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/*
* execipc.h --
* parallel executor inter-process communication definitions.
*
* Identification:
* /usr/local/devel/postgres-v4r2/src/backend/storage/RCS/execipc.h,v 1.2 1991/11/09 09:53:48 hong Exp
*/
#ifndef EXECIPCIncluded /* Include this file only once */
#define EXECIPCIncluded 1
/* ----------------------------
* struct for locks that support one producer and multiple consumer
* ----------------------------
*/
struct m1lock {
int count;
#ifdef HAS_TEST_AND_SET
slock_t waitlock;
#endif
};
typedef struct m1lock M1Lock;
/* ----------------------------
* struct for shared counter: need mutual exclusion
* ----------------------------
*/
struct sharedcounter {
int count;
#ifdef HAS_TEST_AND_SET
slock_t exlock;
#endif
};
typedef struct sharedcounter SharedCounter;
void SetParallelExecutorEnabled();
void SetNumberSlaveBackends();
void ExecImmediateReleaseSemaphore();
void Exec_I();
void Exec_P();
void Exec_V();
void I_Start();
void P_Start();
void V_Start();
void I_Finished();
void V_Finished();
void P_Finished();
void P_FinishedAbort();
void V_FinishedAbort();
void I_SharedMemoryMutex();
void P_SharedMemoryMutex();
void V_SharedMemoryMutex();
void I_Abort();
void P_Abort();
void V_Abort();
void ExecInitExecutorSemaphore();
void ExecSemaphoreOnExit();
void ExecCreateExecutorSharedMemory();
void ExecSharedMemoryOnExit();
void ExecLocateExecutorSharedMemory();
void ExecAttachExecutorSharedMemory();
void InitMWaitOneLock();
void MWaitOne();
void OneSignalM();
#endif /* !defined(EXECIPCIncluded) */
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