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Nondeterminate.c
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Nondeterminate.c
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/*
*Nondeterminate - A piece of music to be played by a computer running
* Audiolyzer.
*
*Copyright Brandon Lucia 2010
*blucia@gmail.com
*****************************
*
*This piece of music is composed in four movements, and can be played by
*compiling this program w/ -O0, and running it under Pin (http://pintool.org)
*with Audiolyzer as the pintool (Audiolyzer is part of this project).
*
*A more thorough discussion of the piece and its structure and its main idea
*can be found in README.Nondeterminate or at http://catspajamas.tumblr.com
*
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#define NUMTHREADS 16
#define P2_NUMTHREADS 32
#define P3_NUMTHREADS 32
#define P4_NUMTHREADS 64
#define OUTER 5
#define SHORT 2
void SET_SD_SAMPLE_RATE(unsigned long r) __attribute__ ((noinline));
void SET_SD_SAMPLE_RATE(unsigned long r){
fprintf(stderr,"updating the sample rate!!\n");
}
pthread_mutex_t globLock;
pthread_barrier_t globBar;
pthread_mutex_t phase_1Lock;
pthread_barrier_t phase_1Bar;
int sum = 0;
pthread_mutex_t phase_2aLock;
pthread_mutex_t phase_2bLock;
pthread_barrier_t phase_2aBar;
pthread_barrier_t phase_2bBar;
int suma = 0;
int sumb = 0;
#define NUMP3GROUPS 8
volatile int p3CurGroup = 0;
pthread_barrier_t phase_3Bars[NUMP3GROUPS];
pthread_mutex_t phase_3Locks[NUMP3GROUPS];
int done = 0;
void *phase_4(void *v){
pthread_barrier_wait(&phase_1Bar);
fprintf(stderr,"DONE WITH BARRIER!\n");
int i = 0;
for(i = 0; i < 33; i++){
pthread_mutex_lock(&phase_1Lock);
sum ++;
pthread_mutex_unlock(&phase_1Lock);
usleep(1000000 - (100*i*i));
}
pthread_mutex_lock(&globLock);
done++;
pthread_mutex_unlock(&globLock);
}
void *phase_1(void *v){
pthread_barrier_wait(&phase_1Bar);
fprintf(stderr,"DONE WITH BARRIER!\n");
int i = 0;
for(i = 0; i < 50; i++){
pthread_mutex_lock(&phase_1Lock);
sum ++;
pthread_mutex_unlock(&phase_1Lock);
usleep(1000 - (10*i));
}
pthread_mutex_lock(&globLock);
done++;
pthread_mutex_unlock(&globLock);
}
void *phase_2a(void *v){
pthread_barrier_wait(&globBar);
pthread_barrier_wait(&phase_2bBar);//means b goes first
int t;
for(t = 0; t < OUTER; t++){
fprintf(stderr,"A is waiting\n");
pthread_barrier_wait(&phase_2aBar);
fprintf(stderr,"A is Running\n");
int i = 0;
for(i = 0; i < 10; i++){
pthread_mutex_lock(&phase_2aLock);
suma ++;
pthread_mutex_unlock(&phase_2aLock);
usleep(1000 - (10*i*i));
}
if(t < OUTER - 1){
pthread_barrier_wait(&phase_2bBar);
}
}
pthread_mutex_lock(&globLock);
done++;
pthread_mutex_unlock(&globLock);
}
void *phase_2b(void *v){
pthread_barrier_wait(&globBar);
int t;
for(t = 0; t < OUTER; t++){
fprintf(stderr,"B is waiting\n");
pthread_barrier_wait(&phase_2bBar);
fprintf(stderr,"B is running\n");
int i;
for(i = 0; i < 10; i++){
pthread_mutex_lock(&phase_2bLock);
sumb ++;
pthread_mutex_unlock(&phase_2bLock);
usleep(1000 - (10*i*i));
}
pthread_barrier_wait(&phase_2aBar);
//fprintf(stderr,"B is waiting for 5s\n");
//usleep(5000000);
//fprintf(stderr,"B is done waiting\n");
}
fprintf(stderr,"B is done\n");
pthread_mutex_lock(&globLock);
done++;
pthread_mutex_unlock(&globLock);
}
void *phase_3(void *v){
int *tidp = (int*)v;
int tid = *tidp;
int groupID = 0;
int g;
for(g = 0; g < NUMP3GROUPS; g++){
if(g * (P3_NUMTHREADS / NUMP3GROUPS) > tid){
break;
}
groupID = g;
}
fprintf(stderr,"tid was %d\n",tid);
fprintf(stderr,"groupID was %d\n",groupID);
pthread_barrier_wait(&globBar);
int t;
for(t = 0; t < SHORT; t++){
while(1){
if(p3CurGroup != groupID){
pthread_barrier_wait(&globBar);
}else{
break;
}
}
fprintf(stderr,">>>>>>>>>>>>>>>>thread %d in group %d is running<<<<<<<<<<<<<<<<\n",tid,groupID);
int i;
for(i = 0; i < 5; i++){
pthread_mutex_lock(&phase_3Locks[groupID]);
sumb ++;
pthread_mutex_unlock(&phase_3Locks[groupID]);
usleep(1000 - (10*i*i));
}
if(tid % (P3_NUMTHREADS / NUMP3GROUPS) == 0){
fprintf(stderr,"tid %d incremented group count\n",tid);
if(groupID < NUMP3GROUPS-1){
pthread_mutex_lock(&globLock);
p3CurGroup++;
pthread_mutex_unlock(&globLock);
}else{
pthread_mutex_lock(&globLock);
p3CurGroup = 0;
pthread_mutex_unlock(&globLock);
}
}
if(t < SHORT - 1){
pthread_barrier_wait(&globBar);
}else{
pthread_mutex_lock(&globLock);
done = P3_NUMTHREADS;
pthread_mutex_unlock(&globLock);
}
}
fprintf(stderr,"%d is done\n",tid);
pthread_mutex_lock(&globLock);
done++;
pthread_mutex_unlock(&globLock);
}
int main(int argc, char *argv[]){
pthread_mutex_init(&globLock,NULL);
pthread_mutex_init(&phase_1Lock,NULL);
pthread_barrier_init(&phase_1Bar,NULL,NUMTHREADS);
pthread_t spawned[NUMTHREADS];
fprintf(stderr,"Phase 1\n");
//goto phase2;
goto phase3;
//goto phase4;
int i;
for(i = 0; i < NUMTHREADS; i++){
pthread_mutex_lock(&globLock);
fprintf(stderr,"creating thread %d\n",i);
pthread_create(&spawned[i],NULL,phase_1,NULL);
fprintf(stderr,"created thread %d\n",i);
pthread_mutex_unlock(&globLock);
}
while(1){
pthread_mutex_lock(&globLock);
if(done == NUMTHREADS){
pthread_mutex_unlock(&globLock);
break;
}
usleep(5000);
pthread_mutex_unlock(&globLock);
usleep(50);
}
for(i = 0; i < NUMTHREADS; i++){
pthread_join(spawned[i],NULL);
}
done = 0;
phase2:
/*End Phase 1*/
fprintf(stderr,"Phase 2\n");
pthread_mutex_init(&phase_2aLock,NULL);
pthread_mutex_init(&phase_2bLock,NULL);
pthread_barrier_init(&phase_2aBar,NULL,P2_NUMTHREADS);
pthread_barrier_init(&phase_2bBar,NULL,P2_NUMTHREADS);
pthread_barrier_init(&globBar,NULL,P2_NUMTHREADS);
pthread_t spawned2[P2_NUMTHREADS];
for(i = 0; i < P2_NUMTHREADS; i++){
fprintf(stderr,"Spawning 2!\n");
pthread_mutex_lock(&globLock);
fprintf(stderr,"creating thread %d\n",i);
if(i < P2_NUMTHREADS / 2){
pthread_create(&spawned2[i],NULL,phase_2a,NULL);
}else{
pthread_create(&spawned2[i],NULL,phase_2b,NULL);
}
fprintf(stderr,"created thread %d\n",i);
pthread_mutex_unlock(&globLock);
}
while(1){
//pthread_mutex_lock(&globLock);
if(done == P2_NUMTHREADS){break;}
usleep(5000);
//pthread_mutex_unlock(&globLock);
usleep(50);
}
phase3:
done = 0;
pthread_barrier_init(&globBar,NULL,P3_NUMTHREADS);
pthread_mutex_init(&globLock,NULL);
fprintf(stderr,"Phase 3\n");
int l;
for(l = 0; l < NUMP3GROUPS; l++){
pthread_mutex_init(&phase_3Locks[l], NULL);
pthread_barrier_init(&phase_3Bars[l], NULL, P3_NUMTHREADS / NUMP3GROUPS);
}
pthread_t spawned3[P3_NUMTHREADS];
for(i = 0; i < P3_NUMTHREADS; i++){
pthread_mutex_lock(&globLock);
fprintf(stderr,"creating thread %d\n",i);
int *arg = (int*)malloc(sizeof(int));
*arg = i;
pthread_create(&spawned3[i],NULL,phase_3,(void*)arg);
fprintf(stderr,">>>created thread<<< %d\n",i);
pthread_mutex_unlock(&globLock);
}
while(1){
//pthread_mutex_lock(&globLock);
if(done == P3_NUMTHREADS){break;}
usleep(5000);
//pthread_mutex_unlock(&globLock);
usleep(50);
}
phase4:
done = 0;
//phase 4
//pthread_mutex_init(&globLock,NULL);
pthread_mutex_init(&phase_1Lock,NULL);
pthread_barrier_init(&phase_1Bar,NULL,P4_NUMTHREADS);
pthread_t spawned4[P4_NUMTHREADS];
fprintf(stderr,"Phase 4\n");
for(i = 0; i < P4_NUMTHREADS; i++){
pthread_mutex_lock(&globLock);
fprintf(stderr,"creating thread %d\n",i);
pthread_create(&spawned4[i],NULL,phase_4,NULL);
fprintf(stderr,"created thread %d\n",i);
pthread_mutex_unlock(&globLock);
}
while(1){
if(done == P4_NUMTHREADS){
break;
}
usleep(500);
}
for(i = 0; i < P4_NUMTHREADS; i++){
pthread_join(spawned4[i],NULL);
}
done = 0;
//done
for(i = 0; i < 1000; i++){
pthread_mutex_lock(&globLock);
pthread_mutex_unlock(&globLock);
}
}