| commit | 10d417f7109802b4fd6dfde04df8be42d29894e3 | |
| author | Edwin Smith <smith@fb.com> | |
| Mon, 26 Oct 2015 23:48:17 +0000 (26 16:48 -0700) | ||
| committer | hhvm-bot <hhvm-bot@fb.com> | |
| Mon, 26 Oct 2015 23:54:44 +0000 (26 16:54 -0700) | ||
| tree | 048968c7261bd2aac7d82991fef8cd11d97ec466 | treesnapshot (tar.gz zip) |
| parent | d0d8fd9b13b567da734e0cdc53662e9fd8e5bb37 | commitdiff |
Add checkPointers() pass to checkHeap(), and add gc_check_heap()
Summary: gc_check_heap() makes it possible for PHP to invoke heap integrity checks
for debugging. no arguments and no return values, for now.
checkPointers() allows us to find bugs where the number of traced pointers
disagrees with an object's reference count. This can happen either from
incomplete tracing (gc bug) or missing inc/decref (refcounting bug). If the
count is too low, we have dangling pointers and potential crashes. If the
count is too high, we have missing pointers and potential leaks.
Reviewed By: markw65
Differential Revision: D2416471
fb-gh-sync-id: 24c28c47988773ca4c8fea0b2293c00ececf8870
Summary: gc_check_heap() makes it possible for PHP to invoke heap integrity checks
for debugging. no arguments and no return values, for now.
checkPointers() allows us to find bugs where the number of traced pointers
disagrees with an object's reference count. This can happen either from
incomplete tracing (gc bug) or missing inc/decref (refcounting bug). If the
count is too low, we have dangling pointers and potential crashes. If the
count is too high, we have missing pointers and potential leaks.
Reviewed By: markw65
Differential Revision: D2416471
fb-gh-sync-id: 24c28c47988773ca4c8fea0b2293c00ececf8870
19 files changed: