private static void ZSTD_cwksp_mark_tables_dirty(ZSTD_cwksp *ws)
{
assert(ws->tableValidEnd >= ws->objectEnd);
assert(ws->tableValidEnd <= ws->allocStart);
ws->tableValidEnd = ws->objectEnd;
ZSTD_cwksp_assert_internal_consistency(ws);
}
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);
}
private static void ZSTD_cwksp_free(ZSTD_cwksp *ws, ZSTD_customMem customMem)
{
void *ptr = ws->workspace;
memset((void *)(ws), (0), ((nuint)(sizeof(ZSTD_cwksp))));
ZSTD_customFree(ptr, customMem);
}
private static void ZSTD_cwksp_assert_internal_consistency(ZSTD_cwksp *ws)
{
assert(ws->workspace <= ws->objectEnd);
assert(ws->objectEnd <= ws->tableEnd);
assert(ws->objectEnd <= ws->tableValidEnd);
assert(ws->tableEnd <= ws->allocStart);
assert(ws->tableValidEnd <= ws->allocStart);
assert(ws->allocStart <= ws->workspaceEnd);
}
private static void ZSTD_cwksp_mark_tables_clean(ZSTD_cwksp *ws)
{
assert(ws->tableValidEnd >= ws->objectEnd);
assert(ws->tableValidEnd <= ws->allocStart);
if (ws->tableValidEnd < ws->tableEnd)
{
ws->tableValidEnd = ws->tableEnd;
}
ZSTD_cwksp_assert_internal_consistency(ws);
}
private static void ZSTD_cwksp_clean_tables(ZSTD_cwksp *ws)
{
assert(ws->tableValidEnd >= ws->objectEnd);
assert(ws->tableValidEnd <= ws->allocStart);
if (ws->tableValidEnd < ws->tableEnd)
{
memset((ws->tableValidEnd), (0), (nuint)(((byte *)(ws->tableEnd) - (byte *)(ws->tableValidEnd))));
}
ZSTD_cwksp_mark_tables_clean(ws);
}
private static void ZSTD_cwksp_bump_oversized_duration(ZSTD_cwksp *ws, nuint additionalNeededSpace)
{
if ((ZSTD_cwksp_check_too_large(ws, additionalNeededSpace)) != 0)
{
ws->workspaceOversizedDuration++;
}
else
{
ws->workspaceOversizedDuration = 0;
}
}
private static nuint ZSTD_cwksp_create(ZSTD_cwksp *ws, nuint size, ZSTD_customMem customMem)
{
void *workspace = ZSTD_customMalloc(size, customMem);
if (workspace == null)
{
return(unchecked ((nuint)(-(int)ZSTD_ErrorCode.ZSTD_error_memory_allocation)));
}
ZSTD_cwksp_init(ws, workspace, size, ZSTD_cwksp_static_alloc_e.ZSTD_cwksp_dynamic_alloc);
return(0);
}
private static void ZSTD_cwksp_clear(ZSTD_cwksp *ws)
{
ws->tableEnd = ws->objectEnd;
ws->allocStart = ws->workspaceEnd;
ws->allocFailed = 0;
if (ws->phase > ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_buffers)
{
ws->phase = ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_buffers;
}
ZSTD_cwksp_assert_internal_consistency(ws);
}
private static void ZSTD_cwksp_init(ZSTD_cwksp *ws, void *start, nuint size, ZSTD_cwksp_static_alloc_e isStatic)
{
assert(((nuint)(start) & ((nuint)(sizeof(void *)) - 1)) == 0);
ws->workspace = start;
ws->workspaceEnd = (byte *)(start) + size;
ws->objectEnd = ws->workspace;
ws->tableValidEnd = ws->objectEnd;
ws->phase = ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_objects;
ws->isStatic = isStatic;
ZSTD_cwksp_clear(ws);
ws->workspaceOversizedDuration = 0;
ZSTD_cwksp_assert_internal_consistency(ws);
}
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_reserve_object(ZSTD_cwksp *ws, nuint bytes)
{
nuint roundedBytes = ZSTD_cwksp_align(bytes, (nuint)(sizeof(void *)));
void *alloc = ws->objectEnd;
void *end = (void *)((byte *)(alloc) + roundedBytes);
assert(((nuint)(alloc) & ((nuint)(sizeof(void *)) - 1)) == 0);
assert((bytes & ((nuint)(sizeof(void *)) - 1)) == 0);
ZSTD_cwksp_assert_internal_consistency(ws);
if (ws->phase != ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_objects || end > ws->workspaceEnd)
{
ws->allocFailed = 1;
return(null);
}
ws->objectEnd = end;
ws->tableEnd = end;
ws->tableValidEnd = 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_aligned(ZSTD_cwksp *ws, nuint bytes)
{
assert((bytes & ((nuint)(sizeof(uint)) - 1)) == 0);
return(ZSTD_cwksp_reserve_internal(ws, ZSTD_cwksp_align(bytes, (nuint)(sizeof(uint))), ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_aligned));
}
private static int ZSTD_cwksp_check_wasteful(ZSTD_cwksp *ws, nuint additionalNeededSpace)
{
return(((ZSTD_cwksp_check_too_large(ws, additionalNeededSpace)) != 0 && ws->workspaceOversizedDuration > 128) ? 1 : 0);
}
private static int ZSTD_cwksp_check_too_large(ZSTD_cwksp *ws, nuint additionalNeededSpace)
{
return(ZSTD_cwksp_check_available(ws, additionalNeededSpace * 3));
}
private static int ZSTD_cwksp_check_available(ZSTD_cwksp *ws, nuint additionalNeededSpace)
{
return((ZSTD_cwksp_available_space(ws) >= additionalNeededSpace) ? 1 : 0);
}
private static nuint ZSTD_cwksp_available_space(ZSTD_cwksp *ws)
{
return((nuint)((byte *)(ws->allocStart) - (byte *)(ws->tableEnd)));
}
private static int ZSTD_cwksp_reserve_failed(ZSTD_cwksp *ws)
{
return((int)ws->allocFailed);
}
private static nuint ZSTD_cwksp_used(ZSTD_cwksp *ws)
{
return((nuint)((byte *)(ws->tableEnd) - (byte *)(ws->workspace)) + (nuint)((byte *)(ws->workspaceEnd) - (byte *)(ws->allocStart)));
}
private static void ZSTD_cwksp_clear_tables(ZSTD_cwksp *ws)
{
ws->tableEnd = ws->objectEnd;
ZSTD_cwksp_assert_internal_consistency(ws);
}
private static int ZSTD_cwksp_owns_buffer(ZSTD_cwksp *ws, void *ptr)
{
return(((ptr != null) && (ws->workspace <= ptr) && (ptr <= ws->workspaceEnd)) ? 1 : 0);
}
private static nuint ZSTD_cwksp_sizeof(ZSTD_cwksp *ws)
{
return((nuint)((byte *)(ws->workspaceEnd) - (byte *)(ws->workspace)));
}
private static void ZSTD_cwksp_move(ZSTD_cwksp *dst, ZSTD_cwksp *src)
{
*dst = *src;
memset((void *)(src), (0), ((nuint)(sizeof(ZSTD_cwksp))));
}
private static byte *ZSTD_cwksp_reserve_buffer(ZSTD_cwksp *ws, nuint bytes)
{
return((byte *)(ZSTD_cwksp_reserve_internal(ws, bytes, ZSTD_cwksp_alloc_phase_e.ZSTD_cwksp_alloc_buffers)));
}