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Allow to set native stack boundary to exec_env (#3862)

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Add runtime API wasm_runtime_set_native_stack_boundary.

p.s. https://github.com/bytecodealliance/wasm-micro-runtime/issues/3816
This commit is contained in:
Wenyong Huang 2024-10-18 12:49:57 +08:00 committed by GitHub
parent 7e625a0624
commit 74d2427fdc
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GPG Key ID: B5690EEEBB952194
5 changed files with 43 additions and 2 deletions
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9
core/iwasm/common/wasm_exec_env.c
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@ -282,8 +282,13 @@ wasm_exec_env_set_thread_info(WASMExecEnv *exec_env)
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;
if (exec_env->user_native_stack_boundary)
/* WASM_STACK_GUARD_SIZE isn't added for flexibility to developer,
he must ensure that enough guard bytes are kept. */
exec_env->native_stack_boundary = exec_env->user_native_stack_boundary;
else
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);

4
core/iwasm/common/wasm_exec_env.h
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@ -136,6 +136,10 @@ typedef struct WASMExecEnv {
void *user_data;
/* The boundary of native stack set by host embedder. It is used
if it is not NULL when calling wasm functions. */
uint8 *user_native_stack_boundary;
/* The native thread handle of current thread */
korp_tid handle;

7
core/iwasm/common/wasm_runtime_common.c
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@ -2225,6 +2225,13 @@ wasm_runtime_get_user_data(WASMExecEnv *exec_env)
return exec_env->user_data;
}
void
wasm_runtime_set_native_stack_boundary(WASMExecEnv *exec_env,
uint8 *native_stack_boundary)
{
exec_env->user_native_stack_boundary = native_stack_boundary;
}
#ifdef OS_ENABLE_HW_BOUND_CHECK
void
wasm_runtime_access_exce_check_guard_page()

5
core/iwasm/common/wasm_runtime_common.h
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@ -673,6 +673,11 @@ wasm_runtime_set_user_data(WASMExecEnv *exec_env, void *user_data);
WASM_RUNTIME_API_EXTERN void *
wasm_runtime_get_user_data(WASMExecEnv *exec_env);
/* See wasm_export.h for description */
WASM_RUNTIME_API_EXTERN void
wasm_runtime_set_native_stack_boundary(WASMExecEnv *exec_env,
uint8 *native_stack_boundary);
#if WASM_CONFIGURABLE_BOUNDS_CHECKS != 0
/* See wasm_export.h for description */
WASM_RUNTIME_API_EXTERN void

20
core/iwasm/include/wasm_export.h
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@ -1755,6 +1755,26 @@ wasm_runtime_set_user_data(wasm_exec_env_t exec_env, void *user_data);
WASM_RUNTIME_API_EXTERN void *
wasm_runtime_get_user_data(wasm_exec_env_t exec_env);
/**
* Set native stack boundary to execution environment, if it is set,
* it will be used instead of getting the boundary with the platform
* layer API when calling wasm functions. This is useful for some
* fiber cases.
*
* Note: unlike setting the boundary by runtime, this API doesn't add
* the WASM_STACK_GUARD_SIZE(see comments in core/config.h) to the
* exec_env's native_stack_boundary to reserve bytes to the native
* thread stack boundary, which is used to throw native stack overflow
* exception if the guard boundary is reached. Developer should ensure
* that enough guard bytes are kept.
*
* @param exec_env the execution environment
* @param native_stack_boundary the user data to be set
*/
WASM_RUNTIME_API_EXTERN void
wasm_runtime_set_native_stack_boundary(wasm_exec_env_t exec_env,
uint8_t *native_stack_boundary);
/**
* Dump runtime memory consumption, including:
* Exec env memory consumption