sharedblob.h File Reference

#include <stddef.h>

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Functions
void *	IDSharedBlobAlloc (size_t size)
	Allocate a buffer suitable for fast exchange over local links. Warning : the buffer will be sealed (readonly) once exchanged.
void *	IDSharedBlobAttach (int fd, size_t size)
void	IDSharedBlobFree (void *ptr)
	Free a buffer allocated using IDSharedBlobAlloc. Fall back to free for buffer that are not shared blob Must be used for IBLOB.data.
void	IDSharedBlobDettach (void *ptr)
	Dettach a blob, but don't close its FD.
void *	IDSharedBlobRealloc (void *ptr, size_t size)
	Adjust the size of a buffer obtained using IDSharedBlobAlloc.
int	IDSharedBlobGetFd (void *ptr)
	Return the filedescriptor backing up the given shared buffer.
void	IDSharedBlobSeal (void *ptr)
	Seal (make readonly) a buffer allocated using IDSharedBlobAlloc. This is automatic when IDNewBlob.

Function Documentation

IDSharedBlobAlloc()

void * IDSharedBlobAlloc ( size_t  size )

extern

Allocate a buffer suitable for fast exchange over local links. Warning : the buffer will be sealed (readonly) once exchanged.

Parameters

size_t

size of the memory area to allocate

Definition at line 73 of file sharedblob.c.

IDSharedBlobAttach()

void * IDSharedBlobAttach ( int  fd, size_t  size  )

extern

Attach to a received shared buffer by ID The returned buffer cannot be realloced or sealed.

Returns

null on error + errno (invalid fd / system resources)

Definition at line 109 of file sharedblob.c.

IDSharedBlobDettach()

void IDSharedBlobDettach ( void *  ptr )

extern

Dettach a blob, but don't close its FD.

Definition at line 165 of file sharedblob.c.

IDSharedBlobFree()

void IDSharedBlobFree ( void *  ptr )

extern

Free a buffer allocated using IDSharedBlobAlloc. Fall back to free for buffer that are not shared blob Must be used for IBLOB.data.

Definition at line 139 of file sharedblob.c.

IDSharedBlobGetFd()

int IDSharedBlobGetFd ( void *  ptr )

extern

Return the filedescriptor backing up the given shared buffer.

Returns

the filedescriptor or -1 if not a shared buffer pointer

Definition at line 265 of file sharedblob.c.

IDSharedBlobRealloc()

void * IDSharedBlobRealloc ( void *  ptr, size_t  size  )

extern

Adjust the size of a buffer obtained using IDSharedBlobAlloc.

Parameters

size_t

size of the memory area to allocate

Definition at line 186 of file sharedblob.c.

IDSharedBlobSeal()

void IDSharedBlobSeal ( void *  ptr )

extern

Seal (make readonly) a buffer allocated using IDSharedBlobAlloc. This is automatic when IDNewBlob.

Parameters

size_t

size of the memory area to allocate

Definition at line 281 of file sharedblob.c.