Constantine Sapuntzakis provided initial thread abstraction layer

3 files changed, 184 insertions, 2 deletions

diff --git a/lib/Makefile.inc b/lib/Makefile.inc
index b7b10d3e1..90d6fec81 100644
--- a/lib/Makefile.inc
+++ b/lib/Makefile.inc
@@ -11,7 +11,7 @@ CSOURCES = file.c timeval.c base64.c hostip.c progress.c formdata.c	\
   inet_ntop.c parsedate.c select.c gtls.c sslgen.c tftp.c splay.c	\
   strdup.c socks.c ssh.c nss.c qssl.c rawstr.c curl_addrinfo.c          \
   socks_gssapi.c socks_sspi.c curl_sspi.c slist.c nonblock.c		\
-  curl_memrchr.c imap.c pop3.c smtp.c pingpong.c rtsp.c
+  curl_memrchr.c imap.c pop3.c smtp.c pingpong.c rtsp.c curl_threads.c
 
 HHEADERS = arpa_telnet.h netrc.h file.h timeval.h qssl.h hostip.h	\
   progress.h formdata.h cookie.h http.h sendf.h ftp.h url.h dict.h	\
@@ -23,4 +23,4 @@ HHEADERS = arpa_telnet.h netrc.h file.h timeval.h qssl.h hostip.h	\
   transfer.h select.h easyif.h multiif.h parsedate.h sslgen.h gtls.h	\
   tftp.h sockaddr.h splay.h strdup.h setup_once.h socks.h ssh.h nssg.h	\
   curl_base64.h rawstr.h curl_addrinfo.h curl_sspi.h slist.h nonblock.h	\
-  curl_memrchr.h imap.h pop3.h smtp.h pingpong.h rtsp.h
+  curl_memrchr.h imap.h pop3.h smtp.h pingpong.h rtsp.h curl_threads.h
diff --git a/lib/curl_threads.c b/lib/curl_threads.c
new file mode 100644
index 000000000..7c87c19a4
--- /dev/null
+++ b/lib/curl_threads.c
@@ -0,0 +1,124 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+#include "setup.h"
+
+#if defined(USE_THREADS_POSIX)
+#  ifdef HAVE_PTHREAD_H
+#    include <pthread.h>
+#  endif
+#elif defined(USE_THREADS_WIN32)
+#  ifdef HAVE_PROCESS_H
+#    include <process.h>
+#  endif
+#endif
+
+#include "curl_threads.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+#if defined(USE_THREADS_POSIX)
+
+struct curl_actual_call {
+  unsigned int (*func)(void *);
+  void *arg;  
+};
+
+static void *curl_thread_create_thunk(void *arg)
+{
+  struct curl_actual_call * ac = arg;
+  unsigned int (*func)(void *) = ac->func;
+  void *real_arg = ac->arg;
+
+  free(ac);
+
+  (*func)(real_arg);
+
+  return 0;
+}
+
+curl_thread_t Curl_thread_create(unsigned int (*func) (void*), void *arg)
+{
+  curl_thread_t t;
+  struct curl_actual_call *ac = malloc(sizeof(struct curl_actual_call));
+  if(!ac)
+    return curl_thread_t_null;
+
+  ac->func = func;
+  ac->arg = arg;
+
+  if(pthread_create(&t, NULL, curl_thread_create_thunk, ac) != 0) {
+    free(ac);
+    return curl_thread_t_null;
+  }
+
+  return t;
+}
+
+void Curl_thread_destroy(curl_thread_t hnd)
+{
+  if(hnd != curl_thread_t_null)
+    pthread_detach(hnd);
+}
+
+int Curl_thread_join(curl_thread_t *hnd)
+{
+  int ret = (pthread_join(*hnd, NULL) == 0);
+
+  *hnd = curl_thread_t_null;
+
+  return ret;
+}
+
+#elif defined(USE_THREADS_WIN32)
+
+curl_thread_t Curl_thread_create(unsigned int (CURL_STDCALL *func) (void*), void *arg)
+{
+#ifdef _WIN32_WCE
+  return CreateThread(NULL, 0, func, arg, 0, NULL);
+#else
+  return (curl_thread_t)_beginthreadex(NULL, 0, func, arg, 0, NULL);
+#endif
+}
+
+void Curl_thread_destroy(curl_thread_t hnd)
+{
+  CloseHandle(hnd);
+}
+
+int Curl_thread_join(curl_thread_t *hnd)
+{
+  int ret = (WaitForSingleObject(*hnd, INFINITE) == WAIT_OBJECT_0);
+
+  Curl_thread_destroy(*hnd);
+
+  *hnd = curl_thread_t_null;
+
+  return ret;
+}
+
+#endif /* USE_THREADS_* */
diff --git a/lib/curl_threads.h b/lib/curl_threads.h
new file mode 100644
index 000000000..4d13f2c58
--- /dev/null
+++ b/lib/curl_threads.h
@@ -0,0 +1,58 @@
+#ifndef HEADER_CURL_THREADS_H
+#define HEADER_CURL_THREADS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+#include "setup.h"
+
+#if defined(USE_THREADS_POSIX)
+#  define CURL_STDCALL
+#  define curl_mutex_t           pthread_mutex_t
+#  define curl_thread_t          pthread_t
+#  define curl_thread_t_null     (pthread_t)0
+#  define Curl_mutex_init(m)     pthread_mutex_init(m, NULL)
+#  define Curl_mutex_acquire(m)  pthread_mutex_lock(m)
+#  define Curl_mutex_release(m)  pthread_mutex_unlock(m)
+#  define Curl_mutex_destroy(m)  pthread_mutex_destroy(m)
+#elif defined(USE_THREADS_WIN32)
+#  define CURL_STDCALL           __stdcall
+#  define curl_mutex_t           CRITICAL_SECTION
+#  define curl_thread_t          HANDLE
+#  define curl_thread_t_null     (HANDLE)0
+#  define Curl_mutex_init(m)     InitializeCriticalSection(m)
+#  define Curl_mutex_acquire(m)  EnterCriticalSection(m)
+#  define Curl_mutex_release(m)  LeaveCriticalSection(m)
+#  define Curl_mutex_destroy(m)  DeleteCriticalSection(m)
+#endif
+
+#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
+
+curl_thread_t Curl_thread_create(unsigned int (CURL_STDCALL *func) (void*),
+                                 void *arg);
+
+void Curl_thread_destroy(curl_thread_t hnd);
+
+int Curl_thread_join(curl_thread_t *hnd);
+
+#endif /* USE_THREADS_POSIX || USE_THREADS_WIN32 */
+
+#endif /* HEADER_CURL_THREADS_H */