// NOTE: [$CMAC] Compiler macros =================================================================== // NOTE: Warning! Order is important here, clang-cl on Windows defines _MSC_VER #if defined(_MSC_VER) #if defined(__clang__) #define DQN_COMPILER_W32_CLANG #define DQN_COMPILER_CLANG #else #define DQN_COMPILER_W32_MSVC #endif #elif defined(__clang__) #define DQN_COMPILER_CLANG #elif defined(__GNUC__) #define DQN_COMPILER_GCC #endif // NOTE: Declare struct literals that work in both C and C++ because the syntax // is different between languages. #if 0 struct Foo { int a; } struct Foo foo = DQN_LITERAL(Foo){32}; // Works on both C and C++ #endif #if defined(__cplusplus) #define DQN_LITERAL(T) T #else #define DQN_LITERAL(T) (T) #endif #if defined(__cplusplus) #define DQN_THREAD_LOCAL thread_local #else #define DQN_THREAD_LOCAL _Thread_local #endif #if defined(_WIN32) #define DQN_OS_WIN32 #elif defined(__aarch64__) || defined(_M_ARM64) #define DQN_OS_ARM64 #elif defined(__linux__) #define DQN_OS_UNIX #endif #if defined(DQN_COMPILER_W32_MSVC) || defined(DQN_COMPILER_W32_CLANG) #if defined(_CRT_SECURE_NO_WARNINGS) #define DQN_CRT_SECURE_NO_WARNINGS_PREVIOUSLY_DEFINED #else #define _CRT_SECURE_NO_WARNINGS #endif #endif #if defined(DQN_COMPILER_W32_MSVC) #define DQN_FMT_STRING_ANNOTATE _Printf_format_string_ #define DQN_MSVC_WARNING_PUSH __pragma(warning(push)) #define DQN_MSVC_WARNING_DISABLE(...) __pragma(warning(disable: ##__VA_ARGS__)) #define DQN_MSVC_WARNING_POP __pragma(warning(pop)) #else #define DQN_FMT_STRING_ANNOTATE #define DQN_MSVC_WARNING_PUSH #define DQN_MSVC_WARNING_DISABLE(...) #define DQN_MSVC_WARNING_POP #endif // NOTE: [$MACR] Macros ============================================================================ #define DQN_FOR_UINDEX(index, size) for (Dqn_usize index = 0; index < size; index++) #define DQN_FOR_IINDEX(index, size) for (Dqn_isize index = 0; index < size; index++) #define Dqn_AlignUpPowerOfTwo(value, pot) (((uintptr_t)(value) + ((uintptr_t)(pot) - 1)) & ~((uintptr_t)(pot) - 1)) #define Dqn_AlignDownPowerOfTwo(value, pot) ((uintptr_t)(value) & ((uintptr_t)(pot) - 1)) #define Dqn_IsPowerOfTwo(value) ((((uintptr_t)(value)) & (((uintptr_t)(value)) - 1)) == 0) #define Dqn_IsPowerOfTwoAligned(value, pot) ((((uintptr_t)value) & (((uintptr_t)pot) - 1)) == 0) // NOTE: Alloc Macros ============================================================================== #if !defined(DQN_ALLOC) #define DQN_ALLOC(size) Dqn_VMem_Reserve(size, Dqn_VMemCommit_Yes, Dqn_VMemPage_ReadWrite) #endif #if !defined(DQN_DEALLOC) #define DQN_DEALLOC(ptr, size) Dqn_VMem_Release(ptr, size) #endif // NOTE: String.h Dependencies ===================================================================== #if !defined(DQN_MEMCPY) || !defined(DQN_MEMSET) || !defined(DQN_MEMCMP) || !defined(DQN_MEMMOVE) #include #if !defined(DQN_MEMCPY) #define DQN_MEMCPY(dest, src, count) memcpy(dest, src, count) #endif #if !defined(DQN_MEMSET) #define DQN_MEMSET(dest, value, count) memset(dest, value, count) #endif #if !defined(DQN_MEMCMP) #define DQN_MEMCMP(lhs, rhs, count) memcmp(lhs, rhs, count) #endif #if !defined(DQN_MEMMOVE) #define DQN_MEMMOVE(dest, src, count) memmove(dest, src, count) #endif #endif // NOTE: Math.h Dependencies ======================================================================= #if !defined(DQN_SQRTF) || !defined(DQN_SINF) || !defined(DQN_COSF) || !defined(DQN_TANF) #include #define DQN_SQRTF(val) sqrtf(val) #if !defined(DQN_SINF) #define DQN_SINF(val) sinf(val) #endif #if !defined(DQN_COSF) #define DQN_COSF(val) cosf(val) #endif #if !defined(DQN_TANF) #define DQN_TANF(val) tanf(val) #endif #endif // NOTE: Math Macros =============================================================================== #define DQN_PI 3.14159265359f #define DQN_DEGREE_TO_RADIAN(degrees) ((degrees) * (DQN_PI / 180.0f)) #define DQN_RADIAN_TO_DEGREE(radians) ((radians) * (180.f * DQN_PI)) #define DQN_ABS(val) (((val) < 0) ? (-(val)) : (val)) #define DQN_MAX(a, b) (((a) > (b)) ? (a) : (b)) #define DQN_MIN(a, b) (((a) < (b)) ? (a) : (b)) #define DQN_CLAMP(val, lo, hi) DQN_MAX(DQN_MIN(val, hi), lo) #define DQN_SQUARED(val) ((val) * (val)) // NOTE: Function/Variable Annotations ============================================================= #if defined(DQN_STATIC_API) #define DQN_API static #else #define DQN_API #endif #define DQN_LOCAL_PERSIST static #define DQN_FILE_SCOPE static #define DQN_CAST(val) (val) #if defined(DQN_COMPILER_W32_MSVC) || defined(DQN_COMPILER_W32_CLANG) #define DQN_FORCE_INLINE __forceinline #else #define DQN_FORCE_INLINE inline __attribute__((always_inline)) #endif // NOTE: Preprocessor Token Tricks ================================================================= #define DQN_TOKEN_COMBINE2(x, y) x ## y #define DQN_TOKEN_COMBINE(x, y) DQN_TOKEN_COMBINE2(x, y) #define DQN_SWAP(a, b) \ do \ { \ auto temp = a; \ a = b; \ b = temp; \ } while (0) // NOTE: Size Macros =============================================================================== #define DQN_ISIZEOF(val) DQN_CAST(ptrdiff_t)sizeof(val) #define DQN_ARRAY_UCOUNT(array) (sizeof(array)/(sizeof((array)[0]))) #define DQN_ARRAY_ICOUNT(array) (Dqn_isize)DQN_ARRAY_UCOUNT(array) #define DQN_CHAR_COUNT(string) (sizeof(string) - 1) // NOTE: SI Byte Macros ============================================================================ #define DQN_BYTES(val) (val) #define DQN_KILOBYTES(val) (1024ULL * DQN_BYTES(val)) #define DQN_MEGABYTES(val) (1024ULL * DQN_KILOBYTES(val)) #define DQN_GIGABYTES(val) (1024ULL * DQN_MEGABYTES(val)) // NOTE: Time Macros =============================================================================== #define DQN_SECONDS_TO_MS(val) ((val) * 1000) #define DQN_MINS_TO_S(val) ((val) * 60ULL) #define DQN_HOURS_TO_S(val) (DQN_MINS_TO_S(val) * 60ULL) #define DQN_DAYS_TO_S(val) (DQN_HOURS_TO_S(val) * 24ULL) #define DQN_YEARS_TO_S(val) (DQN_DAYS_TO_S(val) * 365ULL) // NOTE: Assert Macros ============================================================================= #define DQN_HARD_ASSERT(expr) DQN_HARD_ASSERTF(expr, "") #define DQN_HARD_ASSERTF(expr, fmt, ...) \ if (!(expr)) { \ Dqn_Log_ErrorF("Hard assert triggered " #expr ". " fmt, ##__VA_ARGS__); \ DQN_DUMP_STACK_TRACE; \ DQN_DEBUG_BREAK; \ } #if defined(DQN_NO_ASSERT) #define DQN_ASSERTF(...) #define DQN_ASSERT(...) #else #define DQN_ASSERT(expr) DQN_ASSERTF(expr, "") #define DQN_ASSERTF(expr, fmt, ...) \ if (!(expr)) { \ Dqn_Log_ErrorF("Assert triggered " #expr ". " fmt, ##__VA_ARGS__); \ DQN_DUMP_STACK_TRACE; \ DQN_DEBUG_BREAK; \ } #endif #define DQN_INVALID_CODE_PATHF(fmt, ...) DQN_ASSERTF(0, fmt, ##__VA_ARGS__) #define DQN_INVALID_CODE_PATH DQN_INVALID_CODE_PATHF("Invalid code path triggered") // NOTE: Check macro =============================================================================== // Check the expression trapping in debug, whilst in release- trapping is // removed and the expression is evaluated as if it were a normal 'if' branch. // // This allows handling of the condition gracefully when compiled out but traps // to notify the developer in builds when it's compiled in. #if 0 bool flag = true; if (DQN_CHECKF(flag, "Flag was false!")) { // This branch will execute! } else { // Prints "Flag was false!" } #endif #define DQN_CHECK(expr) DQN_CHECKF(expr, "") #if defined(DQN_NO_CHECK_BREAK) #define DQN_CHECKF(expr, fmt, ...) \ ((expr) ? true : (Dqn_Log_TypeFCallSite(Dqn_LogType_Warning, DQN_CALL_SITE, fmt, ## __VA_ARGS__), false)) #else #define DQN_CHECKF(expr, fmt, ...) \ ((expr) ? true : (Dqn_Log_TypeFCallSite(Dqn_LogType_Error, DQN_CALL_SITE, fmt, ## __VA_ARGS__), DQN_DEBUG_BREAK, false)) #endif // NOTE: Zero initialisation macro ================================================================= #if defined(__cplusplus) #define DQN_ZERO_INIT {} #else #define DQN_ZERO_INIT {0} #endif // NOTE: Defer Macro =============================================================================== #if defined(__cplusplus) #if 0 #include int main() { DQN_DEFER { printf("Three ..\n"); }; printf("One ..\n"); printf("Two ..\n"); // One .. // Two .. // Three .. return 0; } #endif template struct Dqn_Defer { Procedure proc; Dqn_Defer(Procedure p) : proc(p) {} ~Dqn_Defer() { proc(); } }; struct Dqn_DeferHelper { template Dqn_Defer operator+(Lambda lambda) { return Dqn_Defer(lambda); }; }; #define DQN_UNIQUE_NAME(prefix) DQN_TOKEN_COMBINE(prefix, __LINE__) #define DQN_DEFER const auto DQN_UNIQUE_NAME(defer_lambda_) = Dqn_DeferHelper() + [&]() #endif // defined(__cplusplus) #define DQN_DEFER_LOOP(begin, end) \ for (bool DQN_UNIQUE_NAME(once) = (begin, true); \ DQN_UNIQUE_NAME(once); \ end, DQN_UNIQUE_NAME(once) = false) // NOTE: [$TYPE] Types ============================================================================= typedef intptr_t Dqn_isize; typedef uintptr_t Dqn_usize; typedef intptr_t Dqn_isize; typedef float Dqn_f32; typedef double Dqn_f64; typedef unsigned int Dqn_uint; typedef int32_t Dqn_b32; #define DQN_USIZE_MAX UINTPTR_MAX #define DQN_ISIZE_MAX INTPTR_MAX #define DQN_ISIZE_MIN INTPTR_MIN typedef enum Dqn_ZeroMem { Dqn_ZeroMem_No, // Memory can be handed out without zero-ing it out Dqn_ZeroMem_Yes, // Memory should be zero-ed out before giving to the callee } Dqn_ZeroMem; struct Dqn_String8 { char *data; // The bytes of the string Dqn_usize size; // The number of bytes in the string #if defined(__cplusplus) char const *begin() const { return data; } char const *end () const { return data + size; } char *begin() { return data; } char *end () { return data + size; } #endif }; // NOTE: [$INTR] Intrinsics ======================================================================== // Platform agnostic functions for CPU level instructions like atomics, barriers // and timestamp counters. // // NOTE: API // @proc Dqn_Atomic_SetValue64, Dqn_Atomic_SetValue32 // @desc Atomically set the value into the target using an atomic compare and // swap. // @param[in,out] target The target pointer to set atomically // @param[in] value The value to set atomically into the target // @return The value that was last stored in the target // @proc Dqn_CPUID // Execute 'CPUID' instruction to query the capabilities of the current CPU. // NOTE: Dqn_Atomic_Add/Exchange return the previous value store in the target #if defined(DQN_COMPILER_W32_MSVC) || defined(DQN_COMPILER_W32_CLANG) #include #define Dqn_Atomic_CompareExchange64(dest, desired_val, prev_val) _InterlockedCompareExchange64((__int64 volatile *)dest, desired_val, prev_val) #define Dqn_Atomic_CompareExchange32(dest, desired_val, prev_val) _InterlockedCompareExchange((long volatile *)dest, desired_val, prev_val) #define Dqn_Atomic_AddU32(target, value) _InterlockedExchangeAdd((long volatile *)target, value) #define Dqn_Atomic_AddU64(target, value) _InterlockedExchangeAdd64((__int64 volatile *)target, value) #define Dqn_Atomic_SubU32(target, value) Dqn_Atomic_AddU32(DQN_CAST(long volatile *)target, (long)-value) #define Dqn_Atomic_SubU64(target, value) Dqn_Atomic_AddU64(target, (uint64_t)-value) #define Dqn_CPU_TSC() __rdtsc() #define Dqn_CompilerReadBarrierAndCPUReadFence _ReadBarrier(); _mm_lfence() #define Dqn_CompilerWriteBarrierAndCPUWriteFence _WriteBarrier(); _mm_sfence() #elif defined(DQN_COMPILER_GCC) || defined(DQN_COMPILER_CLANG) #if defined(__ANDROID__) #else #include #endif #define Dqn_Atomic_AddU32(target, value) __atomic_fetch_add(target, value, __ATOMIC_ACQ_REL) #define Dqn_Atomic_AddU64(target, value) __atomic_fetch_add(target, value, __ATOMIC_ACQ_REL) #define Dqn_Atomic_SubU32(target, value) __atomic_fetch_sub(target, value, __ATOMIC_ACQ_REL) #define Dqn_Atomic_SubU64(target, value) __atomic_fetch_sub(target, value, __ATOMIC_ACQ_REL) #if defined(DQN_COMPILER_GCC) #define Dqn_CPU_TSC() __rdtsc() #else #define Dqn_CPU_TSC() __builtin_readcyclecounter() #endif #define Dqn_CompilerReadBarrierAndCPUReadFence asm volatile("lfence" ::: "memory") #define Dqn_CompilerWriteBarrierAndCPUWriteFence asm volatile("sfence" ::: "memory") #else #error "Compiler not supported" #endif DQN_FORCE_INLINE uint64_t Dqn_Atomic_SetValue64(uint64_t volatile *target, uint64_t value) { #if defined(DQN_COMPILER_W32_MSVC) || defined(DQN_COMPILER_W32_CLANG) __int64 result; do { result = *target; } while (Dqn_Atomic_CompareExchange64(target, value, result) != result); return DQN_CAST(uint64_t)result; #elif defined(DQN_COMPILER_GCC) || defined(DQN_COMPILER_CLANG) uint64_t result = __sync_lock_test_and_set(target, value); return result; #else #error Unsupported compiler #endif } DQN_FORCE_INLINE long Dqn_Atomic_SetValue32(long volatile *target, long value) { #if defined(DQN_COMPILER_W32_MSVC) || defined(DQN_COMPILER_W32_CLANG) long result; do { result = *target; } while (Dqn_Atomic_CompareExchange32(target, value, result) != result); return result; #elif defined(DQN_COMPILER_GCC) || defined(DQN_COMPILER_CLANG) long result = __sync_lock_test_and_set(target, value); return result; #else #error Unsupported compiler #endif } #if !defined(DQN_OS_ARM64) struct Dqn_CPUIDRegisters { Dqn_uint array[4]; ///< Values from 'CPUID' instruction for each register (EAX, EBX, ECX, EDX) }; Dqn_CPUIDRegisters Dqn_CPUID(int function_id); #endif // DQN_OS_ARM64 // NOTE: [$TMUT] Dqn_TicketMutex =================================================================== // // A mutex implemented using an atomic compare and swap on tickets handed out // for each critical section. // // This mutex serves ticket in order and will block all other threads until the // tickets are returned in order. The thread with the oldest ticket that has // not been returned has right of way to execute, all other threads will be // blocked in an atomic compare and swap loop. block execution by going into an // atomic // // When a thread is blocked by this mutex, a spinlock intrinsic `_mm_pause` is // used to yield the CPU and reduce spinlock on the thread. This mutex is not // ideal for long blocking operations. This mutex does not issue any syscalls // and relies entirely on atomic instructions. // // NOTE: API // // @proc Dqn_TicketMutex_Begin, End // @desc Lock and unlock the mutex respectively // @proc Dqn_TicketMutex_MakeTicket // @desc Allocate the next available ticket from the mutex for locking using // Dqn_TicketMutex_BeginTicket(). // @param[in] mutex The mutex #if 0 Dqn_TicketMutex mutex = {}; unsigned int ticket = Dqn_TicketMutex_MakeTicket(&mutex); Dqn_TicketMutex_BeginTicket(&mutex, ticket); // Blocking call until we attain the lock Dqn_TicketMutex_End(&mutex); #endif // @proc Dqn_TicketMutex_BeginTicket // @desc Lock the mutex using the given ticket if possible, otherwise block // waiting until the mutex can be locked. // @proc Dqn_TicketMutex_CanLock // @desc Determine if the mutex can be locked using the given ticket number struct Dqn_TicketMutex { unsigned int volatile ticket; ///< The next ticket to give out to the thread taking the mutex unsigned int volatile serving; ///< The ticket ID to block the mutex on until it is returned }; void Dqn_TicketMutex_Begin (Dqn_TicketMutex *mutex); void Dqn_TicketMutex_End (Dqn_TicketMutex *mutex); Dqn_uint Dqn_TicketMutex_MakeTicket (Dqn_TicketMutex *mutex); void Dqn_TicketMutex_BeginTicket(Dqn_TicketMutex const *mutex, Dqn_uint ticket); bool Dqn_TicketMutex_CanLock (Dqn_TicketMutex const *mutex, Dqn_uint ticket);