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#ifndef MBGL_UTIL_UV_DETAIL
#define MBGL_UTIL_UV_DETAIL
#include <mbgl/util/ptr.hpp>
#include <mbgl/util/uv-worker.h>
#include <uv.h>
#include <functional>
#include <cassert>
#include <string>
namespace uv {
class thread {
public:
inline operator uv_thread_t *() { return &t; }
private:
uv_thread_t t;
};
class loop {
public:
inline loop() {
#if UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR <= 10
l = uv_loop_new();
if (l == nullptr) {
#else
l = new uv_loop_t;
if (uv_loop_init(&l) != 0) {
#endif
throw std::runtime_error("failed to initialize loop");
}
}
inline ~loop() {
#if UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR <= 10
uv_loop_delete(l);
#else
uv_loop_close(l);
delete l;
#endif
}
inline uv_loop_t *operator*() { return l; }
private:
uv_loop_t *l = nullptr;
};
class mutex {
public:
inline mutex() {
if (uv_mutex_init(&mtx) != 0) {
throw std::runtime_error("failed to initialize mutex");
}
}
inline ~mutex() { uv_mutex_destroy(&mtx); }
inline void lock() { uv_mutex_lock(&mtx); }
inline void unlock() { uv_mutex_unlock(&mtx); }
private:
uv_mutex_t mtx;
};
class lock {
public:
lock(mutex &mtx_) : mtx(mtx_) { mtx.lock(); }
~lock() { mtx.unlock(); }
private:
mutex &mtx;
};
class rwlock {
public:
inline rwlock() {
if (uv_rwlock_init(&mtx) != 0) {
throw std::runtime_error("failed to initialize read-write lock");
}
}
inline ~rwlock() { uv_rwlock_destroy(&mtx); }
inline void rdlock() { uv_rwlock_rdlock(&mtx); }
inline void wrlock() { uv_rwlock_wrlock(&mtx); }
inline void rdunlock() { uv_rwlock_rdunlock(&mtx); }
inline void wrunlock() { uv_rwlock_wrunlock(&mtx); }
private:
uv_rwlock_t mtx;
};
class readlock {
public:
inline readlock(rwlock &mtx_) : mtx(mtx_) { mtx.rdlock(); }
inline readlock(const std::unique_ptr<rwlock> &mtx_) : mtx(*mtx_) { mtx.rdlock(); }
inline ~readlock() { mtx.rdunlock(); }
private:
rwlock &mtx;
};
class writelock {
public:
inline writelock(rwlock &mtx_) : mtx(mtx_) { mtx.wrlock(); }
inline writelock(const std::unique_ptr<rwlock> &mtx_) : mtx(*mtx_) { mtx.wrlock(); }
inline ~writelock() { mtx.wrunlock(); }
private:
rwlock &mtx;
};
class once {
public:
typedef void (*callback)();
void operator()(void (*callback)(void)) {
uv_once(&o, callback);
}
private:
uv_once_t o = UV_ONCE_INIT;
};
class worker {
public:
inline worker(uv_loop_t *loop, unsigned int count, const char *name = nullptr) : w(new uv_worker_t) {
uv_worker_init(w, loop, count, name);
}
inline ~worker() {
uv_worker_close(w, [](uv_worker_t *worker) {
delete worker;
});
}
inline void add(void *data, uv_worker_cb work_cb, uv_worker_after_cb after_work_cb) {
uv_worker_send(w, data, work_cb, after_work_cb);
}
private:
uv_worker_t *w;
};
template <typename T>
class work {
public:
typedef void (*work_callback)(T &object);
typedef void (*after_work_callback)(T &object);
template<typename... Args>
work(worker &worker, work_callback work_cb_, after_work_callback after_work_cb_, Args&&... args)
: data(std::forward<Args>(args)...),
work_cb(work_cb_),
after_work_cb(after_work_cb_) {
worker.add(this, do_work, after_work);
}
private:
static void do_work(void *data) {
work<T> *w = reinterpret_cast<work<T> *>(data);
w->work_cb(w->data);
}
static void after_work(void *data) {
work<T> *w = reinterpret_cast<work<T> *>(data);
w->after_work_cb(w->data);
delete w;
}
private:
T data;
work_callback work_cb;
after_work_callback after_work_cb;
};
}
#endif
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