src/Makefile
src/common/Makefile
src/common/argpar/Makefile
+ src/common/bytecode/Makefile
src/common/kernel-ctl/Makefile
src/common/kernel-consumer/Makefile
src/common/consumer/Makefile
SUBDIRS = \
string-utils \
+ bytecode \
filter \
argpar
consumer \
string-utils \
fd-tracker \
+ bytecode \
filter \
argpar
endif
libcommon_la_LIBADD = \
+ $(top_builddir)/src/common/bytecode/libbytecode.la \
$(top_builddir)/src/common/config/libconfig.la \
$(top_builddir)/src/common/compat/libcompat.la \
$(top_builddir)/src/common/hashtable/libhashtable.la \
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+
+noinst_LTLIBRARIES = libbytecode.la
+
+libbytecode_la_SOURCES = \
+ bytecode.c bytecode.h
--- /dev/null
+/*
+ * Copyright 2020 EfficiOS, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#include "bytecode.h"
+
+#include <errno.h>
+
+#include "common/align.h"
+
+#define INIT_ALLOC_SIZE 4
+
+static inline int get_count_order(unsigned int count)
+{
+ int order;
+
+ order = lttng_fls(count) - 1;
+ if (count & (count - 1))
+ order++;
+ return order;
+}
+
+LTTNG_HIDDEN
+int bytecode_init(struct lttng_filter_bytecode_alloc **fb)
+{
+ uint32_t alloc_len;
+
+ alloc_len = sizeof(struct lttng_filter_bytecode_alloc) + INIT_ALLOC_SIZE;
+ *fb = calloc(alloc_len, 1);
+ if (!*fb) {
+ return -ENOMEM;
+ } else {
+ (*fb)->alloc_len = alloc_len;
+ return 0;
+ }
+}
+
+LTTNG_HIDDEN
+int32_t bytecode_reserve(struct lttng_filter_bytecode_alloc **fb, uint32_t align, uint32_t len)
+{
+ int32_t ret;
+ uint32_t padding = offset_align((*fb)->b.len, align);
+ uint32_t new_len = (*fb)->b.len + padding + len;
+ uint32_t new_alloc_len = sizeof(struct lttng_filter_bytecode_alloc) + new_len;
+ uint32_t old_alloc_len = (*fb)->alloc_len;
+
+ if (new_len > LTTNG_FILTER_MAX_LEN)
+ return -EINVAL;
+
+ if (new_alloc_len > old_alloc_len) {
+ struct lttng_filter_bytecode_alloc *newptr;
+
+ new_alloc_len =
+ max_t(uint32_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1);
+ newptr = realloc(*fb, new_alloc_len);
+ if (!newptr)
+ return -ENOMEM;
+ *fb = newptr;
+ /* We zero directly the memory from start of allocation. */
+ memset(&((char *) *fb)[old_alloc_len], 0, new_alloc_len - old_alloc_len);
+ (*fb)->alloc_len = new_alloc_len;
+ }
+ (*fb)->b.len += padding;
+ ret = (*fb)->b.len;
+ (*fb)->b.len += len;
+ return ret;
+}
+
+LTTNG_HIDDEN
+int bytecode_push(struct lttng_filter_bytecode_alloc **fb, const void *data,
+ uint32_t align, uint32_t len)
+{
+ int32_t offset;
+
+ offset = bytecode_reserve(fb, align, len);
+ if (offset < 0)
+ return offset;
+ memcpy(&(*fb)->b.data[offset], data, len);
+ return 0;
+}
+
+LTTNG_HIDDEN
+int bytecode_push_logical(struct lttng_filter_bytecode_alloc **fb,
+ struct logical_op *data,
+ uint32_t align, uint32_t len,
+ uint16_t *skip_offset)
+{
+ int32_t offset;
+
+ offset = bytecode_reserve(fb, align, len);
+ if (offset < 0)
+ return offset;
+ memcpy(&(*fb)->b.data[offset], data, len);
+ *skip_offset =
+ (void *) &((struct logical_op *) &(*fb)->b.data[offset])->skip_offset
+ - (void *) &(*fb)->b.data[0];
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright 2020 EfficiOS, Inc.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_COMMON_BYTECODE_H
+#define LTTNG_COMMON_BYTECODE_H
+
+#include <stdint.h>
+
+#include "common/macros.h"
+#include "common/sessiond-comm/sessiond-comm.h"
+
+/*
+ * offsets are absolute from start of bytecode.
+ */
+
+struct field_ref {
+ /* Initially, symbol offset. After link, field offset. */
+ uint16_t offset;
+} LTTNG_PACKED;
+
+struct get_symbol {
+ /* Symbol offset. */
+ uint16_t offset;
+} LTTNG_PACKED;
+
+struct get_index_u16 {
+ uint16_t index;
+} LTTNG_PACKED;
+
+struct get_index_u64 {
+ uint64_t index;
+} LTTNG_PACKED;
+
+struct literal_numeric {
+ int64_t v;
+} LTTNG_PACKED;
+
+struct literal_double {
+ double v;
+} LTTNG_PACKED;
+
+struct literal_string {
+ char string[0];
+} LTTNG_PACKED;
+
+enum filter_op {
+ FILTER_OP_UNKNOWN = 0,
+
+ FILTER_OP_RETURN = 1,
+
+ /* binary */
+ FILTER_OP_MUL = 2,
+ FILTER_OP_DIV = 3,
+ FILTER_OP_MOD = 4,
+ FILTER_OP_PLUS = 5,
+ FILTER_OP_MINUS = 6,
+ FILTER_OP_BIT_RSHIFT = 7,
+ FILTER_OP_BIT_LSHIFT = 8,
+ FILTER_OP_BIT_AND = 9,
+ FILTER_OP_BIT_OR = 10,
+ FILTER_OP_BIT_XOR = 11,
+
+ /* binary comparators */
+ FILTER_OP_EQ = 12,
+ FILTER_OP_NE = 13,
+ FILTER_OP_GT = 14,
+ FILTER_OP_LT = 15,
+ FILTER_OP_GE = 16,
+ FILTER_OP_LE = 17,
+
+ /* string binary comparator: apply to */
+ FILTER_OP_EQ_STRING = 18,
+ FILTER_OP_NE_STRING = 19,
+ FILTER_OP_GT_STRING = 20,
+ FILTER_OP_LT_STRING = 21,
+ FILTER_OP_GE_STRING = 22,
+ FILTER_OP_LE_STRING = 23,
+
+ /* s64 binary comparator */
+ FILTER_OP_EQ_S64 = 24,
+ FILTER_OP_NE_S64 = 25,
+ FILTER_OP_GT_S64 = 26,
+ FILTER_OP_LT_S64 = 27,
+ FILTER_OP_GE_S64 = 28,
+ FILTER_OP_LE_S64 = 29,
+
+ /* double binary comparator */
+ FILTER_OP_EQ_DOUBLE = 30,
+ FILTER_OP_NE_DOUBLE = 31,
+ FILTER_OP_GT_DOUBLE = 32,
+ FILTER_OP_LT_DOUBLE = 33,
+ FILTER_OP_GE_DOUBLE = 34,
+ FILTER_OP_LE_DOUBLE = 35,
+
+ /* Mixed S64-double binary comparators */
+ FILTER_OP_EQ_DOUBLE_S64 = 36,
+ FILTER_OP_NE_DOUBLE_S64 = 37,
+ FILTER_OP_GT_DOUBLE_S64 = 38,
+ FILTER_OP_LT_DOUBLE_S64 = 39,
+ FILTER_OP_GE_DOUBLE_S64 = 40,
+ FILTER_OP_LE_DOUBLE_S64 = 41,
+
+ FILTER_OP_EQ_S64_DOUBLE = 42,
+ FILTER_OP_NE_S64_DOUBLE = 43,
+ FILTER_OP_GT_S64_DOUBLE = 44,
+ FILTER_OP_LT_S64_DOUBLE = 45,
+ FILTER_OP_GE_S64_DOUBLE = 46,
+ FILTER_OP_LE_S64_DOUBLE = 47,
+
+ /* unary */
+ FILTER_OP_UNARY_PLUS = 48,
+ FILTER_OP_UNARY_MINUS = 49,
+ FILTER_OP_UNARY_NOT = 50,
+ FILTER_OP_UNARY_PLUS_S64 = 51,
+ FILTER_OP_UNARY_MINUS_S64 = 52,
+ FILTER_OP_UNARY_NOT_S64 = 53,
+ FILTER_OP_UNARY_PLUS_DOUBLE = 54,
+ FILTER_OP_UNARY_MINUS_DOUBLE = 55,
+ FILTER_OP_UNARY_NOT_DOUBLE = 56,
+
+ /* logical */
+ FILTER_OP_AND = 57,
+ FILTER_OP_OR = 58,
+
+ /* load field ref */
+ FILTER_OP_LOAD_FIELD_REF = 59,
+ FILTER_OP_LOAD_FIELD_REF_STRING = 60,
+ FILTER_OP_LOAD_FIELD_REF_SEQUENCE = 61,
+ FILTER_OP_LOAD_FIELD_REF_S64 = 62,
+ FILTER_OP_LOAD_FIELD_REF_DOUBLE = 63,
+
+ /* load immediate from operand */
+ FILTER_OP_LOAD_STRING = 64,
+ FILTER_OP_LOAD_S64 = 65,
+ FILTER_OP_LOAD_DOUBLE = 66,
+
+ /* cast */
+ FILTER_OP_CAST_TO_S64 = 67,
+ FILTER_OP_CAST_DOUBLE_TO_S64 = 68,
+ FILTER_OP_CAST_NOP = 69,
+
+ /* get context ref */
+ FILTER_OP_GET_CONTEXT_REF = 70,
+ FILTER_OP_GET_CONTEXT_REF_STRING = 71,
+ FILTER_OP_GET_CONTEXT_REF_S64 = 72,
+ FILTER_OP_GET_CONTEXT_REF_DOUBLE = 73,
+
+ /* load userspace field ref */
+ FILTER_OP_LOAD_FIELD_REF_USER_STRING = 74,
+ FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE = 75,
+
+ /*
+ * load immediate star globbing pattern (literal string)
+ * from immediate
+ */
+ FILTER_OP_LOAD_STAR_GLOB_STRING = 76,
+
+ /* globbing pattern binary operator: apply to */
+ FILTER_OP_EQ_STAR_GLOB_STRING = 77,
+ FILTER_OP_NE_STAR_GLOB_STRING = 78,
+
+ /*
+ * Instructions for recursive traversal through composed types.
+ */
+ FILTER_OP_GET_CONTEXT_ROOT = 79,
+ FILTER_OP_GET_APP_CONTEXT_ROOT = 80,
+ FILTER_OP_GET_PAYLOAD_ROOT = 81,
+
+ FILTER_OP_GET_SYMBOL = 82,
+ FILTER_OP_GET_SYMBOL_FIELD = 83,
+ FILTER_OP_GET_INDEX_U16 = 84,
+ FILTER_OP_GET_INDEX_U64 = 85,
+
+ FILTER_OP_LOAD_FIELD = 86,
+ FILTER_OP_LOAD_FIELD_S8 = 87,
+ FILTER_OP_LOAD_FIELD_S16 = 88,
+ FILTER_OP_LOAD_FIELD_S32 = 89,
+ FILTER_OP_LOAD_FIELD_S64 = 90,
+ FILTER_OP_LOAD_FIELD_U8 = 91,
+ FILTER_OP_LOAD_FIELD_U16 = 92,
+ FILTER_OP_LOAD_FIELD_U32 = 93,
+ FILTER_OP_LOAD_FIELD_U64 = 94,
+ FILTER_OP_LOAD_FIELD_STRING = 95,
+ FILTER_OP_LOAD_FIELD_SEQUENCE = 96,
+ FILTER_OP_LOAD_FIELD_DOUBLE = 97,
+
+ FILTER_OP_UNARY_BIT_NOT = 98,
+
+ FILTER_OP_RETURN_S64 = 99,
+
+ NR_FILTER_OPS,
+};
+
+typedef uint8_t filter_opcode_t;
+
+struct load_op {
+ filter_opcode_t op;
+ char data[0];
+ /* data to load. Size known by enum filter_opcode and null-term char. */
+} LTTNG_PACKED;
+
+struct binary_op {
+ filter_opcode_t op;
+} LTTNG_PACKED;
+
+struct unary_op {
+ filter_opcode_t op;
+} LTTNG_PACKED;
+
+/* skip_offset is absolute from start of bytecode */
+struct logical_op {
+ filter_opcode_t op;
+ uint16_t skip_offset; /* bytecode insn, if skip second test */
+} LTTNG_PACKED;
+
+struct cast_op {
+ filter_opcode_t op;
+} LTTNG_PACKED;
+
+struct return_op {
+ filter_opcode_t op;
+} LTTNG_PACKED;
+
+struct lttng_filter_bytecode_alloc {
+ uint32_t alloc_len;
+ struct lttng_filter_bytecode b;
+};
+
+LTTNG_HIDDEN int bytecode_init(struct lttng_filter_bytecode_alloc **fb);
+LTTNG_HIDDEN int32_t bytecode_reserve(struct lttng_filter_bytecode_alloc **fb,
+ uint32_t align, uint32_t len);
+LTTNG_HIDDEN int bytecode_push(struct lttng_filter_bytecode_alloc **fb,
+ const void *data, uint32_t align, uint32_t len);
+LTTNG_HIDDEN int bytecode_push_logical(struct lttng_filter_bytecode_alloc **fb,
+ struct logical_op *data, uint32_t align, uint32_t len,
+ uint16_t *skip_offset);
+
+static inline
+unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode)
+{
+ return bytecode->len;
+}
+
+#endif /* LTTNG_COMMON_BYTECODE_H */
filter-visitor-ir-normalize-glob-patterns.c \
filter-visitor-generate-bytecode.c \
filter-ast.h \
- filter-bytecode.h \
filter-ir.h \
memstream.h
libfilter_la_CFLAGS = -include filter-symbols.h $(AM_CFLAGS)
endif # HAVE_FLEX
filter_grammar_test_SOURCES = filter-grammar-test.c
-filter_grammar_test_LDADD = libfilter.la
+filter_grammar_test_LDADD = \
+ libfilter.la \
+ ../bytecode/libbytecode.la
*/
#include <urcu/list.h>
+#include <stdio.h>
#include <stdint.h>
#define printf_debug(fmt, args...) \
+++ /dev/null
-#ifndef _FILTER_BYTECODE_H
-#define _FILTER_BYTECODE_H
-
-/*
- * filter-bytecode.h
- *
- * LTTng filter bytecode
- *
- * Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <common/sessiond-comm/sessiond-comm.h>
-#include <common/macros.h>
-
-#include "filter-ast.h"
-
-/*
- * offsets are absolute from start of bytecode.
- */
-
-struct field_ref {
- /* Initially, symbol offset. After link, field offset. */
- uint16_t offset;
-} LTTNG_PACKED;
-
-struct get_symbol {
- /* Symbol offset. */
- uint16_t offset;
-} LTTNG_PACKED;
-
-struct get_index_u16 {
- uint16_t index;
-} LTTNG_PACKED;
-
-struct get_index_u64 {
- uint64_t index;
-} LTTNG_PACKED;
-
-struct literal_numeric {
- int64_t v;
-} LTTNG_PACKED;
-
-struct literal_double {
- double v;
-} LTTNG_PACKED;
-
-struct literal_string {
- char string[0];
-} LTTNG_PACKED;
-
-enum filter_op {
- FILTER_OP_UNKNOWN = 0,
-
- FILTER_OP_RETURN = 1,
-
- /* binary */
- FILTER_OP_MUL = 2,
- FILTER_OP_DIV = 3,
- FILTER_OP_MOD = 4,
- FILTER_OP_PLUS = 5,
- FILTER_OP_MINUS = 6,
- FILTER_OP_BIT_RSHIFT = 7,
- FILTER_OP_BIT_LSHIFT = 8,
- FILTER_OP_BIT_AND = 9,
- FILTER_OP_BIT_OR = 10,
- FILTER_OP_BIT_XOR = 11,
-
- /* binary comparators */
- FILTER_OP_EQ = 12,
- FILTER_OP_NE = 13,
- FILTER_OP_GT = 14,
- FILTER_OP_LT = 15,
- FILTER_OP_GE = 16,
- FILTER_OP_LE = 17,
-
- /* string binary comparator: apply to */
- FILTER_OP_EQ_STRING = 18,
- FILTER_OP_NE_STRING = 19,
- FILTER_OP_GT_STRING = 20,
- FILTER_OP_LT_STRING = 21,
- FILTER_OP_GE_STRING = 22,
- FILTER_OP_LE_STRING = 23,
-
- /* s64 binary comparator */
- FILTER_OP_EQ_S64 = 24,
- FILTER_OP_NE_S64 = 25,
- FILTER_OP_GT_S64 = 26,
- FILTER_OP_LT_S64 = 27,
- FILTER_OP_GE_S64 = 28,
- FILTER_OP_LE_S64 = 29,
-
- /* double binary comparator */
- FILTER_OP_EQ_DOUBLE = 30,
- FILTER_OP_NE_DOUBLE = 31,
- FILTER_OP_GT_DOUBLE = 32,
- FILTER_OP_LT_DOUBLE = 33,
- FILTER_OP_GE_DOUBLE = 34,
- FILTER_OP_LE_DOUBLE = 35,
-
- /* Mixed S64-double binary comparators */
- FILTER_OP_EQ_DOUBLE_S64 = 36,
- FILTER_OP_NE_DOUBLE_S64 = 37,
- FILTER_OP_GT_DOUBLE_S64 = 38,
- FILTER_OP_LT_DOUBLE_S64 = 39,
- FILTER_OP_GE_DOUBLE_S64 = 40,
- FILTER_OP_LE_DOUBLE_S64 = 41,
-
- FILTER_OP_EQ_S64_DOUBLE = 42,
- FILTER_OP_NE_S64_DOUBLE = 43,
- FILTER_OP_GT_S64_DOUBLE = 44,
- FILTER_OP_LT_S64_DOUBLE = 45,
- FILTER_OP_GE_S64_DOUBLE = 46,
- FILTER_OP_LE_S64_DOUBLE = 47,
-
- /* unary */
- FILTER_OP_UNARY_PLUS = 48,
- FILTER_OP_UNARY_MINUS = 49,
- FILTER_OP_UNARY_NOT = 50,
- FILTER_OP_UNARY_PLUS_S64 = 51,
- FILTER_OP_UNARY_MINUS_S64 = 52,
- FILTER_OP_UNARY_NOT_S64 = 53,
- FILTER_OP_UNARY_PLUS_DOUBLE = 54,
- FILTER_OP_UNARY_MINUS_DOUBLE = 55,
- FILTER_OP_UNARY_NOT_DOUBLE = 56,
-
- /* logical */
- FILTER_OP_AND = 57,
- FILTER_OP_OR = 58,
-
- /* load field ref */
- FILTER_OP_LOAD_FIELD_REF = 59,
- FILTER_OP_LOAD_FIELD_REF_STRING = 60,
- FILTER_OP_LOAD_FIELD_REF_SEQUENCE = 61,
- FILTER_OP_LOAD_FIELD_REF_S64 = 62,
- FILTER_OP_LOAD_FIELD_REF_DOUBLE = 63,
-
- /* load immediate from operand */
- FILTER_OP_LOAD_STRING = 64,
- FILTER_OP_LOAD_S64 = 65,
- FILTER_OP_LOAD_DOUBLE = 66,
-
- /* cast */
- FILTER_OP_CAST_TO_S64 = 67,
- FILTER_OP_CAST_DOUBLE_TO_S64 = 68,
- FILTER_OP_CAST_NOP = 69,
-
- /* get context ref */
- FILTER_OP_GET_CONTEXT_REF = 70,
- FILTER_OP_GET_CONTEXT_REF_STRING = 71,
- FILTER_OP_GET_CONTEXT_REF_S64 = 72,
- FILTER_OP_GET_CONTEXT_REF_DOUBLE = 73,
-
- /* load userspace field ref */
- FILTER_OP_LOAD_FIELD_REF_USER_STRING = 74,
- FILTER_OP_LOAD_FIELD_REF_USER_SEQUENCE = 75,
-
- /*
- * load immediate star globbing pattern (literal string)
- * from immediate
- */
- FILTER_OP_LOAD_STAR_GLOB_STRING = 76,
-
- /* globbing pattern binary operator: apply to */
- FILTER_OP_EQ_STAR_GLOB_STRING = 77,
- FILTER_OP_NE_STAR_GLOB_STRING = 78,
-
- /*
- * Instructions for recursive traversal through composed types.
- */
- FILTER_OP_GET_CONTEXT_ROOT = 79,
- FILTER_OP_GET_APP_CONTEXT_ROOT = 80,
- FILTER_OP_GET_PAYLOAD_ROOT = 81,
-
- FILTER_OP_GET_SYMBOL = 82,
- FILTER_OP_GET_SYMBOL_FIELD = 83,
- FILTER_OP_GET_INDEX_U16 = 84,
- FILTER_OP_GET_INDEX_U64 = 85,
-
- FILTER_OP_LOAD_FIELD = 86,
- FILTER_OP_LOAD_FIELD_S8 = 87,
- FILTER_OP_LOAD_FIELD_S16 = 88,
- FILTER_OP_LOAD_FIELD_S32 = 89,
- FILTER_OP_LOAD_FIELD_S64 = 90,
- FILTER_OP_LOAD_FIELD_U8 = 91,
- FILTER_OP_LOAD_FIELD_U16 = 92,
- FILTER_OP_LOAD_FIELD_U32 = 93,
- FILTER_OP_LOAD_FIELD_U64 = 94,
- FILTER_OP_LOAD_FIELD_STRING = 95,
- FILTER_OP_LOAD_FIELD_SEQUENCE = 96,
- FILTER_OP_LOAD_FIELD_DOUBLE = 97,
-
- FILTER_OP_UNARY_BIT_NOT = 98,
-
- FILTER_OP_RETURN_S64 = 99,
-
- NR_FILTER_OPS,
-};
-
-typedef uint8_t filter_opcode_t;
-
-struct load_op {
- filter_opcode_t op;
- char data[0];
- /* data to load. Size known by enum filter_opcode and null-term char. */
-} LTTNG_PACKED;
-
-struct binary_op {
- filter_opcode_t op;
-} LTTNG_PACKED;
-
-struct unary_op {
- filter_opcode_t op;
-} LTTNG_PACKED;
-
-/* skip_offset is absolute from start of bytecode */
-struct logical_op {
- filter_opcode_t op;
- uint16_t skip_offset; /* bytecode insn, if skip second test */
-} LTTNG_PACKED;
-
-struct cast_op {
- filter_opcode_t op;
-} LTTNG_PACKED;
-
-struct return_op {
- filter_opcode_t op;
-} LTTNG_PACKED;
-
-struct lttng_filter_bytecode_alloc {
- uint32_t alloc_len;
- struct lttng_filter_bytecode b;
-};
-
-static inline
-unsigned int bytecode_get_len(struct lttng_filter_bytecode *bytecode)
-{
- return bytecode->len;
-}
-
-#endif /* _FILTER_BYTECODE_H */
#include <inttypes.h>
#include <common/compat/errno.h>
-
+#include "common/bytecode/bytecode.h"
#include "filter-ast.h"
#include "filter-parser.h"
-#include "filter-bytecode.h"
int main(int argc, char **argv)
{
#include <stdlib.h>
#include <assert.h>
#include <inttypes.h>
+#include "common/bytecode/bytecode.h"
#include "filter-ast.h"
#include "filter-parser.h"
-#include "filter-bytecode.h"
#include "memstream.h"
#include <common/compat/errno.h>
#include <common/compat/errno.h>
#include <common/compat/string.h>
-#include "filter-bytecode.h"
-#include "filter-ir.h"
+#include "common/align.h"
+#include "common/bytecode/bytecode.h"
+#include "common/compat/string.h"
+#include "common/macros.h"
#include "filter-ast.h"
-
-#include <common/macros.h>
+#include "filter-ir.h"
#ifndef max_t
#define max_t(type, a, b) ((type) ((a) > (b) ? (a) : (b)))
#endif
-#define INIT_ALLOC_SIZE 4
-
static
int recursive_visit_gen_bytecode(struct filter_parser_ctx *ctx,
struct ir_op *node);
-static inline int get_count_order(unsigned int count)
-{
- int order;
-
- order = lttng_fls(count) - 1;
- if (count & (count - 1))
- order++;
- return order;
-}
-
-static
-int bytecode_init(struct lttng_filter_bytecode_alloc **fb)
-{
- uint32_t alloc_len;
-
- alloc_len = sizeof(struct lttng_filter_bytecode_alloc) + INIT_ALLOC_SIZE;
- *fb = calloc(alloc_len, 1);
- if (!*fb) {
- return -ENOMEM;
- } else {
- (*fb)->alloc_len = alloc_len;
- return 0;
- }
-}
-
-static
-int32_t bytecode_reserve(struct lttng_filter_bytecode_alloc **fb, uint32_t align, uint32_t len)
-{
- int32_t ret;
- uint32_t padding = offset_align((*fb)->b.len, align);
- uint32_t new_len = (*fb)->b.len + padding + len;
- uint32_t new_alloc_len = sizeof(struct lttng_filter_bytecode_alloc) + new_len;
- uint32_t old_alloc_len = (*fb)->alloc_len;
-
- if (new_len > LTTNG_FILTER_MAX_LEN)
- return -EINVAL;
-
- if (new_alloc_len > old_alloc_len) {
- struct lttng_filter_bytecode_alloc *newptr;
-
- new_alloc_len =
- max_t(uint32_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1);
- newptr = realloc(*fb, new_alloc_len);
- if (!newptr)
- return -ENOMEM;
- *fb = newptr;
- /* We zero directly the memory from start of allocation. */
- memset(&((char *) *fb)[old_alloc_len], 0, new_alloc_len - old_alloc_len);
- (*fb)->alloc_len = new_alloc_len;
- }
- (*fb)->b.len += padding;
- ret = (*fb)->b.len;
- (*fb)->b.len += len;
- return ret;
-}
-
-static
-int bytecode_push(struct lttng_filter_bytecode_alloc **fb, const void *data,
- uint32_t align, uint32_t len)
-{
- int32_t offset;
-
- offset = bytecode_reserve(fb, align, len);
- if (offset < 0)
- return offset;
- memcpy(&(*fb)->b.data[offset], data, len);
- return 0;
-}
-
-static
-int bytecode_push_logical(struct lttng_filter_bytecode_alloc **fb,
- struct logical_op *data,
- uint32_t align, uint32_t len,
- uint16_t *skip_offset)
-{
- int32_t offset;
-
- offset = bytecode_reserve(fb, align, len);
- if (offset < 0)
- return offset;
- memcpy(&(*fb)->b.data[offset], data, len);
- *skip_offset =
- (void *) &((struct logical_op *) &(*fb)->b.data[offset])->skip_offset
- - (void *) &(*fb)->b.data[0];
- return 0;
-}
-
static
int bytecode_patch(struct lttng_filter_bytecode_alloc **fb,
const void *data,
#include <assert.h>
#include <signal.h>
+#include <common/bytecode/bytecode.h>
#include <common/lttng-kernel.h>
#include <common/common.h>
#include <common/utils.h>
#include <common/sessiond-comm/sessiond-comm.h>
#include <common/filter/filter-ast.h>
-#include <common/filter/filter-bytecode.h>
#include "runas.h"
#include <string.h>
#include <unistd.h>
+#include <common/bytecode/bytecode.h>
#include <common/common.h>
#include <common/compat/errno.h>
#include <common/compat/string.h>
#include <common/filter/filter-ast.h>
#include <common/filter/filter-parser.h>
-#include <common/filter/filter-bytecode.h>
#include <common/filter/memstream.h>
#include "lttng-ctl-helper.h"
projects / lttng-tools.git / commitdiff
