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59 lines
1.2 KiB
Rust
59 lines
1.2 KiB
Rust
extern crate flame;
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use std::fs::File;
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fn byref(n: u64, data: &[u64; 1024]) {
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if n>0 {
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byref(n-1, data);
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byref(n-1, data);
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}
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}
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fn bycopy(n: u64, data: [u64; 1024]) {
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if n>0 {
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bycopy(n-1, data);
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bycopy(n-1, data);
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}
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}
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struct DataClonable([u64; 1024]);
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impl Clone for DataClonable {
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fn clone(&self) -> Self {
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let mut newdata = [0; 1024];
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for i in 0..1024 {
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newdata[i] = self.0[i];
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}
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DataClonable(newdata)
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}
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}
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fn byclone<T: Clone>(n: u64, data: T) {
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if n>0 {
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byclone(n-1, data.clone());
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byclone(n-1, data.clone());
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}
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}
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fn main() {
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let data = [0; 1024];
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flame::start("by reference");
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byref(15, &data);
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flame::end("by reference");
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let data = [0; 1024];
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flame::start("by copy");
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bycopy(15, data);
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flame::end("by copy");
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let data = [0; 1024];
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flame::start("by clone");
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byclone(15, data);
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flame::end("by clone");
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let data = DataClonable([0; 1024]);
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flame::start("by clone (with extras)");
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//2^4 instead of 2^15!!!!
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byclone(4, data);
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flame::end("by clone (with extras)");
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flame::dump_html(&mut File::create("flame-graph.html").unwrap()).unwrap();
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}
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