Remove prof_threshold built-in event. It is trivial to implement it as user event if needed

include/jemalloc/internal/prof_externs.h

@@ -12,8 +12,6 @@ extern bool     opt_prof_active;
 extern bool     opt_prof_thread_active_init;
 extern unsigned opt_prof_bt_max;
 extern size_t   opt_lg_prof_sample; /* Mean bytes between samples. */
-extern size_t
-    opt_experimental_lg_prof_threshold; /* Mean bytes between thresholds. */
 extern ssize_t opt_lg_prof_interval;    /* lg(prof_interval). */
 extern bool    opt_prof_gdump;          /* High-water memory dumping. */
 extern bool    opt_prof_final;          /* Final profile dumping. */
@@ -70,9 +68,6 @@ prof_sample_hook_t prof_sample_hook_get(void);
 void                    prof_sample_free_hook_set(prof_sample_free_hook_t hook);
 prof_sample_free_hook_t prof_sample_free_hook_get(void);
 
-void                  prof_threshold_hook_set(prof_threshold_hook_t hook);
-prof_threshold_hook_t prof_threshold_hook_get(void);
-
 /* Functions only accessed in prof_inlines.h */
 prof_tdata_t *prof_tdata_init(tsd_t *tsd);
 prof_tdata_t *prof_tdata_reinit(tsd_t *tsd, prof_tdata_t *tdata);

include/jemalloc/internal/prof_hook.h

@@ -27,10 +27,4 @@ typedef void (*prof_sample_hook_t)(const void *ptr, size_t size,
 /* ptr, size */
 typedef void (*prof_sample_free_hook_t)(const void *, size_t);
 
-/*
- * A callback hook that notifies when an allocation threshold has been crossed.
- */
-typedef void (*prof_threshold_hook_t)(
-    uint64_t alloc, uint64_t dealloc, uint64_t peak);
-
 #endif /* JEMALLOC_INTERNAL_PROF_HOOK_H */

include/jemalloc/internal/prof_threshold.h

@@ -1,8 +0,0 @@
-#ifndef JEMALLOC_INTERNAL_THRESHOLD_EVENT_H
-#define JEMALLOC_INTERNAL_THRESHOLD_EVENT_H
-
-#include "jemalloc/internal/tsd_types.h"
-
-extern te_base_cb_t prof_threshold_te_handler;
-
-#endif /* JEMALLOC_INTERNAL_THRESHOLD_EVENT_H */

include/jemalloc/internal/thread_event_registry.h

@@ -14,7 +14,6 @@ enum te_alloc_e {
 	te_alloc_stats_interval,
 	te_alloc_tcache_gc,
 #ifdef JEMALLOC_STATS
-	te_alloc_prof_threshold,
 	te_alloc_peak,
 #endif
 	te_alloc_user0,