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author | Myles Borins <mylesborins@google.com> | 2019-09-24 11:56:38 -0400 |
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committer | Myles Borins <myles.borins@gmail.com> | 2019-10-07 03:19:23 -0400 |
commit | f7f6c928c1c9c136b7926f892b8a2fda11d8b4b2 (patch) | |
tree | f5edbccb3ffda2573d70a6e291e7157f290e0ae0 /deps/v8/third_party/wasm-api/example/multi.c | |
parent | ffd22e81983056d09c064c59343a0e488236272d (diff) | |
download | android-node-v8-f7f6c928c1c9c136b7926f892b8a2fda11d8b4b2.tar.gz android-node-v8-f7f6c928c1c9c136b7926f892b8a2fda11d8b4b2.tar.bz2 android-node-v8-f7f6c928c1c9c136b7926f892b8a2fda11d8b4b2.zip |
deps: update V8 to 7.8.279.9
PR-URL: https://github.com/nodejs/node/pull/29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Diffstat (limited to 'deps/v8/third_party/wasm-api/example/multi.c')
-rw-r--r-- | deps/v8/third_party/wasm-api/example/multi.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/deps/v8/third_party/wasm-api/example/multi.c b/deps/v8/third_party/wasm-api/example/multi.c new file mode 100644 index 0000000000..7bd4676bae --- /dev/null +++ b/deps/v8/third_party/wasm-api/example/multi.c @@ -0,0 +1,154 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> + +#include "wasm.h" + +#define own + +// A function to be called from Wasm code. +own wasm_trap_t* callback( + const wasm_val_t args[], wasm_val_t results[] +) { + printf("Calling back...\n> "); + printf("> %"PRIu32" %"PRIu64" %"PRIu64" %"PRIu32"\n", + args[0].of.i32, args[1].of.i64, args[2].of.i64, args[3].of.i32); + printf("\n"); + + wasm_val_copy(&results[0], &args[0]); + return NULL; +} + + +// A function closure. +own wasm_trap_t* closure_callback( + void* env, const wasm_val_t args[], wasm_val_t results[] +) { + int i = *(int*)env; + printf("Calling back closure...\n"); + printf("> %d\n", i); + + results[0].kind = WASM_I32; + results[0].of.i32 = (int32_t)i; + return NULL; +} + + +int main(int argc, const char* argv[]) { + // Initialize. + printf("Initializing...\n"); + wasm_engine_t* engine = wasm_engine_new(); + wasm_store_t* store = wasm_store_new(engine); + + // Load binary. + printf("Loading binary...\n"); + FILE* file = fopen("multi.wasm", "r"); + if (!file) { + printf("> Error loading module!\n"); + return 1; + } + fseek(file, 0L, SEEK_END); + size_t file_size = ftell(file); + fseek(file, 0L, SEEK_SET); + wasm_byte_vec_t binary; + wasm_byte_vec_new_uninitialized(&binary, file_size); + if (fread(binary.data, file_size, 1, file) != 1) { + printf("> Error loading module!\n"); + return 1; + } + fclose(file); + + // Compile. + printf("Compiling module...\n"); + own wasm_module_t* module = wasm_module_new(store, &binary); + if (!module) { + printf("> Error compiling module!\n"); + return 1; + } + + wasm_byte_vec_delete(&binary); + + // Create external print functions. + printf("Creating callback...\n"); + wasm_valtype_t* types[4] = { + wasm_valtype_new_i32(), wasm_valtype_new_i64(), + wasm_valtype_new_i64(), wasm_valtype_new_i32() + }; + own wasm_valtype_vec_t tuple1, tuple2; + wasm_valtype_vec_new(&tuple1, 4, types); + wasm_valtype_vec_copy(&tuple2, &tuple1); + own wasm_functype_t* callback_type = wasm_functype_new(&tuple1, &tuple2); + own wasm_func_t* callback_func = + wasm_func_new(store, callback_type, callback); + + wasm_functype_delete(callback_type); + + // Instantiate. + printf("Instantiating module...\n"); + const wasm_extern_t* imports[] = {wasm_func_as_extern(callback_func)}; + own wasm_instance_t* instance = + wasm_instance_new(store, module, imports, NULL); + if (!instance) { + printf("> Error instantiating module!\n"); + return 1; + } + + wasm_func_delete(callback_func); + + // Extract export. + printf("Extracting export...\n"); + own wasm_extern_vec_t exports; + wasm_instance_exports(instance, &exports); + if (exports.size == 0) { + printf("> Error accessing exports!\n"); + return 1; + } + const wasm_func_t* run_func = wasm_extern_as_func(exports.data[0]); + if (run_func == NULL) { + printf("> Error accessing export!\n"); + return 1; + } + + wasm_module_delete(module); + wasm_instance_delete(instance); + + // Call. + printf("Calling export...\n"); + wasm_val_t args[4]; + args[0].kind = WASM_I32; + args[0].of.i32 = 1; + args[1].kind = WASM_I64; + args[1].of.i64 = 2; + args[2].kind = WASM_I64; + args[2].of.i64 = 3; + args[3].kind = WASM_I32; + args[3].of.i32 = 4; + wasm_val_t results[4]; + if (wasm_func_call(run_func, args, results)) { + printf("> Error calling function!\n"); + return 1; + } + + wasm_extern_vec_delete(&exports); + + // Print result. + printf("Printing result...\n"); + printf("> %"PRIu32" %"PRIu64" %"PRIu64" %"PRIu32"\n", + results[0].of.i32, results[1].of.i64, + results[2].of.i64, results[3].of.i32); + + assert(results[0].of.i32 == 4); + assert(results[1].of.i64 == 3); + assert(results[2].of.i64 == 2); + assert(results[3].of.i32 == 1); + + // Shut down. + printf("Shutting down...\n"); + wasm_store_delete(store); + wasm_engine_delete(engine); + + // All done. + printf("Done.\n"); + return 0; +} |