X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fcondition-internal.c;fp=src%2Fbin%2Flttng-sessiond%2Fcondition-internal.c;h=43c214c2c07122e1a0dd341a95933987a33adbd8;hp=0000000000000000000000000000000000000000;hb=2463b7879c00298daa79744cdaae82ac061a4ed8;hpb=3a4595c2469472dee1656cde5f8882c2123efd3c

diff --git a/src/bin/lttng-sessiond/condition-internal.c b/src/bin/lttng-sessiond/condition-internal.c
new file mode 100644
index 000000000..43c214c2c
--- /dev/null
+++ b/src/bin/lttng-sessiond/condition-internal.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <common/hashtable/utils.h>
+#include <common/hashtable/hashtable.h>
+
+#include <lttng/condition/condition.h>
+#include <lttng/condition/condition-internal.h>
+#include <lttng/condition/buffer-usage-internal.h>
+#include <lttng/condition/session-consumed-size-internal.h>
+#include <lttng/condition/session-rotation-internal.h>
+#include <lttng/condition/event-rule-internal.h>
+#include "condition-internal.h"
+
+static
+unsigned long lttng_condition_buffer_usage_hash(
+	const struct lttng_condition *_condition)
+{
+	unsigned long hash;
+	unsigned long condition_type;
+	struct lttng_condition_buffer_usage *condition;
+
+	condition = container_of(_condition,
+			struct lttng_condition_buffer_usage, parent);
+
+	condition_type = (unsigned long) condition->parent.type;
+	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
+	if (condition->session_name) {
+		hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
+	}
+	if (condition->channel_name) {
+		hash ^= hash_key_str(condition->channel_name, lttng_ht_seed);
+	}
+	if (condition->domain.set) {
+		hash ^= hash_key_ulong(
+				(void *) condition->domain.type,
+				lttng_ht_seed);
+	}
+	if (condition->threshold_ratio.set) {
+		uint64_t val;
+
+		val = condition->threshold_ratio.value * (double) UINT32_MAX;
+		hash ^= hash_key_u64(&val, lttng_ht_seed);
+	} else if (condition->threshold_bytes.set) {
+		uint64_t val;
+
+		val = condition->threshold_bytes.value;
+		hash ^= hash_key_u64(&val, lttng_ht_seed);
+	}
+	return hash;
+}
+
+static
+unsigned long lttng_condition_session_consumed_size_hash(
+	const struct lttng_condition *_condition)
+{
+	unsigned long hash;
+	unsigned long condition_type =
+			(unsigned long) LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE;
+	struct lttng_condition_session_consumed_size *condition;
+	uint64_t val;
+
+	condition = container_of(_condition,
+			struct lttng_condition_session_consumed_size, parent);
+
+	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
+	if (condition->session_name) {
+		hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
+	}
+	val = condition->consumed_threshold_bytes.value;
+	hash ^= hash_key_u64(&val, lttng_ht_seed);
+	return hash;
+}
+
+static
+unsigned long lttng_condition_session_rotation_hash(
+	const struct lttng_condition *_condition)
+{
+	unsigned long hash, condition_type;
+	struct lttng_condition_session_rotation *condition;
+
+	condition = container_of(_condition,
+			struct lttng_condition_session_rotation, parent);
+	condition_type = (unsigned long) condition->parent.type;
+	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
+	assert(condition->session_name);
+	hash ^= hash_key_str(condition->session_name, lttng_ht_seed);
+	return hash;
+}
+
+static
+unsigned long lttng_condition_event_rule_hash(
+	const struct lttng_condition *_condition)
+{
+	unsigned long hash, condition_type;
+	struct lttng_condition_event_rule *condition;
+
+	condition = container_of(_condition,
+			struct lttng_condition_event_rule, parent);
+	condition_type = (unsigned long) condition->parent.type;
+	hash = hash_key_ulong((void *) condition_type, lttng_ht_seed);
+
+	/* TODO: further hasg using the event rule? on pattern maybe?*/
+	return hash;
+}
+
+/*
+ * The lttng_condition hashing code is kept in this file (rather than
+ * condition.c) since it makes use of GPLv2 code (hashtable utils), which we
+ * don't want to link in liblttng-ctl.
+ */
+unsigned long lttng_condition_hash(const struct lttng_condition *condition)
+{
+	switch (condition->type) {
+	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+	case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+		return lttng_condition_buffer_usage_hash(condition);
+	case LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE:
+		return lttng_condition_session_consumed_size_hash(condition);
+	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING:
+	case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED:
+		return lttng_condition_session_rotation_hash(condition);
+	case LTTNG_CONDITION_TYPE_EVENT_RULE_HIT:
+		return lttng_condition_event_rule_hash(condition);
+	default:
+		//ERR("[notification-thread] Unexpected condition type caught");
+		abort();
+	}
+}