From 99cb921b2c04b177a54aa764a993594a653ef8f2 Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Mon, 13 Apr 2020 17:35:37 +0200
Subject: [PATCH] Make VST use the RTSemaphore from sfizz

---
 vst/RTSemaphore.h       | 167 ----------------------------------------
 vst/SfizzVstProcessor.h |   2 +-
 2 files changed, 1 insertion(+), 168 deletions(-)
 delete mode 100644 vst/RTSemaphore.h

diff --git a/vst/RTSemaphore.h b/vst/RTSemaphore.h
deleted file mode 100644
index 5ec3c765..00000000
--- a/vst/RTSemaphore.h
+++ /dev/null
@@ -1,167 +0,0 @@
-//          Copyright Jean Pierre Cimalando 2018-2020.
-// Distributed under the Boost Software License, Version 1.0.
-//    (See accompanying file LICENSE or copy at
-//          http://www.boost.org/LICENSE_1_0.txt)
-
-#pragma once
-#if defined(__APPLE__)
-#include <mach/mach.h>
-#elif defined(_WIN32)
-#include <limits.h>
-#include <windows.h>
-#else
-#include <semaphore.h>
-#include <errno.h>
-#endif
-#include <stdexcept>
-
-class RTSemaphore {
-public:
-    explicit RTSemaphore(unsigned value = 0);
-    ~RTSemaphore();
-
-    RTSemaphore(const RTSemaphore &) = delete;
-    RTSemaphore &operator=(const RTSemaphore &) = delete;
-
-    void post();
-    void wait();
-    bool try_wait();
-
-private:
-#if defined(__APPLE__)
-    semaphore_t sem_;
-#elif defined(_WIN32)
-    HANDLE sem_;
-#else
-    sem_t sem_;
-#endif
-};
-
-#if defined(__APPLE__)
-inline RTSemaphore::RTSemaphore(unsigned value)
-{
-    if (semaphore_create(mach_task_self(), &sem_, SYNC_POLICY_FIFO, value) != 0)
-        throw std::runtime_error("RTSemaphore::RTSemaphore");
-}
-
-inline RTSemaphore::~RTSemaphore()
-{
-    semaphore_destroy(mach_task_self(), sem_);
-}
-
-inline void RTSemaphore::post()
-{
-    if (semaphore_signal(sem_) != KERN_SUCCESS)
-        throw std::runtime_error("RTSemaphore::post");
-}
-
-inline void RTSemaphore::wait()
-{
-    do {
-        switch (semaphore_wait(sem_)) {
-        case KERN_SUCCESS:
-            return;
-        case KERN_ABORTED:
-            break;
-        default:
-            throw std::runtime_error("RTSemaphore::wait");
-        }
-    } while (1);
-}
-
-inline bool RTSemaphore::try_wait()
-{
-    do {
-        const mach_timespec_t timeout = {0, 0};
-        switch (semaphore_timedwait(sem_, timeout)) {
-        case KERN_SUCCESS:
-            return true;
-        case KERN_OPERATION_TIMED_OUT:
-            return false;
-        case KERN_ABORTED:
-            break;
-        default:
-            throw std::runtime_error("RTSemaphore::try_wait");
-        }
-    } while (1);
-}
-#elif defined(_WIN32)
-inline RTSemaphore::RTSemaphore(unsigned value)
-{
-    sem_ = CreateSemaphore(nullptr, value, LONG_MAX, nullptr);
-    if (!sem_)
-        throw std::runtime_error("RTSemaphore::RTSemaphore");
-}
-
-inline RTSemaphore::~RTSemaphore()
-{
-    CloseHandle(sem_);
-}
-
-inline void RTSemaphore::post()
-{
-    if (!ReleaseSemaphore(sem_, 1, nullptr))
-        throw std::runtime_error("RTSemaphore::post");
-}
-
-inline void RTSemaphore::wait()
-{
-    if (WaitForSingleObject(sem_, INFINITE) != WAIT_OBJECT_0)
-        throw std::runtime_error("RTSemaphore::wait");
-}
-
-inline bool RTSemaphore::try_wait()
-{
-    switch (WaitForSingleObject(sem_, 0)) {
-    case WAIT_OBJECT_0:
-        return true;
-    case WAIT_TIMEOUT:
-        return false;
-    default:
-        throw std::runtime_error("RTSemaphore::try_wait");
-    }
-}
-#else
-inline RTSemaphore::RTSemaphore(unsigned value)
-{
-    if (sem_init(&sem_, 0, value) != 0)
-        throw std::runtime_error("RTSemaphore::RTSemaphore");
-}
-
-inline RTSemaphore::~RTSemaphore()
-{
-    sem_destroy(&sem_);
-}
-
-inline void RTSemaphore::post()
-{
-    while (sem_post(&sem_) != 0) {
-        if (errno != EINTR)
-            throw std::runtime_error("RTSemaphore::post");
-    }
-}
-
-inline void RTSemaphore::wait()
-{
-    while (sem_wait(&sem_) != 0) {
-        if (errno != EINTR)
-            throw std::runtime_error("RTSemaphore::wait");
-    }
-}
-
-inline bool RTSemaphore::try_wait()
-{
-    do {
-        if (sem_trywait(&sem_) == 0)
-            return true;
-        switch (errno) {
-        case EINTR:
-            break;
-        case EAGAIN:
-            return false;
-        default:
-            throw std::runtime_error("RTSemaphore::try_wait");
-        }
-    } while (1);
-}
-#endif
diff --git a/vst/SfizzVstProcessor.h b/vst/SfizzVstProcessor.h
index 1ac71827..1ed7fb37 100644
--- a/vst/SfizzVstProcessor.h
+++ b/vst/SfizzVstProcessor.h
@@ -6,7 +6,7 @@
 
 #pragma once
 #include "SfizzVstState.h"
-#include "RTSemaphore.h"
+#include "sfizz/RTSemaphore.h"
 #include "ring_buffer/ring_buffer.h"
 #include "public.sdk/source/vst/vstaudioeffect.h"
 #include <sfizz.hpp>