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//
// MCMainThreadWin32.cpp
// mailcore2
//
// Created by Hoa Dinh on 11/11/14.
// Copyright (c) 2014 MailCore. All rights reserved.
//
#include "MCWin32.h"
#include "MCMainThread.h"
#include <stdlib.h>
#include <pthread.h>
#include <libetpan/libetpan.h>
#include "MCDefines.h"
static HWND threadingWindowHandle;
static UINT threadingFiredMessage;
static const LPCWSTR kThreadingWindowClassName = L"ThreadingWindowClass";
static chash * timers = NULL;
struct call_after_delay_data {
void (* function)(void *);
void * context;
UINT_PTR timer_id;
};
struct main_thread_call_data {
void (* function)(void *);
void * context;
struct mailsem * sem;
};
static void main_thread_wrapper(struct main_thread_call_data * data);
static void main_thread_wait_wrapper(struct main_thread_call_data * data);
static void call_after_delay_wrapper(struct call_after_delay_data * data);
LRESULT CALLBACK ThreadingWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if (message == threadingFiredMessage) {
struct main_thread_call_data * data = (struct main_thread_call_data *) wParam;
if (data->sem != NULL) {
main_thread_wait_wrapper(data);
}
else {
main_thread_wrapper(data);
}
return 0;
}
else if (message == WM_TIMER) {
UINT_PTR timer_id = wParam;
chashdatum key;
chashdatum value;
key.data = &timer_id;
key.len = sizeof(timer_id);
chash_get(timers, &key, &value);
struct call_after_delay_data * data = (struct call_after_delay_data *) value.data;
call_after_delay_wrapper(data);
return 0;
}
else {
return DefWindowProc(hWnd, message, wParam, lParam);
}
}
static void main_thread_wrapper(struct main_thread_call_data * data)
{
data->function(data->context);
free(data);
}
void mailcore::callOnMainThread(void (* function)(void *), void * context)
{
struct main_thread_call_data * data = (struct main_thread_call_data *) malloc(sizeof(* data));
data->function = function;
data->context = context;
data->sem = NULL;
PostMessage(threadingWindowHandle, threadingFiredMessage, (WPARAM) data, 0);
}
static void main_thread_wait_wrapper(struct main_thread_call_data * data)
{
data->function(data->context);
mailsem_up(data->sem);
}
void mailcore::callOnMainThreadAndWait(void (* function)(void *), void * context)
{
struct main_thread_call_data * data = (struct main_thread_call_data *) malloc(sizeof(* data));
data->function = function;
data->context = context;
data->sem = mailsem_new();
PostMessage(threadingWindowHandle, threadingFiredMessage, (WPARAM) data, 0);
// Wait.
mailsem_down(data->sem);
mailsem_free(data->sem);
free(data);
}
static void call_after_delay_wrapper(struct call_after_delay_data * data)
{
data->function(data->context);
KillTimer(threadingWindowHandle, data->timer_id);
chashdatum key;
key.data = &data->timer_id;
key.len = sizeof(data->timer_id);
chash_delete(timers, &key, NULL);
free(data);
}
static uint64_t generate_timer_id()
{
static uint64_t uniqueTimerID = 1;
return uniqueTimerID++;
}
void * mailcore::callAfterDelay(void (* function)(void *), void * context, double time)
{
struct call_after_delay_data * data = (struct call_after_delay_data *) malloc(sizeof(* data));
data->function = function;
data->context = context;
UINT_PTR timer_id = (UINT_PTR) generate_timer_id();
data->timer_id = SetTimer(threadingWindowHandle, timer_id, (int)(time * 1000), NULL);
chashdatum key;
chashdatum value;
key.data = &data->timer_id;
key.len = sizeof(data->timer_id);
value.data = data;
value.len = 0;
chash_set(timers, &key, &value, NULL);
return data;
}
void mailcore::cancelDelayedCall(void * delayedCall)
{
struct call_after_delay_data * data = (struct call_after_delay_data *) delayedCall;
KillTimer(threadingWindowHandle, data->timer_id);
chashdatum key;
key.data = &data->timer_id;
key.len = sizeof(data->timer_id);
chash_delete(timers, &key, NULL);
free(data);
}
INITIALIZE(MainThreadWin32)
{
WNDCLASSW wcex;
memset(&wcex, 0, sizeof(wcex));
wcex.lpfnWndProc = ThreadingWindowWndProc;
wcex.lpszClassName = kThreadingWindowClassName;
RegisterClassW(&wcex);
threadingWindowHandle = CreateWindowW(kThreadingWindowClassName, 0, 0,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, HWND_MESSAGE, 0, 0, 0);
threadingFiredMessage = RegisterWindowMessageW(L"com.libmailcore.mailcore2.MainThreadFired");
timers = chash_new(CHASH_DEFAULTSIZE, CHASH_COPYKEY);
}
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