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Fix potential block issue in source debugger (#1887)

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Fix issue reported in #1860
This commit is contained in:
Xu Jun 2023-01-17 08:45:29 +08:00 committed by GitHub
parent 622cdbefd6
commit e696ac36d7
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 11 additions and 13 deletions
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3
core/iwasm/interpreter/wasm_interp_classic.c
View File

@ -1041,7 +1041,6 @@ wasm_interp_call_func_import(WASMModuleInstance *module_inst,
} \
if (IS_WAMR_STOP_SIG(exec_env->current_status->signal_flag)) { \
SYNC_ALL_TO_FRAME(); \
wasm_cluster_thread_stopped(exec_env); \
wasm_cluster_thread_waiting_run(exec_env); \
} \
} while (0)
@ -1077,7 +1076,6 @@ wasm_interp_call_func_import(WASMModuleInstance *module_inst,
&& exec_env->current_status->step_count++ == 1) { \
exec_env->current_status->step_count = 0; \
SYNC_ALL_TO_FRAME(); \
wasm_cluster_thread_stopped(exec_env); \
wasm_cluster_thread_waiting_run(exec_env); \
} \
goto *handle_table[*frame_ip++]; \
@ -1094,7 +1092,6 @@ wasm_interp_call_func_import(WASMModuleInstance *module_inst,
&& exec_env->current_status->step_count++ == 2) { \
exec_env->current_status->step_count = 0; \
SYNC_ALL_TO_FRAME(); \
wasm_cluster_thread_stopped(exec_env); \
wasm_cluster_thread_waiting_run(exec_env); \
} \
continue

18
core/iwasm/libraries/thread-mgr/thread_manager.c
View File

@ -609,17 +609,17 @@ notify_debug_instance_exit(WASMExecEnv *exec_env)
on_thread_exit_event(cluster->debug_inst, exec_env);
}
void
wasm_cluster_thread_stopped(WASMExecEnv *exec_env)
{
exec_env->current_status->running_status = STATUS_STOP;
notify_debug_instance(exec_env);
}
void
wasm_cluster_thread_waiting_run(WASMExecEnv *exec_env)
{
os_mutex_lock(&exec_env->wait_lock);
/* Wake up debugger thread after we get the lock, otherwise we may miss the
* signal from debugger thread, see
* https://github.com/bytecodealliance/wasm-micro-runtime/issues/1860 */
exec_env->current_status->running_status = STATUS_STOP;
notify_debug_instance(exec_env);
while (!wasm_cluster_thread_is_running(exec_env)) {
os_cond_wait(&exec_env->wait_cond, &exec_env->wait_lock);
}
@ -646,16 +646,20 @@ wasm_cluster_thread_exited(WASMExecEnv *exec_env)
void
wasm_cluster_thread_continue(WASMExecEnv *exec_env)
{
os_mutex_lock(&exec_env->wait_lock);
wasm_cluster_clear_thread_signal(exec_env);
exec_env->current_status->running_status = STATUS_RUNNING;
os_cond_signal(&exec_env->wait_cond);
os_mutex_unlock(&exec_env->wait_lock);
}
void
wasm_cluster_thread_step(WASMExecEnv *exec_env)
{
os_mutex_lock(&exec_env->wait_lock);
exec_env->current_status->running_status = STATUS_STEP;
os_cond_signal(&exec_env->wait_cond);
os_mutex_unlock(&exec_env->wait_lock);
}
void

3
core/iwasm/libraries/thread-mgr/thread_manager.h
View File

@ -166,9 +166,6 @@ wasm_cluster_destroy_exenv_status(WASMCurrentEnvStatus *status);
void
wasm_cluster_send_signal_all(WASMCluster *cluster, uint32 signo);
void
wasm_cluster_thread_stopped(WASMExecEnv *exec_env);
void
wasm_cluster_thread_waiting_run(WASMExecEnv *exec_env);