/*
* Allocates chunk of memory.
* Filters out invalid sizes.
* Rounds the size up to the next multiple of 4.
* Obtains a chunk of at least the desired size.
*/
PmReturn_t
heap_getChunk(uint16_t requestedsize, uint8_t **r_pchunk)
{
PmReturn_t retval;
uint16_t adjustedsize;
/* Ensure size request is valid */
if (requestedsize > HEAP_MAX_LIVE_CHUNK_SIZE)
{
PM_RAISE(retval, PM_RET_EX_MEM);
return retval;
}
else if (requestedsize < HEAP_MIN_CHUNK_SIZE)
{
requestedsize = HEAP_MIN_CHUNK_SIZE;
}
/*
* Round up the size to a multiple of 4 bytes.
* This maintains alignment on 32-bit platforms (required).
*/
adjustedsize = ((requestedsize + 3) & ~3);
/* Attempt to get a chunk */
retval = heap_getChunkImpl(adjustedsize, r_pchunk);
#ifdef HAVE_GC
/* Perform GC if out of memory, gc is enabled and not in native session */
if ((retval == PM_RET_EX_MEM) && (pmHeap.auto_gc == C_TRUE)
&& (gVmGlobal.nativeframe.nf_active == C_FALSE))
{
retval = heap_gcRun();
PM_RETURN_IF_ERROR(retval);
/* Attempt to get a chunk */
retval = heap_getChunkImpl(adjustedsize, r_pchunk);
}
#endif /* HAVE_GC */
/* Ensure that the pointer is 4-byte aligned */
if (retval == PM_RET_OK)
{
C_ASSERT(((intptr_t)*r_pchunk & 3) == 0);
}
return retval;
}
/*
* Allocates chunk of memory.
* Filters out invalid sizes.
* Rounds the size up to the next multiple of 4.
* Obtains a chunk of at least the desired size.
*/
PmReturn_t
heap_getChunk(uint16_t requestedsize, uint8_t **r_pchunk)
{
PmReturn_t retval;
uint16_t adjustedsize;
/* Ensure size request is valid */
if (requestedsize > HEAP_MAX_CHUNK_SIZE)
{
PM_RAISE(retval, PM_RET_EX_MEM);
return retval;
}
if (requestedsize < HEAP_MIN_CHUNK_SIZE)
{
requestedsize = HEAP_MIN_CHUNK_SIZE;
}
/*
* Round up the size to a multiple of 4 bytes.
* This maintains alignment on 32-bit platforms (required).
*/
adjustedsize = ((requestedsize + 3) & ~3);
/* Attempt to get a chunk */
retval = heap_getChunkImpl(adjustedsize, r_pchunk);
/* Perform GC if out of memory and auto-gc is enabled */
if ((retval == PM_RET_EX_MEM) && (pmHeap.auto_gc == C_TRUE))
{
retval = heap_gcRun();
PM_RETURN_IF_ERROR(retval);
/* Attempt to get a chunk */
retval = heap_getChunkImpl(adjustedsize, r_pchunk);
}
/* Ensure that the pointer is 4-byte aligned */
if (retval == PM_RET_OK)
{
C_ASSERT(((int)*r_pchunk & 3) == 0);
}
return retval;
}
