#include <urcu/rculist.h>
#include "lttng-filter.h"
+#include "ust-events-internal.h"
static const char *opnames[] = {
[ FILTER_OP_UNKNOWN ] = "UNKNOWN",
}
static
-int apply_field_reloc(struct lttng_event *event,
+int apply_field_reloc(const struct lttng_event_desc *event_desc,
struct bytecode_runtime *runtime,
uint32_t runtime_len,
uint32_t reloc_offset,
const char *field_name,
enum filter_op filter_op)
{
- const struct lttng_event_desc *desc;
const struct lttng_event_field *fields, *field = NULL;
unsigned int nr_fields, i;
struct load_op *op;
dbg_printf("Apply field reloc: %u %s\n", reloc_offset, field_name);
/* Lookup event by name */
- desc = event->desc;
- if (!desc)
+ if (!event_desc)
return -EINVAL;
- fields = desc->fields;
+ fields = event_desc->fields;
if (!fields)
return -EINVAL;
- nr_fields = desc->nr_fields;
+ nr_fields = event_desc->nr_fields;
for (i = 0; i < nr_fields; i++) {
if (fields[i].u.ext.nofilter) {
continue;
}
static
-int apply_context_reloc(struct lttng_event *event,
- struct bytecode_runtime *runtime,
+int apply_context_reloc(struct bytecode_runtime *runtime,
uint32_t runtime_len,
uint32_t reloc_offset,
const char *context_name,
struct load_op *op;
struct lttng_ctx_field *ctx_field;
int idx;
- struct lttng_session *session = runtime->p.session;
+ struct lttng_ctx *ctx = *runtime->p.pctx;
dbg_printf("Apply context reloc: %u %s\n", reloc_offset, context_name);
/* Get context index */
- idx = lttng_get_context_index(session->ctx, context_name);
+ idx = lttng_get_context_index(ctx, context_name);
if (idx < 0) {
if (lttng_context_is_app(context_name)) {
int ret;
ret = lttng_ust_add_app_context_to_ctx_rcu(context_name,
- &session->ctx);
+ &ctx);
if (ret)
return ret;
- idx = lttng_get_context_index(session->ctx,
- context_name);
+ idx = lttng_get_context_index(ctx, context_name);
if (idx < 0)
return -ENOENT;
} else {
return -EINVAL;
/* Get context return type */
- ctx_field = &session->ctx->fields[idx];
+ ctx_field = &ctx->fields[idx];
op = (struct load_op *) &runtime->code[reloc_offset];
switch (filter_op) {
}
static
-int apply_reloc(struct lttng_event *event,
+int apply_reloc(const struct lttng_event_desc *event_desc,
struct bytecode_runtime *runtime,
uint32_t runtime_len,
uint32_t reloc_offset,
op = (struct load_op *) &runtime->code[reloc_offset];
switch (op->op) {
case FILTER_OP_LOAD_FIELD_REF:
- return apply_field_reloc(event, runtime, runtime_len,
+ return apply_field_reloc(event_desc, runtime, runtime_len,
reloc_offset, name, op->op);
case FILTER_OP_GET_CONTEXT_REF:
- return apply_context_reloc(event, runtime, runtime_len,
+ return apply_context_reloc(runtime, runtime_len,
reloc_offset, name, op->op);
case FILTER_OP_GET_SYMBOL:
case FILTER_OP_GET_SYMBOL_FIELD:
static
int bytecode_is_linked(struct lttng_ust_filter_bytecode_node *filter_bytecode,
- struct lttng_event *event)
+ struct cds_list_head *bytecode_runtime_head)
{
struct lttng_bytecode_runtime *bc_runtime;
- cds_list_for_each_entry(bc_runtime,
- &event->bytecode_runtime_head, node) {
+ cds_list_for_each_entry(bc_runtime, bytecode_runtime_head, node) {
if (bc_runtime->bc == filter_bytecode)
return 1;
}
* bytecode runtime.
*/
static
-int _lttng_filter_event_link_bytecode(struct lttng_event *event,
+int _lttng_filter_link_bytecode(const struct lttng_event_desc *event_desc,
+ struct lttng_ctx **ctx,
struct lttng_ust_filter_bytecode_node *filter_bytecode,
struct cds_list_head *insert_loc)
{
if (!filter_bytecode)
return 0;
/* Bytecode already linked */
- if (bytecode_is_linked(filter_bytecode, event))
+ if (bytecode_is_linked(filter_bytecode, insert_loc))
return 0;
dbg_printf("Linking...\n");
goto alloc_error;
}
runtime->p.bc = filter_bytecode;
- runtime->p.session = event->chan->session;
+ runtime->p.pctx = ctx;
runtime->len = filter_bytecode->bc.reloc_offset;
/* copy original bytecode */
memcpy(runtime->code, filter_bytecode->bc.data, runtime->len);
const char *name =
(const char *) &filter_bytecode->bc.data[offset + sizeof(uint16_t)];
- ret = apply_reloc(event, runtime, runtime->len, reloc_offset, name);
+ ret = apply_reloc(event_desc, runtime, runtime->len, reloc_offset, name);
if (ret) {
goto link_error;
}
goto link_error;
}
/* Specialize bytecode */
- ret = lttng_filter_specialize_bytecode(event, runtime);
+ ret = lttng_filter_specialize_bytecode(event_desc, runtime);
if (ret) {
goto link_error;
}
return 0;
link_error:
- runtime->p.filter = lttng_filter_false;
+ runtime->p.filter = lttng_filter_interpret_bytecode_false;
runtime->p.link_failed = 1;
cds_list_add_rcu(&runtime->p.node, insert_loc);
alloc_error:
struct lttng_ust_filter_bytecode_node *bc = runtime->bc;
if (!bc->enabler->enabled || runtime->link_failed)
- runtime->filter = lttng_filter_false;
+ runtime->filter = lttng_filter_interpret_bytecode_false;
else
runtime->filter = lttng_filter_interpret_bytecode;
}
/*
- * Link bytecode for all enablers referenced by an event.
+ * Link all bytecodes of the enabler referenced in the provided bytecode list.
*/
-void lttng_enabler_event_link_bytecode(struct lttng_event *event,
+void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc,
+ struct lttng_ctx **ctx,
+ struct cds_list_head *bytecode_runtime_head,
struct lttng_enabler *enabler)
{
struct lttng_ust_filter_bytecode_node *bc;
struct lttng_bytecode_runtime *runtime;
- /* Can only be called for events with desc attached */
- assert(event->desc);
+ assert(event_desc);
/* Link each bytecode. */
cds_list_for_each_entry(bc, &enabler->filter_bytecode_head, node) {
struct cds_list_head *insert_loc;
cds_list_for_each_entry(runtime,
- &event->bytecode_runtime_head, node) {
+ bytecode_runtime_head, node) {
if (runtime->bc == bc) {
found = 1;
break;
/*
* Insert at specified priority (seqnum) in increasing
- * order.
+ * order. If there already is a bytecode of the same priority,
+ * insert the new bytecode right after it.
*/
cds_list_for_each_entry_reverse(runtime,
- &event->bytecode_runtime_head, node) {
- if (runtime->bc->bc.seqnum < bc->bc.seqnum) {
+ bytecode_runtime_head, node) {
+ if (runtime->bc->bc.seqnum <= bc->bc.seqnum) {
/* insert here */
insert_loc = &runtime->node;
goto add_within;
}
}
+
/* Add to head to list */
- insert_loc = &event->bytecode_runtime_head;
+ insert_loc = bytecode_runtime_head;
add_within:
dbg_printf("linking bytecode\n");
- ret = _lttng_filter_event_link_bytecode(event, bc,
- insert_loc);
+ ret = _lttng_filter_link_bytecode(event_desc, ctx, bc,
+ insert_loc);
if (ret) {
dbg_printf("[lttng filter] warning: cannot link event bytecode\n");
}
return 0;
}
-void lttng_free_event_filter_runtime(struct lttng_event *event)
+static
+void free_filter_runtime(struct cds_list_head *bytecode_runtime_head)
{
struct bytecode_runtime *runtime, *tmp;
- cds_list_for_each_entry_safe(runtime, tmp,
- &event->bytecode_runtime_head, p.node) {
+ cds_list_for_each_entry_safe(runtime, tmp, bytecode_runtime_head,
+ p.node) {
free(runtime->data);
free(runtime);
}
}
+
+void lttng_free_event_filter_runtime(struct lttng_event *event)
+{
+ free_filter_runtime(&event->filter_bytecode_runtime_head);
+}
+
+void lttng_free_event_notifier_filter_runtime(
+ struct lttng_event_notifier *event_notifier)
+{
+ free_filter_runtime(&event_notifier->filter_bytecode_runtime_head);
+}
projects / lttng-ust.git / blobdiff