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tlstest-main.cpp
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tlstest-main.cpp
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/*
* Copyright (c) 2018 Martin Storsjo
*
* This file is part of llvm-mingw.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <process.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
HANDLE event1, event2, event3;
void (*func)(void);
class Hello {
public:
Hello(const char* s) {
str = s;
thread = GetCurrentThreadId();
fprintf(stderr, "%s ctor on thread %d\n", str, thread);
}
~Hello() {
fprintf(stderr, "%s dtor from thread %d, now on %d\n", str, thread, (int) GetCurrentThreadId());
}
const char* str;
int thread;
};
unsigned __stdcall threadfunc(void *arg) {
HANDLE event = (HANDLE) arg;
int threadId = GetCurrentThreadId();
fprintf(stderr, "threadfunc thread %d\n", threadId);
static thread_local Hello main_h("main local tls");
SetEvent(event3);
WaitForSingleObject(event, INFINITE);
fprintf(stderr, "thread %d calling func\n", threadId);
if (func)
func();
SetEvent(event3);
WaitForSingleObject(event, INFINITE);
fprintf(stderr, "thread %d finishing\n", threadId);
return 0;
}
static Hello main_h("main global");
static void atexit_func(void) {
fprintf(stderr, "main atexit_func\n");
}
int main(int argc, char* argv[]) {
atexit(atexit_func);
fprintf(stderr, "main\n");
event1 = CreateEvent(NULL, FALSE, FALSE, NULL);
event2 = CreateEvent(NULL, FALSE, FALSE, NULL);
event3 = CreateEvent(NULL, FALSE, FALSE, NULL);
fprintf(stderr, "main, starting thread1\n");
HANDLE thread1 = (HANDLE)_beginthreadex(NULL, 0, threadfunc, event1, 0, NULL);
WaitForSingleObject(event3, INFINITE);
fprintf(stderr, "main, thread1 started\n");
fprintf(stderr, "LoadLibrary tlstest-lib.dll\n");
HMODULE h = LoadLibrary("tlstest-lib.dll");
fprintf(stderr, "LoadLibrary tlstest-lib.dll ret %p\n", h);
if (!h) {
fprintf(stderr, "Unable to load tlstest-lib.dll\n");
return 1;
}
func = (void (*)(void)) GetProcAddress(h, "func");
fprintf(stderr, "main, got func address, calling it\n");
if (func)
func();
fprintf(stderr, "main, starting thread2\n");
HANDLE thread2 = (HANDLE)_beginthreadex(NULL, 0, threadfunc, event2, 0, NULL);
WaitForSingleObject(event3, INFINITE);
fprintf(stderr, "main, thread2 started\n");
SetEvent(event1);
WaitForSingleObject(event3, INFINITE);
fprintf(stderr, "main, thread1 work done\n");
SetEvent(event2);
WaitForSingleObject(event3, INFINITE);
fprintf(stderr, "main, thread2 work done\n");
SetEvent(event1);
WaitForSingleObject(thread1, INFINITE);
fprintf(stderr, "main, thread1 joined\n");
fprintf(stderr, "FreeLibrary\n");
FreeLibrary(h);
fprintf(stderr, "FreeLibrary done\n");
SetEvent(event2);
WaitForSingleObject(thread2, INFINITE);
fprintf(stderr, "main, thread2 joined\n");
static thread_local Hello main_h("main local tls");
atexit(atexit_func);
fprintf(stderr, "main done\n");
return 0;
}