static unsigned ffsb_appendfile_core(ffsb_thread_t *ft, ffsb_fs_t *fs,
unsigned opnum, uint64_t *filesize_ret,
int fsync_file)
{
struct benchfiles *bf = (struct benchfiles *)fs_get_opdata(fs, opnum);
struct ffsb_file *curfile;
int fd;
char *buf = ft_getbuf(ft);
uint32_t write_size = ft_get_write_size(ft);
uint32_t write_blocksize = ft_get_write_blocksize(ft);
struct randdata *rd = ft_get_randdata(ft);
unsigned iterations = 0;
curfile = choose_file_reader(bf, rd);
fd = fhopenappend(curfile->name, ft, fs);
unlock_file_reader(curfile);
curfile->size += (uint64_t)write_size;
iterations = writefile_helper(fd, write_size, write_blocksize, buf,
ft, fs);
if (fsync_file)
if (fsync(fd)) {
perror("fsync");
printf("aborting\n");
exit(1);
}
fhclose(fd, ft, fs);
*filesize_ret = write_size;
return iterations;
}
/* Just like ffsb_readfile but we read the whole file from start to
* finish regardless of file size.
*/
void ffsb_readall(ffsb_thread_t *ft, ffsb_fs_t *fs, unsigned opnum)
{
struct benchfiles *bf = (struct benchfiles *)fs_get_opdata(fs, opnum);
struct ffsb_file *curfile = NULL;
int fd;
uint64_t filesize;
char *buf = ft_getbuf(ft);
uint32_t read_blocksize = ft_get_read_blocksize(ft);
struct randdata *rd = ft_get_randdata(ft);
unsigned iterations = 0;
curfile = choose_file_reader(bf, rd);
fd = fhopenread(curfile->name, ft, fs);
filesize = ffsb_get_filesize(curfile->name);
iterations = readfile_helper(fd, filesize, read_blocksize, buf, ft, fs);
unlock_file_reader(curfile);
fhclose(fd, ft, fs);
ft_incr_op(ft, opnum, iterations, filesize);
ft_add_readbytes(ft, filesize);
}
void ffsb_stat(ffsb_thread_t *ft, ffsb_fs_t *fs, unsigned opnum)
{
struct benchfiles *bf = (struct benchfiles *)fs_get_opdata(fs, opnum);
struct ffsb_file *curfile = NULL;
randdata_t *rd = ft_get_randdata(ft);
curfile = choose_file_reader(bf, rd);
fhstat(curfile->name, ft, fs);
unlock_file_reader(curfile);
ft_incr_op(ft, opnum, 1, 0);
}
struct ffsb_file *choose_file_reader(struct benchfiles *bf, randdata_t *rd)
{
struct ffsb_file *ret;
rw_lock_read(&bf->fileslock);
/* If b->holes->count == bf->listsize, all files have been
* deleted!
*/
assert(bf->holes->count != bf->listsize);
ret = choose_file(bf, rd);
if (rw_trylock_read(&ret->lock)) {
rw_unlock_read(&bf->fileslock);
return choose_file_reader(bf, rd);
}
rw_unlock_read(&bf->fileslock);
return ret;
}
void ffsb_readfile(ffsb_thread_t *ft, ffsb_fs_t *fs, unsigned opnum)
{
struct benchfiles *bf = (struct benchfiles *)fs_get_opdata(fs, opnum);
struct ffsb_file *curfile = NULL;
int fd;
uint64_t filesize;
char *buf = ft_getbuf(ft);
int read_random = ft_get_read_random(ft);
uint64_t read_size = ft_get_read_size(ft);
uint32_t read_blocksize = ft_get_read_blocksize(ft);
uint32_t read_skipsize = ft_get_read_skipsize(ft);
int skip_reads = ft_get_read_skip(ft);
struct randdata *rd = ft_get_randdata(ft);
uint64_t iterations = 0;
curfile = choose_file_reader(bf, rd);
fd = fhopenread(curfile->name, ft, fs);
filesize = ffsb_get_filesize(curfile->name);
assert(filesize >= read_size);
/* Sequential read, starting at a random point */
if (!read_random) {
uint64_t range = filesize - read_size;
uint64_t offset = 0;
/* Skip or "stride" reads option */
if (skip_reads) {
unsigned i, last;
uint64_t minfilesize;
iterations = read_size / read_blocksize;
last = read_size % read_blocksize;
/* Double check that the user hasn't specified
* a read_size that is too large when combined
* with the seeks
*/
if (last)
minfilesize = last + iterations *
(read_blocksize + read_skipsize);
else
minfilesize = read_blocksize + iterations - 1 *
(read_blocksize + read_skipsize);
if (minfilesize > filesize) {
printf("Error: read size %llu bytes too big "
"w/ skipsize %u and blocksize %u,"
" for file of size %llu bytes\n"
" aborting\n\n", read_size,
read_skipsize, read_blocksize,
filesize);
printf("minimum file size must be at least "
" %llu bytes\n", minfilesize);
exit(1);
}
for (i = 0; i < iterations; i++) {
fhread(fd, buf, read_blocksize, ft, fs);
fhseek(fd, (uint64_t)read_skipsize, SEEK_CUR,
ft, fs);
}
if (last) {
fhread(fd, buf, (uint64_t)last, ft, fs);
iterations++;
}
} else {
/* Regular sequential reads */
if (range) {
offset = get_random_offset(rd, range,
fs_get_alignio(fs));
fhseek(fd, offset, SEEK_SET, ft, fs);
}
iterations = readfile_helper(fd, read_size,
read_blocksize, buf,
ft, fs);
}
} else {
/* Randomized read */
uint64_t range = filesize - read_blocksize;
int i;
iterations = read_size / read_blocksize;
for (i = 0; i < iterations; i++) {
uint64_t offset = get_random_offset(rd, range,
fs_get_alignio(fs));
fhseek(fd, offset, SEEK_SET, ft, fs);
fhread(fd, buf, read_blocksize, ft, fs);
}
}
unlock_file_reader(curfile);
fhclose(fd, ft, fs);
ft_incr_op(ft, opnum, iterations, read_size);
ft_add_readbytes(ft, read_size);
}
static unsigned ffsb_writefile_core(ffsb_thread_t *ft, ffsb_fs_t *fs,
unsigned opnum, uint64_t *filesize_ret,
int fsync_file)
{
struct benchfiles *bf = (struct benchfiles *)fs_get_opdata(fs, opnum);
struct ffsb_file *curfile = NULL;
int fd;
uint64_t filesize;
char *buf = ft_getbuf(ft);
int write_random = ft_get_write_random(ft);
uint32_t write_size = ft_get_write_size(ft);
uint32_t write_blocksize = ft_get_write_blocksize(ft);
struct randdata *rd = ft_get_randdata(ft);
unsigned iterations = 0;
curfile = choose_file_reader(bf, rd);
fd = fhopenwrite(curfile->name, ft, fs);
filesize = ffsb_get_filesize(curfile->name);
assert(filesize >= write_size);
/* Sequential write, starting at a random point */
if (!write_random) {
uint64_t range = filesize - write_size;
uint64_t offset = 0;
if (range) {
offset = get_random_offset(rd, range,
fs_get_alignio(fs));
fhseek(fd, offset, SEEK_SET, ft, fs);
}
iterations = writefile_helper(fd, write_size, write_blocksize,
buf, ft, fs);
} else {
/* Randomized write */
uint64_t range = filesize - write_blocksize;
int i;
iterations = write_size / write_blocksize;
for (i = 0; i < iterations; i++) {
uint64_t offset = get_random_offset(rd, range,
fs_get_alignio(fs));
fhseek(fd, offset, SEEK_SET, ft, fs);
fhwrite(fd, buf, write_blocksize, ft, fs);
}
}
if (fsync_file) {
if (fsync(fd)) {
perror("fsync");
printf("aborting\n");
exit(1);
}
}
unlock_file_reader(curfile);
fhclose(fd, ft, fs);
*filesize_ret = filesize;
return iterations;
}