/* Free all memory allocated to hold synthetic graphemes. These are global * to a VM instance. */ void MVM_nfg_destroy(MVMThreadContext *tc) { MVMNFGState *nfg = tc->instance->nfg; MVMint32 i; /* Free all synthetics. */ if (nfg->synthetics) { size_t used_synths_in_block = nfg->num_synthetics % MVM_SYNTHETIC_GROW_ELEMS; size_t synths_to_free = used_synths_in_block ? nfg->num_synthetics + (MVM_SYNTHETIC_GROW_ELEMS - used_synths_in_block) : nfg->num_synthetics; for (i = 0; i < nfg->num_synthetics; i++) { MVM_fixed_size_free(tc, tc->instance->fsa, nfg->synthetics[i].num_codes * sizeof(MVMCodepoint), nfg->synthetics[i].codes); if (nfg->synthetics[i].case_uc != CASE_UNCHANGED) MVM_free(nfg->synthetics[i].case_uc); if (nfg->synthetics[i].case_lc != CASE_UNCHANGED) MVM_free(nfg->synthetics[i].case_lc); if (nfg->synthetics[i].case_tc != CASE_UNCHANGED) MVM_free(nfg->synthetics[i].case_tc); if (nfg->synthetics[i].case_fc != CASE_UNCHANGED) MVM_free(nfg->synthetics[i].case_fc); } MVM_fixed_size_free(tc, tc->instance->fsa, synths_to_free * sizeof(MVMNFGSynthetic), nfg->synthetics); } MVM_free(nfg); }
/* Frees the memory associated with an argument guard. If `safe` is set to a * non-zero value then the memory is freed at the next safepoint. If it is set * to zero, the memory is freed immediately. */ void MVM_spesh_arg_guard_destroy(MVMThreadContext *tc, MVMSpeshArgGuard *ag, MVMuint32 safe) { if (ag) { size_t total_size = sizeof(MVMSpeshArgGuard) + ag->num_nodes * sizeof(MVMSpeshArgGuardNode); if (safe) MVM_fixed_size_free_at_safepoint(tc, tc->instance->fsa, total_size, ag); else MVM_fixed_size_free(tc, tc->instance->fsa, total_size, ag); } }
/* Clean up an arguments processing context. */ void MVM_args_proc_cleanup(MVMThreadContext *tc, MVMArgProcContext *ctx) { if (ctx->arg_flags) { MVM_free(ctx->arg_flags); MVM_free(ctx->args); } if (ctx->named_used_size > 64) { MVM_fixed_size_free(tc, tc->instance->fsa, ctx->named_used_size, ctx->named_used.byte_array); ctx->named_used_size = 0; } }
/* Does the jump into the optimized code. */ void perform_osr(MVMThreadContext *tc, MVMSpeshCandidate *specialized) { MVMJitCode *jit_code; MVMint32 num_locals; /* Work out the OSR deopt index, to locate the entry point. */ MVMint32 osr_index = get_osr_deopt_index(tc, specialized); #if MVM_LOG_OSR fprintf(stderr, "Performing OSR of frame '%s' (cuid: %s) at index %d\n", MVM_string_utf8_encode_C_string(tc, tc->cur_frame->static_info->body.name), MVM_string_utf8_encode_C_string(tc, tc->cur_frame->static_info->body.cuuid), osr_index); #endif jit_code = specialized->jitcode; num_locals = jit_code && jit_code->local_types ? jit_code->num_locals : specialized->num_locals; /* Resize work area if needed. */ if (specialized->work_size > tc->cur_frame->allocd_work) { /* Resize work area. */ MVMRegister *new_work = MVM_fixed_size_alloc_zeroed(tc, tc->instance->fsa, specialized->work_size); MVMRegister *new_args = new_work + num_locals; memcpy(new_work, tc->cur_frame->work, tc->cur_frame->static_info->body.num_locals * sizeof(MVMRegister)); memcpy(new_args, tc->cur_frame->args, tc->cur_frame->static_info->body.cu->body.max_callsite_size * sizeof(MVMRegister)); MVM_fixed_size_free(tc, tc->instance->fsa, tc->cur_frame->allocd_work, tc->cur_frame->work); tc->cur_frame->work = new_work; tc->cur_frame->allocd_work = specialized->work_size; tc->cur_frame->args = new_args; #if MVM_LOG_OSR fprintf(stderr, "OSR resized work area of frame '%s' (cuid: %s)\n", MVM_string_utf8_encode_C_string(tc, tc->cur_frame->static_info->body.name), MVM_string_utf8_encode_C_string(tc, tc->cur_frame->static_info->body.cuuid)); #endif } else if (specialized->work_size > tc->cur_frame->static_info->body.work_size) { size_t keep_bytes = tc->cur_frame->static_info->body.num_locals * sizeof(MVMRegister); size_t to_null = specialized->work_size - keep_bytes; memset((char *)tc->cur_frame->work + keep_bytes, 0, to_null); } /* Resize environment if needed. */ if (specialized->num_lexicals > tc->cur_frame->static_info->body.num_lexicals) { MVMRegister *new_env = MVM_fixed_size_alloc_zeroed(tc, tc->instance->fsa, specialized->env_size); if (tc->cur_frame->allocd_env) { memcpy(new_env, tc->cur_frame->env, tc->cur_frame->static_info->body.num_lexicals * sizeof(MVMRegister)); MVM_fixed_size_free(tc, tc->instance->fsa, tc->cur_frame->allocd_env, tc->cur_frame->env); } tc->cur_frame->env = new_env; tc->cur_frame->allocd_env = specialized->env_size; #if MVM_LOG_OSR fprintf(stderr, "OSR resized environment of frame '%s' (cuid: %s)\n", MVM_string_utf8_encode_C_string(tc, tc->cur_frame->static_info->body.name), MVM_string_utf8_encode_C_string(tc, tc->cur_frame->static_info->body.cuuid)); #endif } else if (specialized->env_size > tc->cur_frame->static_info->body.env_size) { size_t keep_bytes = tc->cur_frame->static_info->body.num_lexicals * sizeof(MVMRegister); size_t to_null = specialized->env_size - keep_bytes; memset((char *)tc->cur_frame->env + keep_bytes, 0, to_null); } /* Set up frame to point to spesh candidate/slots. */ tc->cur_frame->effective_spesh_slots = specialized->spesh_slots; tc->cur_frame->spesh_cand = specialized; /* Move into the optimized (and maybe JIT-compiled) code. */ if (jit_code && jit_code->num_deopts) { MVMint32 i; *(tc->interp_bytecode_start) = jit_code->bytecode; *(tc->interp_cur_op) = jit_code->bytecode; for (i = 0; i < jit_code->num_deopts; i++) { if (jit_code->deopts[i].idx == osr_index) { tc->cur_frame->jit_entry_label = jit_code->labels[jit_code->deopts[i].label]; break; } } if (i == jit_code->num_deopts) MVM_oops(tc, "JIT: Could not find OSR label"); if (tc->instance->profiling) MVM_profiler_log_osr(tc, 1); } else { *(tc->interp_bytecode_start) = specialized->bytecode; *(tc->interp_cur_op) = specialized->bytecode + specialized->deopts[2 * osr_index + 1]; if (tc->instance->profiling) MVM_profiler_log_osr(tc, 0); } *(tc->interp_reg_base) = tc->cur_frame->work; }
/* Finalizes OSR. */ void MVM_spesh_osr_finalize(MVMThreadContext *tc) { /* Find deopt index using existing deopt table, for entering the updated * code later. */ MVMSpeshCandidate *specialized = tc->cur_frame->spesh_cand; MVMint32 osr_index = get_osr_deopt_finalize_index(tc, specialized); MVMJitCode *jc; /* Finish up the specialization. */ MVM_spesh_candidate_specialize(tc, tc->cur_frame->static_info, specialized); /* Resize work area if needed. */ if (specialized->num_locals > tc->cur_frame->static_info->body.num_locals) { /* Resize work area. */ MVMRegister *new_work = MVM_fixed_size_alloc_zeroed(tc, tc->instance->fsa, specialized->work_size); memcpy(new_work, tc->cur_frame->work, tc->cur_frame->static_info->body.num_locals * sizeof(MVMRegister)); MVM_fixed_size_free(tc, tc->instance->fsa, tc->cur_frame->allocd_work, tc->cur_frame->work); tc->cur_frame->work = new_work; tc->cur_frame->allocd_work = specialized->work_size; tc->cur_frame->args = tc->cur_frame->work + specialized->num_locals; } /* Resize environment if needed. */ if (specialized->num_lexicals > tc->cur_frame->static_info->body.num_lexicals) { MVMRegister *new_env = MVM_fixed_size_alloc_zeroed(tc, tc->instance->fsa, specialized->env_size); if (tc->cur_frame->allocd_env) { memcpy(new_env, tc->cur_frame->env, tc->cur_frame->static_info->body.num_lexicals * sizeof(MVMRegister)); MVM_fixed_size_free(tc, tc->instance->fsa, tc->cur_frame->allocd_env, tc->cur_frame->env); } tc->cur_frame->env = new_env; tc->cur_frame->allocd_env = specialized->env_size; } /* Sync frame with updates. */ tc->cur_frame->effective_bytecode = specialized->bytecode; tc->cur_frame->effective_handlers = specialized->handlers; tc->cur_frame->effective_spesh_slots = specialized->spesh_slots; tc->cur_frame->spesh_log_slots = NULL; tc->cur_frame->spesh_log_idx = -1; /* Sync interpreter with updates. */ jc = specialized->jitcode; if (jc && jc->num_deopts) { MVMint32 i; *(tc->interp_bytecode_start) = specialized->jitcode->bytecode; *(tc->interp_cur_op) = specialized->jitcode->bytecode; for (i = 0; i < jc->num_deopts; i++) { if (jc->deopts[i].idx == osr_index) { tc->cur_frame->jit_entry_label = jc->labels[jc->deopts[i].label]; break; } } if (i == jc->num_deopts) MVM_oops(tc, "JIT: Could not find OSR label"); if (tc->instance->profiling) MVM_profiler_log_osr(tc, 1); } else { *(tc->interp_bytecode_start) = specialized->bytecode; *(tc->interp_cur_op) = specialized->bytecode + specialized->deopts[2 * osr_index + 1]; if (tc->instance->profiling) MVM_profiler_log_osr(tc, 0); } *(tc->interp_reg_base) = tc->cur_frame->work; /* Tweak frame invocation count so future invocations will use the code * produced by OSR. */ tc->cur_frame->static_info->body.invocations += tc->cur_frame->static_info->body.spesh_threshold; }