C++ize gpr_thread as grpc_core::Thread, make it 2-phase init (construct/Start)

2 files changed, 101 insertions, 1 deletions

diff --git a/test/core/gprpp/manual_constructor_test.cc b/test/core/gprpp/manual_constructor_test.cc
index 74777fe11c..af162ae8e8 100644
--- a/test/core/gprpp/manual_constructor_test.cc
+++ b/test/core/gprpp/manual_constructor_test.cc
@@ -26,7 +26,6 @@
 #include <stdlib.h>
 #include <cstring>
 
-#include "src/core/lib/gpr/thd.h"
 #include "src/core/lib/gprpp/abstract.h"
 #include "test/core/util/test_config.h"
 
diff --git a/test/core/gprpp/thd_test.cc b/test/core/gprpp/thd_test.cc
new file mode 100644
index 0000000000..d98f617288
--- /dev/null
+++ b/test/core/gprpp/thd_test.cc
@@ -0,0 +1,101 @@
+/*
+ *
+ * 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 thread support. */
+
+#include "src/core/lib/gprpp/thd.h"
+
+#include <new>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "test/core/util/test_config.h"
+
+#define NUM_THREADS 300
+
+struct test {
+  gpr_mu mu;
+  int n;
+  int is_done;
+  gpr_cv done_cv;
+};
+
+/* A Thread body.   Decrement t->n, and if is becomes zero, set t->done. */
+static void thd_body1(void* v) {
+  struct test* t = static_cast<struct test*>(v);
+  gpr_mu_lock(&t->mu);
+  t->n--;
+  if (t->n == 0) {
+    t->is_done = 1;
+    gpr_cv_signal(&t->done_cv);
+  }
+  gpr_mu_unlock(&t->mu);
+}
+
+/* Test that we can create a number of threads, wait for them, and join them. */
+static void test1(void) {
+  grpc_core::Thread thds[NUM_THREADS];
+  struct test t;
+  gpr_mu_init(&t.mu);
+  gpr_cv_init(&t.done_cv);
+  t.n = NUM_THREADS;
+  t.is_done = 0;
+  for (auto& th: thds) {
+    new (&th) grpc_core::Thread("grpc_thread_body1_test", &thd_body1, &t);
+    th.Start();
+  }
+  gpr_mu_lock(&t.mu);
+  while (!t.is_done) {
+    gpr_cv_wait(&t.done_cv, &t.mu, gpr_inf_future(GPR_CLOCK_REALTIME));
+  }
+  gpr_mu_unlock(&t.mu);
+  for (auto& th: thds) {
+    th.Join();
+  }
+  GPR_ASSERT(t.n == 0);
+}
+
+static void thd_body2(void* v) {}
+
+/* Test that we can create a number of threads and join them. */
+static void test2(void) {
+  grpc_core::Thread thds[NUM_THREADS];
+  for (auto& th: thds) {
+    bool ok;
+    new (&th) grpc_core::Thread("grpc_thread_body2_test", &thd_body2,
+				nullptr, &ok);
+    GPR_ASSERT(ok);
+    th.Start();
+  }
+  for (auto& th: thds) {
+    th.Join();
+  }
+}
+
+/* ------------------------------------------------- */
+
+int main(int argc, char* argv[]) {
+  grpc_test_init(argc, argv);
+  test1();
+  test2();
+  return 0;
+}