From 3f619478f796eddbba6e39502fe941b285dd97b1 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 4 May 2024 20:00:34 +0200
Subject: Adding upstream version 1:10.11.6.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 mysys/my_winthread.c | 179 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100644 mysys/my_winthread.c

(limited to 'mysys/my_winthread.c')

diff --git a/mysys/my_winthread.c b/mysys/my_winthread.c
new file mode 100644
index 00000000..b74804fb
--- /dev/null
+++ b/mysys/my_winthread.c
@@ -0,0 +1,179 @@
+/* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+/*****************************************************************************
+** Simulation of posix threads calls for Windows
+*****************************************************************************/
+#if defined (_WIN32)
+/* SAFE_MUTEX will not work until the thread structure is up to date */
+
+#undef SAFE_MUTEX
+#include "mysys_priv.h"
+#include <process.h>
+#include <signal.h>
+
+struct thread_start_parameter
+{
+  pthread_handler func;
+  void *arg;
+};
+
+/**
+   Adapter to @c pthread_mutex_trylock()
+
+   @retval 0      Mutex was acquired
+   @retval EBUSY  Mutex was already locked by a thread
+ */
+int
+win_pthread_mutex_trylock(pthread_mutex_t *mutex)
+{
+  if (TryEnterCriticalSection(mutex))
+  {
+    /* Don't allow recursive lock */
+    if (mutex->RecursionCount > 1){
+      LeaveCriticalSection(mutex);
+      return EBUSY;
+    }
+    return 0;
+  }
+  return EBUSY;
+}
+
+static unsigned int __stdcall pthread_start(void *p)
+{
+  struct thread_start_parameter *par= (struct thread_start_parameter *)p;
+  pthread_handler func= par->func;
+  void *arg= par->arg;
+  free(p);
+  (*func)(arg);
+  return 0;
+}
+
+
+int pthread_create(pthread_t *thread_id, const pthread_attr_t *attr,
+                   pthread_handler func, void *param)
+{
+  uintptr_t handle;
+  struct thread_start_parameter *par;
+  unsigned int  stack_size;
+  int error_no;
+  DBUG_ENTER("pthread_create");
+
+  par= (struct thread_start_parameter *)malloc(sizeof(*par));
+  if (!par)
+   goto error_return;
+
+  par->func= func;
+  par->arg= param;
+  stack_size= attr?attr->dwStackSize:0;
+
+  handle= _beginthreadex(NULL, stack_size , pthread_start, par, 0, (uint *)thread_id);
+  if (!handle)
+    goto error_return;
+  DBUG_PRINT("info", ("thread id=%lu",*thread_id));
+
+  /* Do not need thread handle, close it */
+  CloseHandle((HANDLE)handle);
+  DBUG_RETURN(0);
+
+error_return:
+  error_no= errno;
+  DBUG_PRINT("error",
+         ("Can't create thread to handle request (error %d)",error_no));
+  DBUG_RETURN(error_no);
+}
+
+
+void pthread_exit(void *a)
+{
+  _endthreadex(0);
+}
+
+int pthread_join(pthread_t thread, void **value_ptr)
+{
+  DWORD  ret;
+  HANDLE handle;
+
+  handle= OpenThread(SYNCHRONIZE, FALSE, thread);
+  if (!handle)
+  {
+    errno= EINVAL;
+    goto error_return;
+  }
+
+  ret= WaitForSingleObject(handle, INFINITE);
+
+  if(ret != WAIT_OBJECT_0)
+  {
+    errno= EINVAL;
+    goto error_return;
+  }
+
+  if (!GetExitCodeThread(handle, &ret))
+  {
+    errno= EINVAL;
+    goto error_return;
+  }
+
+  if (value_ptr)
+    *value_ptr= (void *)(size_t)ret;
+
+  CloseHandle(handle);
+  return 0;
+
+error_return:
+  if(handle)
+    CloseHandle(handle);
+  return -1;
+}
+
+int pthread_cancel(pthread_t thread)
+{
+
+  HANDLE handle= 0;
+  BOOL ok= FALSE;
+
+  handle= OpenThread(THREAD_TERMINATE, FALSE, thread);
+  if (handle)
+  {
+     ok= TerminateThread(handle,0);
+     CloseHandle(handle);
+  }
+  if (ok)
+    return 0;
+
+  errno= EINVAL;
+  return -1;
+}
+
+
+
+/*
+ One time initialization.
+*/
+
+static BOOL CALLBACK init_once_callback(my_pthread_once_t *once_control, PVOID param, PVOID *context)
+{
+  typedef void(*void_f)(void);
+  ((void_f)param)();
+  return TRUE;
+}
+
+int my_pthread_once(my_pthread_once_t *once_control,  void (*func)(void))
+{
+  InitOnceExecuteOnce(once_control, init_once_callback, func, NULL);
+  return 0;
+}
+#endif
-- 
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