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update SDL3 to latest commit

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This commit is contained in:
Sasha Szpakowski
2024-10-06 20:30:44 -03:00
parent 1b0fdc338b
commit 9e5eb1b018
1426 changed files with 242456 additions and 103496 deletions
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libs/SDL3/src/atomic/SDL_spinlock.c
+20 -20
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@@ -20,7 +20,7 @@
*/
#include "SDL_internal.h"
#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
#if defined(SDL_PLATFORM_WINDOWS)
#include "../core/windows/SDL_windows.h"
#endif
@@ -44,7 +44,7 @@
#include <libkern/OSAtomic.h>
#endif
/* *INDENT-OFF* */ /* clang-format off */
/* *INDENT-OFF* */ // clang-format off
#if defined(__WATCOMC__) && defined(__386__)
SDL_COMPILE_TIME_ASSERT(locksize, 4==sizeof(SDL_SpinLock));
extern __inline int _SDL_xchg_watcom(volatile int *a, int v);
@@ -53,11 +53,11 @@ extern __inline int _SDL_xchg_watcom(volatile int *a, int v);
parm [ecx] [eax] \
value [eax] \
modify exact [eax];
#endif /* __WATCOMC__ && __386__ */
/* *INDENT-ON* */ /* clang-format on */
#endif // __WATCOMC__ && __386__
/* *INDENT-ON* */ // clang-format on
/* This function is where all the magic happens... */
SDL_bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
// This function is where all the magic happens...
bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
{
#if defined(HAVE_GCC_ATOMICS) || defined(HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
return __sync_lock_test_and_set(lock, 1) == 0;
@@ -116,47 +116,47 @@ SDL_bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
return result == 0;
#elif defined(SDL_PLATFORM_MACOS) || defined(SDL_PLATFORM_IOS) || defined(SDL_PLATFORM_TVOS)
/* Maybe used for PowerPC, but the Intel asm or gcc atomics are favored. */
// Maybe used for PowerPC, but the Intel asm or gcc atomics are favored.
return OSAtomicCompareAndSwap32Barrier(0, 1, lock);
#elif defined(SDL_PLATFORM_SOLARIS) && defined(_LP64)
/* Used for Solaris with non-gcc compilers. */
// Used for Solaris with non-gcc compilers.
return ((int)atomic_cas_64((volatile uint64_t *)lock, 0, 1) == 0);
#elif defined(SDL_PLATFORM_SOLARIS) && !defined(_LP64)
/* Used for Solaris with non-gcc compilers. */
// Used for Solaris with non-gcc compilers.
return ((int)atomic_cas_32((volatile uint32_t *)lock, 0, 1) == 0);
#elif defined(PS2)
uint32_t oldintr;
SDL_bool res = SDL_FALSE;
// disable interuption
bool res = false;
// disable interruption
oldintr = DIntr();
if (*lock == 0) {
*lock = 1;
res = SDL_TRUE;
res = true;
}
// enable interuption
// enable interruption
if (oldintr) {
EIntr();
}
return res;
#else
/* Terrible terrible damage */
// Terrible terrible damage
static SDL_Mutex *_spinlock_mutex;
if (!_spinlock_mutex) {
/* Race condition on first lock... */
// Race condition on first lock...
_spinlock_mutex = SDL_CreateMutex();
}
SDL_LockMutex(_spinlock_mutex);
if (*lock == 0) {
*lock = 1;
SDL_UnlockMutex(_spinlock_mutex);
return SDL_TRUE;
return true;
} else {
SDL_UnlockMutex(_spinlock_mutex);
return SDL_FALSE;
return false;
}
#endif
}
@@ -164,13 +164,13 @@ SDL_bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
void SDL_LockSpinlock(SDL_SpinLock *lock)
{
int iterations = 0;
/* FIXME: Should we have an eventual timeout? */
// FIXME: Should we have an eventual timeout?
while (!SDL_TryLockSpinlock(lock)) {
if (iterations < 32) {
iterations++;
SDL_CPUPauseInstruction();
} else {
/* !!! FIXME: this doesn't definitely give up the current timeslice, it does different things on various platforms. */
// !!! FIXME: this doesn't definitely give up the current timeslice, it does different things on various platforms.
SDL_Delay(0);
}
}
@@ -193,7 +193,7 @@ void SDL_UnlockSpinlock(SDL_SpinLock *lock)
*lock = 0;
#elif defined(SDL_PLATFORM_SOLARIS)
/* Used for Solaris when not using gcc. */
// Used for Solaris when not using gcc.
*lock = 0;
membar_producer();