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memleak: add backtrace to allocations.

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We use the tal notifiers to attach a `backtrace` object on every
allocation.

This also means moving backtrace_state from log.c into lightningd.c, so
we can hand it to memleak_init().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2017-12-15 20:48:54 +10:30
committed by Christian Decker
parent c956d9f5eb
commit dfc132b2fe
8 changed files with 111 additions and 20 deletions
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14
lightningd/lightningd.c
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@@ -3,6 +3,7 @@
#include "lightningd.h"
#include "peer_control.h"
#include "subd.h"
#include <backtrace.h>
#include <ccan/array_size/array_size.h>
#include <ccan/cast/cast.h>
#include <ccan/crypto/hkdf_sha256/hkdf_sha256.h>
@@ -33,6 +34,12 @@
char *bitcoin_datadir;
#if DEVELOPER
bool dev_no_backtrace;
#endif
struct backtrace_state *backtrace_state;
void db_resolve_invoice(struct lightningd *ld,
const char *label);
void db_resolve_invoice(struct lightningd *ld,
@@ -71,7 +78,7 @@ static struct lightningd *new_lightningd(const tal_t *ctx,
ld->dev_disconnect_fd = -1;
ld->dev_hsm_seed = NULL;
ld->dev_subdaemon_fail = false;
memleak_init(ld);
memleak_init(ld, backtrace_state);
#endif
list_head_init(&ld->peers);
@@ -237,6 +244,11 @@ int main(int argc, char *argv[])
err_set_progname(argv[0]);
#if DEVELOPER
if (!dev_no_backtrace)
#endif
backtrace_state = backtrace_create_state(argv[0], 0, NULL, NULL);
/* Things log on shutdown, so we need this to outlive lightningd */
log_book = new_log_book(NULL, 20*1024*1024, LOG_INFORM);
ld = new_lightningd(NULL, log_book);