From 7256bc92fa954b6ff313f30694a27b7f47c1589d Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Wed, 31 Jan 2018 20:21:54 -0800
Subject: Add a thread to marshal events from the mixer
To avoid having unknown user code running in the mixer thread that could
significantly delay the mixed output, a lockless ringbuffer is used for the
mixer to provide events that a secondary thread will pop off and process.
---
OpenAL32/Include/alMain.h | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
(limited to 'OpenAL32/Include/alMain.h')
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 6ad67b7b..e7a95eef 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -158,6 +158,7 @@ static const union {
extern "C" {
#endif
+struct ll_ringbuffer;
struct Hrtf;
struct HrtfEntry;
struct DirectHrtfState;
@@ -613,6 +614,14 @@ enum {
EventType_Deprecated = 1<<4,
};
+typedef struct AsyncEvent {
+ unsigned int EnumType;
+ ALenum Type;
+ ALuint ObjectId;
+ ALuint Param;
+ ALchar Message[1008];
+} AsyncEvent;
+
struct ALCcontext_struct {
RefCount ref;
@@ -664,8 +673,12 @@ struct ALCcontext_struct {
ATOMIC(struct ALeffectslotArray*) ActiveAuxSlots;
- almtx_t EventCbLock;
+ almtx_t EventThrdLock;
+ althrd_t EventThread;
+ alcnd_t EventCnd;
+ struct ll_ringbuffer *AsyncEvents;
ATOMIC(ALbitfieldSOFT) EnabledEvts;
+ almtx_t EventCbLock;
ALEVENTPROCSOFT EventCb;
void *EventParam;
--
cgit v1.2.3