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Add barrier implementation

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This commit is contained in:
doylet
2026-03-07 22:07:40 +11:00
parent 19df3b75ce
commit 0f9af50a6d
6 changed files with 139 additions and 41 deletions
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Source/OS/dn_os_w32.cpp
+41 -7
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@@ -1019,7 +1019,7 @@ static DN_OSW32SyncPrimitive *DN_OS_U64ToW32SyncPrimitive_(DN_U64 u64)
return result;
}
static DN_U64 DN_OSW32SyncPrimitiveToU64(DN_OSW32SyncPrimitive *primitive)
static DN_U64 DN_OS_W32SyncPrimitiveToU64(DN_OSW32SyncPrimitive *primitive)
{
DN_U64 result = 0;
static_assert(sizeof(result) == sizeof(primitive), "Pointer size mis-match");
@@ -1057,16 +1057,16 @@ static void DN_OS_W32DeallocSyncPrimitive_(DN_OSW32SyncPrimitive *primitive)
}
}
// NOTE: DN_OSSemaphore ////////////////////////////////////////////////////////////////////////////
// NOTE: DN_OSSemaphore
DN_API DN_OSSemaphore DN_OS_SemaphoreInit(DN_U32 initial_count)
{
DN_OSSemaphore result = {};
DN_OSSemaphore result = {};
DN_OSW32SyncPrimitive *primitive = DN_OS_W32AllocSyncPrimitive_();
if (primitive) {
SECURITY_ATTRIBUTES security_attribs = {};
primitive->sem = CreateSemaphoreA(&security_attribs, initial_count, INT32_MAX, nullptr /*name*/);
if (primitive->sem)
result.handle = DN_OSW32SyncPrimitiveToU64(primitive);
result.handle = DN_OS_W32SyncPrimitiveToU64(primitive);
if (!primitive->sem)
DN_OS_W32DeallocSyncPrimitive_(primitive);
}
@@ -1106,14 +1106,48 @@ DN_API DN_OSSemaphoreWaitResult DN_OS_SemaphoreWait(DN_OSSemaphore *semaphore, D
return result;
}
// NOTE: DN_OSMutex ////////////////////////////////////////////////////////////////////////////////
// NOTE: DN_OSBarrier
DN_API DN_OSBarrier DN_OS_BarrierInit(DN_U32 thread_count)
{
DN_OSBarrier result = {};
DN_OSW32SyncPrimitive *primitive = DN_OS_W32AllocSyncPrimitive_();
if (primitive) {
BOOL init_result = InitializeSynchronizationBarrier(&primitive->barrier, thread_count, /*lSpinCount=*/-1);
if (init_result) {
result.handle = DN_OS_W32SyncPrimitiveToU64(primitive);
} else {
DN_OS_W32DeallocSyncPrimitive_(primitive);
}
}
return result;
}
DN_API void DN_OS_BarrierDeinit(DN_OSBarrier *barrier)
{
if (barrier && barrier->handle != 0) {
DN_OSW32SyncPrimitive *primitive = DN_OS_U64ToW32SyncPrimitive_(barrier->handle);
bool result = DeleteSynchronizationBarrier(&primitive->barrier);
DN_Assert(result);
DN_OS_W32DeallocSyncPrimitive_(primitive);
}
}
DN_API void DN_OS_BarrierWait(DN_OSBarrier *barrier)
{
if (barrier && barrier->handle != 0) {
DN_OSW32SyncPrimitive *primitive = DN_OS_U64ToW32SyncPrimitive_(barrier->handle);
EnterSynchronizationBarrier(&primitive->barrier, /*dwFlags=*/ 0);
}
}
// NOTE: DN_OSMutex
DN_API DN_OSMutex DN_OS_MutexInit()
{
DN_OSW32SyncPrimitive *primitive = DN_OS_W32AllocSyncPrimitive_();
if (primitive)
InitializeCriticalSection(&primitive->mutex);
DN_OSMutex result = {};
result.handle = DN_OSW32SyncPrimitiveToU64(primitive);
result.handle = DN_OS_W32SyncPrimitiveToU64(primitive);
return result;
}
@@ -1150,7 +1184,7 @@ DN_API DN_OSConditionVariable DN_OS_ConditionVariableInit()
if (primitive)
InitializeConditionVariable(&primitive->cv);
DN_OSConditionVariable result = {};
result.handle = DN_OSW32SyncPrimitiveToU64(primitive);
result.handle = DN_OS_W32SyncPrimitiveToU64(primitive);
return result;
}