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pthread_kill.c
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pthread_kill.c
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/*
* pthread_kill.c
*
* Description:
* This translation unit implements the pthread_kill routine.
*
* --------------------------------------------------------------------------
*
* Pthreads4w - POSIX Threads for Windows
* Copyright 1998 John E. Bossom
* Copyright 1999-2018, Pthreads4w contributors
*
* Homepage: https://sourceforge.net/projects/pthreads4w/
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
*
* https://sourceforge.net/p/pthreads4w/wiki/Contributors/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "pthread.h"
#include "implement.h"
/*
* Not needed yet, but defining it should indicate clashes with build target
* environment that should be fixed.
*/
#if !defined(WINCE)
# include <signal.h>
#endif
int
pthread_kill (pthread_t thread, int sig)
/*
* ------------------------------------------------------
* DOCPUBLIC
* This function requests that a signal be delivered to the
* specified thread. If sig is zero, error checking is
* performed but no signal is actually sent such that this
* function can be used to check for a valid thread ID.
*
* PARAMETERS
* thread reference to an instances of pthread_t
* sig signal. Currently only a value of 0 is supported.
*
*
* DESCRIPTION
* This function requests that a signal be delivered to the
* specified thread. If sig is zero, error checking is
* performed but no signal is actually sent such that this
* function can be used to check for a valid thread ID.
*
* RESULTS
* ESRCH the thread is not a valid thread ID,
* EINVAL the value of the signal is invalid
* or unsupported.
* 0 the signal was successfully sent.
*
* ------------------------------------------------------
*/
{
int result = 0;
if (0 != sig)
{
/*
* Currently does not support any signals.
*/
result = EINVAL;
}
else
{
__ptw32_mcs_local_node_t node;
__ptw32_thread_t * tp;
__ptw32_mcs_lock_acquire(&__ptw32_thread_reuse_lock, &node);
tp = (__ptw32_thread_t *) thread.p;
if (NULL == tp
|| thread.x != tp->ptHandle.x
|| tp->state < PThreadStateRunning)
{
result = ESRCH;
}
__ptw32_mcs_lock_release(&node);
}
return result;
} /* pthread_kill */