142 lines
5.5 KiB
C
142 lines
5.5 KiB
C
#include <stdint.h>
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// NOTE: Macros ////////////////////////////////////////////////////////////////////////////////////
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#define HAV_STRINGIFY2(token) #token
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#define HAV_STRINGIFY(token) HAV_STRINGIFY2(token)
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#if defined(NDEBUG)
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#define HAV_ASSERT(expr)
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#else
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#define HAV_ASSERT(expr) \
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if (!(expr)) { \
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HAV_PrintLnFmt("Assertion triggered [file=\"" __FILE__ ":" HAV_STRINGIFY(__LINE__) "\", expr=\"" #expr "\"]"); \
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__debugbreak(); \
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}
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#endif
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#define HAV_ARRAY_UCOUNT(array) sizeof((array)) / sizeof((array)[0])
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#define HAV_CAST(Type) (Type)
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#define HAV_MIN(a, b) ((a) < (b) ? (a) : (b))
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#define HAV_MAX(a, b) ((a) > (b) ? (a) : (b))
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typedef float f32;
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typedef double f64;
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typedef uint64_t u64;
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// NOTE: Globals ///////////////////////////////////////////////////////////////////////////////////
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typedef struct HAV_Globals {
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HANDLE stdout_handle;
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bool write_to_console;
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} HAV_Globals;
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HAV_Globals pap_globals;
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// NOTE: Strings ///////////////////////////////////////////////////////////////////////////////////
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typedef struct HAV_Str8 {
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char *data;
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size_t size;
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} HAV_Str8;
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typedef struct HAV_Str8ToU64Result {
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bool success;
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uint64_t value;
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} HAV_Str8ToU64Result;
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typedef struct HAV_Str8BinarySplitResult {
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HAV_Str8 lhs;
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HAV_Str8 rhs;
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} HAV_Str8BinarySplitResult;
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#define HAV_STR8(string) (HAV_Str8){.data = (string), .size = HAV_ARRAY_UCOUNT(string) - 1 }
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#define HAV_STR8_FMT(string) (int)((string).size), (string).data
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bool HAV_Str8_Equals(HAV_Str8 lhs, HAV_Str8 rhs);
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HAV_Str8ToU64Result HAV_Str8_ToU64(HAV_Str8 string);
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HAV_Str8BinarySplitResult HAV_Str8_BinarySplit(HAV_Str8 buffer, HAV_Str8 find);
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bool HAV_CharIsWhiteSpace(char ch);
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bool HAV_CharIsDigit(char ch);
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// NOTE: Profiler //////////////////////////////////////////////////////////////////////////////////
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typedef struct HAV_ProfilerAnchor {
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HAV_Str8 label;
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u64 elapsed_tsc_exclusive; // Does not include children
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u64 elapsed_tsc_inclusive; // Includes children
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u64 byte_count;
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u64 hits;
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} HAV_ProfilerAnchor;
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typedef struct HAV_Profiler {
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HAV_ProfilerAnchor anchors[4096];
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u64 begin_tsc;
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u64 end_tsc;
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u64 parent_index;
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} HAV_Profiler;
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typedef struct HAV_ProfilerZone {
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u64 parent_index;
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uint32_t index;
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HAV_Str8 label;
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u64 elapsed_tsc_inclusive;
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u64 tsc;
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u64 byte_count;
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} HAV_ProfilerZone;
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static HAV_Profiler g_profiler;
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#define HAV_Profiler_BeginZone(label) HAV_Profiler_BeginZone_(HAV_STR8(label), __COUNTER__ + 1, 0)
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#define HAV_Profiler_BeginZoneBandwidth(label, byte_count) HAV_Profiler_BeginZone_(HAV_STR8(label), __COUNTER__ + 1, byte_count)
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static void HAV_Profiler_Dump ();
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static HAV_ProfilerZone HAV_Profiler_BeginZone_(HAV_Str8 label, uint32_t index, u64 byte_count);
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static void HAV_Profiler_EndZone (HAV_ProfilerZone zone);
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// NOTE: PCG32 /////////////////////////////////////////////////////////////////////////////////////
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// NOTE: PCG RNG from Demetri Spanos: https://github.com/demetri/scribbles
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// pcg32_pie, based on the minimal C version from O'Neill at pcg-random.org;
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// I've made a few (subjective) UX improvements for beginner use
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//
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// I'm not allowing the user to pick the stream/increment constant at all,
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// since there is almost never a reason for doing this in common applications.
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// This means that the prng state is reduced to a single uint64_t which also
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// means we can avoid having a state struct at all. The (fixed) stream constant
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// uses the leading hex digits of pi and e multipled by 2^30 (c90fdaa2 and
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// adf85459).
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//
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// I have also added an XOR with the same digits on the output path prior
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// to xorshift mixing. This prevents the "surprising" result that the
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// first "random 32-bit number" from a (very common) 0 seed is 0.
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//
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// use:
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// uint64_t state = 12345; // whatever you like can go here
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// uint32_t some_random_32_bits = pcg32_pie(&state);
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// uint32_t more_random_32_bits = pcg32_pie(&state);
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uint32_t HAV_PCG32_Pie (uint64_t *state);
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f64 HAV_PCG32_PieF64(uint64_t *state, f64 min, f64 max);
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// NOTE: Buffer ////////////////////////////////////////////////////////////////////////////////////
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typedef struct HAV_Buffer {
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char *data;
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size_t size;
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} HAV_Buffer;
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typedef struct HAV_BufferIterator {
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HAV_Buffer buffer;
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size_t index;
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} HAV_BufferIterator;
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bool HAV_BufferIsValid (HAV_Buffer buffer);
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HAV_BufferIterator HAV_BufferIteratorInit (HAV_Buffer buffer);
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bool HAV_BufferIteratorHasMoreBytes(HAV_BufferIterator it);
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uint8_t HAV_BufferIteratorNextByte (HAV_BufferIterator *it);
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// NOTE: File //////////////////////////////////////////////////////////////////////////////////////
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HAV_Buffer HAV_FileRead (char const *file_path);
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void HAV_FileFree (HAV_Buffer buffer);
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bool HAV_FileWrite(char const *file_path, void const *buffer, size_t buffer_size);
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// NOTE: Print /////////////////////////////////////////////////////////////////////////////////////
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void HAV_PrintHandle(void *handle, HAV_Str8 string);
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void HAV_PrintLn (HAV_Str8 string);
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void HAV_PrintLnFmt (char const *fmt, ...);
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