static int
blobcache_save(int fd, const void *data, size_t size, time_t expire,
int lockhash)
{
uint8_t buf[4];
#ifndef BC_USE_FILE_LOCKS
hts_mutex_lock(&blobcache_lock[lockhash & BC_FILE_LOCKS_MASK]);
#else
if(flock(fd, LOCK_EX))
return -1;
#endif
buf[0] = expire >> 24;
buf[1] = expire >> 16;
buf[2] = expire >> 8;
buf[3] = expire;
if(write(fd, buf, 4) != 4)
goto bad;
if(write(fd, data, size) != size)
goto bad;
if(ftruncate(fd, size + 4))
goto bad;
hts_mutex_lock(&blobcache_mutex);
blobcache_size_current += size + 4;
if(blobcache_size_current > blobcache_size_max) {
if(!callout_isarmed(&blobcache_callout))
callout_arm(&blobcache_callout, blobcache_do_prune, NULL, 5);
}
hts_mutex_unlock(&blobcache_mutex);
#ifndef BC_USE_FILE_LOCKS
hts_mutex_unlock(&blobcache_lock[lockhash & BC_FILE_LOCKS_MASK]);
#endif
return 0;
bad:
#ifndef BC_USE_FILE_LOCKS
hts_mutex_unlock(&blobcache_lock[lockhash & BC_FILE_LOCKS_MASK]);
#endif
return -1;
}
static void
blobcache_put0(sqlite3 *db, const char *key, const char *stash,
const void *data, size_t size, int maxage,
const char *etag, time_t mtime)
{
int rc;
time_t now = time(NULL);
sqlite3_stmt *stmt;
rc = sqlite3_prepare_v2(db,
"INSERT OR REPLACE INTO item "
"(k, stash, payload, lastaccess, expiry, etag, modtime) "
"VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7)",
-1, &stmt, NULL);
if(rc != SQLITE_OK) {
TRACE(TRACE_ERROR, "SQLITE", "SQL Error at %s:%d",
__FUNCTION__, __LINE__);
return;
}
sqlite3_bind_text(stmt, 1, key, -1, SQLITE_STATIC);
sqlite3_bind_text(stmt, 2, stash, -1, SQLITE_STATIC);
sqlite3_bind_blob(stmt, 3, data, size, SQLITE_STATIC);
sqlite3_bind_int(stmt, 4, now);
sqlite3_bind_int64(stmt, 5, (int64_t)now + maxage);
if(etag != NULL)
sqlite3_bind_text(stmt, 6, etag, -1, SQLITE_STATIC);
if(mtime != 0)
sqlite3_bind_int(stmt, 7, mtime);
rc = sqlite3_step(stmt);
sqlite3_finalize(stmt);
int s = atomic_add(&estimated_cache_size, size) + size;
if(blobcache_compute_maxsize(s) < s && !callout_isarmed(&blobcache_callout))
callout_arm(&blobcache_callout, blobcache_do_prune, NULL, 5);
}
