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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>
// XXX: uv.h will include <bits/termios.h> that will
// polute the namespace by defining "B0" which
// will conflict with boost macros.
#ifdef B0
#undef B0
#endif
#if UV_VERSION_MAJOR == 0 && UV_VERSION_MINOR <= 10
#define UV_ASYNC_PARAMS(handle) uv_async_t *handle, int
#define UV_TIMER_PARAMS(timer) uv_timer_t *timer, int
#else
#define UV_ASYNC_PARAMS(handle) uv_async_t *handle
#define UV_TIMER_PARAMS(timer) uv_timer_t *timer
#endif
#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 {
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;
};
template <class T>
class handle : public mbgl::util::noncopyable {
public:
inline handle() : t(reinterpret_cast<uv_handle_t*>(new T)) {
t->data = this;
}
inline ~handle() {
uv_close(t.release(), [](uv_handle_t* h) {
delete reinterpret_cast<T*>(h);
});
}
inline void ref() {
uv_ref(t.get());
}
inline void unref() {
uv_unref(t.get());
}
inline T* get() {
return reinterpret_cast<T*>(t.get());
}
private:
std::unique_ptr<uv_handle_t> t;
};
class async : public handle<uv_async_t> {
public:
inline async(uv_loop_t* loop, std::function<void ()> fn_)
: fn(fn_) {
if (uv_async_init(loop, get(), async_cb) != 0) {
throw std::runtime_error("failed to initialize async");
}
}
inline void send() {
if (uv_async_send(get()) != 0) {
throw std::runtime_error("failed to async send");
}
}
private:
static void async_cb(UV_ASYNC_PARAMS(handle)) {
reinterpret_cast<async*>(handle->data)->fn();
}
std::function<void ()> fn;
};
class timer : public handle<uv_timer_t> {
public:
inline timer(uv_loop_t* loop) {
if (uv_timer_init(loop, get()) != 0) {
throw std::runtime_error("failed to initialize timer");
}
}
inline void start(uint64_t timeout, uint64_t repeat, std::function<void ()> fn_) {
fn = fn_;
if (uv_timer_start(get(), timer_cb, timeout, repeat) != 0) {
throw std::runtime_error("failed to start timer");
}
}
inline void stop() {
fn = nullptr;
if (uv_timer_stop(get()) != 0) {
throw std::runtime_error("failed to stop timer");
}
}
private:
static void timer_cb(UV_TIMER_PARAMS(t)) {
reinterpret_cast<timer*>(t->data)->fn();
}
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(T* val) {
tls();
set(val);
}
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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