vm_thread.h

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

/*
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//       Copyright(c) 2003-2005 Intel Corporation. All Rights Reserved.
//
*/

#ifndef __VM_THREAD_H__
#define __VM_THREAD_H__

#include "vm_types.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/* IMPORTANT:
 *    The thread return value is always saved for the calling thread to
 *    collect. To avoid memory leak, always vm_thread_wait() for the
 *    child thread to terminate in the calling thread.
 */

typedef unsigned int (* vm_thread_callback)(void *);

typedef enum
{
    VM_THREAD_PRIORITY_HIGHEST,
    VM_THREAD_PRIORITY_HIGH,
    VM_THREAD_PRIORITY_NORMAL,
    VM_THREAD_PRIORITY_LOW,
    VM_THREAD_PRIORITY_LOWEST

} vm_thread_priority;

/* Set the thread handler to an invalid value */
void vm_thread_set_invalid(vm_thread *thread);

/* Verify if the thread handler is valid */
int vm_thread_is_valid(vm_thread *thread);

/* Create a thread. The thread is set to run at the call.
   Return 1 if successful */
int vm_thread_create(vm_thread *thread, vm_thread_callback func, void *arg);

/* Wait until a thread exists */
void vm_thread_wait(vm_thread *thread);

/* Set thread priority. Return 1 if successful */
int  vm_thread_set_priority(vm_thread *thread, vm_thread_priority priority);

/* Close thread after all */
void vm_thread_close(vm_thread *thread);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* __VM_THREAD_H__ */