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Add experimental.thread.activity_callback.

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This (experimental, undocumented) functionality can be used by users to track
various statistics of interest at a finer level of granularity than the thread.
This commit is contained in:
David Goldblatt 2020-10-30 16:31:32 -07:00 • committed by David Goldblatt
parent 27ef02ca9a
commit 1b3ee75667
5 changed files with 151 additions and 3 deletions
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35
src/ctl.c
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@ -264,6 +264,7 @@ CTL_PROTO(stats_retained)
CTL_PROTO(stats_zero_reallocs)
CTL_PROTO(experimental_hooks_install)
CTL_PROTO(experimental_hooks_remove)
CTL_PROTO(experimental_thread_activity_callback)
CTL_PROTO(experimental_utilization_query)
CTL_PROTO(experimental_utilization_batch_query)
CTL_PROTO(experimental_arenas_i_pactivep)
@ -712,6 +713,11 @@ static const ctl_named_node_t experimental_hooks_node[] = {
{NAME("remove"), CTL(experimental_hooks_remove)}
};
static const ctl_named_node_t experimental_thread_node[] = {
{NAME("activity_callback"),
CTL(experimental_thread_activity_callback)}
};
static const ctl_named_node_t experimental_utilization_node[] = {
{NAME("query"), CTL(experimental_utilization_query)},
{NAME("batch_query"), CTL(experimental_utilization_batch_query)}
@ -738,7 +744,8 @@ static const ctl_named_node_t experimental_node[] = {
{NAME("utilization"), CHILD(named, experimental_utilization)},
{NAME("arenas"), CHILD(indexed, experimental_arenas)},
{NAME("prof_recent"), CHILD(named, experimental_prof_recent)},
{NAME("batch_alloc"), CTL(experimental_batch_alloc)}
{NAME("batch_alloc"), CTL(experimental_batch_alloc)},
{NAME("thread"), CHILD(named, experimental_thread)}
};
static const ctl_named_node_t root_node[] = {
@ -3428,6 +3435,32 @@ label_return:
return ret;
}
static int
experimental_thread_activity_callback_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (!config_stats) {
return ENOENT;
}
activity_callback_thunk_t t_old = tsd_activity_callback_thunk_get(tsd);
READ(t_old, activity_callback_thunk_t);
if (newp != NULL) {
/*
* This initialization is unnecessary. If it's omitted, though,
* clang gets confused and warns on the subsequent use of t_new.
*/
activity_callback_thunk_t t_new = {NULL, NULL};
WRITE(t_new, activity_callback_thunk_t);
tsd_activity_callback_thunk_set(tsd, t_new);
}
ret = 0;
label_return:
return ret;
}
/*
* Output six memory utilization entries for an input pointer, the first one of
* type (void *) and the remaining five of type size_t, describing the following