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Refine AOT exception check when function return (#1752)

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Refine AOT exception check in the caller when returning from callee function,
remove the exception check instructions when hw bound check is enabled to
improve the performance: create guard page to trigger signal handler when
exception occurs.
This commit is contained in:
Wenyong Huang
2022-11-30 20:18:28 +08:00
committed by GitHub
parent 7cb1ebc771
commit ce3458da99
8 changed files with 163 additions and 50 deletions
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15
core/iwasm/common/wasm_exec_env.c
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@ -56,6 +56,12 @@ wasm_exec_env_create_internal(struct WASMModuleInstanceCommon *module_inst,
#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 =
@ -76,6 +82,12 @@ wasm_exec_env_create_internal(struct WASMModuleInstanceCommon *module_inst,
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:
@ -96,6 +108,9 @@ fail1:
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);