93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
#pragma once
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#include <windows.h>
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#include <bfc/platform/types.h>
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#include <bfc/dispatch.h>
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class ThreadID;
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class api_threadpool : public Dispatchable
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{
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protected:
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api_threadpool() {}
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~api_threadpool() {}
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public:
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typedef int (*ThreadPoolFunc)(HANDLE handle, void *user_data, intptr_t id);
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enum
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{
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// pass this flag to AddHandle or RunFunction indicate that your thread function
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// might run for a long time
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FLAG_LONG_EXECUTION = 0x1,
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FLAG_REQUIRE_COM_STA = 0x2,
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FLAG_REQUIRE_COM_MT = 0x4,
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MASK_COM_FLAGS = 0x6,
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};
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public:
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ThreadID *ReserveThread(int flags);
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/* Release a thread you've previously reserved */
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void ReleaseThread(ThreadID *thread_id);
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/* adds a waitable handle to the thread pool. when the event is signalled, your function ptr will get called
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user_data and id values get passed to your function.
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your function should return 1 to indicate that it can be removed
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flags, see api_threadpool */
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int AddHandle(ThreadID *threadid, HANDLE handle, api_threadpool::ThreadPoolFunc func, void *user_data, intptr_t id, int flags);
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void RemoveHandle(ThreadID *threadid, HANDLE handle);
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int RunFunction(ThreadID *threadid, api_threadpool::ThreadPoolFunc func, void *user_data, intptr_t id, int flags);
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size_t GetNumberOfThreads(); // total number of threads in the threadpool
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size_t GetNumberOfActiveThreads(); // number of threads that are currently being used (inside user function but not necessarily busy)
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enum
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{
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RESERVETHREAD = 0,
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RELEASETHREAD = 1,
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ADDHANDLE = 2,
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REMOVEHANDLE = 3,
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RUNFUNCTION = 4,
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GETNUMBEROFTHREADS = 5,
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GETNUMBEROFACTIVETHREADS = 6,
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};
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};
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inline ThreadID *api_threadpool::ReserveThread(int flags)
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{
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return _call(RESERVETHREAD, (ThreadID *)0, flags);
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}
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inline void api_threadpool::ReleaseThread(ThreadID *thread_id)
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{
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_voidcall(RELEASETHREAD, thread_id);
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}
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inline int api_threadpool::AddHandle(ThreadID *threadid, HANDLE handle, api_threadpool::ThreadPoolFunc func, void *user_data, intptr_t id, int flags)
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{
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return _call(ADDHANDLE, (int)1, threadid, handle, func, user_data, id, flags);
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}
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inline void api_threadpool::RemoveHandle(ThreadID *threadid, HANDLE handle)
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{
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_voidcall(REMOVEHANDLE, threadid, handle);
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}
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inline int api_threadpool::RunFunction(ThreadID *threadid, api_threadpool::ThreadPoolFunc func, void *user_data, intptr_t id, int flags)
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{
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return _call(RUNFUNCTION, (int)1, threadid, func, user_data, id, flags);
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}
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inline size_t api_threadpool::GetNumberOfThreads()
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{
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return _call(GETNUMBEROFTHREADS, (size_t)0);
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}
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inline size_t api_threadpool::GetNumberOfActiveThreads()
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{
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return _call(GETNUMBEROFACTIVETHREADS, (size_t)0);
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}
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// {4DE015D3-11D8-4ac6-A3E6-216DF5252107}
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static const GUID ThreadPoolGUID =
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{ 0x4de015d3, 0x11d8, 0x4ac6, { 0xa3, 0xe6, 0x21, 0x6d, 0xf5, 0x25, 0x21, 0x7 } };
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