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14288f59b0
Implement 2-level Multi-tier JIT engine: tier-up from Fast JIT to LLVM JIT to get quick cold startup by Fast JIT and better performance by gradually switching to LLVM JIT when the LLVM JIT functions are compiled by the backend threads. Refer to: https://github.com/bytecodealliance/wasm-micro-runtime/issues/1302
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
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* Copyright (C) 2021 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include "jit_codecache.h"
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#include "mem_alloc.h"
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#include "jit_compiler.h"
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static void *code_cache_pool = NULL;
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static uint32 code_cache_pool_size = 0;
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static mem_allocator_t code_cache_pool_allocator = NULL;
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bool
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jit_code_cache_init(uint32 code_cache_size)
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{
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int map_prot = MMAP_PROT_READ | MMAP_PROT_WRITE | MMAP_PROT_EXEC;
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int map_flags = MMAP_MAP_NONE;
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if (!(code_cache_pool =
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os_mmap(NULL, code_cache_size, map_prot, map_flags))) {
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return false;
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}
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if (!(code_cache_pool_allocator =
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mem_allocator_create(code_cache_pool, code_cache_size))) {
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os_munmap(code_cache_pool, code_cache_size);
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code_cache_pool = NULL;
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return false;
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}
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code_cache_pool_size = code_cache_size;
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return true;
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}
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void
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jit_code_cache_destroy()
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{
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mem_allocator_destroy(code_cache_pool_allocator);
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os_munmap(code_cache_pool, code_cache_pool_size);
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}
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void *
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jit_code_cache_alloc(uint32 size)
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{
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return mem_allocator_malloc(code_cache_pool_allocator, size);
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}
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void
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jit_code_cache_free(void *ptr)
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{
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if (ptr)
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mem_allocator_free(code_cache_pool_allocator, ptr);
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}
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bool
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jit_pass_register_jitted_code(JitCompContext *cc)
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{
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uint32 jit_func_idx =
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cc->cur_wasm_func_idx - cc->cur_wasm_module->import_function_count;
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cc->cur_wasm_module->fast_jit_func_ptrs[jit_func_idx] =
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cc->cur_wasm_func->fast_jit_jitted_code = cc->jitted_addr_begin;
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return true;
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}
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