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wasm_runtime_common.c
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wasm_runtime_common.c
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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "bh_platform.h"
#include "bh_common.h"
#include "bh_assert.h"
#include "bh_log.h"
#include "wasm_runtime_common.h"
#include "wasm_memory.h"
#if WASM_ENABLE_INTERP != 0
#include "../interpreter/wasm_runtime.h"
#endif
#if WASM_ENABLE_AOT != 0
#include "../aot/aot_runtime.h"
#if WASM_ENABLE_DEBUG_AOT != 0
#include "../aot/debug/jit_debug.h"
#endif
#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
#if WASM_ENABLE_SHARED_MEMORY != 0
#include "wasm_shared_memory.h"
#endif
#if WASM_ENABLE_FAST_JIT != 0
#include "../fast-jit/jit_compiler.h"
#endif
#if WASM_ENABLE_JIT != 0 || WASM_ENABLE_WAMR_COMPILER != 0
#include "../compilation/aot_llvm.h"
#endif
#include "../common/wasm_c_api_internal.h"
#include "../../version.h"
/**
* For runtime build, BH_MALLOC/BH_FREE should be defined as
* wasm_runtime_malloc/wasm_runtime_free.
*/
#define CHECK(a) CHECK1(a)
#define CHECK1(a) SHOULD_BE_##a
#define SHOULD_BE_wasm_runtime_malloc 1
#if !CHECK(BH_MALLOC)
#error unexpected BH_MALLOC
#endif
#undef SHOULD_BE_wasm_runtime_malloc
#define SHOULD_BE_wasm_runtime_free 1
#if !CHECK(BH_FREE)
#error unexpected BH_FREE
#endif
#undef SHOULD_BE_wasm_runtime_free
#undef CHECK
#undef CHECK1
#if WASM_ENABLE_MULTI_MODULE != 0
/**
* A safety insurance to prevent
* circular depencies which leads stack overflow
* try to break early
*/
typedef struct LoadingModule {
bh_list_link l;
/* point to a string pool */
const char *module_name;
} LoadingModule;
static bh_list loading_module_list_head;
static bh_list *const loading_module_list = &loading_module_list_head;
static korp_mutex loading_module_list_lock;
/**
* A list to store all exported functions/globals/memories/tables
* of every fully loaded module
*/
static bh_list registered_module_list_head;
static bh_list *const registered_module_list = ®istered_module_list_head;
static korp_mutex registered_module_list_lock;
static void
wasm_runtime_destroy_registered_module_list();
#endif /* WASM_ENABLE_MULTI_MODULE */
#define E_TYPE_XIP 4
#if WASM_ENABLE_REF_TYPES != 0
/* Initialize externref hashmap */
static bool
wasm_externref_map_init();
/* Destroy externref hashmap */
static void
wasm_externref_map_destroy();
#endif /* WASM_ENABLE_REF_TYPES */
static void
set_error_buf(char *error_buf, uint32 error_buf_size, const char *string)
{
if (error_buf != NULL)
snprintf(error_buf, error_buf_size, "%s", string);
}
static void *
runtime_malloc(uint64 size, WASMModuleInstanceCommon *module_inst,
char *error_buf, uint32 error_buf_size)
{
void *mem;
if (size >= UINT32_MAX || !(mem = wasm_runtime_malloc((uint32)size))) {
if (module_inst != NULL) {
wasm_runtime_set_exception(module_inst, "allocate memory failed");
}
else if (error_buf != NULL) {
set_error_buf(error_buf, error_buf_size, "allocate memory failed");
}
return NULL;
}
memset(mem, 0, (uint32)size);
return mem;
}
#if WASM_ENABLE_FAST_JIT != 0
static JitCompOptions jit_options = { 0 };
#endif
#ifdef OS_ENABLE_HW_BOUND_CHECK
/* The exec_env of thread local storage, set before calling function
and used in signal handler, as we cannot get it from the argument
of signal handler */
static os_thread_local_attribute WASMExecEnv *exec_env_tls = NULL;
#ifndef BH_PLATFORM_WINDOWS
static void
runtime_signal_handler(void *sig_addr)
{
WASMModuleInstance *module_inst;
WASMMemoryInstance *memory_inst;
WASMJmpBuf *jmpbuf_node;
uint8 *mapped_mem_start_addr = NULL;
uint8 *mapped_mem_end_addr = NULL;
uint32 page_size = os_getpagesize();
#if WASM_DISABLE_STACK_HW_BOUND_CHECK == 0
uint8 *stack_min_addr;
uint32 guard_page_count = STACK_OVERFLOW_CHECK_GUARD_PAGE_COUNT;
#endif
/* Check whether current thread is running wasm function */
if (exec_env_tls && exec_env_tls->handle == os_self_thread()
&& (jmpbuf_node = exec_env_tls->jmpbuf_stack_top)) {
/* Get mapped mem info of current instance */
module_inst = (WASMModuleInstance *)exec_env_tls->module_inst;
/* Get the default memory instance */
memory_inst = wasm_get_default_memory(module_inst);
if (memory_inst) {
mapped_mem_start_addr = memory_inst->memory_data;
mapped_mem_end_addr = memory_inst->memory_data + 8 * (uint64)BH_GB;
}
#if WASM_DISABLE_STACK_HW_BOUND_CHECK == 0
/* Get stack info of current thread */
stack_min_addr = os_thread_get_stack_boundary();
#endif
if (memory_inst
&& (mapped_mem_start_addr <= (uint8 *)sig_addr
&& (uint8 *)sig_addr < mapped_mem_end_addr)) {
/* The address which causes segmentation fault is inside
the memory instance's guard regions */
wasm_set_exception(module_inst, "out of bounds memory access");
os_longjmp(jmpbuf_node->jmpbuf, 1);
}
#if WASM_DISABLE_STACK_HW_BOUND_CHECK == 0
else if (stack_min_addr - page_size <= (uint8 *)sig_addr
&& (uint8 *)sig_addr
< stack_min_addr + page_size * guard_page_count) {
/* The address which causes segmentation fault is inside
native thread's guard page */
wasm_set_exception(module_inst, "native stack overflow");
os_longjmp(jmpbuf_node->jmpbuf, 1);
}
#endif
else if (exec_env_tls->exce_check_guard_page <= (uint8 *)sig_addr
&& (uint8 *)sig_addr
< exec_env_tls->exce_check_guard_page + page_size) {
bh_assert(wasm_get_exception(module_inst));
os_longjmp(jmpbuf_node->jmpbuf, 1);
}
}
}
#else
static LONG
runtime_exception_handler(EXCEPTION_POINTERS *exce_info)
{
PEXCEPTION_RECORD ExceptionRecord = exce_info->ExceptionRecord;
uint8 *sig_addr = (uint8 *)ExceptionRecord->ExceptionInformation[1];
WASMModuleInstance *module_inst;
WASMMemoryInstance *memory_inst;
WASMJmpBuf *jmpbuf_node;
uint8 *mapped_mem_start_addr = NULL;
uint8 *mapped_mem_end_addr = NULL;
uint32 page_size = os_getpagesize();
if (exec_env_tls && exec_env_tls->handle == os_self_thread()
&& (jmpbuf_node = exec_env_tls->jmpbuf_stack_top)) {
module_inst = (WASMModuleInstance *)exec_env_tls->module_inst;
if (ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION) {
/* Get the default memory instance */
memory_inst = wasm_get_default_memory(module_inst);
if (memory_inst) {
mapped_mem_start_addr = memory_inst->memory_data;
mapped_mem_end_addr =
memory_inst->memory_data + 8 * (uint64)BH_GB;
}
if (memory_inst && mapped_mem_start_addr <= (uint8 *)sig_addr
&& (uint8 *)sig_addr < mapped_mem_end_addr) {
/* The address which causes segmentation fault is inside
the memory instance's guard regions.
Set exception and let the wasm func continue to run, when
the wasm func returns, the caller will check whether the
exception is thrown and return to runtime. */
wasm_set_exception(module_inst, "out of bounds memory access");
if (module_inst->module_type == Wasm_Module_Bytecode) {
/* Continue to search next exception handler for
interpreter mode as it can be caught by
`__try { .. } __except { .. }` sentences in
wasm_runtime.c */
return EXCEPTION_CONTINUE_SEARCH;
}
else {
/* Skip current instruction and continue to run for
AOT mode. TODO: implement unwind support for AOT
code in Windows platform */
exce_info->ContextRecord->Rip++;
return EXCEPTION_CONTINUE_EXECUTION;
}
}
else if (exec_env_tls->exce_check_guard_page <= (uint8 *)sig_addr
&& (uint8 *)sig_addr
< exec_env_tls->exce_check_guard_page + page_size) {
bh_assert(wasm_get_exception(module_inst));
if (module_inst->module_type == Wasm_Module_Bytecode) {
return EXCEPTION_CONTINUE_SEARCH;
}
else {
exce_info->ContextRecord->Rip++;
return EXCEPTION_CONTINUE_EXECUTION;
}
}
}
#if WASM_DISABLE_STACK_HW_BOUND_CHECK == 0
else if (ExceptionRecord->ExceptionCode == EXCEPTION_STACK_OVERFLOW) {
/* Set stack overflow exception and let the wasm func continue
to run, when the wasm func returns, the caller will check
whether the exception is thrown and return to runtime, and
the damaged stack will be recovered by _resetstkoflw(). */
wasm_set_exception(module_inst, "native stack overflow");
if (module_inst->module_type == Wasm_Module_Bytecode) {
return EXCEPTION_CONTINUE_SEARCH;
}
else {
return EXCEPTION_CONTINUE_EXECUTION;
}
}
#endif
}
os_printf("Unhandled exception thrown: exception code: 0x%lx, "
"exception address: %p, exception information: %p\n",
ExceptionRecord->ExceptionCode, ExceptionRecord->ExceptionAddress,
sig_addr);
return EXCEPTION_CONTINUE_SEARCH;
}
#endif /* end of BH_PLATFORM_WINDOWS */
static bool
runtime_signal_init()
{
#ifndef BH_PLATFORM_WINDOWS
return os_thread_signal_init(runtime_signal_handler) == 0 ? true : false;
#else
if (os_thread_signal_init() != 0)
return false;
if (!AddVectoredExceptionHandler(1, runtime_exception_handler)) {
os_thread_signal_destroy();
return false;
}
#endif
return true;
}
static void
runtime_signal_destroy()
{
#ifdef BH_PLATFORM_WINDOWS
RemoveVectoredExceptionHandler(runtime_exception_handler);
#endif
os_thread_signal_destroy();
}
void
wasm_runtime_set_exec_env_tls(WASMExecEnv *exec_env)
{
exec_env_tls = exec_env;
}
WASMExecEnv *
wasm_runtime_get_exec_env_tls()
{
return exec_env_tls;
}
#endif /* end of OS_ENABLE_HW_BOUND_CHECK */
static bool
wasm_runtime_env_init()
{
if (bh_platform_init() != 0)
return false;
if (wasm_native_init() == false) {
goto fail1;
}
#if WASM_ENABLE_MULTI_MODULE
if (BHT_OK != os_mutex_init(®istered_module_list_lock)) {
goto fail2;
}
if (BHT_OK != os_mutex_init(&loading_module_list_lock)) {
goto fail3;
}
#endif
#if WASM_ENABLE_SHARED_MEMORY
if (!wasm_shared_memory_init()) {
goto fail4;
}
#endif
#if (WASM_ENABLE_WAMR_COMPILER == 0) && (WASM_ENABLE_THREAD_MGR != 0)
if (!thread_manager_init()) {
goto fail5;
}
#endif
#ifdef OS_ENABLE_HW_BOUND_CHECK
if (!runtime_signal_init()) {
goto fail6;
}
#endif
#if WASM_ENABLE_AOT != 0
#if WASM_ENABLE_DEBUG_AOT != 0
if (!jit_debug_engine_init()) {
goto fail7;
}
#endif
#endif
#if WASM_ENABLE_REF_TYPES != 0
if (!wasm_externref_map_init()) {
goto fail8;
}
#endif
#if WASM_ENABLE_FAST_JIT != 0
if (!jit_compiler_init(&jit_options)) {
goto fail9;
}
#endif
#if WASM_ENABLE_JIT != 0 || WASM_ENABLE_WAMR_COMPILER != 0
if (!aot_compiler_init()) {
goto fail10;
}
#endif
return true;
#if WASM_ENABLE_JIT != 0 || WASM_ENABLE_WAMR_COMPILER != 0
fail10:
#if WASM_ENABLE_FAST_JIT != 0
jit_compiler_destroy();
#endif
#endif
#if WASM_ENABLE_FAST_JIT != 0
fail9:
#if WASM_ENABLE_REF_TYPES != 0
wasm_externref_map_destroy();
#endif
#endif
#if WASM_ENABLE_REF_TYPES != 0
fail8:
#endif
#if WASM_ENABLE_AOT != 0
#if WASM_ENABLE_DEBUG_AOT != 0
jit_debug_engine_destroy();
fail7:
#endif
#endif
#ifdef OS_ENABLE_HW_BOUND_CHECK
runtime_signal_destroy();
fail6:
#endif
#if (WASM_ENABLE_WAMR_COMPILER == 0) && (WASM_ENABLE_THREAD_MGR != 0)
thread_manager_destroy();
fail5:
#endif
#if WASM_ENABLE_SHARED_MEMORY
wasm_shared_memory_destroy();
fail4:
#endif
#if WASM_ENABLE_MULTI_MODULE
os_mutex_destroy(&loading_module_list_lock);
fail3:
os_mutex_destroy(®istered_module_list_lock);
fail2:
#endif
wasm_native_destroy();
fail1:
bh_platform_destroy();
return false;
}
static bool
wasm_runtime_exec_env_check(WASMExecEnv *exec_env)
{
return exec_env && exec_env->module_inst && exec_env->wasm_stack_size > 0
&& exec_env->wasm_stack.s.top_boundary
== exec_env->wasm_stack.s.bottom + exec_env->wasm_stack_size
&& exec_env->wasm_stack.s.top <= exec_env->wasm_stack.s.top_boundary;
}
bool
wasm_runtime_init()
{
if (!wasm_runtime_memory_init(Alloc_With_System_Allocator, NULL))
return false;
if (!wasm_runtime_env_init()) {
wasm_runtime_memory_destroy();
return false;
}
return true;
}
void
wasm_runtime_destroy()
{
#if WASM_ENABLE_REF_TYPES != 0
wasm_externref_map_destroy();
#endif
#if WASM_ENABLE_AOT != 0
#if WASM_ENABLE_DEBUG_AOT != 0
jit_debug_engine_destroy();
#endif
#endif
#ifdef OS_ENABLE_HW_BOUND_CHECK
runtime_signal_destroy();
#endif
/* runtime env destroy */
#if WASM_ENABLE_MULTI_MODULE
wasm_runtime_destroy_loading_module_list();
os_mutex_destroy(&loading_module_list_lock);
wasm_runtime_destroy_registered_module_list();
os_mutex_destroy(®istered_module_list_lock);
#endif
#if WASM_ENABLE_JIT != 0 || WASM_ENABLE_WAMR_COMPILER != 0
/* Destroy LLVM-JIT compiler after destroying the modules
* loaded by multi-module feature, since these modules may
* create backend threads to compile the wasm functions,
* which may access the LLVM resources. We wait until they
* finish the compilation to avoid accessing the destroyed
* resources in the compilation threads.
*/
aot_compiler_destroy();
#endif
#if WASM_ENABLE_FAST_JIT != 0
/* Destroy Fast-JIT compiler after destroying the modules
* loaded by multi-module feature, since the Fast JIT's
* code cache allocator may be used by these modules.
*/
jit_compiler_destroy();
#endif
#if WASM_ENABLE_SHARED_MEMORY
wasm_shared_memory_destroy();
#endif
#if (WASM_ENABLE_WAMR_COMPILER == 0) && (WASM_ENABLE_THREAD_MGR != 0)
#if WASM_ENABLE_DEBUG_INTERP != 0
wasm_debug_engine_destroy();
#endif
thread_manager_destroy();
#endif
wasm_native_destroy();
bh_platform_destroy();
wasm_runtime_memory_destroy();
}
bool
wasm_runtime_full_init(RuntimeInitArgs *init_args)
{
if (!wasm_runtime_memory_init(init_args->mem_alloc_type,
&init_args->mem_alloc_option))
return false;
#if WASM_ENABLE_FAST_JIT != 0
jit_options.code_cache_size = init_args->fast_jit_code_cache_size;
#endif
if (!wasm_runtime_env_init()) {
wasm_runtime_memory_destroy();
return false;
}
#if WASM_ENABLE_DEBUG_INTERP != 0
if (strlen(init_args->ip_addr))
if (!wasm_debug_engine_init(init_args->ip_addr,
init_args->instance_port)) {
wasm_runtime_destroy();
return false;
}
#endif
if (init_args->n_native_symbols > 0
&& !wasm_runtime_register_natives(init_args->native_module_name,
init_args->native_symbols,
init_args->n_native_symbols)) {
wasm_runtime_destroy();
return false;
}
#if WASM_ENABLE_THREAD_MGR != 0
wasm_cluster_set_max_thread_num(init_args->max_thread_num);
#endif
return true;
}
PackageType
get_package_type(const uint8 *buf, uint32 size)
{
#if (WASM_ENABLE_WORD_ALIGN_READ != 0)
uint32 buf32 = *(uint32 *)buf;
buf = (const uint8 *)&buf32;
#endif
if (buf && size >= 4) {
if (buf[0] == '\0' && buf[1] == 'a' && buf[2] == 's' && buf[3] == 'm')
return Wasm_Module_Bytecode;
if (buf[0] == '\0' && buf[1] == 'a' && buf[2] == 'o' && buf[3] == 't')
return Wasm_Module_AoT;
}
return Package_Type_Unknown;
}
#if WASM_ENABLE_AOT != 0
static uint8 *
align_ptr(const uint8 *p, uint32 b)
{
uintptr_t v = (uintptr_t)p;
uintptr_t m = b - 1;
return (uint8 *)((v + m) & ~m);
}
#define CHECK_BUF(buf, buf_end, length) \
do { \
if ((uintptr_t)buf + length < (uintptr_t)buf \
|| (uintptr_t)buf + length > (uintptr_t)buf_end) \
return false; \
} while (0)
#define read_uint16(p, p_end, res) \
do { \
p = (uint8 *)align_ptr(p, sizeof(uint16)); \
CHECK_BUF(p, p_end, sizeof(uint16)); \
res = *(uint16 *)p; \
p += sizeof(uint16); \
} while (0)
#define read_uint32(p, p_end, res) \
do { \
p = (uint8 *)align_ptr(p, sizeof(uint32)); \
CHECK_BUF(p, p_end, sizeof(uint32)); \
res = *(uint32 *)p; \
p += sizeof(uint32); \
} while (0)
bool
wasm_runtime_is_xip_file(const uint8 *buf, uint32 size)
{
const uint8 *p = buf, *p_end = buf + size;
uint32 section_type, section_size;
uint16 e_type;
if (get_package_type(buf, size) != Wasm_Module_AoT)
return false;
CHECK_BUF(p, p_end, 8);
p += 8;
while (p < p_end) {
read_uint32(p, p_end, section_type);
read_uint32(p, p_end, section_size);
CHECK_BUF(p, p_end, section_size);
if (section_type == AOT_SECTION_TYPE_TARGET_INFO) {
p += 4;
read_uint16(p, p_end, e_type);
return (e_type == E_TYPE_XIP) ? true : false;
}
else if (section_type >= AOT_SECTION_TYPE_SIGANATURE) {
return false;
}
p += section_size;
}
return false;
}
#endif /* end of WASM_ENABLE_AOT */
#if (WASM_ENABLE_THREAD_MGR != 0) && (WASM_ENABLE_DEBUG_INTERP != 0)
uint32
wasm_runtime_start_debug_instance_with_port(WASMExecEnv *exec_env, int32_t port)
{
WASMModuleInstanceCommon *module_inst =
wasm_runtime_get_module_inst(exec_env);
WASMCluster *cluster = wasm_exec_env_get_cluster(exec_env);
bh_assert(module_inst);
bh_assert(cluster);
if (module_inst->module_type != Wasm_Module_Bytecode) {
LOG_WARNING("Attempt to create a debug instance for an AOT module");
return 0;
}
if (cluster->debug_inst) {
LOG_WARNING("Cluster already bind to a debug instance");
return cluster->debug_inst->control_thread->port;
}
if (wasm_debug_instance_create(cluster, port)) {
return cluster->debug_inst->control_thread->port;
}
return 0;
}
uint32
wasm_runtime_start_debug_instance(WASMExecEnv *exec_env)
{
return wasm_runtime_start_debug_instance_with_port(exec_env, -1);
}
#endif
#if WASM_ENABLE_MULTI_MODULE != 0
static module_reader reader;
static module_destroyer destroyer;
void
wasm_runtime_set_module_reader(const module_reader reader_cb,
const module_destroyer destroyer_cb)
{
reader = reader_cb;
destroyer = destroyer_cb;
}
module_reader
wasm_runtime_get_module_reader()
{
return reader;
}
module_destroyer
wasm_runtime_get_module_destroyer()
{
return destroyer;
}
static WASMRegisteredModule *
wasm_runtime_find_module_registered_by_reference(WASMModuleCommon *module)
{
WASMRegisteredModule *reg_module = NULL;
os_mutex_lock(®istered_module_list_lock);
reg_module = bh_list_first_elem(registered_module_list);
while (reg_module && module != reg_module->module) {
reg_module = bh_list_elem_next(reg_module);
}
os_mutex_unlock(®istered_module_list_lock);
return reg_module;
}
bool
wasm_runtime_register_module_internal(const char *module_name,
WASMModuleCommon *module,
uint8 *orig_file_buf,
uint32 orig_file_buf_size,
char *error_buf, uint32 error_buf_size)
{
WASMRegisteredModule *node = NULL;
node = wasm_runtime_find_module_registered_by_reference(module);
if (node) { /* module has been registered */
if (node->module_name) { /* module has name */
if (!module_name || strcmp(node->module_name, module_name)) {
/* module has different name */
LOG_DEBUG("module(%p) has been registered with name %s", module,
node->module_name);
set_error_buf(error_buf, error_buf_size,
"Register module failed: "
"failed to rename the module");
return false;
}
else {
/* module has the same name */
LOG_DEBUG(
"module(%p) has been registered with the same name %s",
module, node->module_name);
return true;
}
}
else {
/* module has empyt name, reset it */
node->module_name = module_name;
return true;
}
}
/* module hasn't been registered */
node = runtime_malloc(sizeof(WASMRegisteredModule), NULL, NULL, 0);
if (!node) {
LOG_DEBUG("malloc WASMRegisteredModule failed. SZ=%d",
sizeof(WASMRegisteredModule));
return false;
}
/* share the string and the module */
node->module_name = module_name;
node->module = module;
node->orig_file_buf = orig_file_buf;
node->orig_file_buf_size = orig_file_buf_size;
os_mutex_lock(®istered_module_list_lock);
bh_list_status ret = bh_list_insert(registered_module_list, node);
bh_assert(BH_LIST_SUCCESS == ret);
(void)ret;
os_mutex_unlock(®istered_module_list_lock);
return true;
}
bool
wasm_runtime_register_module(const char *module_name, WASMModuleCommon *module,
char *error_buf, uint32 error_buf_size)
{
if (!error_buf || !error_buf_size) {
LOG_ERROR("error buffer is required");
return false;
}
if (!module_name || !module) {
LOG_DEBUG("module_name and module are required");
set_error_buf(error_buf, error_buf_size,
"Register module failed: "
"module_name and module are required");
return false;
}
if (wasm_runtime_is_built_in_module(module_name)) {
LOG_DEBUG("%s is a built-in module name", module_name);
set_error_buf(error_buf, error_buf_size,
"Register module failed: "
"can not register as a built-in module");
return false;
}
return wasm_runtime_register_module_internal(module_name, module, NULL, 0,
error_buf, error_buf_size);
}
void
wasm_runtime_unregister_module(const WASMModuleCommon *module)
{
WASMRegisteredModule *registered_module = NULL;
os_mutex_lock(®istered_module_list_lock);
registered_module = bh_list_first_elem(registered_module_list);
while (registered_module && module != registered_module->module) {
registered_module = bh_list_elem_next(registered_module);
}
/* it does not matter if it is not exist. after all, it is gone */
if (registered_module) {
bh_list_remove(registered_module_list, registered_module);
wasm_runtime_free(registered_module);
}
os_mutex_unlock(®istered_module_list_lock);
}
WASMModuleCommon *
wasm_runtime_find_module_registered(const char *module_name)
{
WASMRegisteredModule *module = NULL, *module_next;
os_mutex_lock(®istered_module_list_lock);
module = bh_list_first_elem(registered_module_list);
while (module) {
module_next = bh_list_elem_next(module);
if (module->module_name && !strcmp(module_name, module->module_name)) {
break;
}
module = module_next;
}
os_mutex_unlock(®istered_module_list_lock);
return module ? module->module : NULL;
}
/*
* simply destroy all
*/
static void
wasm_runtime_destroy_registered_module_list()
{
WASMRegisteredModule *reg_module = NULL;
os_mutex_lock(®istered_module_list_lock);
reg_module = bh_list_first_elem(registered_module_list);
while (reg_module) {
WASMRegisteredModule *next_reg_module = bh_list_elem_next(reg_module);
bh_list_remove(registered_module_list, reg_module);
/* now, it is time to release every module in the runtime */
if (reg_module->module->module_type == Wasm_Module_Bytecode) {
#if WASM_ENABLE_INTERP != 0
wasm_unload((WASMModule *)reg_module->module);
#endif
}
else {
#if WASM_ENABLE_AOT != 0
aot_unload((AOTModule *)reg_module->module);
#endif
}
/* destroy the file buffer */
if (destroyer && reg_module->orig_file_buf) {
destroyer(reg_module->orig_file_buf,
reg_module->orig_file_buf_size);
reg_module->orig_file_buf = NULL;
reg_module->orig_file_buf_size = 0;
}
wasm_runtime_free(reg_module);
reg_module = next_reg_module;
}
os_mutex_unlock(®istered_module_list_lock);
}
bool
wasm_runtime_add_loading_module(const char *module_name, char *error_buf,
uint32 error_buf_size)
{
LOG_DEBUG("add %s into a loading list", module_name);
LoadingModule *loadingModule =
runtime_malloc(sizeof(LoadingModule), NULL, error_buf, error_buf_size);
if (!loadingModule) {
return false;
}
/* share the incoming string */
loadingModule->module_name = module_name;
os_mutex_lock(&loading_module_list_lock);
bh_list_status ret = bh_list_insert(loading_module_list, loadingModule);
bh_assert(BH_LIST_SUCCESS == ret);
(void)ret;
os_mutex_unlock(&loading_module_list_lock);
return true;
}
void
wasm_runtime_delete_loading_module(const char *module_name)
{
LOG_DEBUG("delete %s from a loading list", module_name);
LoadingModule *module = NULL;
os_mutex_lock(&loading_module_list_lock);
module = bh_list_first_elem(loading_module_list);
while (module && strcmp(module->module_name, module_name)) {
module = bh_list_elem_next(module);
}
/* it does not matter if it is not exist. after all, it is gone */
if (module) {
bh_list_remove(loading_module_list, module);
wasm_runtime_free(module);
}
os_mutex_unlock(&loading_module_list_lock);
}
bool
wasm_runtime_is_loading_module(const char *module_name)
{
LOG_DEBUG("find %s in a loading list", module_name);
LoadingModule *module = NULL;
os_mutex_lock(&loading_module_list_lock);
module = bh_list_first_elem(loading_module_list);
while (module && strcmp(module_name, module->module_name)) {
module = bh_list_elem_next(module);
}
os_mutex_unlock(&loading_module_list_lock);
return module != NULL;
}
void
wasm_runtime_destroy_loading_module_list()
{
LoadingModule *module = NULL;
os_mutex_lock(&loading_module_list_lock);
module = bh_list_first_elem(loading_module_list);
while (module) {
LoadingModule *next_module = bh_list_elem_next(module);
bh_list_remove(loading_module_list, module);
/*
* will not free the module_name since it is
* shared one of the const string pool
*/
wasm_runtime_free(module);
module = next_module;
}
os_mutex_unlock(&loading_module_list_lock);
}
#endif /* WASM_ENABLE_MULTI_MODULE */
bool
wasm_runtime_is_built_in_module(const char *module_name)
{
return (!strcmp("env", module_name) || !strcmp("wasi_unstable", module_name)
|| !strcmp("wasi_snapshot_preview1", module_name)
#if WASM_ENABLE_SPEC_TEST != 0
|| !strcmp("spectest", module_name)
#endif
|| !strcmp("", module_name));
}
#if WASM_ENABLE_THREAD_MGR != 0
bool
wasm_exec_env_set_aux_stack(WASMExecEnv *exec_env, uint32 start_offset,
uint32 size)
{
WASMModuleInstanceCommon *module_inst =
wasm_exec_env_get_module_inst(exec_env);
#if WASM_ENABLE_INTERP != 0
if (module_inst->module_type == Wasm_Module_Bytecode) {
return wasm_set_aux_stack(exec_env, start_offset, size);
}
#endif
#if WASM_ENABLE_AOT != 0
if (module_inst->module_type == Wasm_Module_AoT) {
return aot_set_aux_stack(exec_env, start_offset, size);
}
#endif
return false;
}
bool
wasm_exec_env_get_aux_stack(WASMExecEnv *exec_env, uint32 *start_offset,
uint32 *size)
{
WASMModuleInstanceCommon *module_inst =
wasm_exec_env_get_module_inst(exec_env);
#if WASM_ENABLE_INTERP != 0
if (module_inst->module_type == Wasm_Module_Bytecode) {
return wasm_get_aux_stack(exec_env, start_offset, size);
}