From: Mathieu Desnoyers Date: Fri, 13 Jul 2012 23:00:15 +0000 (-0400) Subject: Filter: specialize 'and' and 'or' ops. X-Git-Tag: v2.1.0-rc1~31 X-Git-Url: http://git.liburcu.org/?a=commitdiff_plain;ds=sidebyside;h=96c9d84615eb44340d9ac630df582e80516cc9a3;p=lttng-ust.git Filter: specialize 'and' and 'or' ops. Signed-off-by: Mathieu Desnoyers --- diff --git a/liblttng-ust/filter-bytecode.h b/liblttng-ust/filter-bytecode.h index 1c51eb09..61d10cd7 100644 --- a/liblttng-ust/filter-bytecode.h +++ b/liblttng-ust/filter-bytecode.h @@ -114,6 +114,10 @@ enum filter_op { /* logical */ FILTER_OP_AND, FILTER_OP_OR, + FILTER_OP_AND_S64, + FILTER_OP_OR_S64, + FILTER_OP_AND_DOUBLE, + FILTER_OP_OR_DOUBLE, /* load */ FILTER_OP_LOAD_FIELD_REF, diff --git a/liblttng-ust/lttng-filter.c b/liblttng-ust/lttng-filter.c index 60879e1f..dffcca5f 100644 --- a/liblttng-ust/lttng-filter.c +++ b/liblttng-ust/lttng-filter.c @@ -152,6 +152,10 @@ static const char *opnames[] = { /* logical */ [ FILTER_OP_AND ] = "AND", [ FILTER_OP_OR ] = "OR", + [ FILTER_OP_AND_S64 ] = "AND_S64", + [ FILTER_OP_OR_S64 ] = "OR_S64", + [ FILTER_OP_AND_DOUBLE ] = "AND_DOUBLE", + [ FILTER_OP_OR_DOUBLE ] = "OR_DOUBLE", /* load */ [ FILTER_OP_LOAD_FIELD_REF ] = "LOAD_FIELD_REF", @@ -383,6 +387,10 @@ int lttng_filter_interpret_bytecode(void *filter_data, /* logical */ [ FILTER_OP_AND ] = &&LABEL_FILTER_OP_AND, [ FILTER_OP_OR ] = &&LABEL_FILTER_OP_OR, + [ FILTER_OP_AND_S64 ] = &&LABEL_FILTER_OP_AND_S64, + [ FILTER_OP_OR_S64 ] = &&LABEL_FILTER_OP_OR_S64, + [ FILTER_OP_AND_DOUBLE ] = &&LABEL_FILTER_OP_AND_DOUBLE, + [ FILTER_OP_OR_DOUBLE ] = &&LABEL_FILTER_OP_OR_DOUBLE, /* load */ [ FILTER_OP_LOAD_FIELD_REF ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF, @@ -645,12 +653,18 @@ int lttng_filter_interpret_bytecode(void *filter_data, /* logical */ OP(FILTER_OP_AND): + OP(FILTER_OP_OR): + ERR("unsupported non-specialized bytecode op %u\n", + (unsigned int) *(filter_opcode_t *) pc); + ret = -EINVAL; + goto end; + + OP(FILTER_OP_AND_S64): { struct logical_op *insn = (struct logical_op *) pc; /* If REG_R0 is 0, skip and evaluate to 0 */ - if ((reg[REG_R0].type == REG_S64 && reg[REG_R0].v == 0) - || unlikely(reg[REG_R0].type == REG_DOUBLE && reg[REG_R0].d == 0.0)) { + if (unlikely(reg[REG_R0].v == 0)) { dbg_printf("Jumping to bytecode offset %u\n", (unsigned int) insn->skip_offset); next_pc = start_pc + insn->skip_offset; @@ -659,14 +673,13 @@ int lttng_filter_interpret_bytecode(void *filter_data, } PO; } - OP(FILTER_OP_OR): + OP(FILTER_OP_OR_S64): { struct logical_op *insn = (struct logical_op *) pc; /* If REG_R0 is nonzero, skip and evaluate to 1 */ - if ((reg[REG_R0].type == REG_S64 && reg[REG_R0].v != 0) - || unlikely(reg[REG_R0].type == REG_DOUBLE && reg[REG_R0].d != 0.0)) { + if (unlikely(reg[REG_R0].v != 0)) { reg[REG_R0].v = 1; dbg_printf("Jumping to bytecode offset %u\n", (unsigned int) insn->skip_offset); @@ -677,6 +690,38 @@ int lttng_filter_interpret_bytecode(void *filter_data, PO; } + OP(FILTER_OP_AND_DOUBLE): + { + struct logical_op *insn = (struct logical_op *) pc; + + /* If REG_R0 is 0, skip and evaluate to 0 */ + if ((reg[REG_R0].type == REG_DOUBLE && unlikely(reg[REG_R0].d == 0.0)) + || (reg[REG_R0].type == REG_S64 && unlikely(reg[REG_R0].v == 0))) { + dbg_printf("Jumping to bytecode offset %u\n", + (unsigned int) insn->skip_offset); + next_pc = start_pc + insn->skip_offset; + } else { + next_pc += sizeof(struct logical_op); + } + PO; + } + OP(FILTER_OP_OR_DOUBLE): + { + struct logical_op *insn = (struct logical_op *) pc; + + /* If REG_R0 is nonzero, skip and evaluate to 1 (in double) */ + if ((reg[REG_R0].type == REG_DOUBLE && unlikely(reg[REG_R0].d != 0.0)) + || (reg[REG_R0].type == REG_S64 && unlikely(reg[REG_R0].v != 0))) { + reg[REG_R0].d = 1.0; + dbg_printf("Jumping to bytecode offset %u\n", + (unsigned int) insn->skip_offset); + next_pc = start_pc + insn->skip_offset; + } else { + next_pc += sizeof(struct logical_op); + } + PO; + } + /* load */ OP(FILTER_OP_LOAD_FIELD_REF_STRING): { @@ -999,6 +1044,11 @@ int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode) ret = -EINVAL; goto end; } + if (reg[REG_R0].type != REG_DOUBLE && reg[REG_R1].type != REG_DOUBLE) { + ERR("Double operator should have at least one double register\n"); + ret = -EINVAL; + goto end; + } reg[REG_R0].type = REG_DOUBLE; next_pc += sizeof(struct binary_op); break; @@ -1081,6 +1131,10 @@ int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode) /* logical */ case FILTER_OP_AND: case FILTER_OP_OR: + case FILTER_OP_AND_S64: + case FILTER_OP_OR_S64: + case FILTER_OP_AND_DOUBLE: + case FILTER_OP_OR_DOUBLE: { struct logical_op *insn = (struct logical_op *) pc; @@ -1100,6 +1154,41 @@ int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode) ret = -EINVAL; goto end; } + if (insn->op == FILTER_OP_AND_S64 + || insn->op == FILTER_OP_OR_S64) { + if (reg[REG_R0].type != REG_S64 + || reg[REG_R1].type != REG_S64) { + ret = -EINVAL; + goto end; + } + } + if (insn->op == FILTER_OP_AND_DOUBLE + || insn->op == FILTER_OP_OR_DOUBLE) { + if (reg[REG_R0].type != REG_DOUBLE + && reg[REG_R1].type != REG_DOUBLE) { + ERR("Double operator should have at least one double register\n"); + ret = -EINVAL; + goto end; + } + } + switch(reg[REG_R0].type) { + default: + case REG_STRING: + ERR("unknown register type\n"); + ret = -EINVAL; + goto end; + + case REG_S64: + if (reg[REG_R1].type == REG_S64) { + reg[REG_R0].type = REG_S64; + } else { + reg[REG_R0].type = REG_DOUBLE; + } + break; + case REG_DOUBLE: + reg[REG_R0].type = REG_DOUBLE; + break; + } next_pc += sizeof(struct logical_op); break; } @@ -1475,6 +1564,7 @@ int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode) insn->op = FILTER_OP_UNARY_PLUS_DOUBLE; break; } + next_pc += sizeof(struct unary_op); break; } @@ -1495,6 +1585,7 @@ int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode) insn->op = FILTER_OP_UNARY_MINUS_DOUBLE; break; } + next_pc += sizeof(struct unary_op); break; } @@ -1515,6 +1606,7 @@ int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode) insn->op = FILTER_OP_UNARY_NOT_DOUBLE; break; } + next_pc += sizeof(struct unary_op); break; } @@ -1531,7 +1623,66 @@ int lttng_filter_specialize_bytecode(struct bytecode_runtime *bytecode) /* logical */ case FILTER_OP_AND: + { + struct logical_op *insn = (struct logical_op *) pc; + + switch(reg[REG_R0].type) { + default: + case REG_STRING: + ERR("unknown register type\n"); + ret = -EINVAL; + goto end; + + case REG_S64: + if (reg[REG_R1].type == REG_S64) { + insn->op = FILTER_OP_AND_S64; + reg[REG_R0].type = REG_S64; + } else { + insn->op = FILTER_OP_AND_DOUBLE; + reg[REG_R0].type = REG_DOUBLE; + } + break; + case REG_DOUBLE: + insn->op = FILTER_OP_AND_DOUBLE; + reg[REG_R0].type = REG_DOUBLE; + break; + } + next_pc += sizeof(struct logical_op); + break; + } case FILTER_OP_OR: + { + struct logical_op *insn = (struct logical_op *) pc; + + switch(reg[REG_R0].type) { + default: + case REG_STRING: + ERR("unknown register type\n"); + ret = -EINVAL; + goto end; + + case REG_S64: + if (reg[REG_R1].type == REG_S64) { + insn->op = FILTER_OP_OR_S64; + reg[REG_R0].type = REG_S64; + } else { + insn->op = FILTER_OP_OR_DOUBLE; + reg[REG_R0].type = REG_DOUBLE; + } + break; + case REG_DOUBLE: + insn->op = FILTER_OP_OR_DOUBLE; + reg[REG_R0].type = REG_DOUBLE; + break; + } + next_pc += sizeof(struct logical_op); + break; + } + + case FILTER_OP_AND_S64: + case FILTER_OP_OR_S64: + case FILTER_OP_AND_DOUBLE: + case FILTER_OP_OR_DOUBLE: { next_pc += sizeof(struct logical_op); break;