We make new_routing_channel() populate both connections
(active=false), so local_add_channel becomes simpler. We also
suppress listchannels output of active=false unannounced channels, to
avoid breaking tests (also, these are unusable, so it makes sense to
omit them)
It also seems the logic in add_channel_direction is legacy: a
channel_announce cannot replace the scid (that would be a different
channel), we don't allow duplicate announcements, and the announcement
is never NULL.
And since we disallow repeated channel_announce already, I believe
'forward' is always true, greatly simplifying the logic in
handle_pending_cannouncement.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This makes 'routing_channel' the primary object in the system; it can have
one or two 'node_connection's attached, and points to two nodes.
The nodes are freed when no more routing_channel refer to them. The
routing_channel are freed when they contain no more 'node_connection'.
This fixes#1072 which I surmise was caused by a dangling
routing_channel after pruning.
Each node contains a single array of 'routing_channel's, not one for
each direction. The 'routing_channel' itself orders nodes in key
order (conveniently the index is equal to the direction flag we use),
and 'node_connection' with source in the same order.
There are helpers to assist with common questions like "which
'node_connection' leads out of this node?".
There are now two ways to find a channel:
1. Direct scid lookup via rstate->channels map.
2. Node key lookup, followed by channel traversal.
Several FIXMEs are inserted for where we can now do things more optimally.
Fixes: #1072
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We always hand in "NULL" (which means use tal_len on the msg), except
for two places which do that manually for no good reason.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now we have wirestring, this is much more natural. And with the
24M length limit, we needn't be so concerned about dumping 64k peer
messages in hex.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The use of status_failed() requires a stubs update, which fails
with unnamed parameters, so tweak the status.h header as well.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We should never be evicting channel_announcements because a) they were
deeply buried and should not change the short_channel_id/tag, b) they
are static.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
It's just a sha256_double, but importantly when we convert it to a
string (in type_to_string, which is used in logging) we use
bitcoin_blkid_to_hex() so it's reversed as people expect.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If channel_announce is rebroadcast, it should replace the existing one
in-place. We currently only do this if we start from the unsigned one
and replace it with the signed one when we hit 6 confirms.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This would fail, and we'd free an uninitialized pointer.
Also, add us to .gitignore and clear up a comment.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We can't get them; channel_update doesn't support it.
# 1M nodes:
$ /gossipd/test/run-bench-find_route 1000000 1 > /tmp/out
=> 47677 msec
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Compile this, and link from perfme-start and perfme-stop in your path:
/* Simple wrapper to allow a program to perf itself.
* Copyright Rusty Russell, Blockstream 2015.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* See <http://www.gnu.org/licenses/>.
*/
#include <ccan/err/err.h>
#include <ccan/str/str.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#define PERFME_PREFIX "/tmp/perfme."
#define MAX_ENV_ARGS 20
static void write_noerr(int fd)
{
int e = errno;
if (write(fd, "", 1) != 1)
/* Complain about warn_unused_result fascist bullshit */ ;
errno = e;
}
/* Child. Setup pid, run perf. */
static void exec_perf(int pfd[2], const char *perfpid, const char *perfout,
pid_t parent)
{
char pid[STR_MAX_CHARS(pid_t)];
int i, fd;
char *cmd, *args[MAX_ENV_ARGS + 5];
fd = open(perfpid, O_CREAT|O_EXCL|O_WRONLY, 0400);
if (fd < 0) {
write_noerr(pfd[1]);
err(1, "opening %s", perfpid);
}
sprintf(pid, "%u", getpid());
if (write(fd, pid, strlen(pid)) != strlen(pid)) {
write_noerr(pfd[1]);
err(1, "writing to %s", perfpid);
}
close(fd);
sprintf(pid, "%u", parent);
cmd = getenv("PERFME");
if (!cmd)
cmd = "perf record --call-graph dwarf -q";
cmd = strdup(cmd);
for (i = 0; i < MAX_ENV_ARGS; i++) {
args[i] = strtok(i == 0 ? cmd : NULL, " ");
if (!args[i])
break;
}
if (i == 0 || i == MAX_ENV_ARGS)
errx(1, "Too %s args in $PERFME: '%s'",
i ? "many" : "few", getenv("PERFME"));
args[i++] = "-p";
args[i++] = pid;
args[i++] = "-o";
args[i++] = (char *)perfout;
args[i++] = NULL;
execvp(args[0], args);
write_noerr(pfd[1]);
err(1, "Execing %s", args[0]);
}
int main(int argc, char *argv[])
{
pid_t parent = argv[1] ? atoi(argv[1]) : getppid();
char perfout[sizeof(PERFME_PREFIX) + STR_MAX_CHARS(parent)];
char perfpid[sizeof(perfout) + sizeof(".pid")];
err_set_progname(argv[0]);
sprintf(perfpid, PERFME_PREFIX "%u.pid", parent);
if (strends(argv[0], "perfme-stop")) {
char pid[STR_MAX_CHARS(pid_t)];
int r, fd = open(perfpid, O_RDONLY);
if (fd < 0)
err(1, "Opening %s", perfpid);
r = read(fd, pid, sizeof(pid) - 1);
if (r < 0)
err(1, "Reading %s", perfpid);
pid[r] = 0;
if (unlink(perfpid) != 0)
warn("Unlinking %s", perfpid);
if (atoi(pid) <= 0)
errx(1, "Invalid pid '%s' from %s", pid, perfpid);
if (kill(atoi(pid), SIGTERM) != 0)
err(1, "Stopping %s", pid);
exit(0);
} else if (strends(argv[0], "perfme-start")) {
int pfd[2];
sprintf(perfout, PERFME_PREFIX "%u", parent);
/* Use pipe to detect successful exec. */
if (pipe(pfd) != 0)
err(1, "Creating pipe");
switch (fork()) {
case 0:
close(pfd[0]);
fcntl(pfd[1], F_SETFD,
fcntl(pfd[1], F_GETFD)|FD_CLOEXEC);
exec_perf(pfd, perfpid, perfout, parent);
case -1:
err(1, "Forking");
default:
/* Parent. Wait for child. */
close(pfd[1]);
if (read(pfd[0], perfpid, 1) == 1)
exit(1);
fprintf(stderr, "Perf recording into %s\n", perfout);
sleep(1);
exit(0);
}
}
errx(1, "Unknown name: am I perfme-start or perfme-stop?");
}
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
