stasis-aries-wal/test/stasis/check_hazard.c

/*
 * check_hazard.c
 *
 *  Created on: Feb 7, 2012
 *      Author: sears
 */
/*---
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---*/

#include "../check_includes.h"

int hazard_finalize(void*p, void* ignored) {
  free(p);
  return 1;
}

#include <stasis/util/hazard.h>
#include <stasis/constants.h>
#include <stasis/util/random.h>

#include <sys/time.h>
#include <time.h>
#include <assert.h>

#define LOG_NAME   "check_lhtable.log"

/**
   @test
*/
START_TEST(hazard_smokeTest) {
  hazard_t * h = hazard_init(2, 2, 10, hazard_finalize, 0);
  char * a = stasis_malloc(1, char);
  char * b = stasis_malloc(1, char);
  *a = 0;
  *b = 1;
  char * ap = (char*)hazard_ref(h, 0, (hazard_ptr*)&a);
  char * bp = (char*)hazard_ref(h, 1, (hazard_ptr*)&b);
  hazard_free(h, ap);
  hazard_free(h, bp);
  hazard_scan(h,0);
  assert(*ap == 0);
  assert(*bp == 1);
  hazard_release(h, 0);
  hazard_release(h, 1);
  hazard_scan(h,0);
  hazard_deinit(h);
} END_TEST
/**
   @test
*/
#define NUM_OPS 1000
#define NUM_THREADS 1000
#define NUM_SLOTS 2000
hazard_ptr* slots;
pthread_mutex_t* muts;
void * hazard_worker(void * hp) {
  hazard_t * h = (hazard_t*)hp;
  for(int i = 0; i < NUM_OPS; i++) {
    int ptr_off = (int)stasis_util_random64(NUM_SLOTS);
    void * p = hazard_ref(h, 0, &slots[ptr_off]);
    if(p != NULL) {
      assert(*(int*)p == ptr_off);
    }
    hazard_release(h, 0);
    pthread_mutex_lock(&muts[ptr_off]);
    if(slots[ptr_off] != 0) {
      void* freeme = (void*)slots[ptr_off];
      slots[ptr_off] = 0;
      hazard_free(h, freeme);
    }
    pthread_mutex_unlock(&muts[ptr_off]);
  }
  return 0;
}
START_TEST(hazard_loadTest) {
  hazard_t * h = hazard_init(1, 1, 2, hazard_finalize, 0);
  slots = stasis_malloc(NUM_SLOTS, hazard_ptr);
  muts = stasis_malloc(NUM_SLOTS, pthread_mutex_t);
  for(int i = 0; i < NUM_SLOTS; i++) {
    slots[i] = (hazard_ptr) stasis_malloc(1, int);
    *(int*)slots[i] = i;
    pthread_mutex_init(&muts[i],0);
  }
  pthread_t * threads = stasis_malloc(NUM_THREADS, pthread_t);
  for(int i = 0; i < NUM_THREADS; i++) {
    pthread_create(&threads[i], 0, hazard_worker, h);
  }
  for(int i = 0; i < NUM_THREADS; i++) {
    pthread_join(threads[i], 0);
  }
  for(int i = 0; i < NUM_SLOTS; i++) {
    void * p = hazard_ref(h, 0, &slots[i]);
    if(p != NULL) {
      printf("found slot\n");
      slots[i] = 0;
      hazard_free(h, p);
    }
  }
  hazard_release(h, 0);
  free(threads);
  free(slots);
  free(muts);
  hazard_deinit(h);
} END_TEST

Suite * check_suite(void) {
  Suite *s = suite_create("hazard");
  /* Begin a new test */
  TCase *tc = tcase_create("hazard");
  tcase_set_timeout(tc, 0); // disable timeouts

  /* Sub tests are added, one per line, here */
  tcase_add_test(tc, hazard_smokeTest);
  tcase_add_test(tc, hazard_loadTest);

  /* --------------------------------------------- */

  tcase_add_checked_fixture(tc, setup, teardown);


  suite_add_tcase(s, tc);
  return s;
}

#include "../check_setup.h"