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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "wasm_exec_env.h"
#include "wasm_runtime_common.h"
#if WASM_ENABLE_INTERP != 0
#include "../interpreter/wasm_runtime.h"
#endif
#if WASM_ENABLE_AOT != 0
#include "../aot/aot_runtime.h"
#endif
#if WASM_ENABLE_AOT != 0
#include "aot_runtime.h"
#endif
#if WASM_ENABLE_THREAD_MGR != 0
#include "../libraries/thread-mgr/thread_manager.h"
#if WASM_ENABLE_DEBUG_INTERP != 0
#include "../libraries/debug-engine/debug_engine.h"
#endif
#endif
WASMExecEnv *
wasm_exec_env_create_internal(struct WASMModuleInstanceCommon *module_inst,
uint32 stack_size)
{
uint64 total_size =
offsetof(WASMExecEnv, wasm_stack.s.bottom) + (uint64)stack_size;
WASMExecEnv *exec_env;
if (total_size >= UINT32_MAX
|| !(exec_env = wasm_runtime_malloc((uint32)total_size)))
return NULL;
memset(exec_env, 0, (uint32)total_size);
#if WASM_ENABLE_AOT != 0
if (!(exec_env->argv_buf = wasm_runtime_malloc(sizeof(uint32) * 64))) {
goto fail1;
}
#endif
#if WASM_ENABLE_THREAD_MGR != 0
if (os_mutex_init(&exec_env->wait_lock) != 0)
goto fail2;
if (os_cond_init(&exec_env->wait_cond) != 0)
goto fail3;
#if WASM_ENABLE_DEBUG_INTERP != 0
if (!(exec_env->current_status = wasm_cluster_create_exenv_status()))
goto fail4;
#endif
#endif
#ifdef OS_ENABLE_HW_BOUND_CHECK
if (!(exec_env->exce_check_guard_page =
os_mmap(NULL, os_getpagesize(), MMAP_PROT_NONE, MMAP_MAP_NONE)))
goto fail5;
#endif
exec_env->module_inst = module_inst;
exec_env->wasm_stack_size = stack_size;
exec_env->wasm_stack.s.top_boundary =
exec_env->wasm_stack.s.bottom + stack_size;
exec_env->wasm_stack.s.top = exec_env->wasm_stack.s.bottom;
#if WASM_ENABLE_AOT != 0
if (module_inst->module_type == Wasm_Module_AoT) {
AOTModuleInstance *i = (AOTModuleInstance *)module_inst;
AOTModule *m = (AOTModule *)i->module;
exec_env->native_symbol = m->native_symbol_list;
}
#endif
#if WASM_ENABLE_MEMORY_TRACING != 0
wasm_runtime_dump_exec_env_mem_consumption(exec_env);
#endif
return exec_env;
#ifdef OS_ENABLE_HW_BOUND_CHECK
fail5:
#if WASM_ENABLE_THREAD_MGR != 0 && WASM_ENABLE_DEBUG_INTERP != 0
wasm_cluster_destroy_exenv_status(exec_env->current_status);
#endif
#endif
#if WASM_ENABLE_THREAD_MGR != 0
#if WASM_ENABLE_DEBUG_INTERP != 0
fail4:
os_cond_destroy(&exec_env->wait_cond);
#endif
fail3:
os_mutex_destroy(&exec_env->wait_lock);
fail2:
#endif
#if WASM_ENABLE_AOT != 0
wasm_runtime_free(exec_env->argv_buf);
fail1:
#endif
wasm_runtime_free(exec_env);
return NULL;
}
void
wasm_exec_env_destroy_internal(WASMExecEnv *exec_env)
{
#ifdef OS_ENABLE_HW_BOUND_CHECK
os_munmap(exec_env->exce_check_guard_page, os_getpagesize());
#endif
#if WASM_ENABLE_THREAD_MGR != 0
os_mutex_destroy(&exec_env->wait_lock);
os_cond_destroy(&exec_env->wait_cond);
#if WASM_ENABLE_DEBUG_INTERP != 0
wasm_cluster_destroy_exenv_status(exec_env->current_status);
#endif
#endif
#if WASM_ENABLE_AOT != 0
wasm_runtime_free(exec_env->argv_buf);
#endif
wasm_runtime_free(exec_env);
}
WASMExecEnv *
wasm_exec_env_create(struct WASMModuleInstanceCommon *module_inst,
uint32 stack_size)
{
#if WASM_ENABLE_THREAD_MGR != 0
WASMCluster *cluster;
#endif
WASMExecEnv *exec_env =
wasm_exec_env_create_internal(module_inst, stack_size);
if (!exec_env)
return NULL;
#if WASM_ENABLE_INTERP != 0
/* Set the aux_stack_boundary and aux_stack_bottom */
if (module_inst->module_type == Wasm_Module_Bytecode) {
WASMModule *module = ((WASMModuleInstance *)module_inst)->module;
exec_env->aux_stack_bottom.bottom = module->aux_stack_bottom;
exec_env->aux_stack_boundary.boundary =
module->aux_stack_bottom - module->aux_stack_size;
}
#endif
#if WASM_ENABLE_AOT != 0
/* Set the aux_stack_boundary and aux_stack_bottom */
if (module_inst->module_type == Wasm_Module_AoT) {
AOTModule *module =
(AOTModule *)((AOTModuleInstance *)module_inst)->module;
exec_env->aux_stack_bottom.bottom = module->aux_stack_bottom;
exec_env->aux_stack_boundary.boundary =
module->aux_stack_bottom - module->aux_stack_size;
}
#endif
#if WASM_ENABLE_THREAD_MGR != 0
/* Create a new cluster for this exec_env */
if (!(cluster = wasm_cluster_create(exec_env))) {
wasm_exec_env_destroy_internal(exec_env);
return NULL;
}
#endif /* end of WASM_ENABLE_THREAD_MGR */
return exec_env;
}
void
wasm_exec_env_destroy(WASMExecEnv *exec_env)
{
#if WASM_ENABLE_THREAD_MGR != 0
/* Wait for all sub-threads */
WASMCluster *cluster = wasm_exec_env_get_cluster(exec_env);
if (cluster) {
wasm_cluster_wait_for_all_except_self(cluster, exec_env);
#if WASM_ENABLE_DEBUG_INTERP != 0
/* Must fire exit event after other threads exits, otherwise
the stopped thread will be overrided by other threads */
wasm_cluster_thread_exited(exec_env);
#endif
/* We have waited for other threads, this is the only alive thread, so
* we don't acquire cluster->lock because the cluster will be destroyed
* inside this function */
wasm_cluster_del_exec_env(cluster, exec_env);
}
#endif /* end of WASM_ENABLE_THREAD_MGR */
wasm_exec_env_destroy_internal(exec_env);
}
WASMModuleInstanceCommon *
wasm_exec_env_get_module_inst(WASMExecEnv *exec_env)
{
return exec_env->module_inst;
}
void
wasm_exec_env_set_module_inst(WASMExecEnv *exec_env,
WASMModuleInstanceCommon *const module_inst)
{
exec_env->module_inst = module_inst;
}
void
wasm_exec_env_set_thread_info(WASMExecEnv *exec_env)
{
uint8 *stack_boundary = os_thread_get_stack_boundary();
#if WASM_ENABLE_THREAD_MGR != 0
os_mutex_lock(&exec_env->wait_lock);
#endif
exec_env->handle = os_self_thread();
exec_env->native_stack_boundary =
stack_boundary ? stack_boundary + WASM_STACK_GUARD_SIZE : NULL;
exec_env->native_stack_top_min = (void *)UINTPTR_MAX;
#if WASM_ENABLE_THREAD_MGR != 0
os_mutex_unlock(&exec_env->wait_lock);
#endif
}
#if WASM_ENABLE_THREAD_MGR != 0
void *
wasm_exec_env_get_thread_arg(WASMExecEnv *exec_env)
{
return exec_env->thread_arg;
}
void
wasm_exec_env_set_thread_arg(WASMExecEnv *exec_env, void *thread_arg)
{
exec_env->thread_arg = thread_arg;
}
#endif
#ifdef OS_ENABLE_HW_BOUND_CHECK
void
wasm_exec_env_push_jmpbuf(WASMExecEnv *exec_env, WASMJmpBuf *jmpbuf)
{
jmpbuf->prev = exec_env->jmpbuf_stack_top;
exec_env->jmpbuf_stack_top = jmpbuf;
}
WASMJmpBuf *
wasm_exec_env_pop_jmpbuf(WASMExecEnv *exec_env)
{
WASMJmpBuf *stack_top = exec_env->jmpbuf_stack_top;
if (stack_top) {
exec_env->jmpbuf_stack_top = stack_top->prev;
return stack_top;
}
return NULL;
}
#endif
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