From 73efecca42dbc44200e797e02f8c1e24fcff26ef Mon Sep 17 00:00:00 2001 From: Sebastiano Tronto Date: Thu, 5 Jun 2025 10:13:28 +0200 Subject: Added two more examples --- 05_callback/build.sh | 8 +++++++ 05_callback/index.html | 19 ++++++++++++++++ 05_callback/mime.txt | 1 + 05_callback/primes.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++ 05_callback/program.mjs | 11 ++++++++++ 05_callback/run-node.sh | 3 +++ 05_callback/run-server.sh | 7 ++++++ 05_callback/script.mjs | 13 +++++++++++ 05_callback/worker.mjs | 12 +++++++++++ 9 files changed, 129 insertions(+) create mode 100755 05_callback/build.sh create mode 100644 05_callback/index.html create mode 100644 05_callback/mime.txt create mode 100644 05_callback/primes.c create mode 100644 05_callback/program.mjs create mode 100755 05_callback/run-node.sh create mode 100755 05_callback/run-server.sh create mode 100644 05_callback/script.mjs create mode 100644 05_callback/worker.mjs (limited to '05_callback') diff --git a/05_callback/build.sh b/05_callback/build.sh new file mode 100755 index 0000000..998ebd1 --- /dev/null +++ b/05_callback/build.sh @@ -0,0 +1,8 @@ +#!/bin/sh + +mkdir -p build +emcc -sEXPORTED_FUNCTIONS=_primes_in_range -sMODULARIZE -sEXPORT_NAME=Primes \ + -sEXPORTED_RUNTIME_METHODS=addFunction,UTF8ToString \ + -sALLOW_TABLE_GROWTH \ + -pthread -sPTHREAD_POOL_SIZE=16 \ + -o build/primes.mjs primes.c diff --git a/05_callback/index.html b/05_callback/index.html new file mode 100644 index 0000000..7a1fba7 --- /dev/null +++ b/05_callback/index.html @@ -0,0 +1,19 @@ + + + + + + Primes in a range + + + + +
+ x
+
+
+
+

+ + + diff --git a/05_callback/mime.txt b/05_callback/mime.txt new file mode 100644 index 0000000..6a9a425 --- /dev/null +++ b/05_callback/mime.txt @@ -0,0 +1 @@ +text/javascript mjs diff --git a/05_callback/primes.c b/05_callback/primes.c new file mode 100644 index 0000000..f581161 --- /dev/null +++ b/05_callback/primes.c @@ -0,0 +1,55 @@ +#include +#include + +#define NTHREADS 16 + +bool isprime(int); +void *pthread_routine(void *); + +struct interval { int low; int high; int count; }; + +int primes_in_range(int low, int high, void (*log)(const char *)) { + pthread_t threads[NTHREADS]; + struct interval args[NTHREADS]; + + if (low < 0 || high < low) + return 0; + + int interval_size = (high-low)/NTHREADS + 1; + for (int i = 0; i < NTHREADS; i++) { + args[i].low = low + i*interval_size; + args[i].high = args[i].low + interval_size; + pthread_create(&threads[i], NULL, pthread_routine, &args[i]); + } + + log("All threads have started, computing..."); + + int result = 0; + for (int i = 0; i < NTHREADS; i++) { + pthread_join(threads[i], NULL); + result += args[i].count; + } + + return result; +} + +bool isprime(int n) { + if (n < 2) + return false; + + for (int i = 2; i*i <= n; i++) + if (n % i == 0) + return false; + return true; +} + +void *pthread_routine(void *arg) { + struct interval *interval = arg; + + interval->count = 0; + for (int i = interval->low; i < interval->high; i++) + if (isprime(i)) + interval->count++; + + return NULL; +} diff --git a/05_callback/program.mjs b/05_callback/program.mjs new file mode 100644 index 0000000..fd85a58 --- /dev/null +++ b/05_callback/program.mjs @@ -0,0 +1,11 @@ +import Primes from "./build/primes.mjs" + +var primes = await Primes(); +const logPtr = primes.addFunction((cstr) => { + console.log(primes.UTF8ToString(cstr)); +}, 'vp'); + +const a = 1; +const b = 10000000; +const count = primes._primes_in_range(a, b, logPtr); +console.log("There are " + count + " primes between " + a + " and " + b); diff --git a/05_callback/run-node.sh b/05_callback/run-node.sh new file mode 100755 index 0000000..a6c9aa8 --- /dev/null +++ b/05_callback/run-node.sh @@ -0,0 +1,3 @@ +#!/bin/sh + +node program.mjs diff --git a/05_callback/run-server.sh b/05_callback/run-server.sh new file mode 100755 index 0000000..6e75760 --- /dev/null +++ b/05_callback/run-server.sh @@ -0,0 +1,7 @@ +#!/bin/sh + +darkhttpd . \ +--port 8082 \ + --mimetypes mime.txt \ + --header 'Cross-Origin-Opener-Policy: same-origin' \ + --header 'Cross-Origin-Embedder-Policy: require-corp' diff --git a/05_callback/script.mjs b/05_callback/script.mjs new file mode 100644 index 0000000..9fce6fe --- /dev/null +++ b/05_callback/script.mjs @@ -0,0 +1,13 @@ +var aInput = document.getElementById("aInput"); +var bInput = document.getElementById("bInput"); +var button = document.getElementById("goButton"); +var resultText = document.getElementById("resultText"); + +var worker = new Worker("./worker.mjs", { type: "module" }); + +button.addEventListener("click", () => worker.postMessage({ + a: Number(aInput.value), + b: Number(bInput.value) +})); + +worker.onmessage = (e) => resultText.innerText = e.data.message; diff --git a/05_callback/worker.mjs b/05_callback/worker.mjs new file mode 100644 index 0000000..736e9f8 --- /dev/null +++ b/05_callback/worker.mjs @@ -0,0 +1,12 @@ +import Primes from "./build/primes.mjs"; + +var primes = await Primes(); +const logPtr = primes.addFunction((cstr) => { + postMessage({ message: primes.UTF8ToString(cstr) }); +}, "vp"); + +onmessage = (e) => { + const count = primes._primes_in_range(e.data.a, e.data.b, logPtr); + postMessage({ message: "There are " + count + " primes between " + + e.data.a + " and " + e.data.b }); +}; -- cgit v1.3