add plibsys

1 files changed, 151 insertions, 0 deletions

diff --git a/3rdparty/plibsys/src/prwlock-posix.c b/3rdparty/plibsys/src/prwlock-posix.c
new file mode 100644
index 0000000..817de8c
--- /dev/null
+++ b/3rdparty/plibsys/src/prwlock-posix.c
@@ -0,0 +1,151 @@
+/*
+ * The MIT License
+ *
+ * Copyright (C) 2016 Alexander Saprykin <saprykin.spb@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * 'Software'), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "pmem.h"
+#include "prwlock.h"
+
+#include <stdlib.h>
+#include <pthread.h>
+
+typedef pthread_rwlock_t rwlock_hdl;
+
+struct PRWLock_ {
+	rwlock_hdl hdl;
+};
+
+static pboolean pp_rwlock_unlock_any (PRWLock *lock);
+
+static pboolean
+pp_rwlock_unlock_any (PRWLock *lock)
+{
+	if (P_UNLIKELY (lock == NULL))
+		return FALSE;
+
+	if (P_LIKELY (pthread_rwlock_unlock (&lock->hdl) == 0))
+		return TRUE;
+	else {
+		P_ERROR ("PRWLock::pp_rwlock_unlock_any: pthread_rwlock_unlock() failed");
+		return FALSE;
+	}
+}
+
+P_LIB_API PRWLock *
+p_rwlock_new (void)
+{
+	PRWLock *ret;
+
+	if (P_UNLIKELY ((ret = p_malloc0 (sizeof (PRWLock))) == NULL)) {
+		P_ERROR ("PRWLock::p_rwlock_new: failed to allocate memory");
+		return NULL;
+	}
+
+	if (P_UNLIKELY (pthread_rwlock_init (&ret->hdl, NULL) != 0)) {
+		P_ERROR ("PRWLock::p_rwlock_new: pthread_rwlock_init() failed");
+		p_free (ret);
+		return NULL;
+	}
+
+	return ret;
+}
+
+P_LIB_API pboolean
+p_rwlock_reader_lock (PRWLock *lock)
+{
+	if (P_UNLIKELY (lock == NULL))
+		return FALSE;
+
+	if (P_UNLIKELY (pthread_rwlock_rdlock (&lock->hdl) == 0))
+		return TRUE;
+	else {
+		P_ERROR ("PRWLock::p_rwlock_reader_lock: pthread_rwlock_rdlock() failed");
+		return FALSE;
+	}
+}
+
+P_LIB_API pboolean
+p_rwlock_reader_trylock (PRWLock *lock)
+{
+	if (P_UNLIKELY (lock == NULL))
+		return FALSE;
+
+	return (pthread_rwlock_tryrdlock (&lock->hdl) == 0) ? TRUE : FALSE;
+}
+
+P_LIB_API pboolean
+p_rwlock_reader_unlock (PRWLock *lock)
+{
+	return pp_rwlock_unlock_any (lock);
+}
+
+P_LIB_API pboolean
+p_rwlock_writer_lock (PRWLock *lock)
+{
+	if (P_UNLIKELY (lock == NULL))
+		return FALSE;
+
+	if (P_UNLIKELY (pthread_rwlock_wrlock (&lock->hdl) == 0))
+		return TRUE;
+	else {
+		P_ERROR ("PRWLock::p_rwlock_writer_lock: pthread_rwlock_wrlock() failed");
+		return FALSE;
+	}
+}
+
+P_LIB_API pboolean
+p_rwlock_writer_trylock (PRWLock *lock)
+{
+	if (P_UNLIKELY (lock == NULL))
+		return FALSE;
+
+	return (pthread_rwlock_trywrlock (&lock->hdl) == 0) ? TRUE : FALSE;
+}
+
+P_LIB_API pboolean
+p_rwlock_writer_unlock (PRWLock *lock)
+{
+	return pp_rwlock_unlock_any (lock);
+}
+
+P_LIB_API void
+p_rwlock_free (PRWLock *lock)
+{
+	if (P_UNLIKELY (lock == NULL))
+		return;
+
+	if (P_UNLIKELY (pthread_rwlock_destroy (&lock->hdl) != 0))
+		P_ERROR ("PRWLock::p_rwlock_free: pthread_rwlock_destroy() failed");
+
+	p_free (lock);
+}
+
+void
+p_rwlock_init (void)
+{
+}
+
+void
+p_rwlock_shutdown (void)
+{
+}