我在编译文件 Mutex.h 时遇到问题 -> 它属于库 STK（Synthesis Toolkit C++）。
我刚刚包含了我需要的文件（“RtWvOut.h”、Mutex.h/cpp、Stk.h/cpp、WvOut.h），并且在编译过程中以下问题消失了。感谢您的回答:)
d:\kari\Mutex.h:67: 错误:C2146: 语法错误: 缺少';' 在标识符 'mutex_' d:\kari\Mutex.h:67 之前：错误：C4430：缺少类型说明符 - 假定为 int。注意：C++ 不支持默认整数 d:\kari\Mutex.h:68: Error:C2146: syntax error: missing ';' 在标识符 'condition_' d:\kari\Mutex.h:68 之前：错误：C4430：缺少类型说明符 - 假定为 int。注意：C++ 不支持默认整数
这是 Mutex.h 的代码
#ifndef STK_MUTEX_H
#define STK_MUTEX_H
#include "Stk.h"
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__)){
#include <pthread.h>
typedef pthread_mutex_t MUTEX;
typedef pthread_cond_t CONDITION;
}
#elif defined(__OS_WINDOWS__){
#include <windows.h>
#include <process.h>
typedef CRITICAL_SECTION MUTEX;
typedef HANDLE CONDITION;
}
#endif
namespace stk {
/**************************************************/
/*! \class Mutex
\brief STK mutex class.
This class provides a uniform interface for
cross-platform mutex use. On Linux and IRIX
systems, the pthread library is used. Under
Windows, critical sections are used.
by Perry R. Cook and Gary P. Scavone, 1995-2011.
*/
/***************************************************/
class Mutex : public Stk
{
public:
//! Default constructor.
Mutex();
//! Class destructor.
~Mutex();
//! Lock the mutex.
void lock(void);
//! Unlock the mutex.
void unlock(void);
//! Wait indefinitely on the mutex condition variable.
/*!
The mutex must be locked before calling this function, and then
subsequently unlocked after this function returns.
*/
void wait(void);
//! Signal the condition variable.
/*!
The mutex must be locked before calling this function, and then
subsequently unlocked after this function returns.
*/
void signal(void);
protected:
MUTEX mutex_; ##################x LINE 67
CONDITION condition_; ################## LINE 68
};
} // stk namespace
#endif
和 Mutex.cpp 的代码
/***************************************************/
/*! \class Mutex
\brief STK mutex class.
This class provides a uniform interface for
cross-platform mutex use. On Linux and IRIX
systems, the pthread library is used. Under
Windows, critical sections are used.
by Perry R. Cook and Gary P. Scavone, 1995-2011.
*/
/***************************************************/
#include "Mutex.h"
namespace stk {
Mutex :: Mutex()
{
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
pthread_mutex_init(&mutex_, NULL);
pthread_cond_init(&condition_, NULL);
#elif defined(__OS_WINDOWS__)
InitializeCriticalSection(&mutex_);
condition_ = CreateEvent(NULL, // no security
true, // manual-reset
false, // non-signaled initially
NULL); // unnamed
#endif
}
Mutex :: ~Mutex()
{
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
pthread_mutex_destroy(&mutex_);
pthread_cond_destroy(&condition_);
#elif defined(__OS_WINDOWS__)
DeleteCriticalSection(&mutex_);
CloseHandle( condition_ );
#endif
}
void Mutex :: lock()
{
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
pthread_mutex_lock(&mutex_);
#elif defined(__OS_WINDOWS__)
EnterCriticalSection(&mutex_);
#endif
}
void Mutex :: unlock()
{
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
pthread_mutex_unlock(&mutex_);
#elif defined(__OS_WINDOWS__)
LeaveCriticalSection(&mutex_);
#endif
}
void Mutex :: wait()
{
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
pthread_cond_wait(&condition_, &mutex_);
#elif defined(__OS_WINDOWS__)
WaitForMultipleObjects(1, &condition_, false, INFINITE);
#endif
}
void Mutex :: signal()
{
#if (defined(__OS_IRIX__) || defined(__OS_LINUX__) || defined(__OS_MACOSX__))
pthread_cond_signal(&condition_);
#elif defined(__OS_WINDOWS__)
SetEvent( condition_ );
#endif
}
} // stk namespace
和代码，Mutex.h 包括在哪里：(RtWvOut.h)
#ifndef STK_RTWVOUT_H
#define STK_RTWVOUT_H
#include "WvOut.h"
#include "RtAudio.h"
#include "Mutex.h"
namespace stk {
/***************************************************/
/*! \class RtWvOut
\brief STK realtime audio (blocking) output class.
This class provides a simplified interface to RtAudio for realtime
audio output. It is a subclass of WvOut. This class makes use of
RtAudio's callback functionality by creating a large ring-buffer
into which data is written. This class should not be used when
low-latency is desired.
RtWvOut supports multi-channel data in interleaved format. It is
important to distinguish the tick() method that outputs a single
sample to all channels in a sample frame from the overloaded one
that takes a reference to an StkFrames object for multi-channel
and/or multi-frame data.
by Perry R. Cook and Gary P. Scavone, 1995-2011.
*/
/***************************************************/
class RtWvOut : public WvOut
{
public:
//! Default constructor.
/*!
The default \e device argument value (zero) will select the
default output device on your system. The first device enumerated
by the underlying audio API is specified with a value of one. The
default buffer size of RT_BUFFER_SIZE is defined in Stk.h. An
StkError will be thrown if an error occurs duing instantiation.
*/
RtWvOut( unsigned int nChannels = 1, StkFloat sampleRate = Stk::sampleRate(),
int device = 0, int bufferFrames = RT_BUFFER_SIZE, int nBuffers = 20 );
//! Class destructor.
~RtWvOut();
//! Start the audio output stream.
/*!
The stream is started automatically, if necessary, when a
tick() method is called.
*/
void start( void );
//! Stop the audio output stream.
/*!
It may be necessary to use this method to avoid undesireable
audio buffer cycling if you wish to temporarily stop audio output.
*/
void stop( void );
//! Output a single sample to all channels in a sample frame.
/*!
If the device is "stopped", it is "started".
*/
void tick( const StkFloat sample );
//! Output the StkFrames data.
/*!
If the device is "stopped", it is "started". The number of
channels in the StkFrames argument must equal the number of
channels specified during instantiation. However, this is only
checked if _STK_DEBUG_ is defined during compilation, in which
case an incompatibility will trigger an StkError exception.
*/
void tick( const StkFrames& frames );
// This function is not intended for general use but must be
// public for access from the audio callback function.
int readBuffer( void *buffer, unsigned int frameCount );
protected:
RtAudio dac_;
Mutex mutex_;
bool stopped_;
unsigned int readIndex_;
unsigned int writeIndex_;
long framesFilled_;
unsigned int status_; // running = 0, emptying buffer = 1, finished = 2
};
} // stk namespace
#endif