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// thread.c |
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// |
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/**************************************************************************** |
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liblscp - LinuxSampler Control Protocol API |
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Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved. |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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|
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*****************************************************************************/ |
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|
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#include "lscp/thread.h" |
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|
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|
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//------------------------------------------------------------------------- |
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// Threads. |
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|
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struct _lscp_thread_t { |
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#if defined(WIN32) |
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HANDLE hThread; |
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DWORD dwThreadID; |
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#else |
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pthread_t pthread; |
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#endif |
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lscp_thread_proc_t pfnProc; |
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void *pvData; |
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int iDetach; |
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}; |
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|
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|
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#if defined(WIN32) |
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static DWORD WINAPI _lscp_thread_start ( LPVOID pvThread ) |
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#else |
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static void *_lscp_thread_start ( void *pvThread ) |
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#endif |
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{ |
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lscp_thread_t *pThread = (lscp_thread_t *) pvThread; |
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if (pThread) { |
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// fprintf(stderr, "_lscp_thread_start: pThread=%p started.\n", pThread); |
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pThread->pfnProc(pThread->pvData); |
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// fprintf(stderr, "_lscp_thread_start: pThread=%p terminated.\n", pThread); |
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if (pThread->iDetach) |
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free(pThread); |
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} |
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#if defined(WIN32) |
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return 0; |
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#else |
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return NULL; |
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#endif |
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} |
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|
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lscp_thread_t *lscp_thread_create ( lscp_thread_proc_t pfnProc, void *pvData, int iDetach ) |
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{ |
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lscp_thread_t *pThread; |
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#if !defined(WIN32) |
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pthread_attr_t attr; |
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#endif |
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|
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if (pfnProc == NULL) { |
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fprintf(stderr, "lcsp_thread_create: Invalid thread function.\n"); |
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return NULL; |
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} |
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|
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pThread = (lscp_thread_t *) malloc(sizeof(lscp_thread_t)); |
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if (pThread == NULL) { |
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fprintf(stderr, "lcsp_thread_create: Out of memory.\n"); |
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return NULL; |
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} |
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memset(pThread, 0, sizeof(lscp_thread_t)); |
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|
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pThread->pvData = pvData; |
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pThread->pfnProc = pfnProc; |
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pThread->iDetach = iDetach; |
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|
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// fprintf(stderr, "lscp_thread_create: pThread=%p.\n", pThread); |
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|
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#if defined(WIN32) |
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pThread->hThread = CreateThread(NULL, 0, _lscp_thread_start, (LPVOID) pThread, 0, &(pThread->dwThreadID)); |
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if (pThread->hThread == NULL) { |
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fprintf(stderr, "lcsp_thread_create: Failed to create thread.\n"); |
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free(pThread); |
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return NULL; |
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} |
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#else |
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pthread_attr_init(&attr); |
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if (iDetach) |
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); |
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if (pthread_create(&pThread->pthread, &attr, _lscp_thread_start, pThread)) { |
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fprintf(stderr, "lcsp_thread_create: Failed to create thread.\n"); |
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free(pThread); |
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return NULL; |
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} |
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#endif |
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|
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return pThread; |
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} |
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|
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|
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lscp_status_t lscp_thread_join( lscp_thread_t *pThread ) |
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{ |
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lscp_status_t ret = LSCP_FAILED; |
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|
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if (pThread == NULL) |
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return ret; |
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|
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// fprintf(stderr, "lscp_thread_join: pThread=%p.\n", pThread); |
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|
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#if defined(WIN32) |
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if (pThread->hThread && WaitForSingleObject(pThread->hThread, INFINITE) == WAIT_OBJECT_0) { |
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pThread->hThread = NULL; |
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ret = LSCP_OK; |
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} |
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#else |
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if (pThread->pthread && pthread_join(pThread->pthread, NULL) == 0) { |
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pThread->pthread = 0; |
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ret = LSCP_OK; |
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} |
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#endif |
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|
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return ret; |
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} |
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|
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|
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lscp_status_t lscp_thread_cancel ( lscp_thread_t *pThread ) |
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{ |
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lscp_status_t ret = LSCP_FAILED; |
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|
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if (pThread == NULL) |
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return ret; |
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|
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// fprintf(stderr, "lscp_thread_cancel: pThread=%p.\n", pThread); |
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|
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#if defined(WIN32) |
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if (pThread->hThread) { // Should we TerminateThread(pThread->hThread, 0) ? |
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/* pThread->hThread = NULL; */ |
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ret = LSCP_OK; |
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} |
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#else |
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if (pThread->pthread && pthread_cancel(pThread->pthread) == 0) { |
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pThread->pthread = 0; |
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ret = LSCP_OK; |
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} |
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#endif |
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|
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return ret; |
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} |
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|
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|
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lscp_status_t lscp_thread_destroy ( lscp_thread_t *pThread ) |
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{ |
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lscp_status_t ret = lscp_thread_cancel(pThread); |
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|
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if (ret == LSCP_OK) |
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ret = lscp_thread_join(pThread); |
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|
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// fprintf(stderr, "lscp_thread_destroy: pThread=%p.\n", pThread); |
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|
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if (ret == LSCP_OK) |
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free(pThread); |
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|
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return ret; |
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} |
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|
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|
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// end of thread.c |