From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/my_thread.h | 192 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 192 insertions(+)
 create mode 100644 mysql/my_thread.h

(limited to 'mysql/my_thread.h')

diff --git a/mysql/my_thread.h b/mysql/my_thread.h
new file mode 100644
index 0000000..bd65e06
--- /dev/null
+++ b/mysql/my_thread.h
@@ -0,0 +1,192 @@
+/* Copyright (c) 2000, 2016, 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 Street, Fifth Floor, Boston, MA 02110-1301, USA */
+
+/* Defines to make different thread packages compatible */
+
+#ifndef MY_THREAD_INCLUDED
+#define MY_THREAD_INCLUDED
+
+#include "my_global.h"              /* my_bool */
+
+#if !defined(_WIN32)
+#include <pthread.h>
+#endif
+
+#ifndef ETIME
+#define ETIME ETIMEDOUT             /* For FreeBSD */
+#endif
+
+#ifndef ETIMEDOUT
+#define ETIMEDOUT 145		    /* Win32 doesn't have this */
+#endif
+
+/*
+  MySQL can survive with 32K, but some glibc libraries require > 128K stack
+  To resolve hostnames. Also recursive stored procedures needs stack.
+*/
+#if defined(__sparc) && (defined(__SUNPRO_CC) || defined(__SUNPRO_C))
+#define STACK_MULTIPLIER 2UL
+#else
+#define STACK_MULTIPLIER 1UL
+#endif
+
+#if SIZEOF_CHARP > 4
+#define DEFAULT_THREAD_STACK	(STACK_MULTIPLIER * 256UL * 1024UL)
+#else
+#define DEFAULT_THREAD_STACK	(STACK_MULTIPLIER * 192UL * 1024UL)
+#endif
+
+#ifdef  __cplusplus
+#define EXTERNC extern "C"
+#else
+#define EXTERNC
+#endif
+
+C_MODE_START
+
+#ifdef _WIN32
+typedef volatile LONG    my_thread_once_t;
+typedef DWORD            my_thread_t;
+typedef struct thread_attr
+{
+  DWORD dwStackSize;
+  int detachstate;
+} my_thread_attr_t;
+#define MY_THREAD_CREATE_JOINABLE 0
+#define MY_THREAD_CREATE_DETACHED 1
+typedef void * (__cdecl *my_start_routine)(void *);
+#define MY_THREAD_ONCE_INIT       0
+#define MY_THREAD_ONCE_INPROGRESS 1
+#define MY_THREAD_ONCE_DONE       2
+#else
+typedef pthread_once_t   my_thread_once_t;
+typedef pthread_t        my_thread_t;
+typedef pthread_attr_t   my_thread_attr_t;
+#define MY_THREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
+#define MY_THREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
+typedef void *(* my_start_routine)(void *);
+#define MY_THREAD_ONCE_INIT       PTHREAD_ONCE_INIT
+#endif
+
+typedef struct st_my_thread_handle
+{
+  my_thread_t thread;
+#ifdef _WIN32
+  HANDLE handle;
+#endif
+} my_thread_handle;
+
+int my_thread_once(my_thread_once_t *once_control, void (*init_routine)(void));
+
+static inline my_thread_t my_thread_self()
+{
+#ifdef _WIN32
+  return GetCurrentThreadId();
+#else
+  return pthread_self();
+#endif
+}
+
+static inline int my_thread_equal(my_thread_t t1, my_thread_t t2)
+{
+#ifdef _WIN32
+  return t1 == t2;
+#else
+  return pthread_equal(t1, t2);
+#endif
+}
+
+static inline int my_thread_attr_init(my_thread_attr_t *attr)
+{
+#ifdef _WIN32
+  attr->dwStackSize= 0;
+  /* Set to joinable by default to match Linux */
+  attr->detachstate= MY_THREAD_CREATE_JOINABLE;
+  return 0;
+#else
+  return pthread_attr_init(attr);
+#endif
+}
+
+static inline int my_thread_attr_destroy(my_thread_attr_t *attr)
+{
+#ifdef _WIN32
+  attr->dwStackSize= 0;
+  /* Set to joinable by default to match Linux */
+  attr->detachstate= MY_THREAD_CREATE_JOINABLE;
+  return 0;
+#else
+  return pthread_attr_destroy(attr);
+#endif
+}
+
+static inline int my_thread_attr_setstacksize(my_thread_attr_t *attr,
+                                              size_t stacksize)
+{
+#ifdef _WIN32
+  attr->dwStackSize= (DWORD)stacksize;
+  return 0;
+#else
+  return pthread_attr_setstacksize(attr, stacksize);
+#endif
+}
+
+static inline int my_thread_attr_setdetachstate(my_thread_attr_t *attr,
+                                                int detachstate)
+{
+#ifdef _WIN32
+  attr->detachstate= detachstate;
+  return 0;
+#else
+  return pthread_attr_setdetachstate(attr, detachstate);
+#endif
+}
+
+static inline int my_thread_attr_getstacksize(my_thread_attr_t *attr,
+                                              size_t *stacksize)
+{
+#ifdef _WIN32
+  *stacksize= (size_t)attr->dwStackSize;
+  return 0;
+#else
+  return pthread_attr_getstacksize(attr, stacksize);
+#endif
+}
+
+static inline void my_thread_yield()
+{
+#ifdef _WIN32
+  SwitchToThread();
+#else
+  sched_yield();
+#endif
+}
+
+int my_thread_create(my_thread_handle *thread, const my_thread_attr_t *attr,
+                     my_start_routine func, void *arg);
+int my_thread_join(my_thread_handle *thread, void **value_ptr);
+int my_thread_cancel(my_thread_handle *thread);
+void my_thread_exit(void *value_ptr);
+
+
+extern my_bool my_thread_global_init();
+extern void my_thread_global_reinit();
+extern void my_thread_global_end();
+extern my_bool my_thread_init();
+extern void my_thread_end();
+
+C_MODE_END
+
+#endif /* MY_THREAD_INCLUDED */
-- 
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