From 7e013dc6986fa9d6dc8616d494d9de5d192c4c69 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Wed, 12 Jul 2006 06:34:30 +0000
Subject: Factored out Thread (and Slave, an explicitly signal-driven thread)

git-svn-id: http://svn.drobilla.net/lad/ingen@87 a436a847-0d15-0410-975c-d299462d15a1
---
 src/libs/engine/PostProcessor.cpp | 90 ++++++---------------------------------
 1 file changed, 12 insertions(+), 78 deletions(-)

(limited to 'src/libs/engine/PostProcessor.cpp')

diff --git a/src/libs/engine/PostProcessor.cpp b/src/libs/engine/PostProcessor.cpp
index e339f757..8b68159e 100644
--- a/src/libs/engine/PostProcessor.cpp
+++ b/src/libs/engine/PostProcessor.cpp
@@ -29,94 +29,28 @@ using std::cerr; using std::cout; using std::endl;
 
 namespace Om {
 
-bool PostProcessor::m_process_thread_exit_flag = false;
-
 
 PostProcessor::PostProcessor(size_t queue_size)
-: m_events(queue_size),
-  m_thread_exists(false),
-  m_semaphore(0)
-{
-}
-
-
-PostProcessor::~PostProcessor()
-{
-	stop();
-}
-
-
-/** Start the process thread.
- */
-void
-PostProcessor::start() 
-{
-	cout << "[PostProcessor] Starting." << endl;
-
-	pthread_attr_t attr;
-	pthread_attr_init(&attr);
-	pthread_attr_setstacksize(&attr, 1500000);
-
-	pthread_create(&m_process_thread, &attr, process_events, this);
-	m_thread_exists = true;
-}
-
-
-/** Stop the process thread.
- */
-void
-PostProcessor::stop()
+: _events(queue_size)
 {
-	if (m_thread_exists) {
-		m_process_thread_exit_flag = true;
-		pthread_cancel(m_process_thread);
-		pthread_join(m_process_thread, NULL);
-		m_thread_exists = false;
-	}
+	set_name("PostProcessor");
 }
 
 
-/** Signal the PostProcessor to process all pending events.
+/** Post processing thread.
+ *
+ * Infinite loop that waits on the semaphore and processes every enqueued
+ * event (to be signalled at the end of every process cycle).
  */
 void
-PostProcessor::signal()
+PostProcessor::_signalled()
 {
-	m_semaphore.post();
-}
-
-
-void*
-PostProcessor::process_events(void* osc_processer)
-{
-	PostProcessor* me = (PostProcessor*)osc_processer;
-	return me->m_process_events();
-}
-
-
-/** OSC message processing thread.
- */
-void*
-PostProcessor::m_process_events()
-{
-	Event* ev = NULL;
-	
-	while (true) {
-		m_semaphore.wait();
-		
-		if (m_process_thread_exit_flag)
-			break;
-		
-		while (!m_events.is_empty()) {
-			ev = m_events.pop();
-			assert(ev != NULL);
-			ev->post_process();
-			om->maid()->push(ev);
-		}
+	while ( ! _events.is_empty()) {
+		Event* const ev = _events.pop();
+		assert(ev);
+		ev->post_process();
+		om->maid()->push(ev);
 	}
-	
-	cout << "[PostProcessor] Exiting post processor thread." << endl;
-
-	return NULL;
 }
 
 } // namespace Om
-- 
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