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Dqn/dqn_helpers.cpp

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#if !defined(DQN_NO_JSON_BUILDER)
// NOTE: [$JSON] Dqn_JSONBuilder ===================================================================
DQN_API Dqn_JSONBuilder Dqn_JSONBuilder_Init(Dqn_Allocator allocator, int spaces_per_indent)
{
Dqn_JSONBuilder result = {};
result.spaces_per_indent = spaces_per_indent;
result.string_builder.allocator = allocator;
return result;
}
DQN_API Dqn_String8 Dqn_JSONBuilder_Build(Dqn_JSONBuilder const *builder, Dqn_Allocator allocator)
{
Dqn_String8 result = Dqn_String8Builder_Build(&builder->string_builder, allocator);
return result;
}
DQN_API void Dqn_JSONBuilder_KeyValue(Dqn_JSONBuilder *builder, Dqn_String8 key, Dqn_String8 value)
{
if (key.size == 0 && value.size == 0)
return;
Dqn_JSONBuilderItem item = Dqn_JSONBuilderItem_KeyValue;
if (value.size == 1) {
if (value.data[0] == '{' || value.data[0] == '[') {
item = Dqn_JSONBuilderItem_OpenContainer;
} else if (value.data[0] == '}' || value.data[0] == ']') {
item = Dqn_JSONBuilderItem_CloseContainer;
}
}
bool adding_to_container_with_items = item != Dqn_JSONBuilderItem_CloseContainer &&
(builder->last_item == Dqn_JSONBuilderItem_KeyValue ||
builder->last_item == Dqn_JSONBuilderItem_CloseContainer);
uint8_t prefix_size = 0;
char prefix[2] = {0};
if (adding_to_container_with_items)
prefix[prefix_size++] = ',';
if (builder->last_item != Dqn_JSONBuilderItem_Empty)
prefix[prefix_size++] = '\n';
if (item == Dqn_JSONBuilderItem_CloseContainer)
builder->indent_level--;
int spaces_per_indent = builder->spaces_per_indent ? builder->spaces_per_indent : 2;
int spaces = builder->indent_level * spaces_per_indent;
if (key.size) {
Dqn_String8Builder_AppendF(&builder->string_builder,
"%.*s%*c\"%.*s\": %.*s",
prefix_size, prefix,
spaces, ' ',
DQN_STRING_FMT(key),
DQN_STRING_FMT(value));
} else {
Dqn_String8Builder_AppendF(&builder->string_builder,
"%.*s%*c%.*s",
prefix_size, prefix,
spaces, ' ',
DQN_STRING_FMT(value));
}
if (item == Dqn_JSONBuilderItem_OpenContainer)
builder->indent_level++;
builder->last_item = item;
}
DQN_API void Dqn_JSONBuilder_KeyValueFV(Dqn_JSONBuilder *builder, Dqn_String8 key, char const *value_fmt, va_list args)
{
Dqn_ThreadScratch scratch = Dqn_Thread_GetScratch(builder->string_builder.allocator.user_context);
Dqn_String8 value = Dqn_String8_InitFV(scratch.allocator, value_fmt, args);
Dqn_JSONBuilder_KeyValue(builder, key, value);
}
DQN_API void Dqn_JSONBuilder_KeyValueF(Dqn_JSONBuilder *builder, Dqn_String8 key, char const *value_fmt, ...)
{
va_list args;
va_start(args, value_fmt);
Dqn_JSONBuilder_KeyValueFV(builder, key, value_fmt, args);
va_end(args);
}
DQN_API void Dqn_JSONBuilder_ObjectBeginNamed(Dqn_JSONBuilder *builder, Dqn_String8 name)
{
Dqn_JSONBuilder_KeyValue(builder, name, DQN_STRING8("{"));
}
DQN_API void Dqn_JSONBuilder_ObjectEnd(Dqn_JSONBuilder *builder)
{
Dqn_JSONBuilder_KeyValue(builder, DQN_STRING8(""), DQN_STRING8("}"));
}
DQN_API void Dqn_JSONBuilder_ArrayBeginNamed(Dqn_JSONBuilder *builder, Dqn_String8 name)
{
Dqn_JSONBuilder_KeyValue(builder, name, DQN_STRING8("["));
}
DQN_API void Dqn_JSONBuilder_ArrayEnd(Dqn_JSONBuilder *builder)
{
Dqn_JSONBuilder_KeyValue(builder, DQN_STRING8(""), DQN_STRING8("]"));
}
DQN_API void Dqn_JSONBuilder_StringNamed(Dqn_JSONBuilder *builder, Dqn_String8 key, Dqn_String8 value)
{
Dqn_JSONBuilder_KeyValueF(builder, key, "\"%.*s\"", value.size, value.data);
}
DQN_API void Dqn_JSONBuilder_LiteralNamed(Dqn_JSONBuilder *builder, Dqn_String8 key, Dqn_String8 value)
{
Dqn_JSONBuilder_KeyValueF(builder, key, "%.*s", value.size, value.data);
}
DQN_API void Dqn_JSONBuilder_U64Named(Dqn_JSONBuilder *builder, Dqn_String8 key, uint64_t value)
{
Dqn_JSONBuilder_KeyValueF(builder, key, "%I64u", value);
}
DQN_API void Dqn_JSONBuilder_I64Named(Dqn_JSONBuilder *builder, Dqn_String8 key, int64_t value)
{
Dqn_JSONBuilder_KeyValueF(builder, key, "%I64d", value);
}
DQN_API void Dqn_JSONBuilder_F64Named(Dqn_JSONBuilder *builder, Dqn_String8 key, double value, int decimal_places)
{
if (!builder)
return;
if (decimal_places >= 16)
decimal_places = 16;
// NOTE: Generate the format string for the float, depending on how many
// decimals places it wants.
char float_fmt[16];
if (decimal_places > 0) {
// NOTE: Emit the format string "%.<decimal_places>f" i.e. %.1f
STB_SPRINTF_DECORATE(snprintf)(float_fmt, sizeof(float_fmt), "%%.%df", decimal_places);
} else {
// NOTE: Emit the format string "%f"
STB_SPRINTF_DECORATE(snprintf)(float_fmt, sizeof(float_fmt), "%%f");
}
char fmt[32];
if (key.size)
STB_SPRINTF_DECORATE(snprintf)(fmt, sizeof(fmt), "\"%%.*s\": %s", float_fmt);
else
STB_SPRINTF_DECORATE(snprintf)(fmt, sizeof(fmt), "%s", float_fmt);
Dqn_JSONBuilder_KeyValueF(builder, key, fmt, value);
}
DQN_API void Dqn_JSONBuilder_BoolNamed(Dqn_JSONBuilder *builder, Dqn_String8 key, bool value)
{
Dqn_String8 value_string = value ? DQN_STRING8("true") : DQN_STRING8("false");
Dqn_JSONBuilder_KeyValueF(builder, key, "%.*s", value_string.size, value_string.data);
}
#endif // !defined(DQN_NO_JSON_BUILDER)
#if !defined(DQN_NO_BIN)
// NOTE: [$BHEX] Dqn_Bin ===========================================================================
DQN_API char const *Dqn_Bin_HexBufferTrim0x(char const *hex, Dqn_usize size, Dqn_usize *real_size)
{
Dqn_String8 result = Dqn_String8_TrimWhitespaceAround(Dqn_String8_Init(hex, size));
result = Dqn_String8_TrimPrefix(result, DQN_STRING8("0x"), Dqn_String8EqCase_Insensitive);
if (real_size)
*real_size = result.size;
return result.data;
}
DQN_API Dqn_String8 Dqn_Bin_HexTrim0x(Dqn_String8 string)
{
Dqn_usize trimmed_size = 0;
char const *trimmed = Dqn_Bin_HexBufferTrim0x(string.data, string.size, &trimmed_size);
Dqn_String8 result = Dqn_String8_Init(trimmed, trimmed_size);
return result;
}
DQN_API Dqn_BinHexU64String Dqn_Bin_U64ToHexU64String(uint64_t number, uint32_t flags)
{
Dqn_String8 prefix = {};
if (!(flags & Dqn_BinHexU64StringFlags_No0xPrefix))
prefix = DQN_STRING8("0x");
Dqn_BinHexU64String result = {};
DQN_MEMCPY(result.data, prefix.data, prefix.size);
result.size += DQN_CAST(int8_t)prefix.size;
char const *fmt = (flags & Dqn_BinHexU64StringFlags_UppercaseHex) ? "%I64X" : "%I64x";
int size = STB_SPRINTF_DECORATE(snprintf)(result.data + result.size, DQN_ARRAY_UCOUNT(result.data) - result.size, fmt, number);
result.size += DQN_CAST(uint8_t)size;
DQN_ASSERT(result.size < DQN_ARRAY_UCOUNT(result.data));
// NOTE: snprintf returns the required size of the format string
// irrespective of if there's space or not, but, always null terminates so
// the last byte is wasted.
result.size = DQN_MIN(result.size, DQN_ARRAY_UCOUNT(result.data) - 1);
return result;
}
DQN_API Dqn_String8 Dqn_Bin_U64ToHex(Dqn_Allocator allocator, uint64_t number, uint32_t flags)
{
Dqn_String8 prefix = {};
if (!(flags & Dqn_BinHexU64StringFlags_No0xPrefix))
prefix = DQN_STRING8("0x");
char const *fmt = (flags & Dqn_BinHexU64StringFlags_UppercaseHex) ? "%I64X" : "%I64x";
Dqn_usize required_size = Dqn_CString8_FSize(fmt, number) + prefix.size;
Dqn_String8 result = Dqn_String8_Allocate(allocator, required_size, Dqn_ZeroMem_No);
if (Dqn_String8_IsValid(result)) {
DQN_MEMCPY(result.data, prefix.data, prefix.size);
int space = DQN_CAST(int)DQN_MAX((result.size - prefix.size) + 1, 0); /*null-terminator*/
STB_SPRINTF_DECORATE(snprintf)(result.data + prefix.size, space, fmt, number);
}
return result;
}
DQN_API uint64_t Dqn_Bin_HexBufferToU64(char const *hex, Dqn_usize size)
{
Dqn_usize trim_size = size;
char const *trim_hex = hex;
if (trim_size >= 2) {
if (trim_hex[0] == '0' && (trim_hex[1] == 'x' || trim_hex[1] == 'X')) {
trim_size -= 2;
trim_hex += 2;
}
}
DQN_ASSERT(DQN_CAST(Dqn_usize)(trim_size * 4 / 8) /*maximum amount of bytes represented in the hex string*/ <= sizeof(uint64_t));
uint64_t result = 0;
Dqn_usize max_size = DQN_MIN(size, 8 /*bytes*/ * 2 /*hex chars per byte*/);
for (Dqn_usize hex_index = 0; hex_index < max_size; hex_index++) {
char ch = trim_hex[hex_index];
if (!Dqn_Char_IsHex(ch))
break;
uint8_t val = Dqn_Char_HexToU8(ch);
result = (result << 4) | val;
}
return result;
}
DQN_API uint64_t Dqn_Bin_HexToU64(Dqn_String8 hex)
{
uint64_t result = Dqn_Bin_HexBufferToU64(hex.data, hex.size);
return result;
}
DQN_API bool Dqn_Bin_BytesToHexBuffer(void const *src, Dqn_usize src_size, char *dest, Dqn_usize dest_size)
{
if (!src || !dest)
return false;
if (!DQN_CHECK(dest_size >= src_size * 2))
return false;
char const *HEX = "0123456789abcdef";
unsigned char const *src_u8 = DQN_CAST(unsigned char const *)src;
for (Dqn_usize src_index = 0, dest_index = 0; src_index < src_size; src_index++) {
char byte = src_u8[src_index];
char hex01 = (byte >> 4) & 0b1111;
char hex02 = (byte >> 0) & 0b1111;
dest[dest_index++] = HEX[(int)hex01];
dest[dest_index++] = HEX[(int)hex02];
}
return true;
}
DQN_API char *Dqn_Bin_BytesToHexBufferArena(Dqn_Arena *arena, void const *src, Dqn_usize size)
{
char *result = size > 0 ? Dqn_Arena_NewArray(arena, char, (size * 2) + 1 /*null terminate*/, Dqn_ZeroMem_No) : nullptr;
if (result) {
bool converted = Dqn_Bin_BytesToHexBuffer(src, size, result, size * 2);
DQN_ASSERT(converted);
result[size * 2] = 0;
}
return result;
}
DQN_API Dqn_String8 Dqn_Bin_BytesToHexArena(Dqn_Arena *arena, void const *src, Dqn_usize size)
{
Dqn_String8 result = {};
result.data = Dqn_Bin_BytesToHexBufferArena(arena, src, size);
if (result.data)
result.size = size * 2;
return result;
}
DQN_API Dqn_usize Dqn_Bin_HexBufferToBytes(char const *hex, Dqn_usize hex_size, void *dest, Dqn_usize dest_size)
{
Dqn_usize result = 0;
if (!hex || hex_size <= 0)
return result;
Dqn_usize trim_size = 0;
char const *trim_hex = Dqn_Bin_HexBufferTrim0x(hex,
hex_size,
&trim_size);
// NOTE: Trimmed hex can be "0xf" -> "f" or "0xAB" -> "AB"
// Either way, the size can be odd or even, hence we round up to the nearest
// multiple of two to ensure that we calculate the min buffer size orrectly.
Dqn_usize trim_size_rounded_up = trim_size + (trim_size % 2);
Dqn_usize min_buffer_size = trim_size_rounded_up / 2;
if (dest_size < min_buffer_size || trim_size <= 0) {
DQN_ASSERTF(dest_size >= min_buffer_size, "Insufficient buffer size for converting hex to binary");
return result;
}
result = Dqn_Bin_HexBufferToBytesUnchecked(trim_hex,
trim_size,
dest,
dest_size);
return result;
}
DQN_API Dqn_usize Dqn_Bin_HexBufferToBytesUnchecked(char const *hex, Dqn_usize hex_size, void *dest, Dqn_usize dest_size)
{
Dqn_usize result = 0;
unsigned char *dest_u8 = DQN_CAST(unsigned char *)dest;
for (Dqn_usize hex_index = 0;
hex_index < hex_size;
hex_index += 2, result += 1)
{
char hex01 = hex[hex_index];
char hex02 = (hex_index + 1 < hex_size) ? hex[hex_index + 1] : 0;
char bit4_01 = (hex01 >= '0' && hex01 <= '9') ? 0 + (hex01 - '0')
: (hex01 >= 'a' && hex01 <= 'f') ? 10 + (hex01 - 'a')
: (hex01 >= 'A' && hex01 <= 'F') ? 10 + (hex01 - 'A')
: 0;
char bit4_02 = (hex02 >= '0' && hex02 <= '9') ? 0 + (hex02 - '0')
: (hex02 >= 'a' && hex02 <= 'f') ? 10 + (hex02 - 'a')
: (hex02 >= 'A' && hex02 <= 'F') ? 10 + (hex02 - 'A')
: 0;
char byte = (bit4_01 << 4) | (bit4_02 << 0);
dest_u8[result] = byte;
}
DQN_ASSERT(result <= dest_size);
return result;
}
DQN_API Dqn_usize Dqn_Bin_HexToBytesUnchecked(Dqn_String8 hex, void *dest, Dqn_usize dest_size)
{
Dqn_usize result = Dqn_Bin_HexBufferToBytesUnchecked(hex.data, hex.size, dest, dest_size);
return result;
}
DQN_API Dqn_usize Dqn_Bin_HexToBytes(Dqn_String8 hex, void *dest, Dqn_usize dest_size)
{
Dqn_usize result = Dqn_Bin_HexBufferToBytes(hex.data, hex.size, dest, dest_size);
return result;
}
DQN_API char *Dqn_Bin_HexBufferToBytesArena(Dqn_Arena *arena, char const *hex, Dqn_usize size, Dqn_usize *real_size)
{
char *result = nullptr;
if (!arena || !hex || size <= 0)
return result;
Dqn_usize trim_size = 0;
char const *trim_hex = Dqn_Bin_HexBufferTrim0x(hex,
size,
&trim_size);
Dqn_usize binary_size = trim_size / 2;
result = Dqn_Arena_NewArray(arena, char, binary_size, Dqn_ZeroMem_No);
if (result) {
Dqn_usize convert_size = Dqn_Bin_HexBufferToBytesUnchecked(trim_hex, trim_size, result, binary_size);
if (real_size)
*real_size = convert_size;
}
return result;
}
DQN_API Dqn_String8 Dqn_Bin_HexToBytesArena(Dqn_Arena *arena, Dqn_String8 hex)
{
Dqn_String8 result = {};
result.data = Dqn_Bin_HexBufferToBytesArena(arena, hex.data, hex.size, &result.size);
return result;
}
#endif // !defined(DQN_NO_BIN)
// NOTE: [$BITS] Dqn_Bit ===========================================================================
DQN_API void Dqn_Bit_UnsetInplace(uint64_t *flags, uint64_t bitfield)
{
*flags = (*flags & ~bitfield);
}
DQN_API void Dqn_Bit_SetInplace(uint64_t *flags, uint64_t bitfield)
{
*flags = (*flags | bitfield);
}
DQN_API bool Dqn_Bit_IsSet(uint64_t bits, uint64_t bits_to_set)
{
auto result = DQN_CAST(bool)((bits & bits_to_set) == bits_to_set);
return result;
}
DQN_API bool Dqn_Bit_IsNotSet(uint64_t bits, uint64_t bits_to_check)
{
auto result = !Dqn_Bit_IsSet(bits, bits_to_check);
return result;
}
// NOTE: [$SAFE] Dqn_Safe ==========================================================================
DQN_API int64_t Dqn_Safe_AddI64(int64_t a, int64_t b)
{
int64_t result = DQN_CHECKF(a <= INT64_MAX - b, "a=%zd, b=%zd", a, b) ? (a + b) : INT64_MAX;
return result;
}
DQN_API int64_t Dqn_Safe_MulI64(int64_t a, int64_t b)
{
int64_t result = DQN_CHECKF(a <= INT64_MAX / b, "a=%zd, b=%zd", a, b) ? (a * b) : INT64_MAX;
return result;
}
DQN_API uint64_t Dqn_Safe_AddU64(uint64_t a, uint64_t b)
{
uint64_t result = DQN_CHECKF(a <= UINT64_MAX - b, "a=%zu, b=%zu", a, b) ? (a + b) : UINT64_MAX;
return result;
}
DQN_API uint64_t Dqn_Safe_SubU64(uint64_t a, uint64_t b)
{
uint64_t result = DQN_CHECKF(a >= b, "a=%zu, b=%zu", a, b) ? (a - b) : 0;
return result;
}
DQN_API uint64_t Dqn_Safe_MulU64(uint64_t a, uint64_t b)
{
uint64_t result = DQN_CHECKF(a <= UINT64_MAX / b, "a=%zu, b=%zu", a, b) ? (a * b) : UINT64_MAX;
return result;
}
DQN_API uint32_t Dqn_Safe_SubU32(uint32_t a, uint32_t b)
{
uint32_t result = DQN_CHECKF(a >= b, "a=%u, b=%u", a, b) ? (a - b) : 0;
return result;
}
// NOTE: Dqn_Safe_SaturateCastUSizeToI*
// -----------------------------------------------------------------------------
// INT*_MAX literals will be promoted to the type of uintmax_t as uintmax_t is
// the highest possible rank (unsigned > signed).
DQN_API int Dqn_Safe_SaturateCastUSizeToInt(Dqn_usize val)
{
int result = DQN_CHECK(DQN_CAST(uintmax_t)val <= INT_MAX) ? DQN_CAST(int)val : INT_MAX;
return result;
}
DQN_API int8_t Dqn_Safe_SaturateCastUSizeToI8(Dqn_usize val)
{
int8_t result = DQN_CHECK(DQN_CAST(uintmax_t)val <= INT8_MAX) ? DQN_CAST(int8_t)val : INT8_MAX;
return result;
}
DQN_API int16_t Dqn_Safe_SaturateCastUSizeToI16(Dqn_usize val)
{
int16_t result = DQN_CHECK(DQN_CAST(uintmax_t)val <= INT16_MAX) ? DQN_CAST(int16_t)val : INT16_MAX;
return result;
}
DQN_API int32_t Dqn_Safe_SaturateCastUSizeToI32(Dqn_usize val)
{
int32_t result = DQN_CHECK(DQN_CAST(uintmax_t)val <= INT32_MAX) ? DQN_CAST(int32_t)val : INT32_MAX;
return result;
}
DQN_API int64_t Dqn_Safe_SaturateCastUSizeToI64(Dqn_usize val)
{
int64_t result = DQN_CHECK(DQN_CAST(uintmax_t)val <= INT64_MAX) ? DQN_CAST(int64_t)val : INT64_MAX;
return result;
}
// NOTE: Dqn_Safe_SaturateCastUSizeToU*
// -----------------------------------------------------------------------------
// Both operands are unsigned and the lowest rank operand will be promoted to
// match the highest rank operand.
DQN_API uint8_t Dqn_Safe_SaturateCastUSizeToU8(Dqn_usize val)
{
uint8_t result = DQN_CHECK(val <= UINT8_MAX) ? DQN_CAST(uint8_t)val : UINT8_MAX;
return result;
}
DQN_API uint16_t Dqn_Safe_SaturateCastUSizeToU16(Dqn_usize val)
{
uint16_t result = DQN_CHECK(val <= UINT16_MAX) ? DQN_CAST(uint16_t)val : UINT16_MAX;
return result;
}
DQN_API uint32_t Dqn_Safe_SaturateCastUSizeToU32(Dqn_usize val)
{
uint32_t result = DQN_CHECK(val <= UINT32_MAX) ? DQN_CAST(uint32_t)val : UINT32_MAX;
return result;
}
DQN_API uint64_t Dqn_Safe_SaturateCastUSizeToU64(Dqn_usize val)
{
uint64_t result = DQN_CHECK(val <= UINT64_MAX) ? DQN_CAST(uint64_t)val : UINT64_MAX;
return result;
}
// NOTE: Dqn_Safe_SaturateCastU64ToU*
// -----------------------------------------------------------------------------
// Both operands are unsigned and the lowest rank operand will be promoted to
// match the highest rank operand.
DQN_API unsigned int Dqn_Safe_SaturateCastU64ToUInt(uint64_t val)
{
unsigned int result = DQN_CHECK(val <= UINT8_MAX) ? DQN_CAST(unsigned int)val : UINT_MAX;
return result;
}
DQN_API uint8_t Dqn_Safe_SaturateCastU64ToU8(uint64_t val)
{
uint8_t result = DQN_CHECK(val <= UINT8_MAX) ? DQN_CAST(uint8_t)val : UINT8_MAX;
return result;
}
DQN_API uint16_t Dqn_Safe_SaturateCastU64ToU16(uint64_t val)
{
uint16_t result = DQN_CHECK(val <= UINT16_MAX) ? DQN_CAST(uint16_t)val : UINT16_MAX;
return result;
}
DQN_API uint32_t Dqn_Safe_SaturateCastU64ToU32(uint64_t val)
{
uint32_t result = DQN_CHECK(val <= UINT32_MAX) ? DQN_CAST(uint32_t)val : UINT32_MAX;
return result;
}
// NOTE: Dqn_Safe_SaturateCastISizeToI*
// -----------------------------------------------------------------------------
// Both operands are signed so the lowest rank operand will be promoted to
// match the highest rank operand.
DQN_API int Dqn_Safe_SaturateCastISizeToInt(Dqn_isize val)
{
DQN_ASSERT(val >= INT_MIN && val <= INT_MAX);
int result = DQN_CAST(int)DQN_CLAMP(val, INT_MIN, INT_MAX);
return result;
}
DQN_API int8_t Dqn_Safe_SaturateCastISizeToI8(Dqn_isize val)
{
DQN_ASSERT(val >= INT8_MIN && val <= INT8_MAX);
int8_t result = DQN_CAST(int8_t)DQN_CLAMP(val, INT8_MIN, INT8_MAX);
return result;
}
DQN_API int16_t Dqn_Safe_SaturateCastISizeToI16(Dqn_isize val)
{
DQN_ASSERT(val >= INT16_MIN && val <= INT16_MAX);
int16_t result = DQN_CAST(int16_t)DQN_CLAMP(val, INT16_MIN, INT16_MAX);
return result;
}
DQN_API int32_t Dqn_Safe_SaturateCastISizeToI32(Dqn_isize val)
{
DQN_ASSERT(val >= INT32_MIN && val <= INT32_MAX);
int32_t result = DQN_CAST(int32_t)DQN_CLAMP(val, INT32_MIN, INT32_MAX);
return result;
}
DQN_API int64_t Dqn_Safe_SaturateCastISizeToI64(Dqn_isize val)
{
DQN_ASSERT(val >= INT64_MIN && val <= INT64_MAX);
int64_t result = DQN_CAST(int64_t)DQN_CLAMP(val, INT64_MIN, INT64_MAX);
return result;
}
// NOTE: Dqn_Safe_SaturateCastISizeToU*
// -----------------------------------------------------------------------------
// If the value is a negative integer, we clamp to 0. Otherwise, we know that
// the value is >=0, we can upcast safely to bounds check against the maximum
// allowed value.
DQN_API unsigned int Dqn_Safe_SaturateCastISizeToUInt(Dqn_isize val)
{
unsigned int result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT_MAX))
result = DQN_CAST(unsigned int)val;
else
result = UINT_MAX;
}
return result;
}
DQN_API uint8_t Dqn_Safe_SaturateCastISizeToU8(Dqn_isize val)
{
uint8_t result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT8_MAX))
result = DQN_CAST(uint8_t)val;
else
result = UINT8_MAX;
}
return result;
}
DQN_API uint16_t Dqn_Safe_SaturateCastISizeToU16(Dqn_isize val)
{
uint16_t result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT16_MAX))
result = DQN_CAST(uint16_t)val;
else
result = UINT16_MAX;
}
return result;
}
DQN_API uint32_t Dqn_Safe_SaturateCastISizeToU32(Dqn_isize val)
{
uint32_t result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT32_MAX))
result = DQN_CAST(uint32_t)val;
else
result = UINT32_MAX;
}
return result;
}
DQN_API uint64_t Dqn_Safe_SaturateCastISizeToU64(Dqn_isize val)
{
uint64_t result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT64_MAX))
result = DQN_CAST(uint64_t)val;
else
result = UINT64_MAX;
}
return result;
}
// NOTE: Dqn_Safe_SaturateCastI64To*
// -----------------------------------------------------------------------------
// Both operands are signed so the lowest rank operand will be promoted to
// match the highest rank operand.
DQN_API Dqn_isize Dqn_Safe_SaturateCastI64ToISize(int64_t val)
{
DQN_CHECK(val >= DQN_ISIZE_MIN && val <= DQN_ISIZE_MAX);
Dqn_isize result = DQN_CAST(int64_t)DQN_CLAMP(val, DQN_ISIZE_MIN, DQN_ISIZE_MAX);
return result;
}
DQN_API int8_t Dqn_Safe_SaturateCastI64ToI8(int64_t val)
{
DQN_CHECK(val >= INT8_MIN && val <= INT8_MAX);
int8_t result = DQN_CAST(int8_t)DQN_CLAMP(val, INT8_MIN, INT8_MAX);
return result;
}
DQN_API int16_t Dqn_Safe_SaturateCastI64ToI16(int64_t val)
{
DQN_CHECK(val >= INT16_MIN && val <= INT16_MAX);
int16_t result = DQN_CAST(int16_t)DQN_CLAMP(val, INT16_MIN, INT16_MAX);
return result;
}
DQN_API int32_t Dqn_Safe_SaturateCastI64ToI32(int64_t val)
{
DQN_CHECK(val >= INT32_MIN && val <= INT32_MAX);
int32_t result = DQN_CAST(int32_t)DQN_CLAMP(val, INT32_MIN, INT32_MAX);
return result;
}
// NOTE: Dqn_Safe_SaturateCastIntTo*
// -----------------------------------------------------------------------------
DQN_API int8_t Dqn_Safe_SaturateCastIntToI8(int val)
{
DQN_CHECK(val >= INT8_MIN && val <= INT8_MAX);
int8_t result = DQN_CAST(int8_t)DQN_CLAMP(val, INT8_MIN, INT8_MAX);
return result;
}
DQN_API int16_t Dqn_Safe_SaturateCastIntToI16(int val)
{
DQN_CHECK(val >= INT16_MIN && val <= INT16_MAX);
int16_t result = DQN_CAST(int16_t)DQN_CLAMP(val, INT16_MIN, INT16_MAX);
return result;
}
DQN_API uint8_t Dqn_Safe_SaturateCastIntToU8(int val)
{
uint8_t result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT8_MAX))
result = DQN_CAST(uint8_t)val;
else
result = UINT8_MAX;
}
return result;
}
DQN_API uint16_t Dqn_Safe_SaturateCastIntToU16(int val)
{
uint16_t result = 0;
if (DQN_CHECK(val >= DQN_CAST(Dqn_isize)0)) {
if (DQN_CHECK(DQN_CAST(uintmax_t)val <= UINT16_MAX))
result = DQN_CAST(uint16_t)val;
else
result = UINT16_MAX;
}
return result;
}
DQN_API uint32_t Dqn_Safe_SaturateCastIntToU32(int val)
{
static_assert(sizeof(val) <= sizeof(uint32_t), "Sanity check to allow simplifying of casting");
uint32_t result = 0;
if (DQN_CHECK(val >= 0))
result = DQN_CAST(uint32_t)val;
return result;
}
DQN_API uint64_t Dqn_Safe_SaturateCastIntToU64(int val)
{
static_assert(sizeof(val) <= sizeof(uint64_t), "Sanity check to allow simplifying of casting");
uint64_t result = 0;
if (DQN_CHECK(val >= 0))
result = DQN_CAST(uint64_t)val;
return result;
}
// NOTE: [$MISC] Misc ==============================================================================
DQN_API int Dqn_SNPrintFDotTruncate(char *buffer, int size, char const *fmt, ...)
{
va_list args;
va_start(args, fmt);
int size_required = STB_SPRINTF_DECORATE(vsnprintf)(buffer, size, fmt, args);
int result = DQN_MAX(DQN_MIN(size_required, size - 1), 0);
if (result == size - 1) {
buffer[size - 2] = '.';
buffer[size - 3] = '.';
}
va_end(args);
return result;
}
DQN_API Dqn_U64String Dqn_U64ToString(uint64_t val, char separator)
{
Dqn_U64String result = {};
if (val == 0) {
result.data[result.size++] = '0';
} else {
// NOTE: The number is written in reverse because we form the string by
// dividing by 10, so we write it in, then reverse it out after all is
// done.
Dqn_U64String temp = {};
for (Dqn_usize digit_count = 0; val > 0; digit_count++) {
if (separator && (digit_count != 0) && (digit_count % 3 == 0))
temp.data[temp.size++] = separator;
auto digit = DQN_CAST(char)(val % 10);
temp.data[temp.size++] = '0' + digit;
val /= 10;
}
// NOTE: Reverse the string
DQN_MSVC_WARNING_PUSH
DQN_MSVC_WARNING_DISABLE(6293) // Ill-defined for-loop
DQN_MSVC_WARNING_DISABLE(6385) // Reading invalid data from 'temp.data' NOTE(doyle): Unsigned overflow is valid for loop termination
for (Dqn_usize temp_index = temp.size - 1; temp_index < temp.size; temp_index--) {
char ch = temp.data[temp_index];
result.data[result.size++] = ch;
}
DQN_MSVC_WARNING_POP
}
return result;
}
// NOTE: [$DLIB] Dqn_Library =======================================================================
Dqn_Library *g_dqn_library;
DQN_API Dqn_Library *Dqn_Library_Init()
{
if (!g_dqn_library) {
static Dqn_Library default_instance = {};
g_dqn_library = &default_instance;
}
// NOTE: Init check ===========================================================================
Dqn_Library *result = g_dqn_library;
Dqn_TicketMutex_Begin(&result->lib_mutex);
DQN_DEFER { Dqn_TicketMutex_End(&result->lib_mutex); };
if (result->lib_init)
return result;
// NOTE: Query OS page size ====================================================================
{
SYSTEM_INFO system_info = {};
#if defined(DQN_OS_WIN32)
GetSystemInfo(&system_info);
result->os_page_size = system_info.dwPageSize;
result->os_alloc_granularity = system_info.dwAllocationGranularity;
#else
// TODO(doyle): Get the proper page size from the OS.
result->os_page_size = DQN_KILOBYTES(4);
result->os_alloc_granularity = DQN_KILOBYTES(64);
#endif
}
// NOTE Initialise fields ======================================================================
#if !defined(DQN_NO_PROFILER)
result->profiler = &result->profiler_default_instance;
#endif
result->lib_init = true;
Dqn_ArenaCatalog_Init(&result->arena_catalog, &result->arena);
result->exe_dir = Dqn_OS_EXEDir(&result->arena);
// NOTE: Leak tracing ==========================================================================
#if defined(DQN_LEAK_TRACING) // NOTE: Initialise the allocation leak tracker
{
result->alloc_tracking_disabled = true; // TODO(doyle): @robust Does this need to be atomic?
Dqn_String8 sample_backtrace = Dqn_String8_InitCString8(b_stacktrace_get_string());
Dqn_String8 clean_backtrace = Dqn_Debug_CleanStackTrace(sample_backtrace);
result->stack_trace_offset_to_our_call_stack = DQN_CAST(uint16_t)(sample_backtrace.size - clean_backtrace.size);
free(sample_backtrace.data);
result->alloc_table = Dqn_DSMap_Init<Dqn_AllocRecord>(4096);
result->alloc_tracking_disabled = false;
}
#endif
// NOTE: Print out init features ===============================================================
Dqn_Log_DebugF("Dqn Library initialised:\n");
Dqn_Print_StdLnF(Dqn_PrintStd_Err, " OS Page Size/Alloc Granularity: %$$_I32u/%$$_I32u", result->os_page_size, result->os_alloc_granularity);
#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
if (DQN_ASAN_POISON) {
Dqn_Print_StdLnF(Dqn_PrintStd_Err, " ASAN manual poisoning%s", DQN_ASAN_VET_POISON ? " (+vet sanity checks)" : "");
Dqn_Print_StdLnF(Dqn_PrintStd_Err, " ASAN poison guard size: %$$_I32u", DQN_ASAN_POISON_GUARD_SIZE);
}
#endif
#if defined(DQN_LEAK_TRACING)
Dqn_Print_StdLnF(Dqn_PrintStd_Err, " Allocation leak tracing");
#endif
#if !defined(DQN_NO_PROFILER)
Dqn_Print_StdLnF(Dqn_PrintStd_Err, " TSC profiler available");
#endif
// TODO(doyle): Add stacktrace feature log
Dqn_Print_StdLnF(Dqn_PrintStd_Err, "");
return result;
}
DQN_API void Dqn_Library_SetPointer(Dqn_Library *library)
{
if (library)
g_dqn_library = library;
}
#if !defined(DQN_NO_PROFILER)
DQN_API void Dqn_Library_SetProfiler(Dqn_Profiler *profiler)
{
if (profiler)
g_dqn_library->profiler = profiler;
}
#endif
DQN_API void Dqn_Library_SetLogCallback(Dqn_LogProc *proc, void *user_data)
{
g_dqn_library->log_callback = proc;
g_dqn_library->log_user_data = user_data;
}
DQN_API void Dqn_Library_DumpThreadContextArenaStat(Dqn_String8 file_path)
{
#if defined(DQN_DEBUG_THREAD_CONTEXT)
// NOTE: Open a file to write the arena stats to
FILE *file = nullptr;
fopen_s(&file, file_path.data, "a+b");
if (file) {
Dqn_Log_ErrorF("Failed to dump thread context arenas [file=%.*s]", DQN_STRING_FMT(file_path));
return;
}
// NOTE: Copy the stats from library book-keeping
// NOTE: Extremely short critical section, copy the stats then do our
// work on it.
Dqn_ArenaStat stats[Dqn_CArray_CountI(g_dqn_library->thread_context_arena_stats)];
int stats_size = 0;
Dqn_TicketMutex_Begin(&g_dqn_library->thread_context_mutex);
stats_size = g_dqn_library->thread_context_arena_stats_count;
DQN_MEMCPY(stats, g_dqn_library->thread_context_arena_stats, sizeof(stats[0]) * stats_size);
Dqn_TicketMutex_End(&g_dqn_library->thread_context_mutex);
// NOTE: Print the cumulative stat
Dqn_DateHMSTimeString now = Dqn_Date_HMSLocalTimeStringNow();
fprintf(file,
"Time=%.*s %.*s | Thread Context Arenas | Count=%d\n",
now.date_size, now.date,
now.hms_size, now.hms,
g_dqn_library->thread_context_arena_stats_count);
// NOTE: Write the cumulative thread arena data
{
Dqn_ArenaStat stat = {};
for (Dqn_usize index = 0; index < stats_size; index++) {
Dqn_ArenaStat const *current = stats + index;
stat.capacity += current->capacity;
stat.used += current->used;
stat.wasted += current->wasted;
stat.blocks += current->blocks;
stat.capacity_hwm = DQN_MAX(stat.capacity_hwm, current->capacity_hwm);
stat.used_hwm = DQN_MAX(stat.used_hwm, current->used_hwm);
stat.wasted_hwm = DQN_MAX(stat.wasted_hwm, current->wasted_hwm);
stat.blocks_hwm = DQN_MAX(stat.blocks_hwm, current->blocks_hwm);
}
Dqn_ArenaStatString stats_string = Dqn_Arena_StatString(&stat);
fprintf(file, " [ALL] CURR %.*s\n", stats_string.size, stats_string.data);
}
// NOTE: Print individual thread arena data
for (Dqn_usize index = 0; index < stats_size; index++) {
Dqn_ArenaStat const *current = stats + index;
Dqn_ArenaStatString current_string = Dqn_Arena_StatString(current);
fprintf(file, " [%03d] CURR %.*s\n", DQN_CAST(int)index, current_string.size, current_string.data);
}
fclose(file);
Dqn_Log_InfoF("Dumped thread context arenas [file=%.*s]", DQN_STRING_FMT(file_path));
#else
(void)file_path;
#endif // #if defined(DQN_DEBUG_THREAD_CONTEXT)
}
#if !defined(DQN_NO_PROFILER)
// NOTE: [$PROF] Dqn_Profiler ======================================================================
Dqn_ProfilerZoneScope::Dqn_ProfilerZoneScope(Dqn_String8 name, uint16_t anchor_index)
{
zone = Dqn_Profiler_BeginZoneWithIndex(name, anchor_index);
}
Dqn_ProfilerZoneScope::~Dqn_ProfilerZoneScope()
{
Dqn_Profiler_EndZone(zone);
}
Dqn_ProfilerZone Dqn_Profiler_BeginZoneWithIndex(Dqn_String8 name, uint16_t anchor_index)
{
Dqn_ProfilerAnchor *anchor = Dqn_Profiler_AnchorBuffer(Dqn_ProfilerAnchorBuffer_Back) + anchor_index;
anchor->name = name;
Dqn_ProfilerZone result = {};
result.begin_tsc = Dqn_CPU_TSC();
result.anchor_index = anchor_index;
result.parent_zone = g_dqn_library->profiler->parent_zone;
result.elapsed_tsc_at_zone_start = anchor->tsc_inclusive;
g_dqn_library->profiler->parent_zone = anchor_index;
return result;
}
void Dqn_Profiler_EndZone(Dqn_ProfilerZone zone)
{
uint64_t elapsed_tsc = Dqn_CPU_TSC() - zone.begin_tsc;
Dqn_ProfilerAnchor *anchor_buffer = Dqn_Profiler_AnchorBuffer(Dqn_ProfilerAnchorBuffer_Back);
Dqn_ProfilerAnchor *anchor = anchor_buffer + zone.anchor_index;
anchor->hit_count++;
anchor->tsc_inclusive = zone.elapsed_tsc_at_zone_start + elapsed_tsc;
anchor->tsc_exclusive += elapsed_tsc;
Dqn_ProfilerAnchor *parent_anchor = anchor_buffer + zone.parent_zone;
parent_anchor->tsc_exclusive -= elapsed_tsc;
g_dqn_library->profiler->parent_zone = zone.parent_zone;
}
Dqn_ProfilerAnchor *Dqn_Profiler_AnchorBuffer(Dqn_ProfilerAnchorBuffer buffer)
{
uint8_t offset = buffer == Dqn_ProfilerAnchorBuffer_Back ? 0 : 1;
uint8_t anchor_buffer = (g_dqn_library->profiler->active_anchor_buffer + offset) % DQN_ARRAY_UCOUNT(g_dqn_library->profiler->anchors);
Dqn_ProfilerAnchor *result = g_dqn_library->profiler->anchors[anchor_buffer];
return result;
}
void Dqn_Profiler_SwapAnchorBuffer(uint32_t anchor_count)
{
g_dqn_library->profiler->active_anchor_buffer++;
Dqn_ProfilerAnchor *anchors = Dqn_Profiler_AnchorBuffer(Dqn_ProfilerAnchorBuffer_Back);
DQN_MEMSET(anchors, 0, anchor_count * sizeof(g_dqn_library->profiler->anchors[0][0]));
}
void Dqn_Profiler_Dump(uint64_t tsc_per_second)
{
Dqn_ProfilerAnchor *anchors = Dqn_Profiler_AnchorBuffer(Dqn_ProfilerAnchorBuffer_Back);
for (size_t anchor_index = 1; anchor_index < DQN_PROFILER_ANCHOR_BUFFER_SIZE; anchor_index++) {
Dqn_ProfilerAnchor const *anchor = anchors + anchor_index;
if (!anchor->hit_count)
continue;
uint64_t tsc_exclusive = anchor->tsc_exclusive;
uint64_t tsc_inclusive = anchor->tsc_inclusive;
Dqn_f64 tsc_exclusive_milliseconds = tsc_exclusive * 1000 / DQN_CAST(Dqn_f64)tsc_per_second;
if (tsc_exclusive == tsc_inclusive) {
Dqn_Print_LnF("%.*s[%u]: %.1fms",
DQN_STRING_FMT(anchor->name),
anchor->hit_count,
tsc_exclusive_milliseconds);
} else {
Dqn_f64 tsc_inclusive_milliseconds = tsc_inclusive * 1000 / DQN_CAST(Dqn_f64)tsc_per_second;
Dqn_Print_LnF("%.*s[%u]: %.1f/%.1fms",
DQN_STRING_FMT(anchor->name),
anchor->hit_count,
tsc_exclusive_milliseconds,
tsc_inclusive_milliseconds);
}
}
}
#endif // !defined(DQN_NO_PROFILER)
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