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res_lea.c
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res_lea.c
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/* resources */
#include <assert.h>
#include "parrot/parrot.h"
void
Parrot_go_collect(struct Parrot_Interp *interpreter)
{
if (interpreter->GC_block_level) {
return;
}
interpreter->collect_runs++; /* fake it */
}
void *
Parrot_reallocate(struct Parrot_Interp *interpreter, void *from, size_t size)
{
Buffer * buffer = from;
void *p;
size_t oldlen = buffer->buflen;
if (!buffer->bufstart)
p = buffer->bufstart = calloc(1, size);
else {
if (!size) { /* realloc(3) does free, if size == 0 here */
return buffer->bufstart; /* do nothing */
}
p = realloc(buffer->bufstart, size);
if (size > buffer->buflen)
memset((char*)p + oldlen, 0, size - oldlen);
buffer->bufstart = p;
}
buffer->buflen = size;
return p;
}
void *
Parrot_allocate(struct Parrot_Interp *interpreter, void *buffer, size_t size)
{
Buffer * b = buffer;
b->bufstart = malloc(size);
b->buflen = size;
return b;
}
void *
Parrot_allocate_zeroed(struct Parrot_Interp *interpreter, void *buffer,
size_t size)
{
Buffer * b = buffer;
b->bufstart = calloc(1, size);
b->buflen = size;
return b;
}
void *
Parrot_reallocate_string(struct Parrot_Interp *interpreter, STRING *str,
size_t size)
{
void *p;
size_t pad;
if (!str->bufstart)
Parrot_allocate_string(interpreter, str, size);
else if (size) {
pad = STRING_ALIGNMENT - 1;
/* COWable objects (i.e. strings) use an int at bufstart
* for refcounting in DOD */
size = ((size + pad + sizeof(int)) & ~pad);
p = realloc((char *)str->bufstart, size);
str->strstart = (char *)p + sizeof(int);
str->bufstart = p;
/* usable size at bufstart */
str->buflen = size - sizeof(int);
}
return str->strstart;
}
void *
Parrot_allocate_string(struct Parrot_Interp *interpreter, STRING *str,
size_t size)
{
void *p;
size_t pad;
if (size) {
pad = STRING_ALIGNMENT - 1;
/* COWable objects (i.e. strings) use an int at bufstart
* for refcounting in DOD */
size = ((size + pad + sizeof(int)) & ~pad);
p = calloc(1, size);
*(int*)p = 0;
str->strstart = (char *)p + sizeof(int);
str->bufstart = p;
str->buflen = size - sizeof(int);
}
return str;
}
void
Parrot_initialize_memory_pools(struct Parrot_Interp *interpreter)
{
}
void
Parrot_destroy_memory_pools(Interp *interpreter)
{
}
/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*
* vim: expandtab shiftwidth=4:
*/