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ref_mem
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Reference memory object state.
ER ref_mem (VP base, T_RMEM *pk_rmem);
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VP base;
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Memory object start address.
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T_RMEM *pk_rmem;
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Pointer to the packet returning the mutex state.
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[Access permission vector : ACVCT]
typedef struct acvct {
ACPTN acptn1; /*Access permission pattern for operand-read*/
ACPTN acptn2; /*Access permission pattern for operand-write*/
ACPTN acptn3; /*Access permission pattern for execution*/
} ACVCT;
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[Memory object state packet: T_RMEM]
typedef struct t_rmem {
ACVCT acvct; /*Access permission vector*/
} T_RMEM;
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This service call stores the information of the memory object started from the address specified by parameter
base into the area specified by parameter
pk_rmem.
The bit N-1 in the access permission pattern shows whether tasks belonging to the domain ID #N can access the memory object. The bit value 1 means "permitted" and 0 means "not permitted".
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- This service call was issued in the CPU locked state.
- This service call was issued from non-task.
- This service call was issued in the status "PSW.IPL > kernel interrupt mask level".
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- Stack pointer points out of user stack for invoking task.
- The operand-write access to the area indicated by pk_rmem has not been permitted to the invoking task
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- The memory object started from the address specified by base has already been registered.
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