ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since 29185fc was
bb662027,
checked in by Thierry Delisle <tdelisle@…>, 4 years ago
|
Added cfathread C library which encapsulates a small part of libcfa threads in a C interface.
|
-
Property mode set to
100644
|
File size:
1.4 KB
|
Rev | Line | |
---|
[bb662027] | 1 | #include <clib/cfathread.h> |
---|
| 2 | |
---|
| 3 | #include <stdio.h> |
---|
| 4 | #include <stdlib.h> |
---|
| 5 | |
---|
| 6 | thread_local struct drand48_data buffer = { 0 }; |
---|
| 7 | int myrand() { |
---|
| 8 | long int result; |
---|
| 9 | lrand48_r(&buffer, &result); |
---|
| 10 | return result; |
---|
| 11 | } |
---|
| 12 | |
---|
| 13 | |
---|
| 14 | enum Constants { blocked_size = 20 }; |
---|
| 15 | cfathread_t volatile blocked[blocked_size]; |
---|
| 16 | |
---|
| 17 | void Worker( cfathread_t this ) { |
---|
| 18 | for(int i = 0; i < 1000; i++) { |
---|
| 19 | int idx = myrand() % blocked_size; |
---|
| 20 | if(blocked[idx]) { |
---|
| 21 | cfathread_t thrd = __atomic_exchange_n(&blocked[idx], NULL, __ATOMIC_SEQ_CST); |
---|
| 22 | cfathread_unpark( thrd ); |
---|
| 23 | } else { |
---|
| 24 | cfathread_t thrd = __atomic_exchange_n(&blocked[idx], this, __ATOMIC_SEQ_CST); |
---|
| 25 | cfathread_unpark( thrd ); |
---|
| 26 | cfathread_park(); |
---|
| 27 | } |
---|
| 28 | } |
---|
| 29 | printf("Done\n"); |
---|
| 30 | } |
---|
| 31 | |
---|
| 32 | volatile bool stop; |
---|
| 33 | void Unparker( cfathread_t this ) { |
---|
| 34 | while(!stop) { |
---|
| 35 | int idx = myrand() % blocked_size; |
---|
| 36 | cfathread_t thrd = __atomic_exchange_n(&blocked[idx], NULL, __ATOMIC_SEQ_CST); |
---|
| 37 | cfathread_unpark( thrd ); |
---|
| 38 | int r = myrand() % 20; |
---|
| 39 | for( int i = 0; i < r; i++ ) { |
---|
| 40 | cfathread_yield(); |
---|
| 41 | } |
---|
| 42 | } |
---|
| 43 | printf("Done Unparker\n"); |
---|
| 44 | } |
---|
| 45 | |
---|
| 46 | |
---|
| 47 | int main() { |
---|
| 48 | stop = false; |
---|
| 49 | for(int i = 0; i < blocked_size; i++) { |
---|
| 50 | blocked[i] = NULL; |
---|
| 51 | } |
---|
| 52 | |
---|
| 53 | cfathread_setproccnt( 4 ); |
---|
| 54 | cfathread_t u = cfathread_create( Unparker ); |
---|
| 55 | { |
---|
| 56 | cfathread_t t[20]; |
---|
| 57 | for(int i = 0; i < 20; i++) { |
---|
| 58 | t[i] = cfathread_create( Worker ); |
---|
| 59 | } |
---|
| 60 | for(int i = 0; i < 20; i++) { |
---|
| 61 | cfathread_join( t[i] ); |
---|
| 62 | } |
---|
| 63 | } |
---|
| 64 | stop = true; |
---|
| 65 | cfathread_join(u); |
---|
| 66 | cfathread_setproccnt( 1 ); |
---|
| 67 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.