fix undefined reference to operator delete for MPMCQueue interface class

build.yaml

@@ -3268,15 +3268,6 @@ targets:
   - grpc
   - gpr
   uses_polling: false
-- name: mpmcqueue_test
-  build: test
-  language: c
-  src:
-  - test/core/iomgr/mpmcqueue_test.cc
-  deps:
-  - grpc_test_util
-  - grpc
-  - gpr
 - name: multiple_server_queues_test
   build: test
   language: c
@@ -5239,6 +5230,17 @@ targets:
   - grpc++
   - grpc
   - gpr
+- name: mpmcqueue_test
+  build: test
+  language: c++
+  src:
+  - test/core/iomgr/mpmcqueue_test.cc
+  deps:
+  - grpc++_test_util
+  - grpc_test_util
+  - grpc++
+  - grpc
+  - gpr
 - name: nonblocking_test
   gtest: true
   build: test

src/core/lib/iomgr/threadpool/mpmcqueue.cc

@@ -16,46 +16,42 @@
  *
  */
 
-#include <grpc/support/port_platform.h>
-
 #include "src/core/lib/iomgr/threadpool/mpmcqueue.h"
 
-#include <string.h>
-
 #include <grpc/support/alloc.h>
 #include <grpc/support/cpu.h>
 #include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
+#include <string.h>
 
 #include "src/core/lib/gprpp/sync.h"
 
 namespace grpc_core {
 
-
-
 inline void* MPMCQueue::PopFront() {
   void* result = queue_head_->content;
   Node* head_to_remove = queue_head_;
   queue_head_ = queue_head_->next;
 
   count_.Store(count_.Load(MemoryOrder::RELAXED) - 1, MemoryOrder::RELAXED);
-  gpr_timespec wait_time = gpr_time_sub(gpr_now(GPR_CLOCK_PRECISE),
-                                        head_to_remove->insert_time);
-  // gpr_free(head_to_remove);
+  gpr_timespec wait_time =
+      gpr_time_sub(gpr_now(GPR_CLOCK_PRECISE), head_to_remove->insert_time);
+
   delete head_to_remove;
 
   // Update Stats info
   stats_.num_completed++;
-  stats_.total_queue_cycles = gpr_time_add(stats_.total_queue_cycles,
-                                           wait_time);
+  stats_.total_queue_cycles =
+      gpr_time_add(stats_.total_queue_cycles, wait_time);
   stats_.max_queue_cycles = gpr_time_max(
       gpr_convert_clock_type(stats_.max_queue_cycles, GPR_TIMESPAN), wait_time);
 
   if (count_.Load(MemoryOrder::RELAXED) == 0) {
-    stats_.busy_time_cycles = gpr_time_add(
-        stats_.busy_time_cycles,
-        gpr_time_sub(gpr_now(GPR_CLOCK_PRECISE), busy_time));
+    stats_.busy_time_cycles =
+        gpr_time_add(stats_.busy_time_cycles,
+                     gpr_time_sub(gpr_now(GPR_CLOCK_PRECISE), busy_time));
   }
 
   // Singal waiting thread
@@ -66,7 +62,8 @@ inline void* MPMCQueue::PopFront() {
   return result;
 }
 
-MPMCQueue::MPMCQueue() : num_waiters_(0), queue_head_(0), queue_tail_(0) {
+MPMCQueue::MPMCQueue() : num_waiters_(0), queue_head_(nullptr),
+                         queue_tail_(nullptr) {
   count_.Store(0, MemoryOrder::RELAXED);
 }
 
@@ -80,10 +77,7 @@ MPMCQueue::~MPMCQueue() {
 
 void MPMCQueue::Put(void* elem) {
   MutexLock l(&mu_);
-  // Node* new_node = static_cast<Node*>(gpr_malloc(sizeof(Node)));
-  // new_node->next = nullptr;
-  // new_node->content = elem;
-  // new_node->insert_time = gpr_now(GPR_CLOCK_PRECISE);
+
   Node* new_node = static_cast<Node*>(new Node(elem));
   if (count_.Load(MemoryOrder::RELAXED) == 0) {
     busy_time = gpr_now(GPR_CLOCK_PRECISE);
@@ -131,12 +125,12 @@ void MPMCQueue::PrintStats() {
 MPMCQueue::Stats* MPMCQueue::queue_stats() {
   MPMCQueue::Stats* result = new Stats();
   MutexLock l(&mu_);
-  result->total_queue_cycles = gpr_time_add(result->total_queue_cycles,
-                                            stats_.total_queue_cycles);
-  result->max_queue_cycles = gpr_time_add(result->max_queue_cycles,
-                                          stats_.max_queue_cycles);
-  result->busy_time_cycles = gpr_time_add(result->busy_time_cycles,
-                                          stats_.busy_time_cycles);
+  result->total_queue_cycles =
+      gpr_time_add(result->total_queue_cycles, stats_.total_queue_cycles);
+  result->max_queue_cycles =
+      gpr_time_add(result->max_queue_cycles, stats_.max_queue_cycles);
+  result->busy_time_cycles =
+      gpr_time_add(result->busy_time_cycles, stats_.busy_time_cycles);
   return result;
 }
 

src/core/lib/iomgr/threadpool/mpmcqueue.h

@@ -16,15 +16,15 @@
  *
  */
 
-#ifndef GRPC_CORE_LIB_IOMGR_MPMCQUEUE_H
-#define GRPC_CORE_LIB_IOMGR_MPMCQUEUE_H
+#ifndef GRPC_CORE_LIB_IOMGR_THREADPOOL_MPMCQUEUE_H
+#define GRPC_CORE_LIB_IOMGR_THREADPOOL_MPMCQUEUE_H
 
+#include <grpc/support/alloc.h>
 #include <grpc/support/port_platform.h>
+#include <grpc/support/time.h>
 
-#include <grpc/support/alloc.h>
 #include "src/core/lib/gprpp/atomic.h"
 #include "src/core/lib/gprpp/sync.h"
-#include <grpc/support/time.h>
 
 namespace grpc_core {
 
@@ -36,7 +36,7 @@ class MPMCQueueInterface {
 
   // Put elem into queue immediately at the end of queue.
   // This might cause to block on full queue depending on implementation.
-  virtual void Put(void *elem) = 0;
+  virtual void Put(void* elem) = 0;
 
   // Remove the oldest element from the queue and return it.
   // This might cause to block on empty queue depending on implementation.
@@ -48,16 +48,16 @@ class MPMCQueueInterface {
 
 class MPMCQueue : public MPMCQueueInterface {
  public:
-  struct Stats {                  // Stats of queue
-    uint64_t num_started;         // Number of elements have been added to queue
-    uint64_t num_completed;       // Number of elements have been removed from
-                                  // the queue
-    gpr_timespec total_queue_cycles;   // Total waiting time that all the
-                                       // removed elements have spent in queue
-    gpr_timespec max_queue_cycles;     // Max waiting time among all removed
-                                       // elements
-    gpr_timespec busy_time_cycles;     // Accumulated amount of time that queue
-                                       // was not empty
+  struct Stats {             // Stats of queue
+    uint64_t num_started;    // Number of elements have been added to queue
+    uint64_t num_completed;  // Number of elements have been removed from
+                             // the queue
+    gpr_timespec total_queue_cycles;  // Total waiting time that all the
+                                      // removed elements have spent in queue
+    gpr_timespec max_queue_cycles;    // Max waiting time among all removed
+                                      // elements
+    gpr_timespec busy_time_cycles;    // Accumulated amount of time that queue
+                                      // was not empty
 
     Stats() {
       num_started = 0;
@@ -66,23 +66,7 @@ class MPMCQueue : public MPMCQueueInterface {
       max_queue_cycles = gpr_time_0(GPR_TIMESPAN);
       busy_time_cycles = gpr_time_0(GPR_TIMESPAN);
     }
-    void* operator new(size_t n) {
-      void* p = gpr_malloc(n);
-      return p;
-    }
-
-    void operator delete(void* p) {
-      gpr_free(p);
-    }
   };
-  void* operator new(size_t n) {
-    void* p = gpr_malloc(n);
-    return p;
-  }
-
-  void operator delete(void* p) {
-    gpr_free(p);
-  }
   // Create a new Multiple-Producer-Multiple-Consumer Queue. The queue created
   // will have infinite length.
   explicit MPMCQueue();
@@ -115,34 +99,26 @@ class MPMCQueue : public MPMCQueueInterface {
   void* PopFront();
 
   struct Node {
-    Node *next;                  // Linking
-    void *content;               // Points to actual element
-    gpr_timespec insert_time;    // Time for stats
+    Node* next;                // Linking
+    void* content;             // Points to actual element
+    gpr_timespec insert_time;  // Time for stats
     Node(void* c) : content(c) {
       next = nullptr;
       insert_time = gpr_now(GPR_CLOCK_PRECISE);
     }
-    void* operator new(size_t n) {
-      void* p = gpr_malloc(n);
-      return p;
-    }
-
-    void operator delete(void* p) {
-      gpr_free(p);
-    }
   };
 
-  Mutex mu_;                    // Protecting lock
-  CondVar wait_nonempty_;       // Wait on empty queue on get
-  int num_waiters_;             // Number of waiters
+  Mutex mu_;               // Protecting lock
+  CondVar wait_nonempty_;  // Wait on empty queue on get
+  int num_waiters_;        // Number of waiters
 
-  Node *queue_head_;            // Head of the queue, remove position
-  Node *queue_tail_;            // End of queue, insert position
-  Atomic<uint64_t> count_;      // Number of elements in queue
-  Stats stats_;                 // Stats info
-  gpr_timespec busy_time;       // Start time of busy queue
+  Node* queue_head_;        // Head of the queue, remove position
+  Node* queue_tail_;        // End of queue, insert position
+  Atomic<uint64_t> count_;  // Number of elements in queue
+  Stats stats_;             // Stats info
+  gpr_timespec busy_time;   // Start time of busy queue
 };
 
 }  // namespace grpc_core
 
-#endif /* GRPC_CORE_LIB_IOMGR_MPMCQUEUE_H */
+#endif /* GRPC_CORE_LIB_IOMGR_THREADPOOL_MPMCQUEUE_H */

test/core/iomgr/mpmcqueue_test.cc

@@ -42,17 +42,7 @@ struct WorkItem {
   int index;
   bool done;
 
-  WorkItem(int i) : index(i) {
-    done = false;
-  }
-  void* operator new(size_t n) {
-    void* p = gpr_malloc(n);
-    return p;
-  }
-
-  void operator delete(void* p) {
-    gpr_free(p);
-  }
+  WorkItem(int i) : index(i) { done = false; }
 };
 
 static void test_small_queue(void) {
@@ -132,38 +122,28 @@ static void test_large_queue(void) {
 class WorkThread {
  public:
   WorkThread(grpc_core::MPMCQueue* mpmcqueue, int start_index, int num_items)
-      : start_index_(start_index), num_items_(num_items),
+      : start_index_(start_index),
+        num_items_(num_items),
         mpmcqueue_(mpmcqueue) {
     items_ = NULL;
     thd_ = grpc_core::Thread(
         "mpmcq_test_mt_put_thd",
-        [](void* th) { static_cast<WorkThread*>(th)->Run(); },
-        this);
+        [](void* th) { static_cast<WorkThread*>(th)->Run(); }, this);
   }
   ~WorkThread() {
     for (int i = 0; i < num_items_; ++i) {
       GPR_ASSERT(items_[i]->done);
       delete items_[i];
     }
-    gpr_free(items_);
+    delete[] items_;
   }
 
   void Start() { thd_.Start(); }
   void Join() { thd_.Join(); }
 
-  void* operator new(size_t n) {
-    void* p = gpr_malloc(n);
-    return p;
-  }
-
-  void operator delete(void* p) {
-    gpr_free(p);
-  }
-
  private:
   void Run() {
-    items_ = static_cast<WorkItem**>(
-        gpr_malloc(sizeof(WorkItem*) * num_items_));
+    items_ = new WorkItem*[num_items_];
     for (int i = 0; i < num_items_; ++i) {
       items_[i] = new WorkItem(start_index_ + i);
       mpmcqueue_->Put(items_[i]);
@@ -177,7 +157,6 @@ class WorkThread {
   WorkItem** items_;
 };
 
-
 static void test_many_get_thd(void* args) {
   grpc_core::MPMCQueue* mpmcqueue = static_cast<grpc_core::MPMCQueue*>(args);
 
@@ -199,8 +178,7 @@ static void test_many_thread(void) {
   const int num_work_thd = 10;
   const int num_get_thd = 20;
   grpc_core::MPMCQueue mpmcqueue;
-  WorkThread** work_thds =
-      static_cast<WorkThread**>(gpr_malloc(sizeof(WorkThread*) * num_work_thd));
+  WorkThread** work_thds = new WorkThread*[num_work_thd];
   grpc_core::Thread get_thds[num_get_thd];
 
   gpr_log(GPR_DEBUG, "Fork WorkThread...");
@@ -212,8 +190,8 @@ static void test_many_thread(void) {
   gpr_log(GPR_DEBUG, "WorkThread Started.");
   gpr_log(GPR_DEBUG, "For Getter Thread...");
   for (int i = 0; i < num_get_thd; ++i) {
-    get_thds[i] = grpc_core::Thread("mpmcq_test_mt_get_thd",
-                                    test_many_get_thd, &mpmcqueue);
+    get_thds[i] = grpc_core::Thread("mpmcq_test_mt_get_thd", test_many_get_thd,
+                                    &mpmcqueue);
     get_thds[i].Start();
   }
   gpr_log(GPR_DEBUG, "Getter Thread Started.");
@@ -234,11 +212,10 @@ static void test_many_thread(void) {
   for (int i = 0; i < num_work_thd; ++i) {
     delete work_thds[i];
   }
-  gpr_free(work_thds);
+  delete[] work_thds;
   gpr_log(GPR_DEBUG, "Done.");
 }
 
-
 int main(int argc, char** argv) {
   grpc::testing::TestEnvironment env(argc, argv);
   grpc_init();