void
flushDNLC()
/* Flush directory-name lookup cache -- the hierarchy used has already
been created at the beginning of the benchmark */
{
int i;
struct stat buf;
#ifdef DEBUG2
printf("flushDNLC\n");
#endif
/* stat the dirs sequentially */
for (i = 0; i < numFilesDNLC; i++)
if (stat(fnameDNLC[i], &buf) == -1) {
perror("flushDNLC, stat");
exit(1);
}
/* stat the dirs in random order */
createPerm(&addrArrayDNLC, numFilesDNLC, 1, numFilesDNLC);
for (i = 0; i < numFilesDNLC; i++)
if (stat(fnameDNLC[addrArrayDNLC[i]], &buf) == -1) {
perror("flushDNLC, stat");
exit(1);
}
}
void
flushInode()
/* Flush inode cache -- the hierarchy used has already been created
at the beginning of the benchmark */
{
int i;
struct stat buf;
#ifdef DEBUG2
printf("flushInode\n");
#endif
/* stat the files sequentially */
for (i = 0; i < numFilesFlush; i++)
if (stat(fnameFlush[i], &buf) < 0) {
perror("flushInode, stat");
exit(1);
}
/* stat the files in random order */
createPerm(&addrArrayFlush, numFilesFlush, 1, numFilesFlush);
for (i = 0; i < numFilesFlush; i++)
if (stat(fnameFlush[addrArrayFlush[i]], &buf) < 0) {
perror("flushInode, stat2");
exit(1);
}
}
revtrie createRevTrie(uint *string, uint *id, lztrie trie, uint *emptybmap, uint n)
{
revtrie T;
uint i;
T = malloc(sizeof(struct srevtrie));
T->data = string;
T->pdata = createParentheses(string,2*n,false,true);
T->B = createBitmap(emptybmap, n,false);
T->n = n;
T->nbits = bits(trie->n-1);
T->rids = createPerm(id, trie->n, PARAMETER_T_RIDS);
T->trie = trie;
return T;
}
lztrie createLZTrie(uint *string, byte *letters, uint *id, uint n)
{
lztrie T;
uint i;
T = malloc(sizeof(struct slztrie));
T->data = string;
T->pdata = createParentheses(string,2*n,true,true);
T->n = n;
T->letters = letters;
// creates the ids permutation
T->ids = createPerm(id, n, PARAMETER_T_IDS);
// boost first access
T->boost = malloc(256*sizeof(trieNode));
for (i=0;i<256;i++) T->boost[i] = NULLT;
i = 1; // shortcut for first child of root
while (i != 2*n-1) { // shortcut for its closing parenthesis
T->boost[T->letters[i-rank(T->pdata->bdata,i)]] = i;
// shortcut for leftrankLZTrie
i = findclose(T->pdata,i)+1;
}
return T;
}
static_permutation_mrrr::static_permutation_mrrr(uint * elems, uint nelems, uint t, static_bitsequence_builder * bmb) {
permutation = createPerm(elems, nelems, t, bmb);
}
PermutationMRRR::PermutationMRRR(uint * elems, uint nelems, uint t, BitSequenceBuilder * bmb) {
permutation = createPerm(elems, nelems, t, bmb);
}
void
getInodeAccessTimes(struct sub_data *inodeAccess, char **dname, char **fname,
int numdirs, int numFiles)
{
int *perm;
int fd, i, j;
int startTime, endTime;
struct alfs_stat buf;
#ifdef DEBUG
printf("InodeAccessTime\n");
#endif
perm = (int *) myMalloc (sizeof(int) * numFiles);
/* create the files */
for (i = 0; i < numFiles; i++) {
if ((fd = open(fname[i], O_RDWR | O_CREAT | O_TRUNC, S_IRWXU)) == -1) {
perror("inodeAccess, create");
exit(1);
}
close(fd);
}
for (j = 0; j < reps; j++) {
/* create permuation */
createPerm(&perm, numFiles, 1, numFiles);
/* flush buffers */
flushAll();
/* stat the path to get the path into the cache */
for (i = 0; i < numdirs; i++)
if (stat(dname[i], &buf) < 0) {
perror("inodeAccess, stat path");
exit(1);
}
/* stat in creation order */
gettimeofday(&startTime, (struct timezone *) NULL);
for (i = 0; i < numFiles; i++) {
if (stat(fname[i], &buf) < 0) {
perror("inodeAccess, stat seq");
exit(1);
}
}
gettimeofday(&endTime, (struct timezone *) NULL);
inodeAccess->time1[j] = diffTime(startTime, endTime);
#ifdef DEBUG
printf("SEQ: numFiles: %d, time: %f\n", numFiles, inodeAccess->time1[j]);
#endif
/* flush buffers */
flushAll();
/* stat the path to get the path into the cache */
for (i = 0; i < numdirs; i++)
if (stat(dname[i], &buf) < 0) {
perror("inodeAccess, stat path 2");
exit(1);
}
/* stat in random order */
gettimeofday(&startTime, (struct timezone *) NULL);
for (i = 0; i < numFiles; i++) {
if (stat(fname[perm[i]], &buf) < 0) {
perror("inodeAccess, stat rand");
exit(1);
}
}
gettimeofday(&endTime, (struct timezone *) NULL);
inodeAccess->time2[j] = diffTime(startTime, endTime);
#ifdef DEBUG
printf("RAND: numFiles: %d, time: %f\n", numFiles, inodeAccess->time2[j]);
#endif
}
/* clean-up */
for (i = 0; i < numFiles; i++)
if (unlink(fname[i]) < 0) {
perror("inodeAccessTime, unlink");
exit(1);
}
free(perm);
}
