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60 lines
1.6 KiB
60 lines
1.6 KiB
5 years ago
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#ifndef SFRT_WORKER_THREAD_H
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#define SFRT_WORKER_THREAD_H
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#include <uv.h>
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#include "types.h"
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extern __thread uv_loop_t worker_thread_uvio_handle;
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void *worker_thread_main(void *return_code);
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/**
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* Translates WASM offsets into runtime VM pointers
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* @param offset an offset into the WebAssembly linear memory
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* @param bounds_check the size of the thing we are pointing to
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* @return void pointer to something in WebAssembly linear memory
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**/
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static inline void *
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worker_thread_get_memory_ptr_void(u32 offset, u32 bounds_check)
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{
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return (void *)get_memory_ptr_for_runtime(offset, bounds_check);
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}
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/**
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* Get a single-byte extended ASCII character from WebAssembly linear memory
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* @param offset an offset into the WebAssembly linear memory
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* @return char at the offset
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**/
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static inline char
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worker_thread_get_memory_character(u32 offset)
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{
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return get_memory_ptr_for_runtime(offset, 1)[0];
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}
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/**
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* Get a null-terminated String from WebAssembly linear memory
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* @param offset an offset into the WebAssembly linear memory
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* @param max_length the maximum expected length in characters
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* @return pointer to the string or NULL if max_length is reached without finding null-terminator
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**/
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static inline char *
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worker_thread_get_memory_string(u32 offset, u32 max_length)
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{
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for (int i = 0; i < max_length; i++) {
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if (worker_thread_get_memory_character(offset + i) == '\0')
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return worker_thread_get_memory_ptr_void(offset, 1);
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}
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return NULL;
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}
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/**
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* Get global libuv handle
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**/
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static inline uv_loop_t *
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worker_thread_get_libuv_handle(void)
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{
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return &worker_thread_uvio_handle;
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}
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#endif /* SFRT_WORKER_THREAD_H */
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