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#ifndef MBGL_UTIL_UV_DETAIL
#define MBGL_UTIL_UV_DETAIL
#include <mbgl/util/uv.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <uv.h>
#include <functional>
#include <cassert>
#include <memory>
#include <string>
#if UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR <= 10
// Add thread local storage to libuv API:
// https://github.com/joyent/libuv/commit/5d2434bf71e47802841bad218d521fa254d1ca2d
typedef pthread_key_t uv_key_t;
UV_EXTERN int uv_key_create(uv_key_t* key);
UV_EXTERN void uv_key_delete(uv_key_t* key);
UV_EXTERN void* uv_key_get(uv_key_t* key);
UV_EXTERN void uv_key_set(uv_key_t* key, void* value);
#endif
namespace uv {
template <class T>
void close(std::unique_ptr<T> ptr) {
uv_close(reinterpret_cast<uv_handle_t*>(ptr.release()), [](uv_handle_t* handle) {
delete reinterpret_cast<T*>(handle);
});
}
class loop : public mbgl::util::noncopyable {
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 void run() {
uv_run(l, UV_RUN_DEFAULT);
}
inline uv_loop_t* operator*() {
return l;
}
inline uv_loop_t* get() {
return l;
}
private:
uv_loop_t *l = nullptr;
};
class async : public mbgl::util::noncopyable {
public:
inline async(uv_loop_t* loop, std::function<void ()> fn_)
: a(new uv_async_t)
, fn(fn_)
{
a->data = this;
if (uv_async_init(loop, a.get(), async_cb) != 0) {
throw std::runtime_error("failed to initialize async");
}
}
inline ~async() {
close(std::move(a));
}
inline void send() {
if (uv_async_send(a.get()) != 0) {
throw std::runtime_error("failed to async send");
}
}
inline void ref() {
uv_ref(reinterpret_cast<uv_handle_t*>(a.get()));
}
inline void unref() {
uv_unref(reinterpret_cast<uv_handle_t*>(a.get()));
}
private:
#if UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR <= 10
static void async_cb(uv_async_t* a, int) {
#else
static void async_cb(uv_async_t* a) {
#endif
reinterpret_cast<async*>(a->data)->fn();
}
std::unique_ptr<uv_async_t> a;
std::function<void ()> fn;
};
class mutex : public mbgl::util::noncopyable {
public:
inline mutex() {
if (uv_mutex_init(&mtx) != 0) {
throw std::runtime_error("failed to initialize mutex lock");
}
}
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 rwlock : public mbgl::util::noncopyable {
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;
};
template <class T>
class tls : public mbgl::util::noncopyable {
public:
inline tls() {
if (uv_key_create(&key) != 0) {
throw std::runtime_error("failed to initialize thread local storage key");
}
}
inline ~tls() { uv_key_delete(&key); }
inline T* get() { return reinterpret_cast<T*>(uv_key_get(&key)); }
inline void set(T* val) { uv_key_set(&key, val); }
private:
uv_key_t key;
};
}
#endif
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