diff --git a/include/jemalloc/internal/prof_externs.h b/include/jemalloc/internal/prof_externs.h
index d500f560..3d9fcfb8 100644
--- a/include/jemalloc/internal/prof_externs.h
+++ b/include/jemalloc/internal/prof_externs.h
@@ -102,7 +102,7 @@ void prof_postfork_child(tsdn_t *tsdn);
 /* Only accessed by thread event. */
 uint64_t prof_sample_new_event_wait(tsd_t *tsd);
 uint64_t prof_sample_postponed_event_wait(tsd_t *tsd);
-bool prof_idump_accum(tsdn_t *tsdn, uint64_t accumbytes);
+void prof_sample_event_handler(tsd_t *tsd, uint64_t elapsed);
 
 bool prof_log_start(tsdn_t *tsdn, const char *filename);
 bool prof_log_stop(tsdn_t *tsdn);
diff --git a/include/jemalloc/internal/stats.h b/include/jemalloc/internal/stats.h
index 4989fe1a..93bde22e 100644
--- a/include/jemalloc/internal/stats.h
+++ b/include/jemalloc/internal/stats.h
@@ -40,7 +40,7 @@ extern char opt_stats_interval_opts[stats_print_tot_num_options+1];
 /* Only accessed by thread event. */
 uint64_t stats_interval_new_event_wait(tsd_t *tsd);
 uint64_t stats_interval_postponed_event_wait(tsd_t *tsd);
-bool stats_interval_accum(tsd_t *tsd, uint64_t bytes);
+void stats_interval_event_handler(tsd_t *tsd, uint64_t elapsed);
 
 /* Implements je_malloc_stats_print. */
 void stats_print(write_cb_t *write_cb, void *cbopaque, const char *opts);
diff --git a/include/jemalloc/internal/tcache_externs.h b/include/jemalloc/internal/tcache_externs.h
index 3be65286..6eca928c 100644
--- a/include/jemalloc/internal/tcache_externs.h
+++ b/include/jemalloc/internal/tcache_externs.h
@@ -56,9 +56,9 @@ void tcache_assert_initialized(tcache_t *tcache);
 /* Only accessed by thread event. */
 uint64_t tcache_gc_new_event_wait(tsd_t *tsd);
 uint64_t tcache_gc_postponed_event_wait(tsd_t *tsd);
+void tcache_gc_event_handler(tsd_t *tsd, uint64_t elapsed);
 uint64_t tcache_gc_dalloc_new_event_wait(tsd_t *tsd);
 uint64_t tcache_gc_dalloc_postponed_event_wait(tsd_t *tsd);
-void tcache_event_hard(tsd_t *tsd, tcache_slow_t *tcache_slow,
-    tcache_t *tcache);
+void tcache_gc_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed);
 
 #endif /* JEMALLOC_INTERNAL_TCACHE_EXTERNS_H */
diff --git a/include/jemalloc/internal/thread_event.h b/include/jemalloc/internal/thread_event.h
index 321baaac..3a848829 100644
--- a/include/jemalloc/internal/thread_event.h
+++ b/include/jemalloc/internal/thread_event.h
@@ -23,6 +23,12 @@
  */
 #define TE_MAX_INTERVAL ((uint64_t)(4U << 20))
 
+/*
+ * Invalid elapsed time, for situations where elapsed time is not needed.  See
+ * comments in thread_event.c for more info.
+ */
+#define TE_INVALID_ELAPSED UINT64_MAX
+
 typedef struct te_ctx_s {
 	bool is_alloc;
 	uint64_t *current;
diff --git a/src/prof.c b/src/prof.c
index 77aa44d4..c8da81da 100644
--- a/src/prof.c
+++ b/src/prof.c
@@ -50,7 +50,7 @@ bool opt_prof_accum = false;
 char opt_prof_prefix[PROF_DUMP_FILENAME_LEN];
 bool opt_prof_experimental_use_sys_thread_name = false;
 
-/* Accessed via prof_idump_accum(). */
+/* Accessed via prof_sample_event_handler(). */
 static counter_accum_t prof_idump_accumulated;
 
 /*
@@ -574,6 +574,18 @@ prof_sample_postponed_event_wait(tsd_t *tsd) {
 	return prof_sample_new_event_wait(tsd);
 }
 
+void
+prof_sample_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	cassert(config_prof);
+	assert(elapsed > 0 && elapsed != TE_INVALID_ELAPSED);
+	if (prof_interval == 0 || !prof_active_get_unlocked()) {
+		return;
+	}
+	if (counter_accum(tsd_tsdn(tsd), &prof_idump_accumulated, elapsed)) {
+		prof_idump(tsd_tsdn(tsd));
+	}
+}
+
 int
 prof_getpid(void) {
 #ifdef _WIN32
@@ -658,17 +670,6 @@ prof_idump_accum_init(void) {
 	return counter_accum_init(&prof_idump_accumulated, prof_interval);
 }
 
-bool
-prof_idump_accum(tsdn_t *tsdn, uint64_t accumbytes) {
-	cassert(config_prof);
-
-	if (prof_interval == 0 || !prof_active_get_unlocked()) {
-		return false;
-	}
-
-	return counter_accum(tsdn, &prof_idump_accumulated, accumbytes);
-}
-
 bool
 prof_dump_prefix_set(tsdn_t *tsdn, const char *prefix) {
 	cassert(config_prof);
diff --git a/src/stats.c b/src/stats.c
index 16d4e88e..42e4a1ca 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -1493,11 +1493,6 @@ stats_print(write_cb_t *write_cb, void *cbopaque, const char *opts) {
 	emitter_end(&emitter);
 }
 
-bool
-stats_interval_accum(tsd_t *tsd, uint64_t bytes) {
-	return counter_accum(tsd_tsdn(tsd), &stats_interval_accumulated, bytes);
-}
-
 uint64_t
 stats_interval_new_event_wait(tsd_t *tsd) {
 	return stats_interval_accum_batch;
@@ -1508,6 +1503,15 @@ stats_interval_postponed_event_wait(tsd_t *tsd) {
 	return TE_MIN_START_WAIT;
 }
 
+void
+stats_interval_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	assert(elapsed > 0 && elapsed != TE_INVALID_ELAPSED);
+	if (counter_accum(tsd_tsdn(tsd), &stats_interval_accumulated,
+	    elapsed)) {
+		je_malloc_stats_print(NULL, NULL, opt_stats_interval_opts);
+	}
+}
+
 bool
 stats_boot(void) {
 	uint64_t stats_interval;
diff --git a/src/tcache.c b/src/tcache.c
index 16c87cb0..f8188cb8 100644
--- a/src/tcache.c
+++ b/src/tcache.c
@@ -60,8 +60,14 @@ tcache_gc_dalloc_postponed_event_wait(tsd_t *tsd) {
 	return TE_MIN_START_WAIT;
 }
 
-void
-tcache_event_hard(tsd_t *tsd, tcache_slow_t *tcache_slow, tcache_t *tcache) {
+static void
+tcache_event(tsd_t *tsd) {
+	tcache_t *tcache = tcache_get(tsd);
+	if (tcache == NULL) {
+		return;
+	}
+
+	tcache_slow_t *tcache_slow = tsd_tcache_slowp_get(tsd);
 	szind_t binind = tcache_slow->next_gc_bin;
 	bool is_small = (binind < SC_NBINS);
 	cache_bin_t *cache_bin = &tcache->bins[binind];
@@ -110,6 +116,18 @@ tcache_event_hard(tsd_t *tsd, tcache_slow_t *tcache_slow, tcache_t *tcache) {
 	}
 }
 
+void
+tcache_gc_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	assert(elapsed == TE_INVALID_ELAPSED);
+	tcache_event(tsd);
+}
+
+void
+tcache_gc_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	assert(elapsed == TE_INVALID_ELAPSED);
+	tcache_event(tsd);
+}
+
 void *
 tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena,
     tcache_t *tcache, cache_bin_t *cache_bin, szind_t binind,
diff --git a/src/thread_event.c b/src/thread_event.c
index 9de8376d..40c0487e 100644
--- a/src/thread_event.c
+++ b/src/thread_event.c
@@ -5,68 +5,59 @@
 #include "jemalloc/internal/thread_event.h"
 
 /*
- * Signatures for functions computing new / postponed event wait time.  New
+ * Signatures for event specific functions.  These functions should be defined
+ * by the modules owning each event.  The signatures here verify that the
+ * definitions follow the right format.
+ *
+ * The first two are functions computing new / postponed event wait time.  New
  * event wait time is the time till the next event if an event is currently
  * being triggered; postponed event wait time is the time till the next event
  * if an event should be triggered but needs to be postponed, e.g. when the TSD
  * is not nominal or during reentrancy.
  *
- * These event wait time computation functions should be defined by the modules
- * owning each event.  The signatures here are used to verify that the
- * definitions follow the right format.
+ * The third is the event handler function, which is called whenever an event
+ * is triggered.  The parameter is the elapsed time since the last time an
+ * event of the same type was triggered.
  */
 #define E(event, condition_unused, is_alloc_event_unused)		\
 uint64_t event##_new_event_wait(tsd_t *tsd);				\
-uint64_t event##_postponed_event_wait(tsd_t *tsd);
+uint64_t event##_postponed_event_wait(tsd_t *tsd);			\
+void event##_event_handler(tsd_t *tsd, uint64_t elapsed);
 
 ITERATE_OVER_ALL_EVENTS
 #undef E
 
-/* Event handler function signatures. */
+/* Signatures for internal functions fetching elapsed time. */
 #define E(event, condition_unused, is_alloc_event_unused)		\
-static void event##_event_handler(tsd_t *tsd);
+static uint64_t event##_fetch_elapsed(tsd_t *tsd);
 
 ITERATE_OVER_ALL_EVENTS
 #undef E
 
-/* Handler functions. */
-static void
-tcache_gc_event(tsd_t *tsd) {
-	tcache_t *tcache = tcache_get(tsd);
-	if (tcache != NULL) {
-		tcache_slow_t *tcache_slow = tsd_tcache_slowp_get(tsd);
-		tcache_event_hard(tsd, tcache_slow, tcache);
-	}
+static uint64_t
+tcache_gc_fetch_elapsed(tsd_t *tsd) {
+	return TE_INVALID_ELAPSED;
 }
 
-static void
-tcache_gc_event_handler(tsd_t *tsd) {
-	tcache_gc_event(tsd);
+static uint64_t
+tcache_gc_dalloc_fetch_elapsed(tsd_t *tsd) {
+	return TE_INVALID_ELAPSED;
 }
 
-static void
-tcache_gc_dalloc_event_handler(tsd_t *tsd) {
-	tcache_gc_event(tsd);
-}
-
-static void
-prof_sample_event_handler(tsd_t *tsd) {
+static uint64_t
+prof_sample_fetch_elapsed(tsd_t *tsd) {
 	uint64_t last_event = thread_allocated_last_event_get(tsd);
 	uint64_t last_sample_event = prof_sample_last_event_get(tsd);
 	prof_sample_last_event_set(tsd, last_event);
-	if (prof_idump_accum(tsd_tsdn(tsd), last_event - last_sample_event)) {
-		prof_idump(tsd_tsdn(tsd));
-	}
+	return last_event - last_sample_event;
 }
 
-static void
-stats_interval_event_handler(tsd_t *tsd) {
+static uint64_t
+stats_interval_fetch_elapsed(tsd_t *tsd) {
 	uint64_t last_event = thread_allocated_last_event_get(tsd);
 	uint64_t last_stats_event = stats_interval_last_event_get(tsd);
 	stats_interval_last_event_set(tsd, last_event);
-	if (stats_interval_accum(tsd, last_event - last_stats_event)) {
-		je_malloc_stats_print(NULL, NULL, opt_stats_interval_opts);
-	}
+	return last_event - last_stats_event;
 }
 
 /* Per event facilities done. */
@@ -286,7 +277,8 @@ te_event_trigger(tsd_t *tsd, te_ctx_t *ctx) {
 	if (is_alloc == alloc_event && condition &&			\
 	    is_##event##_triggered) {					\
 		assert(allow_event_trigger);				\
-		event##_event_handler(tsd);				\
+		uint64_t elapsed = event##_fetch_elapsed(tsd);		\
+		event##_event_handler(tsd, elapsed);			\
 	}
 
 	ITERATE_OVER_ALL_EVENTS