Enhance the statistic of wasm function execution time, or the performance profiling feature: - Add os_time_thread_cputime_us() to get the cputime of a thread, and use it to calculate the execution time of a wasm function - Support the statistic of the children execution time of a function, and dump it in wasm_runtime_dump_perf_profiling - Expose two APIs: wasm_runtime_sum_wasm_exec_time wasm_runtime_get_wasm_func_exec_time And rename os_time_get_boot_microsecond to os_time_get_boot_us.
This folder contains the platform abstract layer for multiple platforms. To support a new platform, you can simply create a new folder here and implement all the APIs defined in include folder.
Refer to port_wamr.md for how to port WAMR to a target platform.