98 lines
2.3 KiB
Rust
98 lines
2.3 KiB
Rust
/**
|
|
A somewhat reduced test case to expose some Valgrind issues.
|
|
|
|
This originally came from the word-count benchmark.
|
|
*/
|
|
|
|
use std;
|
|
|
|
import option = option::t;
|
|
import option::some;
|
|
import option::none;
|
|
import str;
|
|
import vec;
|
|
import std::map;
|
|
import task;
|
|
import comm::chan;
|
|
import comm::port;
|
|
import comm::send;
|
|
import comm::recv;
|
|
import comm;
|
|
|
|
fn map(filename: str, emit: map_reduce::putter) { emit(filename, "1"); }
|
|
|
|
mod map_reduce {
|
|
export putter;
|
|
export mapper;
|
|
export map_reduce;
|
|
|
|
type putter = fn@(str, str);
|
|
|
|
type mapper = native fn(str, putter);
|
|
|
|
tag ctrl_proto { find_reducer([u8], chan<int>); mapper_done; }
|
|
|
|
fn start_mappers(ctrl: chan<ctrl_proto>, inputs: [str]) {
|
|
for i: str in inputs {
|
|
task::spawn {|| map_task(ctrl, i); };
|
|
}
|
|
}
|
|
|
|
fn map_task(ctrl: chan<ctrl_proto>, input: str) {
|
|
let intermediates = map::new_str_hash();
|
|
|
|
fn emit(im: map::hashmap<str, int>, ctrl: chan<ctrl_proto>, key: str,
|
|
val: str) {
|
|
let c;
|
|
alt im.find(key) {
|
|
some(_c) { c = _c }
|
|
none {
|
|
let p = port();
|
|
#error("sending find_reducer");
|
|
send(ctrl, find_reducer(str::bytes(key), chan(p)));
|
|
#error("receiving");
|
|
c = recv(p);
|
|
log(error, c);
|
|
im.insert(key, c);
|
|
}
|
|
}
|
|
}
|
|
|
|
map(input, bind emit(intermediates, ctrl, _, _));
|
|
send(ctrl, mapper_done);
|
|
}
|
|
|
|
fn map_reduce(inputs: [str]) {
|
|
let ctrl = port();
|
|
|
|
// This task becomes the master control task. It spawns others
|
|
// to do the rest.
|
|
|
|
let reducers: map::hashmap<str, int>;
|
|
|
|
reducers = map::new_str_hash();
|
|
|
|
start_mappers(chan(ctrl), inputs);
|
|
|
|
let num_mappers = vec::len(inputs) as int;
|
|
|
|
while num_mappers > 0 {
|
|
alt recv(ctrl) {
|
|
mapper_done { num_mappers -= 1; }
|
|
find_reducer(k, cc) {
|
|
let c;
|
|
alt reducers.find(str::unsafe_from_bytes(k)) {
|
|
some(_c) { c = _c; }
|
|
none { c = 0; }
|
|
}
|
|
send(cc, c);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
map_reduce::map_reduce(["../src/test/run-pass/hashmap-memory.rs"]);
|
|
}
|