62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/* date = April 30th 2023 11:35 am */
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#ifndef VN_THREAD_CONTEXT_H
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#define VN_THREAD_CONTEXT_H
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#define per_thread __declspec(thread)
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struct thread_context
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{
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memory_arena Arenas[2];
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};
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per_thread thread_context *ThreadLocal_ThreadContext = 0;
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inline void SetThreadContext(thread_context *Context)
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{
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ThreadLocal_ThreadContext = Context;
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}
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inline thread_context *GetThreadContext(void)
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{
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return(ThreadLocal_ThreadContext);
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}
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static temporary_memory GetScratch(memory_arena **Conflicts, u64 ConflictCount)
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{
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temporary_memory Scratch = {};
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thread_context *Context = GetThreadContext();
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for(u64 ArenaIndex = 0;
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ArenaIndex < ArrayCount(Context->Arenas);
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++ArenaIndex)
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{
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b32 FoundConflict = false;
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for(u64 ConflictIndex = 0;
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ConflictIndex < ConflictCount;
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++ConflictIndex)
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{
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memory_arena *Conflict = Conflicts[ConflictIndex];
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if(Conflict == Context->Arenas + ArenaIndex)
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{
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FoundConflict = true;
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break;
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}
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}
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if(!FoundConflict)
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{
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Scratch = BeginTemporaryMemory(Context->Arenas + ArenaIndex);
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break;
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}
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}
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Assert(Scratch.Arena);
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return(Scratch);
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}
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#define ReleaseScratch(Scratch) EndTemporaryMemory(Scratch)
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#endif //VN_THREAD_CONTEXT_H
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