private static void *ZSTD_cwksp_reserve_table(ZSTD_cwksp *ws, nuint bytes)
{
ZSTD_cwksp_alloc_phase_e phase = ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_aligned;
void *alloc = ws->tableEnd;
void *end = (void *)((byte *)(alloc) + bytes);
void *top = ws->allocStart;
assert((bytes & ((nuint)(sizeof(uint)) - 1)) == 0);
ZSTD_cwksp_internal_advance_phase(ws, phase);
ZSTD_cwksp_assert_internal_consistency(ws);
assert(end <= top);
if (end > top)
{
ws->allocFailed = 1;
return(null);
}
ws->tableEnd = end;
return(alloc);
}
private static void ZSTD_cwksp_internal_advance_phase(ZSTD_cwksp *ws, ZSTD_cwksp_alloc_phase_e phase)
{
assert(phase >= ws->phase);
if (phase > ws->phase)
{
if (ws->phase < ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_buffers && phase >= ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_buffers)
{
ws->tableValidEnd = ws->objectEnd;
}
if (ws->phase < ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_aligned && phase >= ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_aligned)
{
ws->allocStart = (byte *)(ws->allocStart) - ((nuint)(ws->allocStart) & ((nuint)(sizeof(uint)) - 1));
if (ws->allocStart < ws->tableValidEnd)
{
ws->tableValidEnd = ws->allocStart;
}
}
ws->phase = phase;
}
}
private static void *ZSTD_cwksp_reserve_internal(ZSTD_cwksp *ws, nuint bytes, ZSTD_cwksp_alloc_phase_e phase)
{
void *alloc;
void *bottom = ws->tableEnd;
ZSTD_cwksp_internal_advance_phase(ws, phase);
alloc = (byte *)(ws->allocStart) - bytes;
if (bytes == 0)
{
return(null);
}
ZSTD_cwksp_assert_internal_consistency(ws);
assert(alloc >= bottom);
if (alloc < bottom)
{
ws->allocFailed = 1;
return(null);
}
if (alloc < ws->tableValidEnd)
{
ws->tableValidEnd = alloc;
}
ws->allocStart = alloc;
return(alloc);
}
