#include <errno.h>
#include <stdio.h>
+#include <stdbool.h>
#include <helper.h>
#include <lttng/ust-events.h>
#include <lttng/ust-context-provider.h>
#define FILTER_STACK_LEN 10 /* includes 2 dummy */
#define FILTER_STACK_EMPTY 1
+#define FILTER_MAX_DATA_LEN 65536
+
#ifndef min_t
#define min_t(type, a, b) \
((type) (a) < (type) (b) ? (type) (a) : (type) (b))
/* Linked bytecode. Child of struct lttng_bytecode_runtime. */
struct bytecode_runtime {
struct lttng_bytecode_runtime p;
+ size_t data_len;
+ size_t data_alloc_len;
+ char *data;
uint16_t len;
- char data[0];
+ char code[0];
};
enum entry_type {
REG_S64,
+ REG_U64,
REG_DOUBLE,
REG_STRING,
+ REG_STAR_GLOB_STRING,
REG_UNKNOWN,
+ REG_PTR,
+};
+
+enum load_type {
+ LOAD_ROOT_CONTEXT,
+ LOAD_ROOT_APP_CONTEXT,
+ LOAD_ROOT_PAYLOAD,
+ LOAD_OBJECT,
+};
+
+enum object_type {
+ OBJECT_TYPE_S8,
+ OBJECT_TYPE_S16,
+ OBJECT_TYPE_S32,
+ OBJECT_TYPE_S64,
+ OBJECT_TYPE_U8,
+ OBJECT_TYPE_U16,
+ OBJECT_TYPE_U32,
+ OBJECT_TYPE_U64,
+
+ OBJECT_TYPE_DOUBLE,
+ OBJECT_TYPE_STRING,
+ OBJECT_TYPE_STRING_SEQUENCE,
+
+ OBJECT_TYPE_SEQUENCE,
+ OBJECT_TYPE_ARRAY,
+ OBJECT_TYPE_STRUCT,
+ OBJECT_TYPE_VARIANT,
+
+ OBJECT_TYPE_DYNAMIC,
+};
+
+struct filter_get_index_data {
+ uint64_t offset; /* in bytes */
+ size_t ctx_index;
+ size_t array_len;
+ /*
+ * Field is only populated for LOAD_ROOT_CONTEXT, LOAD_ROOT_APP_CONTEXT
+ * and LOAD_ROOT_PAYLOAD. Left NULL for LOAD_OBJECT, considering that the
+ * interpreter needs to find it from the event fields and types to
+ * support variants.
+ */
+ const struct lttng_event_field *field;
+ struct {
+ size_t len;
+ enum object_type type;
+ bool rev_bo; /* reverse byte order */
+ } elem;
};
/* Validation stack */
+struct vstack_load {
+ enum load_type type;
+ enum object_type object_type;
+ const struct lttng_event_field *field;
+ bool rev_bo; /* reverse byte order */
+};
+
struct vstack_entry {
enum entry_type type;
+ struct vstack_load load;
};
struct vstack {
}
/* Execution stack */
+enum estack_string_literal_type {
+ ESTACK_STRING_LITERAL_TYPE_NONE,
+ ESTACK_STRING_LITERAL_TYPE_PLAIN,
+ ESTACK_STRING_LITERAL_TYPE_STAR_GLOB,
+};
+
+struct load_ptr {
+ enum load_type type;
+ enum object_type object_type;
+ const void *ptr;
+ size_t nr_elem;
+ bool rev_bo;
+ /* Temporary place-holders for contexts. */
+ union {
+ int64_t s64;
+ uint64_t u64;
+ double d;
+ } u;
+ const struct lttng_event_field *field;
+};
+
struct estack_entry {
enum entry_type type; /* For dynamic typing. */
union {
struct {
const char *str;
size_t seq_len;
- int literal; /* is string literal ? */
+ enum estack_string_literal_type literal_type;
} s;
+ struct load_ptr ptr;
} u;
};
(top)--; \
} while (0)
+enum lttng_interpreter_type {
+ LTTNG_INTERPRETER_TYPE_S64,
+ LTTNG_INTERPRETER_TYPE_U64,
+ LTTNG_INTERPRETER_TYPE_SIGNED_ENUM,
+ LTTNG_INTERPRETER_TYPE_UNSIGNED_ENUM,
+ LTTNG_INTERPRETER_TYPE_DOUBLE,
+ LTTNG_INTERPRETER_TYPE_STRING,
+ LTTNG_INTERPRETER_TYPE_SEQUENCE,
+};
+
+/*
+ * Represents the output parameter of the lttng interpreter.
+ * Currently capturable field classes are integer, double, string and sequence
+ * of integer.
+ */
+struct lttng_interpreter_output {
+ enum lttng_interpreter_type type;
+ union {
+ int64_t s;
+ uint64_t u;
+ double d;
+
+ struct {
+ const char *str;
+ size_t len;
+ } str;
+ struct {
+ const void *ptr;
+ size_t nr_elem;
+
+ /* Inner type. */
+ const struct lttng_type *nested_type;
+ } sequence;
+ } u;
+};
+
const char *print_op(enum filter_op op);
int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode);
-int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode);
+int lttng_filter_specialize_bytecode(const struct lttng_event_desc *event_desc,
+ struct bytecode_runtime *bytecode);
-uint64_t lttng_filter_false(void *filter_data,
+uint64_t lttng_filter_interpret_bytecode_false(void *filter_data,
const char *filter_stack_data);
uint64_t lttng_filter_interpret_bytecode(void *filter_data,
const char *filter_stack_data);