C++ (Cpp) gpr_slice_from_static_string Examples

Example #1

File: deadline_filter.c Project: wuyunhao/grpc

// Timer callback.
static void timer_callback(grpc_exec_ctx* exec_ctx, void* arg,
                           grpc_error* error) {
  grpc_call_element* elem = arg;
  grpc_deadline_state* deadline_state = elem->call_data;
  gpr_mu_lock(&deadline_state->timer_mu);
  deadline_state->timer_pending = false;
  gpr_mu_unlock(&deadline_state->timer_mu);
  if (error != GRPC_ERROR_CANCELLED) {
    gpr_slice msg = gpr_slice_from_static_string("Deadline Exceeded");
    grpc_call_element_send_cancel_with_message(
        exec_ctx, elem, GRPC_STATUS_DEADLINE_EXCEEDED, &msg);
    gpr_slice_unref(msg);
  }
  GRPC_CALL_STACK_UNREF(exec_ctx, deadline_state->call_stack, "deadline_timer");
}

Example #2

File: metadata.c Project: Alex-duzhichao/grpc

void grpc_mdctx_global_init(void) {
  size_t i, j;
  if (!g_forced_hash_seed) {
    g_hash_seed = (uint32_t)gpr_now(GPR_CLOCK_REALTIME).tv_nsec;
  }
  g_static_strtab_maxprobe = 0;
  g_static_mdtab_maxprobe = 0;
  /* build static tables */
  memset(g_static_mdtab, 0, sizeof(g_static_mdtab));
  memset(g_static_strtab, 0, sizeof(g_static_strtab));
  for (i = 0; i < GRPC_STATIC_MDSTR_COUNT; i++) {
    grpc_mdstr *elem = &grpc_static_mdstr_table[i];
    const char *str = grpc_static_metadata_strings[i];
    uint32_t hash = gpr_murmur_hash3(str, strlen(str), g_hash_seed);
    *(gpr_slice *)&elem->slice = gpr_slice_from_static_string(str);
    *(uint32_t *)&elem->hash = hash;
    for (j = 0;; j++) {
      size_t idx = (hash + j) % GPR_ARRAY_SIZE(g_static_strtab);
      if (g_static_strtab[idx] == NULL) {
        g_static_strtab[idx] = &grpc_static_mdstr_table[i];
        break;
      }
    }
    if (j > g_static_strtab_maxprobe) {
      g_static_strtab_maxprobe = j;
    }
  }
  for (i = 0; i < GRPC_STATIC_MDELEM_COUNT; i++) {
    grpc_mdelem *elem = &grpc_static_mdelem_table[i];
    grpc_mdstr *key =
        &grpc_static_mdstr_table[grpc_static_metadata_elem_indices[2 * i + 0]];
    grpc_mdstr *value =
        &grpc_static_mdstr_table[grpc_static_metadata_elem_indices[2 * i + 1]];
    uint32_t hash = GRPC_MDSTR_KV_HASH(key->hash, value->hash);
    *(grpc_mdstr **)&elem->key = key;
    *(grpc_mdstr **)&elem->value = value;
    for (j = 0;; j++) {
      size_t idx = (hash + j) % GPR_ARRAY_SIZE(g_static_mdtab);
      if (g_static_mdtab[idx] == NULL) {
        g_static_mdtab[idx] = elem;
        break;
      }
    }
    if (j > g_static_mdtab_maxprobe) {
      g_static_mdtab_maxprobe = j;
    }
  }
  /* initialize shards */
  for (i = 0; i < STRTAB_SHARD_COUNT; i++) {
    strtab_shard *shard = &g_strtab_shard[i];
    gpr_mu_init(&shard->mu);
    shard->count = 0;
    shard->capacity = INITIAL_STRTAB_CAPACITY;
    shard->strs = gpr_malloc(sizeof(*shard->strs) * shard->capacity);
    memset(shard->strs, 0, sizeof(*shard->strs) * shard->capacity);
  }
  for (i = 0; i < MDTAB_SHARD_COUNT; i++) {
    mdtab_shard *shard = &g_mdtab_shard[i];
    gpr_mu_init(&shard->mu);
    shard->count = 0;
    gpr_atm_no_barrier_store(&shard->free_estimate, 0);
    shard->capacity = INITIAL_MDTAB_CAPACITY;
    shard->elems = gpr_malloc(sizeof(*shard->elems) * shard->capacity);
    memset(shard->elems, 0, sizeof(*shard->elems) * shard->capacity);
  }
}