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[all] moved time and locking methods to the common library

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This commit is contained in:
Geoffrey McRae
2020-01-17 14:35:08 +11:00
parent 278d851c7c
commit 4746c89227
13 changed files with 55 additions and 95 deletions
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76
client/include/utils.h
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@@ -19,81 +19,9 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#pragma once
#include <time.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
static inline uint64_t microtime()
{
struct timespec time;
clock_gettime(CLOCK_MONOTONIC_RAW, &time);
return ((uint64_t)time.tv_sec * 1000000) + (time.tv_nsec / 1000);
}
static inline uint64_t nanotime()
{
struct timespec time;
clock_gettime(CLOCK_MONOTONIC_RAW, &time);
return ((uint64_t)time.tv_sec * 1e9) + time.tv_nsec;
}
static inline void nsleep(uint64_t ns)
{
const struct timespec ts =
{
.tv_sec = ns / 1e9,
.tv_nsec = ns - ((ns / 1e9) * 1e9)
};
nanosleep(&ts, NULL);
}
#ifdef ATOMIC_LOCKING
#define LG_LOCK_MODE "Atomic"
typedef volatile int LG_Lock;
#define LG_LOCK_INIT(x) (x) = 0
#define LG_LOCK(x) while(__sync_lock_test_and_set(&(x), 1)) {nsleep(100);}
#define LG_UNLOCK(x) __sync_lock_release(&x)
#define LG_LOCK_FREE(x)
#else
#include <SDL2/SDL.h>
#define LG_LOCK_MODE "Mutex"
typedef SDL_mutex * LG_Lock;
#define LG_LOCK_INIT(x) (x = SDL_CreateMutex())
#define LG_LOCK(x) SDL_LockMutex(x)
#define LG_UNLOCK(x) SDL_UnlockMutex(x)
#define LG_LOCK_FREE(x) SDL_DestroyMutex(x)
#endif
static inline uint32_t get_bit(const uint8_t * const base, size_t * const offset)
{
uint32_t out = ((*(base + (*offset >> 0x3))) >> (0x7 - (*offset & 0x7))) & 0x1;
++*offset;
return out;
}
static inline uint32_t get_bits(const uint8_t * const base, size_t * const offset, const uint8_t bits)
{
uint32_t value = 0;
for (int i = 0; i < bits; ++i)
value |= (get_bit(base, offset) ? 1 : 0) << (bits - i - 1);
return value;
}
static inline uint32_t decode_u_golomb(const uint8_t * const base, size_t * const offset)
{
uint32_t i = 0;
while(get_bit(base, offset) == 0)
++i;
return ((1 << i) - 1 + get_bits(base, offset, i));
}
static inline int32_t decode_s_golomb(const uint8_t * const base, size_t * const offset)
{
const uint32_t g = decode_u_golomb(base, offset);
return (g & 0x1) ? (g + 1) / 2 : -(g / 2);
}
// reads the specified file into a new buffer
// the callee must free the buffer
bool file_get_contents(const char * filename, char ** buffer, size_t * length);
bool file_get_contents(const char * filename, char ** buffer, size_t * length);