Separate source from headers

1 files changed, 132 insertions, 0 deletions

diff --git a/include/zix/thread.h b/include/zix/thread.h
new file mode 100644
index 0000000..8fa562d
--- /dev/null
+++ b/include/zix/thread.h
@@ -0,0 +1,132 @@
+/*
+  Copyright 2012-2014 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef ZIX_THREAD_H
+#define ZIX_THREAD_H
+
+#include "zix/common.h"
+
+#ifdef _WIN32
+#  include <windows.h>
+#else
+#  include <errno.h>
+#  include <pthread.h>
+#endif
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   @addtogroup zix
+   @{
+   @name Thread
+   @{
+*/
+
+#ifdef _WIN32
+typedef HANDLE ZixThread;
+#else
+typedef pthread_t ZixThread;
+#endif
+
+/**
+   Initialize `thread` to a new thread.
+
+   The thread will immediately be launched, calling `function` with `arg`
+   as the only parameter.
+*/
+static inline ZixStatus
+zix_thread_create(ZixThread* thread,
+                  size_t     stack_size,
+                  void* (*function)(void*),
+                  void* arg);
+
+/**
+   Join `thread` (block until `thread` exits).
+*/
+static inline ZixStatus
+zix_thread_join(ZixThread thread, void** retval);
+
+#ifdef _WIN32
+
+static inline ZixStatus
+zix_thread_create(ZixThread* thread,
+                  size_t     stack_size,
+                  void* (*function)(void*),
+                  void* arg)
+{
+  *thread = CreateThread(
+    NULL, stack_size, (LPTHREAD_START_ROUTINE)function, arg, 0, NULL);
+  return *thread ? ZIX_STATUS_SUCCESS : ZIX_STATUS_ERROR;
+}
+
+static inline ZixStatus
+zix_thread_join(ZixThread thread, void** retval)
+{
+  (void)retval;
+
+  return WaitForSingleObject(thread, INFINITE) ? ZIX_STATUS_SUCCESS
+                                               : ZIX_STATUS_ERROR;
+}
+
+#else /* !defined(_WIN32) */
+
+static inline ZixStatus
+zix_thread_create(ZixThread* thread,
+                  size_t     stack_size,
+                  void* (*function)(void*),
+                  void* arg)
+{
+  pthread_attr_t attr;
+  pthread_attr_init(&attr);
+  pthread_attr_setstacksize(&attr, stack_size);
+
+  const int ret = pthread_create(thread, NULL, function, arg);
+  pthread_attr_destroy(&attr);
+
+  switch (ret) {
+  case EAGAIN:
+    return ZIX_STATUS_NO_MEM;
+  case EINVAL:
+    return ZIX_STATUS_BAD_ARG;
+  case EPERM:
+    return ZIX_STATUS_BAD_PERMS;
+  }
+
+  return ret ? ZIX_STATUS_ERROR : ZIX_STATUS_SUCCESS;
+}
+
+static inline ZixStatus
+zix_thread_join(ZixThread thread, void** retval)
+{
+  return pthread_join(thread, retval) ? ZIX_STATUS_ERROR : ZIX_STATUS_SUCCESS;
+}
+
+#endif
+
+/**
+   @}
+   @}
+*/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* ZIX_THREAD_H */