ADTast-experimentalenumpthread-emulationqualifiedEnum
Last change
on this file since efa28d5 was
26fd986,
checked in by Peter A. Buhr <pabuhr@…>, 5 years ago
|
update benchmarks for concurrency paper
|
-
Property mode set to
100644
|
File size:
1.0 KB
|
Line | |
---|
1 | #include <pthread.h> |
---|
2 | #include <stdio.h> |
---|
3 | |
---|
4 | #include "bench.h" |
---|
5 | |
---|
6 | volatile int go = 0; |
---|
7 | |
---|
8 | pthread_mutex_t m; |
---|
9 | pthread_cond_t c; |
---|
10 | |
---|
11 | void __attribute__((noinline)) call() { |
---|
12 | pthread_mutex_lock( &m ); |
---|
13 | pthread_cond_signal( &c ); |
---|
14 | pthread_mutex_unlock( &m ); |
---|
15 | } |
---|
16 | |
---|
17 | void __attribute__((noinline)) wait() { |
---|
18 | pthread_mutex_lock(&m); |
---|
19 | go = 1; |
---|
20 | for ( size_t i = 0; i < times; i++ ) { |
---|
21 | pthread_cond_wait( &c, &m ); |
---|
22 | } |
---|
23 | go = 0; |
---|
24 | pthread_mutex_unlock( &m ); |
---|
25 | } |
---|
26 | |
---|
27 | void * thread_main( __attribute__((unused)) void * arg ) { |
---|
28 | while ( go == 0 ) { sched_yield(); } // waiter must start first |
---|
29 | // barging for lock acquire => may not execute N times |
---|
30 | BENCH( |
---|
31 | while ( go == 1 ) { call(); }, |
---|
32 | result |
---|
33 | ) |
---|
34 | printf( "%g\n", result ); |
---|
35 | return NULL; |
---|
36 | } |
---|
37 | |
---|
38 | int main( int argc, char * argv[] ) { |
---|
39 | BENCH_START() |
---|
40 | pthread_t thread; |
---|
41 | if ( pthread_create( &thread, NULL, thread_main, NULL ) < 0 ) { |
---|
42 | perror( "failure" ); |
---|
43 | return 1; |
---|
44 | } |
---|
45 | wait(); |
---|
46 | if ( pthread_join( thread, NULL ) < 0 ) { |
---|
47 | perror( "failure" ); |
---|
48 | return 1; |
---|
49 | } |
---|
50 | } |
---|
51 | |
---|
52 | // Local Variables: // |
---|
53 | // tab-width: 4 // |
---|
54 | // End: // |
---|
Note: See
TracBrowser
for help on using the repository browser.