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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*++
Module Name:
include/pal/synchobjects.hpp
Abstract:
Header file for synchronization manager and controllers
--*/
#ifndef _SINCHOBJECTS_HPP_
#define _SINCHOBJECTS_HPP_
#include "corunix.hpp"
#include "threadinfo.hpp"
#include "shm.hpp"
#include "list.h"
#include <pthread.h>
#define SharedID SHMPTR
#define SharedPoolId ULONG_PTR
#define DefaultSharedPool ((ULONG_PTR)0)
#define NULLSharedID ((SHMPTR)NULL)
#define SharedIDToPointer(shID) SHMPTR_TO_TYPED_PTR(PVOID, shID)
#define SharedIDToTypePointer(TYPE,shID) SHMPTR_TO_TYPED_PTR(TYPE, shID)
#define RawSharedObjectAlloc(szSize, shPoolId) SHMalloc(szSize)
#define RawSharedObjectFree(shID) SHMfree(shID)
namespace CorUnix
{
DWORD InternalWaitForMultipleObjectsEx(
CPalThread * pthrCurrent,
DWORD nCount,
CONST HANDLE *lpHandles,
BOOL bWaitAll,
DWORD dwMilliseconds,
BOOL bAlertable);
PAL_ERROR InternalSleepEx(
CPalThread * pthrCurrent,
DWORD dwMilliseconds,
BOOL bAlertable);
enum THREAD_STATE
{
TS_IDLE,
TS_STARTING,
TS_RUNNING,
TS_FAILED,
TS_DONE,
};
// forward declarations
struct _ThreadWaitInfo;
struct _WaitingThreadsListNode;
class CSynchData;
typedef struct _WaitingThreadsListNode * PWaitingThreadsListNode;
typedef struct _OwnedObjectsListNode * POwnedObjectsListNode;
typedef struct _ThreadApcInfoNode * PThreadApcInfoNode;
typedef struct _ThreadWaitInfo
{
WaitType wtWaitType;
WaitDomain wdWaitDomain;
LONG lObjCount;
LONG lSharedObjCount;
CPalThread * pthrOwner;
PWaitingThreadsListNode rgpWTLNodes[MAXIMUM_WAIT_OBJECTS];
_ThreadWaitInfo() : wtWaitType(SingleObject), wdWaitDomain(LocalWait),
lObjCount(0), lSharedObjCount(0),
pthrOwner(NULL) {}
} ThreadWaitInfo;
typedef struct _ThreadNativeWaitData
{
#if !SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
pthread_mutex_t mutex;
pthread_cond_t cond;
int iPred;
#else // SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
int iPipeRd;
int iPipeWr;
#endif // SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
DWORD dwObjectIndex;
ThreadWakeupReason twrWakeupReason;
bool fInitialized;
_ThreadNativeWaitData() :
#if !SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
iPred(0),
#else // SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
iPipeRd(-1),
iPipeWr(-1),
#endif // SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
dwObjectIndex(0),
twrWakeupReason(WaitSucceeded),
fInitialized(false)
{
}
~_ThreadNativeWaitData();
} ThreadNativeWaitData;
class CThreadSynchronizationInfo : public CThreadInfoInitializer
{
friend class CPalSynchronizationManager;
friend class CSynchWaitController;
THREAD_STATE m_tsThreadState;
SharedID m_shridWaitAwakened;
Volatile<LONG> m_lLocalSynchLockCount;
Volatile<LONG> m_lSharedSynchLockCount;
LIST_ENTRY m_leOwnedObjsList;
ThreadNativeWaitData m_tnwdNativeData;
ThreadWaitInfo m_twiWaitInfo;
#ifdef SYNCHMGR_SUSPENSION_SAFE_CONDITION_SIGNALING
static const int PendingSignalingsArraySize = 10;
LONG m_lPendingSignalingCount;
CPalThread * m_rgpthrPendingSignalings[PendingSignalingsArraySize];
LIST_ENTRY m_lePendingSignalingsOverflowList;
#endif // SYNCHMGR_SUSPENSION_SAFE_CONDITION_SIGNALING
public:
CThreadSynchronizationInfo();
virtual ~CThreadSynchronizationInfo();
//
// CThreadInfoInitializer methods
//
virtual PAL_ERROR InitializePreCreate(void);
virtual PAL_ERROR InitializePostCreate(
CPalThread *pthrCurrent,
SIZE_T threadId,
DWORD dwLwpId
);
THREAD_STATE GetThreadState(void)
{
return m_tsThreadState;
};
void SetThreadState(THREAD_STATE tsThreadState)
{
m_tsThreadState = tsThreadState;
};
ThreadNativeWaitData * GetNativeData()
{
return &m_tnwdNativeData;
}
#if SYNCHMGR_SUSPENSION_SAFE_CONDITION_SIGNALING && !SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
PAL_ERROR RunDeferredThreadConditionSignalings();
#endif // SYNCHMGR_SUSPENSION_SAFE_CONDITION_SIGNALING && !SYNCHMGR_PIPE_BASED_THREAD_BLOCKING
// NOTE: the following methods provide non-synchronized access to
// the list of owned objects for this thread. Any thread
// accessing this list MUST own the appropriate
// synchronization lock(s).
void AddObjectToOwnedList(POwnedObjectsListNode pooln);
void RemoveObjectFromOwnedList(POwnedObjectsListNode pooln);
POwnedObjectsListNode RemoveFirstObjectFromOwnedList(void);
// The following methods provide access to the native wait lock for
// those implementations that need a lock to protect the support for
// native thread blocking (e.g.: pthread conditions)
void AcquireNativeWaitLock(void);
void ReleaseNativeWaitLock(void);
bool TryAcquireNativeWaitLock(void);
};
class CThreadApcInfo : public CThreadInfoInitializer
{
friend class CPalSynchronizationManager;
PThreadApcInfoNode m_ptainHead;
PThreadApcInfoNode m_ptainTail;
public:
CThreadApcInfo() :
m_ptainHead(NULL),
m_ptainTail(NULL)
{
}
};
class CPalSynchMgrController
{
public:
static IPalSynchronizationManager * CreatePalSynchronizationManager();
static PAL_ERROR StartWorker(CPalThread * pthrCurrent);
static PAL_ERROR PrepareForShutdown(void);
static PAL_ERROR Shutdown(CPalThread *pthrCurrent, bool fFullCleanup);
};
}
#endif // _SINCHOBJECTS_HPP_
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