void *
magick_realloc(void *ptr, const size_t size)
{
void *v;
v = ResizeMagickMemory(ptr, size);
if (!v)
{
rb_raise(rb_eNoMemError, "not enough memory to continue");
}
return v;
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e s i z e Q u a n t u m M e m o r y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ResizeQuantumMemory() changes the size of the memory and returns a pointer
% to the (possibly moved) block. The contents will be unchanged up to the
% lesser of the new and old sizes.
%
% The format of the ResizeQuantumMemory method is:
%
% void *ResizeQuantumMemory(void *memory,const size_t count,
% const size_t quantum)
%
% A description of each parameter follows:
%
% o memory: A pointer to a memory allocation.
%
% o count: the number of quantum elements to allocate.
%
% o quantum: the number of bytes in each quantum.
%
*/
MagickExport void *ResizeQuantumMemory(void *memory,const size_t count,
const size_t quantum)
{
size_t
extent;
if (CheckMemoryOverflow(count,quantum) != MagickFalse)
{
memory=RelinquishMagickMemory(memory);
return((void *) NULL);
}
extent=count*quantum;
return(ResizeMagickMemory(memory,extent));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e s i z e Q u a n t u m M e m o r y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ResizeQuantumMemory() changes the size of the memory and returns a pointer
% to the (possibly moved) block. The contents will be unchanged up to the
% lesser of the new and old sizes.
%
% The format of the ResizeQuantumMemory method is:
%
% void *ResizeQuantumMemory(void *memory,const size_t count,
% const size_t quantum)
%
% A description of each parameter follows:
%
% o memory: A pointer to a memory allocation.
%
% o count: the number of quantum elements to allocate.
%
% o quantum: the number of bytes in each quantum.
%
*/
MagickExport void *ResizeQuantumMemory(void *memory,const size_t count,
const size_t quantum)
{
size_t
size;
size=count*quantum;
if ((count == 0) || (quantum != (size/count)))
{
memory=RelinquishMagickMemory(memory);
errno=ENOMEM;
return((void *) NULL);
}
return(ResizeMagickMemory(memory,size));
}
