Mercurial > hg > graal-compiler
changeset 11052:8cff1de240de
8017478: Kitchensink crashed with SIGSEGV in BaselineReporter::diff_callsites
Summary: Fixed possible NULL pointer that caused SIGSEGV
Reviewed-by: coleenp, acorn, ctornqvi
author | zgu |
---|---|
date | Tue, 25 Jun 2013 17:22:04 -0400 |
parents | d9eed26d638a |
children | c14867f95c60 |
files | src/share/vm/services/memReporter.cpp |
diffstat | 1 files changed, 33 insertions(+), 13 deletions(-) [+] |
line wrap: on
line diff
--- a/src/share/vm/services/memReporter.cpp Sun Jun 23 22:08:28 2013 -0700 +++ b/src/share/vm/services/memReporter.cpp Tue Jun 25 17:22:04 2013 -0400 @@ -188,8 +188,8 @@ (MallocCallsitePointer*)prev_malloc_itr.current(); while (cur_malloc_callsite != NULL || prev_malloc_callsite != NULL) { - if (prev_malloc_callsite == NULL || - cur_malloc_callsite->addr() < prev_malloc_callsite->addr()) { + if (prev_malloc_callsite == NULL) { + assert(cur_malloc_callsite != NULL, "sanity check"); // this is a new callsite _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(), amount_in_current_scale(cur_malloc_callsite->amount()), @@ -197,22 +197,42 @@ diff_in_current_scale(cur_malloc_callsite->amount(), 0), diff(cur_malloc_callsite->count(), 0)); cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next(); - } else if (cur_malloc_callsite == NULL || - cur_malloc_callsite->addr() > prev_malloc_callsite->addr()) { + } else if (cur_malloc_callsite == NULL) { + assert(prev_malloc_callsite != NULL, "Sanity check"); // this callsite is already gone _outputer.diff_malloc_callsite(prev_malloc_callsite->addr(), - amount_in_current_scale(0), 0, + 0, 0, diff_in_current_scale(0, prev_malloc_callsite->amount()), diff(0, prev_malloc_callsite->count())); prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next(); - } else { // the same callsite - _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(), - amount_in_current_scale(cur_malloc_callsite->amount()), - cur_malloc_callsite->count(), - diff_in_current_scale(cur_malloc_callsite->amount(), prev_malloc_callsite->amount()), - diff(cur_malloc_callsite->count(), prev_malloc_callsite->count())); - cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next(); - prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next(); + } else { + assert(cur_malloc_callsite != NULL, "Sanity check"); + assert(prev_malloc_callsite != NULL, "Sanity check"); + if (cur_malloc_callsite->addr() < prev_malloc_callsite->addr()) { + // this is a new callsite + _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(), + amount_in_current_scale(cur_malloc_callsite->amount()), + cur_malloc_callsite->count(), + diff_in_current_scale(cur_malloc_callsite->amount(), 0), + diff(cur_malloc_callsite->count(), 0)); + cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next(); + } else if (cur_malloc_callsite->addr() > prev_malloc_callsite->addr()) { + // this callsite is already gone + _outputer.diff_malloc_callsite(prev_malloc_callsite->addr(), + 0, 0, + diff_in_current_scale(0, prev_malloc_callsite->amount()), + diff(0, prev_malloc_callsite->count())); + prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next(); + } else { + // the same callsite + _outputer.diff_malloc_callsite(cur_malloc_callsite->addr(), + amount_in_current_scale(cur_malloc_callsite->amount()), + cur_malloc_callsite->count(), + diff_in_current_scale(cur_malloc_callsite->amount(), prev_malloc_callsite->amount()), + diff(cur_malloc_callsite->count(), prev_malloc_callsite->count())); + cur_malloc_callsite = (MallocCallsitePointer*)cur_malloc_itr.next(); + prev_malloc_callsite = (MallocCallsitePointer*)prev_malloc_itr.next(); + } } }