C++ (Cpp) __blockattribute__ Exemples

Exemple #1

Fichier : qrcu4.c Projet : chinuhub/ProofTraPar

void* qrcu_reader1() {
  int myidx;
  
  /* rcu_read_lock */
  while (1) {
    myidx = idx;
    if (NONDET) {
      { __blockattribute__((atomic))
	assume(myidx <= 0);
	assume(ctr1>0);
	ctr1++;
      }
      break;
    } else {
      if (NONDET) {
	{ __blockattribute__((atomic))
	  assume(myidx > 0);
	  assume(ctr2>0);
	  ctr2++;
	}
	break;
      } else {}
    }
  }

  readerprogress1 = 1; /*** readerprogress[me] = 1; ***/
  readerprogress1 = 2; /*** readerprogress[me] = 2 ***/

  /* rcu_read_unlock */
  { __blockattribute__((atomic))
      if (myidx <= 0) { ctr1--; } // use ctr1
      else { ctr2--; } // use ctr2
  }
}

Exemple #2

Fichier : main.c Projet : olivo/BP

void* qrcu_reader3() {
  int myidx;
  
  /* rcu_read_lock */
  while (1) {
    myidx = idx;
    if (NONDET) {
#ifdef SATABS
      { __CPROVER_atomic_begin();
#else
      { __blockattribute__((atomic))
#endif
	assume(myidx <= 0);
	assume(ctr1>0);
	ctr1++;
#ifdef SATABS
      __CPROVER_atomic_end(); }
#else
      }
#endif
      break;
    } else {
      if (NONDET) {
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
	{ __blockattribute__((atomic))
#endif
	  assume(myidx > 0);
	  assume(ctr2>0);
	  ctr2++;
#ifdef SATABS
      __CPROVER_atomic_end(); }
#else
	}
#endif
	break;
      } else {}
    }
  }

  readerprogress3 = 1; /*** readerprogress[me] = 1; ***/
  readerprogress3 = 2; /*** readerprogress[me] = 2 ***/

  /* rcu_read_unlock */
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
  { __blockattribute__((atomic))
#endif
      if (myidx <= 0) { ctr1--; } // use ctr1
      else { ctr2--; } // use ctr2
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
  }
#endif
}

Exemple #3

Fichier : read_write_lock.true.c Projet : chinuhub/ProofTraPar

void thr4() { //reader
  { __blockattribute__((atomic))
    assume(w==0);
    r = r+1;
  }
  y = x;
  assert(y == x);
  r = r-1;
}

Exemple #4

Fichier : read_write_lock.true.c Projet : chinuhub/ProofTraPar

void thr3() { //writer
  glb_init(w==0);
  glb_init(r==0);
  { __blockattribute__((atomic))
    assume(w==0);
    assume(r==0);
    w = 1;
  }
  x = 3;
  w = 0;
}

Exemple #5

Fichier : qrcu4.c Projet : chinuhub/ProofTraPar

void* qrcu_updater() {
  int i;
  int readerstart1;
  int readerstart2;
  int readerstart3;
  int sum;

  glb_init(idx==0);
  glb_init(ctr1==1);
  glb_init(ctr2==0);
  glb_init(readerprogress1==0);
  glb_init(readerprogress2==0);
  glb_init(readerprogress3==0);
  glb_init(mutex==0);  

  /* Snapshot reader state. */
  { __blockattribute__((atomic))
      readerstart1 = readerprogress1;
      readerstart2 = readerprogress2;
      readerstart3 = readerprogress3;
  }

  sum_unordered;
  if (sum <= 1) { sum_unordered; }
  if (sum > 1) {
    acquire(mutex);
    if (idx <= 0) { ctr2++; idx = 1; ctr1--; }
    else { ctr1++; idx = 0; ctr2--; }
    if (idx <= 0) { while (ctr2 > 0); }
    else { while (ctr1 > 0); }
    release(mutex);
  }

  /* Verify reader progress. */
  { __blockattribute__((atomic))
      if (NONDET) {
	assume(readerstart1 == 1);
	assume(readerprogress1 == 1);
	assert(0);
      } else {
	if (NONDET) {
	  assume(readerstart2 == 1);
	  assume(readerprogress2 == 1);
	  assert(0);
	} else {
	  if (NONDET) {
	    assume(readerstart2 == 1);
	    assume(readerprogress2 == 1);
	    assert(0);
	  } else { }
	}
      }
  }
}

Exemple #6

Fichier : main.c Projet : olivo/BP

void thr2() { //reader
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
  { __blockattribute__((atomic))
#endif
    assume(w==0);
    r = r+1;
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
  }
#endif
  y = x;
  assert(y == x);
  r = r-1;
}

Exemple #7

Fichier : main.c Projet : olivo/BP

void thr1() { //writer
#ifndef SATABS
  glb_init(w==0);
  glb_init(r==0);
#endif
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
  { __blockattribute__((atomic))
#endif
    assume(w==0);
    assume(r==0);
    w = 1;
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
  }
#endif
  x = 3;
  w = 0;
}

Exemple #8

Fichier : main.c Projet : olivo/BP

void* qrcu_reader1() {
  int myidx;
  
  /* rcu_read_lock */
  while (1) {
    myidx = idx;
    if (NONDET) {
#ifdef SATABS
      { __CPROVER_atomic_begin();
#else
      { __blockattribute__((atomic))
#endif
	assume(myidx <= 0);
	assume(ctr1>0);
	ctr1++;
#ifdef SATABS
      __CPROVER_atomic_end(); }
#else
      }
#endif
      break;
    } else {
      if (NONDET) {
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
	{ __blockattribute__((atomic))
#endif
	  assume(myidx > 0);
	  assume(ctr2>0);
	  ctr2++;
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
	}
#endif
	break;
      } else {}
    }
  }
  /* This is a simpler code for rcu_read_lock, but the frontend generates too many transitions
  while (1) {
    myidx = idx;
    if (myidx <= 0 && ctr1>0) {
      ctr1++; break;
    } else {
      if (myidx > 0 && ctr2>0) {
	ctr2++; break;
      } else {}
    }
    } */

  readerprogress1 = 1; /*** readerprogress[me] = 1; ***/
  readerprogress1 = 2; /*** readerprogress[me] = 2 ***/

  /* rcu_read_unlock */
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
  { __blockattribute__((atomic))
#endif
      if (myidx <= 0) { ctr1--; } // use ctr1
      else { ctr2--; } // use ctr2
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
  }
#endif
}

Exemple #9

Fichier : main.c Projet : olivo/BP

void* qrcu_updater() {
  int i;
  int readerstart1;
  int readerstart2;
  int readerstart3;
  int sum;

#ifndef SATABS
  glb_init(idx==0);
  glb_init(ctr1==1);
  glb_init(ctr2==0);
  glb_init(readerprogress1==0);
  glb_init(readerprogress2==0);
  glb_init(readerprogress3==0);
  glb_init(mutex==0);  
#endif

  /* Snapshot reader state. */
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
  { __blockattribute__((atomic))
#endif
      readerstart1 = readerprogress1;
      readerstart2 = readerprogress2;
      readerstart3 = readerprogress3;
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
  }
#endif

  sum_unordered;
  if (sum <= 1) { sum_unordered; }
  if (sum > 1) {
    acquire(mutex);
    if (idx <= 0) { ctr2++; idx = 1; ctr1--; }
    else { ctr1++; idx = 0; ctr2--; }
    if (idx <= 0) { while (ctr2 > 0); }
    else { while (ctr1 > 0); }
    release(mutex);
  }

  /* Verify reader progress. */
#ifdef SATABS
  { __CPROVER_atomic_begin();
#else
  { __blockattribute__((atomic))
#endif
      if (NONDET) {
	assume(readerstart1 == 1);
	assume(readerprogress1 == 1);
	assert(0);
      } else {
	if (NONDET) {
	  assume(readerstart2 == 1);
	  assume(readerprogress2 == 1);
	  assert(0);
	} else {
	  if (NONDET) {
	    assume(readerstart2 == 1);
	    assume(readerprogress2 == 1);
	    assert(0);
	  } else { }
	}
      }
#ifdef SATABS
  __CPROVER_atomic_end(); }
#else
  }
#endif
  /* Frontend generates too many transitions:
  { __blockattribute__((atomic))
      sum = 0;
      if (readerstart1 == 1 && readerprogress1 == 1)
	sum++;
      if (readerstart2 == 1 && readerprogress2 == 1)
	sum++;
      assert(sum == 0);
      } */

}

Exemple #10

Fichier : lu-fig2.fixed.c Projet : chinuhub/ProofTraPar

int main() {
  mThread = 0; start_main = 0; mStartLock = 0; __CNT__ = 0;
  pc1 = 1; pc2 = 1;
  while (1) {
    if (NONDET) { // thread thr1

      switch (pc1) {
      case 1: 
	PR_CreateThread__RES = 1; pc1 = 2; break;
      case 2:
	{__blockattribute__((atomic))
	  assume(mStartLock==0);
	  mStartLock = 1;
	}; pc1 = 3; break;
      case 3:
	start_main = 1; pc1 = 4; break;
      case 4:
	{__blockattribute__((atomic))
	    if (__CNT__ == 0) {
	      mThread = PR_CreateThread__RES;
	      __CNT__ = __CNT__ + 1;
	    } else {
	      assert(0);
	    }
	}; pc1 = 5; break;
      case 5:
	mStartLock = 0; pc1 = 6; break;
      case 6:
	if (mThread == 0) {
	  pc1 = 7; break;
	} else {
	  pc1 = 7; break;
	}
      }
	

    } else { // thread thr2

      switch (pc2) {
      case 1:
	self = mThread; pc2 = 2; break;
      case 2:
	if (start_main == 0) {
	  pc2 = 2; break;
	} else {
	  pc2 = 3; break;
	}
      case 3:
	{__blockattribute__((atomic))
	  assume(mStartLock==0);
	  mStartLock = 1;
	}; pc2 = 4; break;
      case 4:
	mStartLock = 0; pc2 = 5; break;
      case 5:
	{__blockattribute__((atomic))
	  rv = self;
	  __CNT__ = __CNT__ + 1;
	}; pc2 = 6; break;
      }

    }
  }