ssp_smem.c

abstract rtos

#include "syscfg.h"

#ifdef __cplusplus
extern "C"{
#endif 


#include "sys/sys_pub.h"
#include "aos.h"




#include "ssp_smem.h"





STA_MEM_S *g_pstStaMemList;
U32        g_ulTotalStaMemSize;

U32 m_smem_init( )
{
    g_pstStaMemList = NULL;
    g_ulTotalStaMemSize = 0;
    
    return AOS_SUCC;
}

VOID * aos_smem_alloc( MPE mpe, U32 sid, U32 ulSize )
{
    STA_MEM_S *pNewMem;
    U32 lockKey;

    if( 0 == ulSize )
    {
        return NULL;
    }
    
    if( ulSize & 0xF )
    {
        ulSize >>= 4;
        ulSize++;
        ulSize <<= 4;
    }

    lockKey = aos_int_lock();
    pNewMem =  (STA_MEM_S *)mem_buf_fix( ulSize + sizeof( STA_MEM_S) );
    if( NULL == pNewMem )
    {
        aos_int_unlock(lockKey);
        aos_printf( MPE_SYS, "allocate static memory fail,mpe=%d,size=%d\r\n",mpe,ulSize  );
        return NULL;
    }
    pNewMem->magic_number = RED_MAGIC1;
    pNewMem->mpe = mpe;
    pNewMem->sid = sid;
    pNewMem->tick= aos_tick_get();
    pNewMem->len = ulSize;
    
    *(U32*)(&pNewMem->s_mem[ulSize]) = RED_MAGIC3; 
    	
    
    pNewMem->next = g_pstStaMemList;
    g_pstStaMemList = pNewMem;
    g_ulTotalStaMemSize+=ulSize;
    aos_int_unlock(lockKey);
    
    return (VOID*)pNewMem->s_mem;
}



#ifdef __cplusplus
}
#endif