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As reported in #3500, when debug interpreter is enabled, the classic interpreter
performs a lock operation to read `exec_env->current_status->signal_flag` and
do further handling before fetching next opcode, which makes the interpreter
run slower.
This PR atomic loads the `exec_env->current_status->signal_flag` without mutex
lock when 32-bit atomic load is supported, and only adding lock for further
handling when the signal_flag is WAMR_SIG_SINGSTEP, which improves the
performance.
When using the wasm-c-api and there's a trap, `wasm_func_call()` returns
a `wasm_trap_t *` object. No matter which thread crashes, the trap contains
the stack frames of the main thread.
With this PR, when there's an exception, the stack frames of the thread
where the exception occurs are stored into the thread cluster.
`wasm_func_call()` can then return those stack frames.
Add API wasm_runtime_terminate to terminate a module instance
by setting "terminated by user" exception to the module instance.
And update the product-mini of posix platforms.
Note: this doesn't work for some situations like blocking system calls.
Introduce module instance context APIs which can set one or more contexts created
by the embedder for a wasm module instance:
```C
wasm_runtime_create_context_key
wasm_runtime_destroy_context_key
wasm_runtime_set_context
wasm_runtime_set_context_spread
wasm_runtime_get_context
```
And make libc-wasi use it and set wasi context as the first context bound to the wasm
module instance.
Also add samples.
Refer to https://github.com/bytecodealliance/wasm-micro-runtime/issues/2460.
Fix issue reported in #2172: wasm-c-api `wasm_func_call` may use a wrong exec_env
when multi-threading is enabled, with error "invalid exec env" reported
Fix issue reported in #2149: main instance's `c_api_func_imports` are not passed to
the counterpart of new thread's instance in wasi-threads mode
Fix issue of invalid size calculated to copy `c_api_func_imports` in pthread mode
And refactor the code to use `wasm_cluster_dup_c_api_imports` to copy the
`c_api_func_imports` to new thread for wasi-threads mode and pthread mode.
Fix issues in the libc-wasi `poll_oneoff` when thread manager is enabled:
- The exception of a thread may be cleared when other thread runs into
`proc_exit` and then calls `clear_wasi_proc_exit_exception`, so should not
use `wasm_runtime_get_exception` to check whether an exception was
thrown, use `wasm_cluster_is_thread_terminated` instead
- We divided one time poll_oneoff into many times poll_oneoff to check
the exception to avoid long time waiting in previous PR, but if all events
returned by one time poll are all waiting events, we need to continue to
wait but not return directly.
Follow-up on #1951. Tested with multiple timeout values, with and without
interruption and measured the time spent sleeping.
This syscall doesn't need allocating stack or TLS and it's expected from the application
to do that instead. E.g. WASI-libc already does this for `pthread_create`.
Also fix some of the examples to allocate memory for stack and not use stack before
the stack pointer is set to a correct value.
Fix wasm_application_execute_main/wasm_application_execute_func not waiting for
other threads to terminate in multi-thread mode, which causes that the exception
thrown by other threads may haven't been spreaded to current main thread, and
cannot be detected by the caller, as reported in #1131.
Fix the issue that joining a detached thread might result in joining hang,
resolve the issue by adding wait_count for a thread's exec_env to indicate
whether a thread needs to detach itself or not when it exits.
And add checks for the input exec_env for cluster's join/detach/cancel thread.
- move the wait_cond from exec_env to debug_instance, so the debug thread can be waken up by any threads
- process more general query message from debugger
- refine debug instance create/destroy mechanism
- avoid creating debug instance during module instantiating
- avoid blocking execution thread during creating debug instance
- update related documents
Apply clang-format for core/iwasm/compilation and core/iwasm/libraries files.
Add wasm-c-api empty_imports sample to workflow test.
And enable triggering workflow when core/config.h changes.
Implement source debugging feature for classic interpreter and AOT:
- use `cmake -DWAMR_BUILD_DEBUG_INTERP=1` to enable interpreter debugging
- use `cmake -DWAMR_BUILD_DEBUG_AOT=1` to enable AOT debugging
See doc/source_debugging.md for more details.
