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Diffstat (limited to 'nuttx/sched/env_share.c')
-rw-r--r-- | nuttx/sched/env_share.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/nuttx/sched/env_share.c b/nuttx/sched/env_share.c deleted file mode 100644 index 5f37a0219..000000000 --- a/nuttx/sched/env_share.c +++ /dev/null @@ -1,117 +0,0 @@ -/**************************************************************************** - * sched/env_share.c - * - * Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * 3. Neither the name NuttX 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 THE - * COPYRIGHT OWNER OR 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. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#ifndef CONFIG_DISABLE_ENVIRON - -#include <sched.h> -#include <errno.h> - -#include "os_internal.h" -#include "env_internal.h" - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: env_share - * - * Description: - * Increment the reference count on the internal environment structure of - * a task. This is the action that is performed when a new pthread is - * created: The new pthread shares the environment with its parent. - * - * Parameters: - * ptcb The new TCB to receive the shared environment. - * - * Return Value: - * A pointer to a specified TCB's environment structure with an incremented - * reference count. - * - * Assumptions: - * Not called from an interrupt handler. - * - ****************************************************************************/ - -int env_share(FAR _TCB *ptcb) -{ - int ret = OK; - if (!ptcb) - { - ret = -EINVAL; - } - else - { - FAR _TCB *parent = (FAR _TCB*)g_readytorun.head; - environ_t *envp = parent->envp; - - /* Pre-emption must be disabled throughout the following because the - * environment is shared. - */ - - sched_lock(); - - /* Does the parent task have an environment? */ - - if (envp) - { - /* Yes.. increment the reference count on the environment */ - - envp->ev_crefs++; - } - - /* Then share the environment */ - - ptcb->envp = envp; - sched_unlock(); - } - - return ret; -} - -#endif /* CONFIG_DISABLE_ENVIRON */ - - - |