Enable shared memory && add pthread support (#282)

wamr-sdk/app/libc-builtin-sysroot/include/pthread.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#ifndef _WAMR_LIB_PTHREAD_H
+#define _WAMR_LIB_PTHREAD_H
+
+/* Data type define of pthread, mutex and cond */
+typedef unsigned int pthread_t;
+typedef unsigned int pthread_mutex_t;
+typedef unsigned int pthread_cond_t;
+
+/* Thread APIs */
+int pthread_create(pthread_t *thread, const void *attr,
+                   void *(*start_routine) (void *), void *arg);
+
+int pthread_join(pthread_t thread, void **retval);
+
+int pthread_detach(pthread_t thread);
+
+int pthread_cancel(pthread_t thread);
+
+pthread_t pthread_self(void);
+
+void pthread_exit(void *retval);
+
+/* Mutex APIs */
+int pthread_mutex_init(pthread_mutex_t *mutex, const void *attr);
+
+int pthread_mutex_lock(pthread_mutex_t *mutex);
+
+int pthread_mutex_unlock(pthread_mutex_t *mutex);
+
+int pthread_mutex_destroy(pthread_mutex_t *mutex);
+
+/* Cond APIs */
+int pthread_cond_init(pthread_cond_t *cond, const void *attr);
+
+int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
+
+int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
+                           unsigned int useconds);
+
+int pthread_cond_signal(pthread_cond_t *cond);
+
+int pthread_cond_destroy(pthread_cond_t *cond);
+
+#endif /* end of _WAMR_LIB_PTHREAD_H */

wamr-sdk/app/libc-builtin-sysroot/share/defined-symbols.txt

@@ -62,3 +62,18 @@ isxdigit
 tolower
 toupper
 isalnum
+pthread_create
+pthread_join
+pthread_detach
+pthread_cancel
+pthread_self
+pthread_exit
+pthread_mutex_init
+pthread_mutex_lock
+pthread_mutex_unlock
+pthread_mutex_destroy
+pthread_cond_init
+pthread_cond_wait
+pthread_cond_timedwait
+pthread_cond_signal
+pthread_cond_destroy