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feat(lock): add basic lock functions

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fallenoak 2023-03-03 15:34:02 -06:00 • committed by GitHub
parent 3b5da1af9c
commit e8d3709d31
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58
bc/Lock.cpp Normal file
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#include "bc/Lock.hpp"
#include "bc/Debug.hpp"
#include "bc/Process.hpp"
#include "bc/System_Lock.hpp"
void Blizzard::Lock::DoOnce(DoOnceData& a1, void (*a2)(void*), void* a3) {
if (!a1.done) {
if (Blizzard::Lock::Atomic::Increment(&a1.atomic) == 1) {
a2(a3);
a1.done = true;
} else {
while (!a1.done) {
Blizzard::Process::Sleep(1);
}
}
}
}
int32_t Blizzard::Lock::MutexCreate(Blizzard::Lock::Mutex& mutex) {
#if defined(WHOA_SYSTEM_WIN)
InitializeCriticalSection(&mutex);
return 0;
#elif defined(WHOA_SYSTEM_MAC) || defined(WHOA_SYSTEM_LINUX)
Blizzard::Lock::DoOnce(System_Lock::s_initMutexAttrOnce, System_Lock::InitAttr, nullptr);
auto result = pthread_mutex_init(&mutex, &System_Lock::s_mutexattr);
BLIZZARD_ASSERT(result == 0);
return result;
#endif
}
int32_t Blizzard::Lock::MutexEnter(Blizzard::Lock::Mutex& mutex) {
#if defined(WHOA_SYSTEM_WIN)
EnterCriticalSection(&mutex);
return 0;
#elif defined(WHOA_SYSTEM_MAC) || defined(WHOA_SYSTEM_LINUX)
auto result = pthread_mutex_lock(&mutex);
BLIZZARD_ASSERT(result == 0);
return result;
#endif
}
int32_t Blizzard::Lock::MutexLeave(Blizzard::Lock::Mutex& mutex) {
#if defined(WHOA_SYSTEM_WIN)
LeaveCriticalSection(&mutex);
return 0;
#elif defined(WHOA_SYSTEM_MAC) || defined(WHOA_SYSTEM_LINUX)
auto result = pthread_mutex_unlock(&mutex);
BLIZZARD_ASSERT(result == 0);
return result;
#endif
}