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Fix prof_realloc() regression.

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Mostly revert the prof_realloc() changes in
498856f44a (Move slabs out of chunks.) so
that prof_free_sampled_object() is called when appropriate.  Leave the
prof_tctx_[re]set() optimization in place, but add an assertion to
verify that all eight cases are correctly handled.  Add a comment to
make clear the code ordering, so that the regression originally fixed by
ea8d97b897 (Fix
prof_{malloc,free}_sample_object() call order in prof_realloc().) is not
repeated.

This resolves #499.
This commit is contained in:
Jason Evans
2017-01-16 11:09:24 -08:00
parent de5e1aff2a
commit 1ff09534b5
6 changed files with 207 additions and 55 deletions
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include/jemalloc/internal/prof_externs.h
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@@ -48,11 +48,12 @@ prof_tctx_t *prof_lookup(tsd_t *tsd, prof_bt_t *bt);
#ifdef JEMALLOC_JET
size_t prof_tdata_count(void);
size_t prof_bt_count(void);
const prof_cnt_t *prof_cnt_all(void);
typedef int (prof_dump_open_t)(bool, const char *);
extern prof_dump_open_t *prof_dump_open;
typedef bool (prof_dump_header_t)(tsdn_t *, bool, const prof_cnt_t *);
extern prof_dump_header_t *prof_dump_header;
void prof_cnt_all(uint64_t *curobjs, uint64_t *curbytes,
uint64_t *accumobjs, uint64_t *accumbytes);
#endif
void prof_idump(tsdn_t *tsdn);
bool prof_mdump(tsd_t *tsd, const char *filename);