Commit Graph

9 Commits

Author SHA1 Message Date
practicalswift 91a9c2923f Mark intentionally unused parameters as such (with "UNUSED") 2018-02-22 01:09:12 +00:00
practicalswift 5631054152 Start all command descriptions with a verb ("Show", "Set", etc.). Remove unused help texts. 2018-01-23 13:32:44 +01:00
practicalswift 447afa923d Avoid segfault on CLI command "dev-memleak" when $LIGHTNINGD_DEV_MEMLEAK is not set 2018-01-15 02:42:59 +00:00
Rusty Russell e695e5db09 lightningd: require explicit LIGHTNINGD_DEV_MEMLEAK env var to do memleak.
Otherwise every allocation and free is slowed down.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-12-20 12:43:10 +01:00
Christian Decker ee25547576 Re-enable builds with DEVELOPER=0
Two changes:
 - Fixed the function signature of noleak_ to match in both
   configurations
 - Added memleak.o to linker for tests

Generating the stubs for the unit tests doesn't really work since the
stubs are checked in an differ between the two configurations, so
adding memleak to the linker fixes that, by not requiring stubs to be
generated in the first place.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
2017-12-20 12:43:10 +01:00
Rusty Russell 70d01b22e1 memleak: add second exclude arg to exclude current commands' jcon.
This is not a child of cmd, since they have independent lifetimes, but
we don't want to noleak them all, since it's only the one currently in
progress (and its children) that we want to exclude.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-12-20 12:43:10 +01:00
Rusty Russell dfc132b2fe memleak: add backtrace to allocations.
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>
2017-12-20 12:43:10 +01:00
Rusty Russell c956d9f5eb lightningd: tal memleak detection, dev-memleak command.
This is a primitive mark-and-sweep-style garbage detector.  The core is
in common/ for later use by subdaemons, but for now it's just lightningd.
We initialize it before most other allocations.

We walk the tal tree to get all the pointers, then search the `ld`
object for those pointers, recursing down.  Some specific helpers are
required for hashtables (which stash bits in the unused pointer bits,
so won't be found).

There's `notleak()` for annotating things that aren't leaks: things
like globals and timers, and other semi-transients.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-12-20 12:43:10 +01:00
Rusty Russell 95df553813 lightningd: add dev-memdump command.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-12-20 12:43:10 +01:00