From 2f230033794fafdf10822568e763d4db68cf6c6b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 13 Apr 2024 23:14:49 +0200
Subject: Merging upstream version 1.9.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 delaypipe.cc | 58 +++++++++++++++++++++-------------------------------------
 1 file changed, 21 insertions(+), 37 deletions(-)

(limited to 'delaypipe.cc')

diff --git a/delaypipe.cc b/delaypipe.cc
index be363d6..ada096c 100644
--- a/delaypipe.cc
+++ b/delaypipe.cc
@@ -28,34 +28,23 @@
 template<class T>
 ObjectPipe<T>::ObjectPipe()
 {
-  if(pipe(d_fds))
-    unixDie("pipe");
-}
-
-template<class T>
-ObjectPipe<T>::~ObjectPipe()
-{
-  ::close(d_fds[0]);
-  if(d_fds[1] >= 0)
-    ::close(d_fds[1]);
+  auto [sender, receiver] = pdns::channel::createObjectQueue<T>(pdns::channel::SenderBlockingMode::SenderBlocking, pdns::channel::ReceiverBlockingMode::ReceiverNonBlocking, 0, false);
+  d_sender = std::move(sender);
+  d_receiver = std::move(receiver);
 }
 
 template<class T>
 void ObjectPipe<T>::close()
 {
-  if(d_fds[1] < 0)
-    return;
-  ::close(d_fds[1]); // the writing side
-  d_fds[1]=-1;
+  d_sender.close();
 }
 
 template<class T>
 void ObjectPipe<T>::write(T& t)
 {
-  auto ptr = new T(t);
-  if(::write(d_fds[1], &ptr, sizeof(ptr)) != sizeof(ptr)) {
-    delete ptr;
-    unixDie("write");
+  auto ptr = std::make_unique<T>(t);
+  if (!d_sender.send(std::move(ptr))) {
+    unixDie("writing to the DelayPipe");
   }
 }
 
@@ -63,7 +52,7 @@ template<class T>
 int ObjectPipe<T>::readTimeout(T* t, double msec)
 {
   while (true) {
-    int ret = waitForData(d_fds[0], 0, 1000*msec);
+    int ret = waitForData(d_receiver.getDescriptor(), 0, 1000*msec);
     if (ret < 0) {
       if (errno == EINTR) {
         continue;
@@ -74,26 +63,21 @@ int ObjectPipe<T>::readTimeout(T* t, double msec)
       return -1;
     }
 
-    T* ptr = nullptr;
-    ret = ::read(d_fds[0], &ptr, sizeof(ptr)); // this is BLOCKING!
-
-    if (ret < 0) {
-      if (errno == EINTR) {
+    try {
+      auto tmp = d_receiver.receive();
+      if (!tmp) {
+        if (d_receiver.isClosed()) {
+          return 0;
+        }
         continue;
       }
-      unixDie("read");
-    }
-    else if (ret == 0) {
-      return false;
-    }
 
-    if (ret != sizeof(ptr)) {
-      throw std::runtime_error("Partial read, should not happen 2");
+      *t = **tmp;
+      return 1;
+    }
+    catch (const std::exception& e) {
+      throw std::runtime_error("reading from the delay pipe: " + std::string(e.what()));
     }
-
-    *t = *ptr;
-    delete ptr;
-    return 1;
   }
 }
 
@@ -149,7 +133,7 @@ void DelayPipe<T>::worker()
        The other special case is that the first we have to do.. is in the past, so we need to do it
        immediately. */
 
-       
+
     double delay=-1;  // infinite
     struct timespec now;
     if(!d_work.empty()) {
@@ -160,7 +144,7 @@ void DelayPipe<T>::worker()
       }
     }
     if(delay != 0 ) {
-      int ret = d_pipe.readTimeout(&c, delay); 
+      int ret = d_pipe.readTimeout(&c, delay);
       if(ret > 0) {  // we got an object
         d_work.emplace(c.when, c.what);
       }
-- 
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