dimgigov
42041dfd74
- runtime: bux_async_return(value, size) copies result to task->result - runtime: bux_async_await returns void* result pointer - runtime: bux_async_result(handle) to retrieve result - sema: ekAwait returns *void - HIR: await lowered to bux_async_await returning *void - Example: async Compute() -> int with interleaved execution and result await
43 lines
1.1 KiB
Plaintext
43 lines
1.1 KiB
Plaintext
import Std::Io::{PrintLine, PrintInt};
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extern func bux_async_yield();
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extern func bux_async_run();
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extern func bux_async_spawn(fn: *void) -> *void;
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extern func bux_async_await(handle: *void) -> *void;
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extern func bux_async_return(value: *void, size: int64);
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async func Compute() -> int {
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PrintLine("Compute: step 1");
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bux_async_yield();
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PrintLine("Compute: step 2");
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let result: int = 42;
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bux_async_return((&result) as *void, sizeof(int));
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return result;
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}
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async func Double() -> int {
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PrintLine("Double: step 1");
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bux_async_yield();
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PrintLine("Double: step 2");
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let result: int = 84;
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bux_async_return((&result) as *void, sizeof(int));
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return result;
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}
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func Main() -> int {
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PrintLine("Main: start");
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let h1: *void = spawn Compute();
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let h2: *void = spawn Double();
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let r1Ptr: *int = h1.await as *int;
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let r2Ptr: *int = h2.await as *int;
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let r1: int = *r1Ptr;
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let r2: int = *r2Ptr;
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PrintLine("Results:");
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PrintInt(r1);
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PrintLine("");
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PrintInt(r2);
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PrintLine("");
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PrintLine("Main: done");
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return 0;
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}
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