source: doc/theses/andrew_beach_MMath/code/throw-finally.cfa@ 4fa7096

Last change on this file since 4fa7096 was f79ee0d, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago

update exception benchmarks

  • Property mode set to 100644
File size: 1.0 KB
RevLine 
[ea593a3]1// Throw Across Finally
[ee23a8d]2#include <clock.hfa>
[ea593a3]3#include <exception.hfa>
[ee23a8d]4#include <fstream.hfa>
[f79ee0d]5#include <stdlib.hfa> // strto
[ea593a3]6
[f79ee0d]7exception empty_exception;
8vtable(empty_exception) empty_vt;
[ea593a3]9
[f79ee0d]10unsigned int frames; // use global because of gcc thunk problem
[ea593a3]11
[f79ee0d]12void unwind_finally(unsigned int dummy) {
[ea593a3]13 if (frames) {
[f79ee0d]14 frames -= 1;
[ea593a3]15 try {
[f79ee0d]16 unwind_finally(42);
[ea593a3]17 } finally {
[54651005]18 asm volatile ("# finally block");
[ea593a3]19 }
20 } else {
[f79ee0d]21 dummy = 42;
[ea593a3]22 throw (empty_exception){&empty_vt};
23 }
24}
25
26int main(int argc, char * argv[]) {
27 unsigned int times = 1;
28 unsigned int total_frames = 1;
[ee23a8d]29 if (1 < argc) {
[f79ee0d]30 times = strto(argv[1], 0p, 10);
[ea593a3]31 }
[ee23a8d]32 if (2 < argc) {
[f79ee0d]33 total_frames = strto(argv[2], 0p, 10);
[ea593a3]34 }
[f79ee0d]35 frames = total_frames;
[ea593a3]36
[ee23a8d]37 Time start_time = timeHiRes();
[ea593a3]38 for (int count = 0 ; count < times ; ++count) {
39 try {
[f79ee0d]40 unwind_finally(42);
[ea593a3]41 } catch (empty_exception *) {
[54651005]42 asm volatile ("# catch block");
[ea593a3]43 }
44 }
[ee23a8d]45 Time end_time = timeHiRes();
[f79ee0d]46 sout | "Run-Time (s): " | wd(0,1, (end_time - start_time)`ns / 1_000_000_000.);
[ea593a3]47}
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