From e3a37a1bb4908b02553096afaeb380dbc85bb7bb Mon Sep 17 00:00:00 2001 From: Andrew Clayton Date: Thu, 26 Oct 2023 22:48:07 +0100 Subject: Move wasmtime-wasi-http to its own directory Moved to c/wasmtime-wasi-http Signed-off-by: Andrew Clayton --- Makefile | 11 - README | 2 +- c/wasmtime-wasi-http/Makefile | 11 + c/wasmtime-wasi-http/wasmtime-wasi-http.c | 345 ++++++++++++++++++++++++++++++ wasmtime-wasi-http.c | 345 ------------------------------ 5 files changed, 357 insertions(+), 357 deletions(-) delete mode 100644 Makefile create mode 100644 c/wasmtime-wasi-http/Makefile create mode 100644 c/wasmtime-wasi-http/wasmtime-wasi-http.c delete mode 100644 wasmtime-wasi-http.c diff --git a/Makefile b/Makefile deleted file mode 100644 index 22960de..0000000 --- a/Makefile +++ /dev/null @@ -1,11 +0,0 @@ -CC = gcc -CFLAGS = -Wall -Wextra -g -DWASM_MODULE="\"$(WASM_MODULE)\"" -I$(WASMTIME_C_API)/include -L$(WASMTIME_C_API)/lib -LDFLAGS = -Wl,-rpath,$(WASMTIME_C_API)/lib - -all: wasmtime-wasi-http - -wasmtime-wasi-http: wasmtime-wasi-http.c - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lwasmtime - -clean: - rm -f wasmtime-wasi-http diff --git a/README b/README index 7e13c9a..3c094f8 100644 --- a/README +++ b/README @@ -27,7 +27,7 @@ $ git clone git://git.digital-domain.net/project_blackbird.git Build it -$ cd project_blackbird +$ cd project_blackbird/c/wasmtime-wasi-http $ make WASMTIME_C_API=/path/to/wasmtime-c-api WASM_MODULE=/path/to/spin/examples/wasi-http-rust/target/wasm32-wasi/debug/wasi_http_rust.wasm Run it diff --git a/c/wasmtime-wasi-http/Makefile b/c/wasmtime-wasi-http/Makefile new file mode 100644 index 0000000..22960de --- /dev/null +++ b/c/wasmtime-wasi-http/Makefile @@ -0,0 +1,11 @@ +CC = gcc +CFLAGS = -Wall -Wextra -g -DWASM_MODULE="\"$(WASM_MODULE)\"" -I$(WASMTIME_C_API)/include -L$(WASMTIME_C_API)/lib +LDFLAGS = -Wl,-rpath,$(WASMTIME_C_API)/lib + +all: wasmtime-wasi-http + +wasmtime-wasi-http: wasmtime-wasi-http.c + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lwasmtime + +clean: + rm -f wasmtime-wasi-http diff --git a/c/wasmtime-wasi-http/wasmtime-wasi-http.c b/c/wasmtime-wasi-http/wasmtime-wasi-http.c new file mode 100644 index 0000000..e1b6693 --- /dev/null +++ b/c/wasmtime-wasi-http/wasmtime-wasi-http.c @@ -0,0 +1,345 @@ +/* + * Copyright (C) Andrew Clayton + * Copyright (C) F5, Inc. + */ + +#include +#include + +#include +#include +#include + +static void exit_with_error(const char *message, wasmtime_error_t *error, + wasm_trap_t *trap) +{ + wasm_byte_vec_t error_message; + + fprintf(stderr, "error: %s\n", message); + if (error != NULL) { + wasmtime_error_message(error, &error_message); + wasmtime_error_delete(error); + } else { + wasm_trap_message(trap, &error_message); + wasm_trap_delete(trap); + } + fprintf(stderr, "%.*s\n", (int) error_message.size, error_message.data); + wasm_byte_vec_delete(&error_message); + + exit(EXIT_FAILURE); +} + +static wasm_trap_t *dummy_func(void *env, wasmtime_caller_t *caller, + const wasmtime_val_t *args, size_t nargs, + wasmtime_val_t *results, size_t nresults) +{ + (void)env; + (void)caller; + (void)args; + (void)nargs; + (void)results; + (void)nresults; + + return NULL; +} + +static wasm_functype_t *create_wasm_func(const wasm_valkind_t *pk, + size_t nr_params, + const wasm_valkind_t *rk, + size_t nr_results) +{ + wasm_valtype_t *pt[14]; + wasm_valtype_t *rt[1]; + wasm_valtype_vec_t params; + wasm_valtype_vec_t results; + + if (nr_params > 0) { + for (size_t i = 0; i < nr_params; i++) + pt[i] = wasm_valtype_new(pk[i]); + wasm_valtype_vec_new(¶ms, nr_params, pt); + } else { + wasm_valtype_vec_new_empty(¶ms); + } + + if (nr_results > 0) { + for (size_t i = 0; i < nr_results; i++) + rt[i] = wasm_valtype_new(rk[i]); + wasm_valtype_vec_new(&results, nr_results, rt); + } else { + wasm_valtype_vec_new_empty(&results); + } + + return wasm_functype_new(¶ms, &results); +} + +static inline size_t rg(const char *s) +{ + return strlen(s); +} + +/* + * Argument counting macros gleamed from + * https://gist.github.com/christophercrouzet/db9bbb07d427381253a91210e7ddc68d + */ +#define ARG( \ + _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, ...) \ + _14 +#define COUNT_ARGS(...) \ + ARG(__VA_ARGS__, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0,) + +#define SET_VALS(type, ...) \ + .type = { __VA_ARGS__ }, \ + .nr_##type = COUNT_ARGS(__VA_ARGS__) + +#define SET_FUNC(function, function_name, module) \ + .func_name = function_name, \ + .func_namelen = strlen(function_name), \ + .mod_name = module, \ + .mod_namelen = strlen(module), \ + .func = dummy_func + +static void set_function_imports(wasmtime_linker_t *linker) +{ + static const struct { + const char *func_name; + int func_namelen; + const char *mod_name; + int mod_namelen; + + wasmtime_func_callback_t func; + + wasm_valkind_t params[14]; + size_t nr_params; + wasm_valkind_t results[1]; + size_t nr_results; + } import_functions[] = { + { + SET_FUNC(poll_oneoff, "poll-oneoff", "poll2"), + SET_VALS(params, WASM_I32, WASM_I32, WASM_I32), + }, { + SET_FUNC(read, "read", "streams2"), + SET_VALS(params, WASM_I32, WASM_I64, WASM_I32), + }, { + SET_FUNC(blocking_read, "blocking-read", "streams2"), + SET_VALS(params, WASM_I32, WASM_I64, WASM_I32), + }, { + SET_FUNC(subscribe_to_input_stream, + "subscribe-to-input-stream", "streams2"), + SET_VALS(params, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(write, "write", "streams2"), + SET_VALS(params, + WASM_I32, WASM_I32, WASM_I32, WASM_I32), + }, { + SET_FUNC(blocking_write, "blocking-write", "streams2"), + SET_VALS(params, + WASM_I32, WASM_I32, WASM_I32, WASM_I32), + }, { + SET_FUNC(subscribe_to_output_stream, + "subscribe-to-output-stream", "streams2"), + SET_VALS(params, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(handle, "handle", "default-outgoing-HTTP2"), + SET_VALS(params, + WASM_I32, WASM_I32, WASM_I32, WASM_I32, + WASM_I32, WASM_I32, WASM_I32, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(new_fields, "new-fields", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(fields_entries, "fields-entries", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(finish_incoming_stream, + "finish-incoming-stream", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(finish_outgoing_stream, + "finish-outgoing-stream", "types2"), + SET_VALS(params, WASM_I32, WASM_I32, WASM_I32), + }, { + SET_FUNC(incoming_request_method, + "incoming-request-method", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(incoming_request_path_with_query, + "incoming-request-path-with-query", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(incoming_request_headers, + "incoming-request-headers", "types2"), + SET_VALS(params, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(incoming_request_consume, + "incoming-request-consume", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(new_outgoing_request, "new-outgoing-request", + "types2"), + SET_VALS(params, + WASM_I32, WASM_I32, WASM_I32, WASM_I32, + WASM_I32, WASM_I32, WASM_I32, WASM_I32, + WASM_I32, WASM_I32, WASM_I32, WASM_I32, + WASM_I32, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(outgoing_request_write, + "outgoing-request-write", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(set_response_outparam, + "set-response-outparam", "types2"), + SET_VALS(params, + WASM_I32, WASM_I32, WASM_I32, WASM_I32, + WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(incoming_response_status, + "incoming-response-status", "types2"), + SET_VALS(params, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(incoming_response_headers, + "incoming-response-headers", "types2"), + SET_VALS(params, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(incoming_response_consume, + "incoming-response-consume", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(new_outgoing_response, + "new-outgoing-response", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + SET_VALS(results, WASM_I32), + }, { + SET_FUNC(outgoing_response_write, + "outgoing-response-write", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(future_incoming_response-get, + "future-incoming-response-get", "types2"), + SET_VALS(params, WASM_I32, WASM_I32), + }, { + SET_FUNC(listen_to_fauture_incoming_response, + "listen-to-future-incoming-response", + "types2"), + SET_VALS(params, WASM_I32), + SET_VALS(results, WASM_I32), + }, + + { } + }, *imf; + + for (imf = import_functions; imf->func_name != NULL; imf++) { + wasm_functype_t *func_ty; + + printf(" [%s::%s]\n", imf->mod_name, imf->func_name); + + func_ty = create_wasm_func(imf->params, imf->nr_params, + imf->results, imf->nr_results); + wasmtime_linker_define_func(linker, + imf->mod_name, imf->mod_namelen, + imf->func_name, imf->func_namelen, + func_ty, imf->func, NULL, NULL); + wasm_functype_delete(func_ty); + } +} + +int main(void) +{ + wasm_engine_t *engine; + wasmtime_store_t *store; + wasmtime_context_t *context; + wasmtime_module_t *module = NULL; + wasmtime_linker_t *linker; + wasmtime_error_t *error; + wasm_byte_vec_t wasm; + wasmtime_extern_t item; + wasi_config_t *wasi_config; + FILE *file; + size_t file_size; + bool ok; + + printf("Initialising...\n"); + engine = wasm_engine_new(); + store = wasmtime_store_new(engine, NULL, NULL); + context = wasmtime_store_context(store); + + linker = wasmtime_linker_new(engine); + error = wasmtime_linker_define_wasi(linker); + if (error != NULL) + exit_with_error("failed to link wasi", error, NULL); + + printf("Loading binary...\n"); + file = fopen(WASM_MODULE, "r"); + if (!file) { + printf("> Error loading file!\n"); + exit(EXIT_FAILURE); + } + fseek(file, 0L, SEEK_END); + file_size = ftell(file); + wasm_byte_vec_new_uninitialized(&wasm, file_size); + fseek(file, 0L, SEEK_SET); + if (fread(wasm.data, file_size, 1, file) != 1) { + printf("> Error loading module!\n"); + exit(EXIT_FAILURE); + } + fclose(file); + + printf("Compiling module...\n"); + error = wasmtime_module_new(engine, (uint8_t*)wasm.data, wasm.size, + &module); + if (!module) + exit_with_error("failed to compile module", error, NULL); + wasm_byte_vec_delete(&wasm); + + printf("Setting function imports...\n"); + set_function_imports(linker); + + printf("Initialising WASI...\n"); + wasi_config = wasi_config_new(); + wasi_config_inherit_env(wasi_config); + wasi_config_inherit_stdin(wasi_config); + wasi_config_inherit_stdout(wasi_config); + wasi_config_inherit_stderr(wasi_config); + error = wasmtime_context_set_wasi(context, wasi_config); + if (error) + exit_with_error("failed to initialise WASI", error, NULL); + + printf("Instantiating module...\n"); + error = wasmtime_linker_module(linker, context, "", 0, module); + if (error != NULL) + exit_with_error("failed to instantiate module", error, NULL); + + printf("Getting function exports...\n"); + ok = wasmtime_linker_get(linker, context, "", 0, "HTTP#handle", 11, + &item); + if (!ok) { + printf("> Error getting function export [HTTP#handle]\n"); + exit(EXIT_FAILURE); + } + printf(" [HTTP#handle]\n"); + + ok = wasmtime_linker_get(linker, context, "", 0, "cabi_realloc", 12, + &item); + if (!ok) { + printf("> Error getting function export [cabi_realloc]\n"); + exit(EXIT_FAILURE); + } + printf(" [cabi_realloc]\n"); + + printf("Shutting down...\n"); + wasmtime_module_delete(module); + wasmtime_store_delete(store); + wasm_engine_delete(engine); + + printf("Done.\n"); + + exit(EXIT_SUCCESS);; +} diff --git a/wasmtime-wasi-http.c b/wasmtime-wasi-http.c deleted file mode 100644 index e1b6693..0000000 --- a/wasmtime-wasi-http.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * Copyright (C) Andrew Clayton - * Copyright (C) F5, Inc. - */ - -#include -#include - -#include -#include -#include - -static void exit_with_error(const char *message, wasmtime_error_t *error, - wasm_trap_t *trap) -{ - wasm_byte_vec_t error_message; - - fprintf(stderr, "error: %s\n", message); - if (error != NULL) { - wasmtime_error_message(error, &error_message); - wasmtime_error_delete(error); - } else { - wasm_trap_message(trap, &error_message); - wasm_trap_delete(trap); - } - fprintf(stderr, "%.*s\n", (int) error_message.size, error_message.data); - wasm_byte_vec_delete(&error_message); - - exit(EXIT_FAILURE); -} - -static wasm_trap_t *dummy_func(void *env, wasmtime_caller_t *caller, - const wasmtime_val_t *args, size_t nargs, - wasmtime_val_t *results, size_t nresults) -{ - (void)env; - (void)caller; - (void)args; - (void)nargs; - (void)results; - (void)nresults; - - return NULL; -} - -static wasm_functype_t *create_wasm_func(const wasm_valkind_t *pk, - size_t nr_params, - const wasm_valkind_t *rk, - size_t nr_results) -{ - wasm_valtype_t *pt[14]; - wasm_valtype_t *rt[1]; - wasm_valtype_vec_t params; - wasm_valtype_vec_t results; - - if (nr_params > 0) { - for (size_t i = 0; i < nr_params; i++) - pt[i] = wasm_valtype_new(pk[i]); - wasm_valtype_vec_new(¶ms, nr_params, pt); - } else { - wasm_valtype_vec_new_empty(¶ms); - } - - if (nr_results > 0) { - for (size_t i = 0; i < nr_results; i++) - rt[i] = wasm_valtype_new(rk[i]); - wasm_valtype_vec_new(&results, nr_results, rt); - } else { - wasm_valtype_vec_new_empty(&results); - } - - return wasm_functype_new(¶ms, &results); -} - -static inline size_t rg(const char *s) -{ - return strlen(s); -} - -/* - * Argument counting macros gleamed from - * https://gist.github.com/christophercrouzet/db9bbb07d427381253a91210e7ddc68d - */ -#define ARG( \ - _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, ...) \ - _14 -#define COUNT_ARGS(...) \ - ARG(__VA_ARGS__, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0,) - -#define SET_VALS(type, ...) \ - .type = { __VA_ARGS__ }, \ - .nr_##type = COUNT_ARGS(__VA_ARGS__) - -#define SET_FUNC(function, function_name, module) \ - .func_name = function_name, \ - .func_namelen = strlen(function_name), \ - .mod_name = module, \ - .mod_namelen = strlen(module), \ - .func = dummy_func - -static void set_function_imports(wasmtime_linker_t *linker) -{ - static const struct { - const char *func_name; - int func_namelen; - const char *mod_name; - int mod_namelen; - - wasmtime_func_callback_t func; - - wasm_valkind_t params[14]; - size_t nr_params; - wasm_valkind_t results[1]; - size_t nr_results; - } import_functions[] = { - { - SET_FUNC(poll_oneoff, "poll-oneoff", "poll2"), - SET_VALS(params, WASM_I32, WASM_I32, WASM_I32), - }, { - SET_FUNC(read, "read", "streams2"), - SET_VALS(params, WASM_I32, WASM_I64, WASM_I32), - }, { - SET_FUNC(blocking_read, "blocking-read", "streams2"), - SET_VALS(params, WASM_I32, WASM_I64, WASM_I32), - }, { - SET_FUNC(subscribe_to_input_stream, - "subscribe-to-input-stream", "streams2"), - SET_VALS(params, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(write, "write", "streams2"), - SET_VALS(params, - WASM_I32, WASM_I32, WASM_I32, WASM_I32), - }, { - SET_FUNC(blocking_write, "blocking-write", "streams2"), - SET_VALS(params, - WASM_I32, WASM_I32, WASM_I32, WASM_I32), - }, { - SET_FUNC(subscribe_to_output_stream, - "subscribe-to-output-stream", "streams2"), - SET_VALS(params, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(handle, "handle", "default-outgoing-HTTP2"), - SET_VALS(params, - WASM_I32, WASM_I32, WASM_I32, WASM_I32, - WASM_I32, WASM_I32, WASM_I32, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(new_fields, "new-fields", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(fields_entries, "fields-entries", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(finish_incoming_stream, - "finish-incoming-stream", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(finish_outgoing_stream, - "finish-outgoing-stream", "types2"), - SET_VALS(params, WASM_I32, WASM_I32, WASM_I32), - }, { - SET_FUNC(incoming_request_method, - "incoming-request-method", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(incoming_request_path_with_query, - "incoming-request-path-with-query", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(incoming_request_headers, - "incoming-request-headers", "types2"), - SET_VALS(params, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(incoming_request_consume, - "incoming-request-consume", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(new_outgoing_request, "new-outgoing-request", - "types2"), - SET_VALS(params, - WASM_I32, WASM_I32, WASM_I32, WASM_I32, - WASM_I32, WASM_I32, WASM_I32, WASM_I32, - WASM_I32, WASM_I32, WASM_I32, WASM_I32, - WASM_I32, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(outgoing_request_write, - "outgoing-request-write", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(set_response_outparam, - "set-response-outparam", "types2"), - SET_VALS(params, - WASM_I32, WASM_I32, WASM_I32, WASM_I32, - WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(incoming_response_status, - "incoming-response-status", "types2"), - SET_VALS(params, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(incoming_response_headers, - "incoming-response-headers", "types2"), - SET_VALS(params, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(incoming_response_consume, - "incoming-response-consume", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(new_outgoing_response, - "new-outgoing-response", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - SET_VALS(results, WASM_I32), - }, { - SET_FUNC(outgoing_response_write, - "outgoing-response-write", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(future_incoming_response-get, - "future-incoming-response-get", "types2"), - SET_VALS(params, WASM_I32, WASM_I32), - }, { - SET_FUNC(listen_to_fauture_incoming_response, - "listen-to-future-incoming-response", - "types2"), - SET_VALS(params, WASM_I32), - SET_VALS(results, WASM_I32), - }, - - { } - }, *imf; - - for (imf = import_functions; imf->func_name != NULL; imf++) { - wasm_functype_t *func_ty; - - printf(" [%s::%s]\n", imf->mod_name, imf->func_name); - - func_ty = create_wasm_func(imf->params, imf->nr_params, - imf->results, imf->nr_results); - wasmtime_linker_define_func(linker, - imf->mod_name, imf->mod_namelen, - imf->func_name, imf->func_namelen, - func_ty, imf->func, NULL, NULL); - wasm_functype_delete(func_ty); - } -} - -int main(void) -{ - wasm_engine_t *engine; - wasmtime_store_t *store; - wasmtime_context_t *context; - wasmtime_module_t *module = NULL; - wasmtime_linker_t *linker; - wasmtime_error_t *error; - wasm_byte_vec_t wasm; - wasmtime_extern_t item; - wasi_config_t *wasi_config; - FILE *file; - size_t file_size; - bool ok; - - printf("Initialising...\n"); - engine = wasm_engine_new(); - store = wasmtime_store_new(engine, NULL, NULL); - context = wasmtime_store_context(store); - - linker = wasmtime_linker_new(engine); - error = wasmtime_linker_define_wasi(linker); - if (error != NULL) - exit_with_error("failed to link wasi", error, NULL); - - printf("Loading binary...\n"); - file = fopen(WASM_MODULE, "r"); - if (!file) { - printf("> Error loading file!\n"); - exit(EXIT_FAILURE); - } - fseek(file, 0L, SEEK_END); - file_size = ftell(file); - wasm_byte_vec_new_uninitialized(&wasm, file_size); - fseek(file, 0L, SEEK_SET); - if (fread(wasm.data, file_size, 1, file) != 1) { - printf("> Error loading module!\n"); - exit(EXIT_FAILURE); - } - fclose(file); - - printf("Compiling module...\n"); - error = wasmtime_module_new(engine, (uint8_t*)wasm.data, wasm.size, - &module); - if (!module) - exit_with_error("failed to compile module", error, NULL); - wasm_byte_vec_delete(&wasm); - - printf("Setting function imports...\n"); - set_function_imports(linker); - - printf("Initialising WASI...\n"); - wasi_config = wasi_config_new(); - wasi_config_inherit_env(wasi_config); - wasi_config_inherit_stdin(wasi_config); - wasi_config_inherit_stdout(wasi_config); - wasi_config_inherit_stderr(wasi_config); - error = wasmtime_context_set_wasi(context, wasi_config); - if (error) - exit_with_error("failed to initialise WASI", error, NULL); - - printf("Instantiating module...\n"); - error = wasmtime_linker_module(linker, context, "", 0, module); - if (error != NULL) - exit_with_error("failed to instantiate module", error, NULL); - - printf("Getting function exports...\n"); - ok = wasmtime_linker_get(linker, context, "", 0, "HTTP#handle", 11, - &item); - if (!ok) { - printf("> Error getting function export [HTTP#handle]\n"); - exit(EXIT_FAILURE); - } - printf(" [HTTP#handle]\n"); - - ok = wasmtime_linker_get(linker, context, "", 0, "cabi_realloc", 12, - &item); - if (!ok) { - printf("> Error getting function export [cabi_realloc]\n"); - exit(EXIT_FAILURE); - } - printf(" [cabi_realloc]\n"); - - printf("Shutting down...\n"); - wasmtime_module_delete(module); - wasmtime_store_delete(store); - wasm_engine_delete(engine); - - printf("Done.\n"); - - exit(EXIT_SUCCESS);; -} -- cgit