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_local.h | 107 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 mysql/my_thread_local.h

(limited to 'mysql/my_thread_local.h')

diff --git a/mysql/my_thread_local.h b/mysql/my_thread_local.h
new file mode 100644
index 0000000..fabd71a
--- /dev/null
+++ b/mysql/my_thread_local.h
@@ -0,0 +1,107 @@
+/* Copyright (c) 2000, 2015, 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 02110-1301, USA */
+
+#ifndef MY_THREAD_LOCAL_INCLUDED
+#define MY_THREAD_LOCAL_INCLUDED
+
+#ifndef _WIN32
+#include <pthread.h>
+#endif
+
+struct _db_code_state_;
+typedef uint32 my_thread_id;
+
+C_MODE_START
+
+#ifdef _WIN32
+typedef DWORD thread_local_key_t;
+#else
+typedef pthread_key_t thread_local_key_t;
+#endif
+
+static inline int my_create_thread_local_key(thread_local_key_t *key,
+                                             void (*destructor)(void *))
+{
+#ifdef _WIN32
+  *key= TlsAlloc();
+  return (*key == TLS_OUT_OF_INDEXES);
+#else
+  return pthread_key_create(key, destructor);
+#endif
+}
+
+static inline int my_delete_thread_local_key(thread_local_key_t key)
+{
+#ifdef _WIN32
+  return !TlsFree(key);
+#else
+  return pthread_key_delete(key);
+#endif
+}
+
+static inline void* my_get_thread_local(thread_local_key_t key)
+{
+#ifdef _WIN32
+  return TlsGetValue(key);
+#else
+  return pthread_getspecific(key);
+#endif
+}
+
+static inline int my_set_thread_local(thread_local_key_t key,
+                                      void *value)
+{
+#ifdef _WIN32
+  return !TlsSetValue(key, value);
+#else
+  return pthread_setspecific(key, value);
+#endif
+}
+
+/**
+  Retrieve the MySQL thread-local storage variant of errno.
+*/
+int my_errno();
+
+/**
+  Set the MySQL thread-local storage variant of errno.
+*/
+void set_my_errno(int my_errno);
+
+#ifdef _WIN32
+/*
+  thr_winerr is used for returning the original OS error-code in Windows,
+  my_osmaperr() returns EINVAL for all unknown Windows errors, hence we
+  preserve the original Windows Error code in thr_winerr.
+*/
+int thr_winerr();
+
+void set_thr_winerr(int winerr);
+
+#endif
+
+#ifndef DBUG_OFF
+/* Return pointer to DBUG for holding current state */
+struct _db_code_state_ **my_thread_var_dbug();
+
+my_thread_id my_thread_var_id();
+
+void set_my_thread_var_id(my_thread_id id);
+
+#endif
+
+C_MODE_END
+
+#endif // MY_THREAD_LOCAL_INCLUDED
-- 
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