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@@ -9,6 +9,9 @@
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#define SCHEDULER_KIST_PRIVATE
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#include "scheduler.h"
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#include "main.h"
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+#include "buffers.h"
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+#define TOR_CHANNEL_INTERNAL_
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+#include "channeltls.h"
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#include <event2/event.h>
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@@ -667,6 +670,32 @@ scheduler_channel_wants_writes(channel_t *chan)
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}
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}
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+/* Log warn the given channel and extra scheduler context as well. This is
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+ * used by SCHED_BUG() in order to be able to extract as much information as
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+ * we can when we hit a bug. Channel chan can be NULL. */
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+void
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+scheduler_bug_occurred(const channel_t *chan)
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+{
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+ char buf[128];
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+
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+ if (chan != NULL) {
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+ const size_t outbuf_len =
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+ buf_datalen(TO_CONN(BASE_CHAN_TO_TLS((channel_t *) chan)->conn)->outbuf);
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+ tor_snprintf(buf, sizeof(buf),
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+ "Channel %" PRIu64 " in state %s and scheduler state %d."
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+ " Num cells on cmux: %d. Connection outbuf len: %lu.",
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+ chan->global_identifier,
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+ channel_state_to_string(chan->state),
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+ chan->scheduler_state, circuitmux_num_cells(chan->cmux),
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+ outbuf_len);
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+ }
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+
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+ log_warn(LD_BUG, "%s Num pending channels: %d. Channel in pending list: %s",
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+ (chan != NULL) ? buf : "No channel in bug context.",
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+ smartlist_len(channels_pending),
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+ (smartlist_pos(channels_pending, chan) == -1) ? "no" : "yes");
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+}
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+
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#ifdef TOR_UNIT_TESTS
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/*
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