From 34a57d0346afe95e11104462c30dc468b0cb0b89 Mon Sep 17 00:00:00 2001
From: Yash Tibrewal <yashkt@google.com>
Date: Mon, 23 Oct 2017 15:33:21 -0700
Subject: rename all test core files to cc and a lot of C++ style conversions

---
 test/core/support/sync_test.c | 453 ------------------------------------------
 1 file changed, 453 deletions(-)
 delete mode 100644 test/core/support/sync_test.c

(limited to 'test/core/support/sync_test.c')

diff --git a/test/core/support/sync_test.c b/test/core/support/sync_test.c
deleted file mode 100644
index 178d77edcd..0000000000
--- a/test/core/support/sync_test.c
+++ /dev/null
@@ -1,453 +0,0 @@
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-/* Test of gpr synchronization support. */
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/sync.h>
-#include <grpc/support/thd.h>
-#include <grpc/support/time.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "test/core/util/test_config.h"
-
-/* ==================Example use of interface===================
-
-   A producer-consumer queue of up to N integers,
-   illustrating the use of the calls in this interface.  */
-
-#define N 4
-
-typedef struct queue {
-  gpr_cv non_empty; /* Signalled when length becomes non-zero. */
-  gpr_cv non_full;  /* Signalled when length becomes non-N. */
-  gpr_mu mu;        /* Protects all fields below.
-                       (That is, except during initialization or
-                       destruction, the fields below should be accessed
-                       only by a thread that holds mu.) */
-  int head;         /* Index of head of queue 0..N-1. */
-  int length;       /* Number of valid elements in queue 0..N. */
-  int elem[N];      /* elem[head .. head+length-1] are queue elements. */
-} queue;
-
-/* Initialize *q. */
-void queue_init(queue *q) {
-  gpr_mu_init(&q->mu);
-  gpr_cv_init(&q->non_empty);
-  gpr_cv_init(&q->non_full);
-  q->head = 0;
-  q->length = 0;
-}
-
-/* Free storage associated with *q. */
-void queue_destroy(queue *q) {
-  gpr_mu_destroy(&q->mu);
-  gpr_cv_destroy(&q->non_empty);
-  gpr_cv_destroy(&q->non_full);
-}
-
-/* Wait until there is room in *q, then append x to *q. */
-void queue_append(queue *q, int x) {
-  gpr_mu_lock(&q->mu);
-  /* To wait for a predicate without a deadline, loop on the negation of the
-     predicate, and use gpr_cv_wait(..., gpr_inf_future(GPR_CLOCK_REALTIME))
-     inside the loop
-     to release the lock, wait, and reacquire on each iteration.  Code that
-     makes the condition true should use gpr_cv_broadcast() on the
-     corresponding condition variable.  The predicate must be on state
-     protected by the lock.  */
-  while (q->length == N) {
-    gpr_cv_wait(&q->non_full, &q->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
-  }
-  if (q->length == 0) { /* Wake threads blocked in queue_remove(). */
-    /* It's normal to use gpr_cv_broadcast() or gpr_signal() while
-       holding the lock. */
-    gpr_cv_broadcast(&q->non_empty);
-  }
-  q->elem[(q->head + q->length) % N] = x;
-  q->length++;
-  gpr_mu_unlock(&q->mu);
-}
-
-/* If it can be done without blocking, append x to *q and return non-zero.
-   Otherwise return 0. */
-int queue_try_append(queue *q, int x) {
-  int result = 0;
-  if (gpr_mu_trylock(&q->mu)) {
-    if (q->length != N) {
-      if (q->length == 0) { /* Wake threads blocked in queue_remove(). */
-        gpr_cv_broadcast(&q->non_empty);
-      }
-      q->elem[(q->head + q->length) % N] = x;
-      q->length++;
-      result = 1;
-    }
-    gpr_mu_unlock(&q->mu);
-  }
-  return result;
-}
-
-/* Wait until the *q is non-empty or deadline abs_deadline passes.  If the
-   queue is non-empty, remove its head entry, place it in *head, and return
-   non-zero.  Otherwise return 0.  */
-int queue_remove(queue *q, int *head, gpr_timespec abs_deadline) {
-  int result = 0;
-  gpr_mu_lock(&q->mu);
-  /* To wait for a predicate with a deadline, loop on the negation of the
-     predicate or until gpr_cv_wait() returns true.  Code that makes
-     the condition true should use gpr_cv_broadcast() on the corresponding
-     condition variable.  The predicate must be on state protected by the
-     lock. */
-  while (q->length == 0 && !gpr_cv_wait(&q->non_empty, &q->mu, abs_deadline)) {
-  }
-  if (q->length != 0) { /* Queue is non-empty. */
-    result = 1;
-    if (q->length == N) { /* Wake threads blocked in queue_append(). */
-      gpr_cv_broadcast(&q->non_full);
-    }
-    *head = q->elem[q->head];
-    q->head = (q->head + 1) % N;
-    q->length--;
-  } /* else deadline exceeded */
-  gpr_mu_unlock(&q->mu);
-  return result;
-}
-
-/* ------------------------------------------------- */
-/* Tests for gpr_mu and gpr_cv, and the queue example. */
-struct test {
-  int threads; /* number of threads */
-
-  int64_t iterations; /* number of iterations per thread */
-  int64_t counter;
-  int thread_count; /* used to allocate thread ids */
-  int done;         /* threads not yet completed */
-  int incr_step;    /* how much to increment/decrement refcount each time */
-
-  gpr_mu mu; /* protects iterations, counter, thread_count, done */
-
-  gpr_cv cv; /* signalling depends on test */
-
-  gpr_cv done_cv; /* signalled when done == 0 */
-
-  queue q;
-
-  gpr_stats_counter stats_counter;
-
-  gpr_refcount refcount;
-  gpr_refcount thread_refcount;
-  gpr_event event;
-};
-
-/* Return pointer to a new struct test. */
-static struct test *test_new(int threads, int64_t iterations, int incr_step) {
-  struct test *m = gpr_malloc(sizeof(*m));
-  m->threads = threads;
-  m->iterations = iterations;
-  m->counter = 0;
-  m->thread_count = 0;
-  m->done = threads;
-  m->incr_step = incr_step;
-  gpr_mu_init(&m->mu);
-  gpr_cv_init(&m->cv);
-  gpr_cv_init(&m->done_cv);
-  queue_init(&m->q);
-  gpr_stats_init(&m->stats_counter, 0);
-  gpr_ref_init(&m->refcount, 0);
-  gpr_ref_init(&m->thread_refcount, threads);
-  gpr_event_init(&m->event);
-  return m;
-}
-
-/* Return pointer to a new struct test. */
-static void test_destroy(struct test *m) {
-  gpr_mu_destroy(&m->mu);
-  gpr_cv_destroy(&m->cv);
-  gpr_cv_destroy(&m->done_cv);
-  queue_destroy(&m->q);
-  gpr_free(m);
-}
-
-/* Create m->threads threads, each running (*body)(m) */
-static void test_create_threads(struct test *m, void (*body)(void *arg)) {
-  gpr_thd_id id;
-  int i;
-  for (i = 0; i != m->threads; i++) {
-    GPR_ASSERT(gpr_thd_new(&id, body, m, NULL));
-  }
-}
-
-/* Wait until all threads report done. */
-static void test_wait(struct test *m) {
-  gpr_mu_lock(&m->mu);
-  while (m->done != 0) {
-    gpr_cv_wait(&m->done_cv, &m->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
-  }
-  gpr_mu_unlock(&m->mu);
-}
-
-/* Get an integer thread id in the raneg 0..threads-1 */
-static int thread_id(struct test *m) {
-  int id;
-  gpr_mu_lock(&m->mu);
-  id = m->thread_count++;
-  gpr_mu_unlock(&m->mu);
-  return id;
-}
-
-/* Indicate that a thread is done, by decrementing m->done
-   and signalling done_cv if m->done==0. */
-static void mark_thread_done(struct test *m) {
-  gpr_mu_lock(&m->mu);
-  GPR_ASSERT(m->done != 0);
-  m->done--;
-  if (m->done == 0) {
-    gpr_cv_signal(&m->done_cv);
-  }
-  gpr_mu_unlock(&m->mu);
-}
-
-/* Test several threads running (*body)(struct test *m) for increasing settings
-   of m->iterations, until about timeout_s to 2*timeout_s seconds have elapsed.
-   If extra!=NULL, run (*extra)(m) in an additional thread.
-   incr_step controls by how much m->refcount should be incremented/decremented
-   (if at all) each time in the tests.
-   */
-static void test(const char *name, void (*body)(void *m),
-                 void (*extra)(void *m), int timeout_s, int incr_step) {
-  int64_t iterations = 1024;
-  struct test *m;
-  gpr_timespec start = gpr_now(GPR_CLOCK_REALTIME);
-  gpr_timespec time_taken;
-  gpr_timespec deadline = gpr_time_add(
-      start, gpr_time_from_micros((int64_t)timeout_s * 1000000, GPR_TIMESPAN));
-  fprintf(stderr, "%s:", name);
-  while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0) {
-    iterations <<= 1;
-    fprintf(stderr, " %ld", (long)iterations);
-    m = test_new(10, iterations, incr_step);
-    if (extra != NULL) {
-      gpr_thd_id id;
-      GPR_ASSERT(gpr_thd_new(&id, extra, m, NULL));
-      m->done++; /* one more thread to wait for */
-    }
-    test_create_threads(m, body);
-    test_wait(m);
-    if (m->counter != m->threads * m->iterations * m->incr_step) {
-      fprintf(stderr, "counter %ld  threads %d  iterations %ld\n",
-              (long)m->counter, m->threads, (long)m->iterations);
-      GPR_ASSERT(0);
-    }
-    test_destroy(m);
-  }
-  time_taken = gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), start);
-  fprintf(stderr, " done %lld.%09d s\n", (long long)time_taken.tv_sec,
-          (int)time_taken.tv_nsec);
-}
-
-/* Increment m->counter on each iteration; then mark thread as done.  */
-static void inc(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  for (i = 0; i != m->iterations; i++) {
-    gpr_mu_lock(&m->mu);
-    m->counter++;
-    gpr_mu_unlock(&m->mu);
-  }
-  mark_thread_done(m);
-}
-
-/* Increment m->counter under lock acquired with trylock, m->iterations times;
-   then mark thread as done.  */
-static void inctry(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  for (i = 0; i != m->iterations;) {
-    if (gpr_mu_trylock(&m->mu)) {
-      m->counter++;
-      gpr_mu_unlock(&m->mu);
-      i++;
-    }
-  }
-  mark_thread_done(m);
-}
-
-/* Increment counter only when (m->counter%m->threads)==m->thread_id; then mark
-   thread as done.  */
-static void inc_by_turns(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  int id = thread_id(m);
-  for (i = 0; i != m->iterations; i++) {
-    gpr_mu_lock(&m->mu);
-    while ((m->counter % m->threads) != id) {
-      gpr_cv_wait(&m->cv, &m->mu, gpr_inf_future(GPR_CLOCK_REALTIME));
-    }
-    m->counter++;
-    gpr_cv_broadcast(&m->cv);
-    gpr_mu_unlock(&m->mu);
-  }
-  mark_thread_done(m);
-}
-
-/* Wait a millisecond and increment counter on each iteration;
-   then mark thread as done. */
-static void inc_with_1ms_delay(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  for (i = 0; i != m->iterations; i++) {
-    gpr_timespec deadline;
-    gpr_mu_lock(&m->mu);
-    deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                            gpr_time_from_micros(1000, GPR_TIMESPAN));
-    while (!gpr_cv_wait(&m->cv, &m->mu, deadline)) {
-    }
-    m->counter++;
-    gpr_mu_unlock(&m->mu);
-  }
-  mark_thread_done(m);
-}
-
-/* Wait a millisecond and increment counter on each iteration, using an event
-   for timing; then mark thread as done. */
-static void inc_with_1ms_delay_event(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  for (i = 0; i != m->iterations; i++) {
-    gpr_timespec deadline;
-    deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                            gpr_time_from_micros(1000, GPR_TIMESPAN));
-    GPR_ASSERT(gpr_event_wait(&m->event, deadline) == NULL);
-    gpr_mu_lock(&m->mu);
-    m->counter++;
-    gpr_mu_unlock(&m->mu);
-  }
-  mark_thread_done(m);
-}
-
-/* Produce m->iterations elements on queue m->q, then mark thread as done.
-   Even threads use queue_append(), and odd threads use queue_try_append()
-   until it succeeds. */
-static void many_producers(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  int x = thread_id(m);
-  if ((x & 1) == 0) {
-    for (i = 0; i != m->iterations; i++) {
-      queue_append(&m->q, 1);
-    }
-  } else {
-    for (i = 0; i != m->iterations; i++) {
-      while (!queue_try_append(&m->q, 1)) {
-      }
-    }
-  }
-  mark_thread_done(m);
-}
-
-/* Consume elements from m->q until m->threads*m->iterations are seen,
-   wait an extra second to confirm that no more elements are arriving,
-   then mark thread as done. */
-static void consumer(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t n = m->iterations * m->threads;
-  int64_t i;
-  int value;
-  for (i = 0; i != n; i++) {
-    queue_remove(&m->q, &value, gpr_inf_future(GPR_CLOCK_REALTIME));
-  }
-  gpr_mu_lock(&m->mu);
-  m->counter = n;
-  gpr_mu_unlock(&m->mu);
-  GPR_ASSERT(
-      !queue_remove(&m->q, &value,
-                    gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
-                                 gpr_time_from_micros(1000000, GPR_TIMESPAN))));
-  mark_thread_done(m);
-}
-
-/* Increment m->stats_counter m->iterations times, transfer counter value to
-   m->counter, then mark thread as done.  */
-static void statsinc(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  for (i = 0; i != m->iterations; i++) {
-    gpr_stats_inc(&m->stats_counter, 1);
-  }
-  gpr_mu_lock(&m->mu);
-  m->counter = gpr_stats_read(&m->stats_counter);
-  gpr_mu_unlock(&m->mu);
-  mark_thread_done(m);
-}
-
-/* Increment m->refcount by m->incr_step for m->iterations times. Decrement
-   m->thread_refcount once, and if it reaches zero, set m->event to (void*)1;
-   then mark thread as done.  */
-static void refinc(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t i;
-  for (i = 0; i != m->iterations; i++) {
-    if (m->incr_step == 1) {
-      gpr_ref(&m->refcount);
-    } else {
-      gpr_refn(&m->refcount, m->incr_step);
-    }
-  }
-  if (gpr_unref(&m->thread_refcount)) {
-    gpr_event_set(&m->event, (void *)1);
-  }
-  mark_thread_done(m);
-}
-
-/* Wait until m->event is set to (void *)1, then decrement m->refcount by 1
-   (m->threads * m->iterations * m->incr_step) times, and ensure that the last
-   decrement caused the counter to reach zero, then mark thread as done.  */
-static void refcheck(void *v /*=m*/) {
-  struct test *m = v;
-  int64_t n = m->iterations * m->threads * m->incr_step;
-  int64_t i;
-  GPR_ASSERT(gpr_event_wait(&m->event, gpr_inf_future(GPR_CLOCK_REALTIME)) ==
-             (void *)1);
-  GPR_ASSERT(gpr_event_get(&m->event) == (void *)1);
-  for (i = 1; i != n; i++) {
-    GPR_ASSERT(!gpr_unref(&m->refcount));
-    m->counter++;
-  }
-  GPR_ASSERT(gpr_unref(&m->refcount));
-  m->counter++;
-  mark_thread_done(m);
-}
-
-/* ------------------------------------------------- */
-
-int main(int argc, char *argv[]) {
-  grpc_test_init(argc, argv);
-  test("mutex", &inc, NULL, 1, 1);
-  test("mutex try", &inctry, NULL, 1, 1);
-  test("cv", &inc_by_turns, NULL, 1, 1);
-  test("timedcv", &inc_with_1ms_delay, NULL, 1, 1);
-  test("queue", &many_producers, &consumer, 10, 1);
-  test("stats_counter", &statsinc, NULL, 1, 1);
-  test("refcount by 1", &refinc, &refcheck, 1, 1);
-  test("refcount by 3", &refinc, &refcheck, 1, 3); /* incr_step of 3 is an
-                                                      arbitrary choice. Any
-                                                      number > 1 is okay here */
-  test("timedevent", &inc_with_1ms_delay_event, NULL, 1, 1);
-  return 0;
-}
-- 
cgit v1.2.3