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Guard prof_active reset by opt_prof

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Set `prof_active` to read-only when `opt_prof` is turned off.
This commit is contained in:
Yinan Zhang 2019-08-27 14:42:14 -07:00
parent 1df9dd3515
commit beb7c16e94
4 changed files with 49 additions and 2 deletions
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11
include/jemalloc/internal/prof_inlines_a.h
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@ -71,8 +71,19 @@ prof_accum_cancel(tsdn_t *tsdn, prof_accum_t *prof_accum,
#endif
}
JEMALLOC_ALWAYS_INLINE void
prof_active_assert() {
cassert(config_prof);
/*
* If opt_prof is off, then prof_active must always be off, regardless
* of whether prof_active_mtx is in effect or not.
*/
assert(opt_prof || !prof_active);
}
JEMALLOC_ALWAYS_INLINE bool
prof_active_get_unlocked(void) {
prof_active_assert();
/*
* Even if opt_prof is true, sampling can be temporarily disabled by
* setting prof_active to false. No locking is used when reading