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Make VST use the RTSemaphore from sfizz

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This commit is contained in:
Jean Pierre Cimalando 2020-04-13 17:35:37 +02:00
parent 54b92f9f9d
commit 99cb921b2c
2 changed files with 1 additions and 168 deletions
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167
vst/RTSemaphore.h
View file

@ -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

2
vst/SfizzVstProcessor.h
View file

@ -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>