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Implement circuitmux_detach_all_circuits() in circuitmux.c

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This commit is contained in:
Andrea Shepard 2012-09-26 13:38:32 -07:00
parent 9da04141e2
commit fd31dd440c
1 changed files with 69 additions and 0 deletions
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69
src/or/circuitmux.c
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@ -8,6 +8,7 @@
#include "or.h"
#include "channel.h"
#include "circuitlist.h"
#include "circuitmux.h"
/*
@ -197,6 +198,74 @@ circuitmux_alloc(void)
return rv;
}
/**
* Detach all circuits from a circuitmux (use before circuitmux_free())
*/
void
circuitmux_detach_all_circuits(circuitmux_t *cmux)
{
chanid_circid_muxinfo_t **i = NULL, *to_remove;
channel_t *chan = NULL;
circuit_t *circ = NULL;
tor_assert(cmux);
i = HT_START(chanid_circid_muxinfo_map, cmux->chanid_circid_map);
while (i) {
to_remove = *i;
i = HT_NEXT_RMV(chanid_circid_muxinfo_map, cmux->chanid_circid_map, i);
if (to_remove) {
/* Find a channel and circuit */
chan = channel_find_by_global_id(to_remove->chan_id);
if (chan) {
circ = circuit_get_by_circid_channel(to_remove->circ_id, chan);
if (circ) {
/* Clear the circuit's mux for this direction */
if (to_remove->muxinfo.direction == CELL_DIRECTION_OUT) {
/* Clear n_mux */
circ->n_mux = NULL;
} else if (circ->magic == OR_CIRCUIT_MAGIC) {
/*
* It has a sensible p_chan and direction == CELL_DIRECTION_IN,
* so clear p_mux.
*/
TO_OR_CIRCUIT(circ)->p_mux = NULL;
} else {
/* Complain and move on */
log_warn(LD_CIRC,
"Circuit %d/channel " U64_FORMAT " had direction == "
"CELL_DIRECTION_IN, but isn't an or_circuit_t",
to_remove->circ_id,
U64_PRINTF_ARG(to_remove->chan_id));
}
/* TODO update active_circuits / active_circuit_pqueue */
} else {
/* Complain and move on */
log_warn(LD_CIRC,
"Couldn't find circuit %d (for channel " U64_FORMAT ")",
to_remove->circ_id,
U64_PRINTF_ARG(to_remove->chan_id));
}
} else {
/* Complain and move on */
log_warn(LD_CIRC,
"Couldn't find channel " U64_FORMAT " (for circuit id %d)",
U64_PRINTF_ARG(to_remove->chan_id),
to_remove->circ_id);
}
/* Free it */
tor_free(to_remove);
}
}
cmux->n_circuits = 0;
cmux->n_active_circuits = 0;
cmux->n_cells = 0;
}
/**
* Free a circuitmux_t; the circuits must be detached first with
* circuitmux_detach_all_circuits().