X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=liblttng-ust%2Flttng-bytecode.c;h=c5b3c13366ade08c03aa5ec34c2013fac1344473;hb=115db533af4d56a1b5c8b3a5ff6a15dc58579cd8;hp=bbf8e7e7b036aca0afb41a21dd3590c4eb411e55;hpb=c42416df21bb28b9b19ca509f7242f660c5469b2;p=lttng-ust.git diff --git a/liblttng-ust/lttng-bytecode.c b/liblttng-ust/lttng-bytecode.c index bbf8e7e7..c5b3c133 100644 --- a/liblttng-ust/lttng-bytecode.c +++ b/liblttng-ust/lttng-bytecode.c @@ -1,27 +1,9 @@ /* - * lttng-bytecode.c - * - * LTTng UST bytecode code. + * SPDX-License-Identifier: MIT * * Copyright (C) 2010-2016 Mathieu Desnoyers * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. + * LTTng UST bytecode code. */ #define _LGPL_SOURCE @@ -30,6 +12,7 @@ #include +#include "context-internal.h" #include "lttng-bytecode.h" #include "ust-events-internal.h" @@ -179,7 +162,7 @@ static const char *opnames[] = { [ BYTECODE_OP_RETURN_S64 ] = "RETURN_S64", }; -const char *print_op(enum bytecode_op op) +const char *lttng_bytecode_print_op(enum bytecode_op op) { if (op >= NR_BYTECODE_OPS) return "UNKNOWN"; @@ -220,13 +203,10 @@ int apply_field_reloc(const struct lttng_event_desc *event_desc, /* compute field offset */ switch (fields[i].type.atype) { case atype_integer: - case atype_enum: case atype_enum_nestable: field_offset += sizeof(int64_t); break; - case atype_array: case atype_array_nestable: - case atype_sequence: case atype_sequence_nestable: field_offset += sizeof(unsigned long); field_offset += sizeof(void *); @@ -259,13 +239,10 @@ int apply_field_reloc(const struct lttng_event_desc *event_desc, field_ref = (struct field_ref *) op->data; switch (field->type.atype) { case atype_integer: - case atype_enum: case atype_enum_nestable: op->op = BYTECODE_OP_LOAD_FIELD_REF_S64; break; - case atype_array: case atype_array_nestable: - case atype_sequence: case atype_sequence_nestable: op->op = BYTECODE_OP_LOAD_FIELD_REF_SEQUENCE; break; @@ -298,21 +275,21 @@ int apply_context_reloc(struct bytecode_runtime *runtime, struct load_op *op; struct lttng_ctx_field *ctx_field; int idx; - struct lttng_ctx *ctx = *runtime->p.pctx; + struct lttng_ctx **pctx = runtime->p.priv->pctx; dbg_printf("Apply context reloc: %u %s\n", reloc_offset, context_name); /* Get context index */ - idx = lttng_get_context_index(ctx, context_name); + idx = lttng_get_context_index(*pctx, 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, - &ctx); + pctx); if (ret) return ret; - idx = lttng_get_context_index(ctx, context_name); + idx = lttng_get_context_index(*pctx, context_name); if (idx < 0) return -ENOENT; } else { @@ -324,7 +301,7 @@ int apply_context_reloc(struct bytecode_runtime *runtime, return -EINVAL; /* Get context return type */ - ctx_field = &ctx->fields[idx]; + ctx_field = &(*pctx)->fields[idx]; op = (struct load_op *) &runtime->code[reloc_offset]; switch (bytecode_op) { @@ -335,15 +312,12 @@ int apply_context_reloc(struct bytecode_runtime *runtime, field_ref = (struct field_ref *) op->data; switch (ctx_field->event_field.type.atype) { case atype_integer: - case atype_enum: case atype_enum_nestable: op->op = BYTECODE_OP_GET_CONTEXT_REF_S64; break; /* Sequence and array supported as string */ case atype_string: - case atype_array: case atype_array_nestable: - case atype_sequence: case atype_sequence_nestable: op->op = BYTECODE_OP_GET_CONTEXT_REF_STRING; break; @@ -410,7 +384,7 @@ int bytecode_is_linked(struct lttng_ust_bytecode_node *bytecode, struct lttng_bytecode_runtime *bc_runtime; cds_list_for_each_entry(bc_runtime, bytecode_runtime_head, node) { - if (bc_runtime->bc == bytecode) + if (bc_runtime->priv->bc == bytecode) return 1; } return 0; @@ -421,19 +395,21 @@ int bytecode_is_linked(struct lttng_ust_bytecode_node *bytecode, * bytecode runtime. */ static -int _lttng_filter_link_bytecode(const struct lttng_event_desc *event_desc, +int link_bytecode(const struct lttng_event_desc *event_desc, struct lttng_ctx **ctx, struct lttng_ust_bytecode_node *bytecode, + struct cds_list_head *bytecode_runtime_head, struct cds_list_head *insert_loc) { int ret, offset, next_offset; struct bytecode_runtime *runtime = NULL; + struct lttng_ust_bytecode_runtime_private *runtime_priv = NULL; size_t runtime_alloc_len; if (!bytecode) return 0; /* Bytecode already linked */ - if (bytecode_is_linked(bytecode, insert_loc)) + if (bytecode_is_linked(bytecode, bytecode_runtime_head)) return 0; dbg_printf("Linking...\n"); @@ -445,8 +421,17 @@ int _lttng_filter_link_bytecode(const struct lttng_event_desc *event_desc, ret = -ENOMEM; goto alloc_error; } - runtime->p.bc = bytecode; - runtime->p.pctx = ctx; + runtime_priv = zmalloc(sizeof(struct lttng_ust_bytecode_runtime_private)); + if (!runtime_priv) { + free(runtime); + runtime = NULL; + ret = -ENOMEM; + goto alloc_error; + } + runtime->p.priv = runtime_priv; + runtime_priv->pub = runtime; + runtime_priv->bc = bytecode; + runtime_priv->pctx = ctx; runtime->len = bytecode->bc.reloc_offset; /* copy original bytecode */ memcpy(runtime->code, bytecode->bc.data, runtime->len); @@ -483,11 +468,14 @@ int _lttng_filter_link_bytecode(const struct lttng_event_desc *event_desc, case LTTNG_UST_BYTECODE_NODE_TYPE_FILTER: runtime->p.interpreter_funcs.filter = lttng_bytecode_filter_interpret; break; + case LTTNG_UST_BYTECODE_NODE_TYPE_CAPTURE: + runtime->p.interpreter_funcs.capture = lttng_bytecode_capture_interpret; + break; default: abort(); } - runtime->p.link_failed = 0; + runtime->p.priv->link_failed = 0; cds_list_add_rcu(&runtime->p.node, insert_loc); dbg_printf("Linking successful.\n"); return 0; @@ -497,11 +485,14 @@ link_error: case LTTNG_UST_BYTECODE_NODE_TYPE_FILTER: runtime->p.interpreter_funcs.filter = lttng_bytecode_filter_interpret_false; break; + case LTTNG_UST_BYTECODE_NODE_TYPE_CAPTURE: + runtime->p.interpreter_funcs.capture = lttng_bytecode_capture_interpret_false; + break; default: abort(); } - runtime->p.link_failed = 1; + runtime_priv->link_failed = 1; cds_list_add_rcu(&runtime->p.node, insert_loc); alloc_error: dbg_printf("Linking failed.\n"); @@ -510,40 +501,62 @@ alloc_error: void lttng_bytecode_filter_sync_state(struct lttng_bytecode_runtime *runtime) { - struct lttng_ust_bytecode_node *bc = runtime->bc; + struct lttng_ust_bytecode_node *bc = runtime->priv->bc; - if (!bc->enabler->enabled || runtime->link_failed) + if (!bc->enabler->enabled || runtime->priv->link_failed) runtime->interpreter_funcs.filter = lttng_bytecode_filter_interpret_false; else runtime->interpreter_funcs.filter = lttng_bytecode_filter_interpret; } +void lttng_bytecode_capture_sync_state(struct lttng_bytecode_runtime *runtime) +{ + struct lttng_ust_bytecode_node *bc = runtime->priv->bc; + + if (!bc->enabler->enabled || runtime->priv->link_failed) + runtime->interpreter_funcs.capture = lttng_bytecode_capture_interpret_false; + else + runtime->interpreter_funcs.capture = lttng_bytecode_capture_interpret; +} + /* - * Link all bytecodes of the enabler referenced in the provided bytecode list. + * Given the lists of bytecode programs of an instance (trigger or event) and + * of a matching enabler, try to link all the enabler's bytecode programs with + * the instance. + * + * This function is called after we confirmed that name enabler and the + * instance are name matching (or glob pattern matching). */ 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 cds_list_head *instance_bytecode_head, + struct cds_list_head *enabler_bytecode_head) { - struct lttng_ust_bytecode_node *bc; + struct lttng_ust_bytecode_node *enabler_bc; struct lttng_bytecode_runtime *runtime; assert(event_desc); - /* Link each bytecode. */ - cds_list_for_each_entry(bc, &enabler->filter_bytecode_head, node) { + /* Go over all the bytecode programs of the enabler. */ + cds_list_for_each_entry(enabler_bc, enabler_bytecode_head, node) { int found = 0, ret; struct cds_list_head *insert_loc; - cds_list_for_each_entry(runtime, - bytecode_runtime_head, node) { - if (runtime->bc == bc) { + /* + * Check if the current enabler bytecode program is already + * linked with the instance. + */ + cds_list_for_each_entry(runtime, instance_bytecode_head, node) { + if (runtime->priv->bc == enabler_bc) { found = 1; break; } } - /* Skip bytecode already linked */ + + /* + * Skip bytecode already linked, go to the next enabler + * bytecode program. + */ if (found) continue; @@ -553,8 +566,8 @@ void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc, * insert the new bytecode right after it. */ cds_list_for_each_entry_reverse(runtime, - bytecode_runtime_head, node) { - if (runtime->bc->bc.seqnum <= bc->bc.seqnum) { + instance_bytecode_head, node) { + if (runtime->priv->bc->bc.seqnum <= enabler_bc->bc.seqnum) { /* insert here */ insert_loc = &runtime->node; goto add_within; @@ -562,11 +575,10 @@ void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc, } /* Add to head to list */ - insert_loc = bytecode_runtime_head; + insert_loc = instance_bytecode_head; add_within: dbg_printf("linking bytecode\n"); - ret = _lttng_filter_link_bytecode(event_desc, ctx, bc, - insert_loc); + ret = link_bytecode(event_desc, ctx, enabler_bc, instance_bytecode_head, insert_loc); if (ret) { dbg_printf("[lttng filter] warning: cannot link event bytecode\n"); } @@ -591,22 +603,18 @@ void free_filter_runtime(struct cds_list_head *bytecode_runtime_head) cds_list_for_each_entry_safe(runtime, tmp, bytecode_runtime_head, p.node) { free(runtime->data); + free(runtime->p.priv); free(runtime); } } -void lttng_free_event_filter_runtime(struct lttng_event *event) +void lttng_free_event_recorder_filter_runtime(struct lttng_ust_event_recorder *event_recorder) { - free_filter_runtime(&event->filter_bytecode_runtime_head); + free_filter_runtime(&event_recorder->parent->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); -} - -/* For backward compatibility. Leave those exported symbols in place. */ -void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime) -{ + free_filter_runtime(&event_notifier->parent->filter_bytecode_runtime_head); }