Clone of mbed rtos 2 for easy accessibility.
Fork of mbed-rtos by
rtx/TARGET_CORTEX_M/rt_OsEventObserver.c
- Committer:
- Kojto
- Date:
- 2017-07-04
- Revision:
- 125:5713cbbdb706
- Parent:
- 118:6635230e06ba
File content as of revision 125:5713cbbdb706:
/*---------------------------------------------------------------------------- * CMSIS-RTOS - RTX *---------------------------------------------------------------------------- * Name: rt_OsEventObserver.c * Purpose: OS Event Callbacks for CMSIS RTOS * Rev.: VX.XX *---------------------------------------------------------------------------- * * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH * All rights reserved. * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - Neither the name of ARM nor the names of its contributors may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. *---------------------------------------------------------------------------*/ #include "rt_OsEventObserver.h" /* * _____ _____ ____ __ _____ * | ___|_ _\ \/ / \/ | ____| * | |_ | | \ /| |\/| | _| * | _| | | / \| | | | |___ * |_| |___/_/\_\_| |_|_____| * * FIXME: * The osEventObs variable must be in protected memory. If not every box * and box 0 can modify osEventObs to point to any handler to run code * privileged. This issue is tracked at * <https://github.com/ARMmbed/uvisor/issues/235>. */ const OsEventObserver *osEventObs; void osRegisterForOsEvents(const OsEventObserver *observer) { static uint8_t has_been_called = 0; if (has_been_called) { return; } has_been_called = 1; osEventObs = observer; }