System Memory Manager Kernel

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Detailed Description

This module contains routines to manage heaps of memory.

Data Structures
struct	_PspSysmemPartitionInfo
struct	_uidControlBlock
	Structure of a UID control block. More...
Typedefs
typedef _PspSysmemPartitionInfo	PspSysmemPartitionInfo
typedef _uidControlBlock	uidControlBlock
Functions
int	sceKernelQueryMemoryPartitionInfo (int pid, PspSysmemPartitionInfo *info)
	Query the parition information.
SceSize	sceKernelPartitionTotalFreeMemSize (int pid)
	Get the total amount of free memory.
SceSize	sceKernelPartitionMaxFreeMemSize (int pid)
	Get the size of the largest free memory block.
void	sceKernelSysMemDump (void)
	Get the kernel to dump the internal memory table to Kprintf.
void	sceKernelSysMemDumpBlock (void)
	Dump the list of memory blocks.
void	sceKernelSysMemDumpTail (void)
	Dump the tail blocks.
int	sceKernelSetDdrMemoryProtection (void *addr, int size, int prot)
	Set the protection of a block of ddr memory.
SceUID	sceKernelCreateHeap (SceUID partitionid, SceSize size, int unk, const char *name)
	Create a heap.
void *	sceKernelAllocHeapMemory (SceUID heapid, SceSize size)
	Allocate a memory block from a heap.
int	sceKernelFreeHeapMemory (SceUID heapid, void *block)
	Free a memory block allocated from a heap.
int	sceKernelDeleteHeap (SceUID heapid)
	Delete a heap.
SceSize	sceKernelHeapTotalFreeSize (SceUID heapid)
	Get the amount of free size of a heap, in bytes.
int	sceKernelGetUIDcontrolBlock (SceUID uid, uidControlBlock **block)
	Get a UID control block.
int	sceKernelGetUIDcontrolBlockWithType (SceUID uid, uidControlBlock *type, uidControlBlock **block)
	Get a UID control block on a particular type.
uidControlBlock *	SysMemForKernel_536AD5E1 (void)
	Get the root of the UID tree (1.5+ only).
int	sceKernelDeleteUID (SceUID uid)
	Delete a UID.
Variables
_uidControlBlock	packed
	Structure of a UID control block.

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Typedef Documentation

typedef struct _PspSysmemPartitionInfo PspSysmemPartitionInfo

typedef struct _uidControlBlock uidControlBlock

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Function Documentation

void* sceKernelAllocHeapMemory	(	SceUID	heapid,
		SceSize	size
	)

Allocate a memory block from a heap.

Parameters:

	heapid	- The UID of the heap to allocate from.
	size	- The number of bytes to allocate.

Returns:

The address of the allocated memory block, or NULL on error.

SceUID sceKernelCreateHeap	(	SceUID	partitionid,
		SceSize	size,
		int	unk,
		const char *	name
	)

Create a heap.

Parameters:

	partitionid	- The UID of the partition where allocate the heap.
	size	- The size in bytes of the heap.
	unk	- Unknown, probably some flag or type, pass 1.
	name	- Name assigned to the new heap.

Returns:

The UID of the new heap, or if less than 0 an error.

int sceKernelDeleteHeap

(

SceUID

heapid

)

Delete a heap.

Parameters:

heapid

- The UID of the heap to delete.

Returns:

0 on success, < 0 on error.

int sceKernelDeleteUID

(

SceUID

uid

)

Delete a UID.

Parameters:

uid

- The UID to delete

Returns:

0 on success

int sceKernelFreeHeapMemory	(	SceUID	heapid,
		void *	block
	)

Free a memory block allocated from a heap.

Parameters:

	heapid	- The UID of the heap where block belongs.
	block	- The block of memory to free from the heap.

Returns:

0 on success, < 0 on error.

int sceKernelGetUIDcontrolBlock	(	SceUID	uid,
		uidControlBlock **	block
	)

Get a UID control block.

Parameters:

	uid	- The UID to find
	block	- Pointer to hold the pointer to the block

Returns:

0 on success

int sceKernelGetUIDcontrolBlockWithType	(	SceUID	uid,
		uidControlBlock *	type,
		uidControlBlock **	block
	)

Get a UID control block on a particular type.

Parameters:

	uid	- The UID to find
	type	- Pointer to the type UID block
	block	- Pointer to hold the pointer to the block

Returns:

0 on success

SceSize sceKernelHeapTotalFreeSize

(

SceUID

heapid

)

Get the amount of free size of a heap, in bytes.

Parameters:

heapid

- The UID of the heap

Returns:

the free size of the heap, in bytes. < 0 on error.

SceSize sceKernelPartitionMaxFreeMemSize

(

int

pid

)

Get the size of the largest free memory block.

Parameters:

pid

- The partition id

Returns:

The size of the largest free memory block, in bytes.

SceSize sceKernelPartitionTotalFreeMemSize

(

int

pid

)

Get the total amount of free memory.

Parameters:

pid

- The partition id

Returns:

The total amount of free memory, in bytes.

int sceKernelQueryMemoryPartitionInfo	(	int	pid,
		PspSysmemPartitionInfo *	info
	)

Query the parition information.

Parameters:

	pid	- The partition id
	info	- Pointer to the PspSysmemPartitionInfo structure

Returns:

0 on success.

int sceKernelSetDdrMemoryProtection	(	void *	addr,
		int	size,
		int	prot
	)

Set the protection of a block of ddr memory.

Parameters:

	addr	- Address to set protection on
	size	- Size of block
	prot	- Protection bitmask

Returns:

< 0 on error

void sceKernelSysMemDump

(

void

)

Get the kernel to dump the internal memory table to Kprintf.

void sceKernelSysMemDumpBlock

(

void

)

Dump the list of memory blocks.

void sceKernelSysMemDumpTail

(

void

)

Dump the tail blocks.

uidControlBlock* SysMemForKernel_536AD5E1

(

void

)

Get the root of the UID tree (1.5+ only).

Returns:

Pointer to the UID tree root

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Variable Documentation

struct _uidControlBlock packed

Structure of a UID control block.

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