+/*---------- Other compaction-related entrypoints ----------*/
+
+static int compact_keepopen(Tcl_Interp *ip, Rw *rw, int force) {
+ off_t logsz;
+ long reccount;
+ int rc, r;
+
+ logsz= ftello(rw->logfile);
+ if (logsz < 0) return cht_posixerr(ip, errno, "ftell .log"
+ " during compact check or force");
+
+ if (!force && logsz < rw->mainsz / 10 + 1000) return TCL_OK;
+
+ rc= compact_core(ip, rw, logsz, &reccount); if (rc) goto x_rc;
+
+ maybe_close(rw->cdb_fd);
+ rw->cdb_fd= -1;
+ ht_destroy(&rw->logincore);
+ ht_setup(&rw->logincore);
+
+ rw->cdb_fd= open(pathbuf_sfx(&rw->pbsome,".cdb"), O_RDONLY);
+ if (rw->cdb_fd < 0) PE("reopen .cdb after compact");
+
+ rc= cdbinit(ip, rw); if (rc) goto x_rc;
+
+ rw->logfile= fopen(pathbuf_sfx(&rw->pbsome,".log"), "w");
+ if (!rw->logfile) PE("reopen .log after compact");
+
+ r= fsync(fileno(rw->logfile)); if (r) PE("fsync .log after compact reopen");
+
+ return TCL_OK;
+
+x_rc:
+ /* doom! all updates fail after this (because rw->logfile is 0), and
+ * we may be using a lot more RAM than would be ideal. Program will
+ * have to reopen if it really wants sanity. */
+ return rc;
+}
+
+int cht_do_cdbwr_compact_force(ClientData cd, Tcl_Interp *ip, void *rw_v) {
+ return compact_keepopen(ip, rw_v, 1);
+}
+int cht_do_cdbwr_compact_check(ClientData cd, Tcl_Interp *ip, void *rw_v) {
+ return compact_keepopen(ip, rw_v, 0);
+}
+
+int cht_do_cdbwr_compact_explicit(ClientData cd, Tcl_Interp *ip, void *rw_v) {
+ Rw *rw= rw_v;
+ rw->autocompact= 0;
+ return TCL_OK;
+}
+int cht_do_cdbwr_compact_auto(ClientData cd, Tcl_Interp *ip, void *rw_v) {
+ Rw *rw= rw_v;
+ rw->autocompact= 1;
+ return TCL_OK;
+}
+
+/*---------- Updateing ----------*/
+
+static int update(Tcl_Interp *ip, Rw *rw, const char *key,
+ const Byte *data, int dlen) {
+ HashValue *val;
+ int rc, r;
+
+ if (!rw->logfile) return cht_staticerr
+ (ip, "previous compact failed; cdbwr must be closed and reopened "
+ "before any further updates", "CDB BROKEN");
+
+ val= htv_prep(dlen); assert(val);
+ memcpy(htv_fillptr(val), data, dlen);
+
+ r= writerecord(rw->logfile, key, val);
+ if (!r) r= fflush(rw->logfile);
+ if (r) PE("write update to logfile");
+
+ ht_update(&rw->logincore, key, val);
+ return compact_keepopen(ip, rw, 0);
+
+ x_rc:
+ TFREE(val);
+ return rc;
+}
+
+int cht_do_cdbwr_update(ClientData cd, Tcl_Interp *ip,
+ void *rw_v, const char *key, Tcl_Obj *value) {
+ int dlen;
+ const char *data;
+ data= Tcl_GetStringFromObj(value, &dlen); assert(data);
+ return update(ip, rw_v, key, data, dlen);
+}
+
+int cht_do_cdbwr_update_hb(ClientData cd, Tcl_Interp *ip,
+ void *rw_v, const char *key, HBytes_Value value) {
+ return update(ip, rw_v, key, cht_hb_data(&value), cht_hb_len(&value));
+}
+
+int cht_do_cdbwr_delete(ClientData cd, Tcl_Interp *ip, void *rw_v,
+ const char *key) {
+ return update(ip, rw_v, key, 0, 0);
+}
+
+/*---------- Lookups ----------*/
+
+static int lookup(Tcl_Interp *ip, Rw *rw, const char *key, ) {
+ ht_lookup(
+
+int cht_do_cdbwr_lookup(ClientData cd, Tcl_Interp *ip, void *db,
+ const char *key, Tcl_Obj *def, Tcl_Obj **result) {