hdr)) {
if(strcmp(name, hdr.name) == 0) {
dir_cache_add(name[0], page);
@ -311,7 +319,7 @@ find_offset_in_file(int first_page)
int search_limit;
coffee_offset_t range_start, range_end, part_size;
READ_HEADER(&hdr, first_page);
read_header(&hdr, first_page);
search_limit = 0;
for(i = 0; i < sizeof(hdr.eof_hint) * CHAR_BIT; i++) {
if(hdr.eof_hint >> i) {
@ -363,7 +371,7 @@ find_contiguous_pages(unsigned wanted)
start = -1;
for(page = 0; page < COFFEE_PAGE_COUNT;) {
READ_HEADER(&hdr, page);
read_header(&hdr, page);
if(COFFEE_PAGE_FREE(hdr)) {
if(start == -1) {
start = page;
@ -424,20 +432,20 @@ remove_by_page(coffee_page_t page, int remove_log, int close_fds)
return -1;
}
READ_HEADER(&hdr, page);
read_header(&hdr, page);
if(!COFFEE_PAGE_ACTIVE(hdr)) {
return -1;
}
dir_cache_del(page);
hdr.flags |= COFFEE_FLAG_OBSOLETE;
WRITE_HEADER(&hdr, page);
write_header(&hdr, page);
if(remove_log && COFFEE_PAGE_MODIFIED(hdr)) {
log_page = hdr.log_page;
dir_cache_del(log_page);
READ_HEADER(&hdr, log_page);
read_header(&hdr, log_page);
hdr.flags |= COFFEE_FLAG_OBSOLETE;
WRITE_HEADER(&hdr, log_page);
write_header(&hdr, log_page);
}
/* Close all file descriptors that reference the remove file. */
@ -484,7 +492,7 @@ reserve(const char *name, uint32_t size, int allow_duplicates)
hdr.eof_hint = 0;
hdr.log_entries = 0;
hdr.log_entry_size = 0;
WRITE_HEADER(&hdr, page);
write_header(&hdr, page);
PRINTF("Coffee: Reserved %u pages starting from %u for file %s\n",
need_pages, page, name);
@ -605,10 +613,10 @@ create_log(coffee_page_t file_page, struct file_header *hdr)
hdr->flags |= COFFEE_FLAG_MODIFIED;
hdr->log_page = log_page;
WRITE_HEADER(hdr, file_page);
READ_HEADER(hdr, log_page);
write_header(hdr, file_page);
read_header(hdr, log_page);
hdr->flags |= COFFEE_FLAG_LOG;
WRITE_HEADER(hdr, log_page);
write_header(hdr, log_page);
for(i = 0; i < COFFEE_FD_SET_SIZE; i++) {
if(coffee_fd_set[i].file_page == file_page &&
coffee_fd_set[i].flags != COFFEE_FD_FREE) {
@ -626,7 +634,7 @@ merge_log(coffee_page_t file_page)
int fd, n;
coffee_offset_t offset;
READ_HEADER(&hdr, file_page);
read_header(&hdr, file_page);
log_page = hdr.log_page;
fd = cfs_open(hdr.name, CFS_READ);
@ -669,11 +677,11 @@ merge_log(coffee_page_t file_page)
}
/* Copy the log configuration and the EOF hint. */
READ_HEADER(&hdr2, new_file_page);
read_header(&hdr2, new_file_page);
hdr2.log_entry_size = hdr.log_entry_size;
hdr2.log_entries = hdr.log_entries;
hdr2.eof_hint = hdr.eof_hint;
WRITE_HEADER(&hdr2, new_file_page);
write_header(&hdr2, new_file_page);
/* Point the file descriptors to the new file page. */
for(n = 0; n < COFFEE_FD_SET_SIZE; n++) {
@ -703,7 +711,7 @@ write_log_page(struct file_desc *fdp, struct log_param *lp)
struct log_param lp_out;
uint16_t entry_count;
READ_HEADER(&hdr, fdp->file_page);
read_header(&hdr, fdp->file_page);
log_entries = hdr.log_entries == 0 ?
COFFEE_LOG_SIZE / COFFEE_PAGE_SIZE : hdr.log_entries;
@ -834,7 +842,7 @@ cfs_open(const char *name, int flags)
fdp->max_pages = (COFFEE_DYN_SIZE + sizeof(hdr) +
COFFEE_PAGE_SIZE - 1) / COFFEE_PAGE_SIZE;
} else {
READ_HEADER(&hdr, page);
read_header(&hdr, page);
if(COFFEE_PAGE_MODIFIED(hdr)) {
fdp->flags = COFFEE_FD_MODIFIED;
} else
@ -859,7 +867,7 @@ cfs_close(int fd)
uint8_t eof_hint;
if(FD_VALID(fd)) {
READ_HEADER(&hdr, coffee_fd_set[fd].file_page);
read_header(&hdr, coffee_fd_set[fd].file_page);
current_page = coffee_fd_set[fd].end / COFFEE_PAGE_SIZE;
part_size = hdr.max_pages / (sizeof(hdr.eof_hint) * CHAR_BIT);
if(part_size == 0) {
@ -871,7 +879,7 @@ cfs_close(int fd)
if(eof_hint > hdr.eof_hint) {
hdr.eof_hint |= eof_hint;
WRITE_HEADER(&hdr, coffee_fd_set[fd].file_page);
write_header(&hdr, coffee_fd_set[fd].file_page);
}
coffee_fd_set[fd].flags = COFFEE_FD_FREE;
@ -886,7 +894,7 @@ cfs_seek(int fd, unsigned offset)
if(!FD_VALID(fd)) {
return -1;
}
READ_HEADER(&hdr, coffee_fd_set[fd].file_page);
read_header(&hdr, coffee_fd_set[fd].file_page);
/* Check if the offset is within the file boundary. */
if(sizeof(hdr) + offset >= hdr.max_pages * COFFEE_PAGE_SIZE ||
@ -935,7 +943,7 @@ cfs_read(int fd, void *buf, unsigned size)
read_chunk = COFFEE_PAGE_SIZE;
if(FD_MODIFIED(fd)) {
READ_HEADER(&hdr, fdp->file_page);
read_header(&hdr, fdp->file_page);
if(hdr.log_entry_size > 0) {
read_chunk = hdr.log_entry_size;
}
@ -1051,7 +1059,7 @@ cfs_readdir(struct cfs_dir *dir, struct cfs_dirent *entry)
for(page = *(coffee_page_t *)dir->dummy_space; page < COFFEE_PAGE_COUNT;) {
watchdog_periodic();
READ_HEADER(&hdr, page);
read_header(&hdr, page);
if(COFFEE_PAGE_FREE(hdr)) {
page = (page + COFFEE_PAGES_PER_SECTOR) & ~(COFFEE_PAGES_PER_SECTOR - 1);
} else if(COFFEE_PAGE_ISOLATED(hdr)) {
@ -1098,7 +1106,7 @@ cfs_coffee_configure_log(const char *file, unsigned log_size, unsigned log_entry
return -1;
}
READ_HEADER(&hdr, page);
read_header(&hdr, page);
if(COFFEE_PAGE_MODIFIED(hdr)) {
/* Too late to customize the log. */
return -1;
@ -1106,7 +1114,7 @@ cfs_coffee_configure_log(const char *file, unsigned log_size, unsigned log_entry
hdr.log_entries = log_size / log_entry_size;
hdr.log_entry_size = log_entry_size;
WRITE_HEADER(&hdr, page);
write_header(&hdr, page);
return 0;
}