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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
#ifndef THREAD_H
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#define THREAD_H
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/*************************************************************************/
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/* thread.h */
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/* From https://github.com/Relintai/pandemonium_engine (MIT) */
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/*************************************************************************/
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#include "core/typedefs.h"
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#if !defined(NO_THREADS)
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#include "core/safe_refcount.h"
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#include <thread>
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#endif
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class String;
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class Thread {
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public:
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typedef void (*Callback)(void *p_userdata);
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typedef uint64_t ID;
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enum Priority {
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PRIORITY_LOW,
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PRIORITY_NORMAL,
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PRIORITY_HIGH
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};
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struct Settings {
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Priority priority;
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Settings() { priority = PRIORITY_NORMAL; }
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};
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private:
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#if !defined(NO_THREADS)
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friend class Main;
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static ID main_thread_id;
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static uint64_t _thread_id_hash(const std::thread::id &p_t);
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ID id = _thread_id_hash(std::thread::id());
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std::thread thread;
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static void callback(Thread *p_self, const Settings &p_settings, Thread::Callback p_callback, void *p_userdata);
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static Error (*set_name_func)(const String &);
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static void (*set_priority_func)(Thread::Priority);
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static void (*init_func)();
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static void (*term_func)();
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#endif
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public:
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static void _set_platform_funcs(
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Error (*p_set_name_func)(const String &),
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void (*p_set_priority_func)(Thread::Priority),
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void (*p_init_func)() = nullptr,
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void (*p_term_func)() = nullptr);
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#if !defined(NO_THREADS)
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_FORCE_INLINE_ ID get_id() const { return id; }
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// get the ID of the caller thread
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static ID get_caller_id();
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// get the ID of the main thread
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_FORCE_INLINE_ static ID get_main_id() { return main_thread_id; }
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_FORCE_INLINE_ static bool is_main_thread() { return get_caller_id() == main_thread_id; }
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static Error set_name(const String &p_name);
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void start(Thread::Callback p_callback, void *p_user, const Settings &p_settings = Settings());
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bool is_started() const;
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///< waits until thread is finished, and deallocates it.
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void wait_to_finish();
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~Thread();
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#else
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_FORCE_INLINE_ ID get_id() const { return 0; }
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// get the ID of the caller thread
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_FORCE_INLINE_ static ID get_caller_id() { return 0; }
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// get the ID of the main thread
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_FORCE_INLINE_ static ID get_main_id() { return 0; }
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_FORCE_INLINE_ static bool is_main_thread() { return true; }
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static Error set_name(const String &p_name) { return ERR_UNAVAILABLE; }
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void start(Thread::Callback p_callback, void *p_user, const Settings &p_settings = Settings()) {}
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bool is_started() const { return false; }
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void wait_to_finish() {}
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#endif
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};
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#endif // THREAD_H
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