From 260f05025631031b7cc4904805d5017feaf53eda Mon Sep 17 00:00:00 2001
From: Aldrik Ramaekers <aldrik.ramaekers@protonmail.com>
Date: Thu, 30 Jan 2020 21:11:12 +0100
Subject: initial commit

---
 src/linux/thread.c | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 src/linux/thread.c

(limited to 'src/linux/thread.c')

diff --git a/src/linux/thread.c b/src/linux/thread.c
new file mode 100644
index 0000000..b6295ef
--- /dev/null
+++ b/src/linux/thread.c
@@ -0,0 +1,129 @@
+/* 
+*  BSD 2-Clause “Simplified” License
+*  Copyright (c) 2019, Aldrik Ramaekers, aldrik.ramaekers@protonmail.com
+*  All rights reserved.
+*/
+
+// stop gcc from reporting implicit declaration warning..
+extern long int syscall (long int __sysno, ...);
+extern int pthread_tryjoin_np(pthread_t thread, void **retval);
+
+thread thread_start(void *(*start_routine) (void *), void *arg)
+{
+	thread result;
+	result.valid = false;
+	
+	pthread_attr_t attr;
+	int attr_init_result = pthread_attr_init(&attr);
+	if (attr_init_result)
+		return result;
+	
+	int start_thread_result = pthread_create(&result.thread, &attr, start_routine, arg);
+	if (start_thread_result)
+	{
+		pthread_attr_destroy(&attr);
+		return result;
+	}
+	
+	result.valid = true;
+	pthread_attr_destroy(&attr);
+	
+	return result;
+}
+
+inline void thread_detach(thread *thread)
+{
+	if (thread->valid)
+	{
+		pthread_detach(thread->thread);
+	}
+}
+
+inline void thread_join(thread *thread)
+{
+	if (thread->valid)
+	{
+		void *retval;
+		pthread_join(thread->thread, &retval);
+	}
+}
+
+bool thread_tryjoin(thread *thread)
+{
+	if (thread->valid)
+	{
+		void *retval;
+		bool thread_joined = !pthread_tryjoin_np(thread->thread, &retval);
+		return thread_joined;
+	}
+	return false;
+}
+
+inline void thread_stop(thread *thread)
+{
+	if (thread->valid)
+	{
+		pthread_cancel(thread->thread);
+	}
+}
+
+mutex mutex_create()
+{
+	mutex result;
+	
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_DEFAULT);
+	
+	pthread_mutex_init(&result.mutex, &attr);
+	
+	pthread_mutexattr_destroy(&attr);
+	
+	return result;
+}
+
+mutex mutex_create_recursive()
+{
+	mutex result;
+	
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+	
+	pthread_mutex_init(&result.mutex, &attr);
+	
+	pthread_mutexattr_destroy(&attr);
+	
+	return result;
+}
+
+inline void mutex_lock(mutex *mutex)
+{
+	pthread_mutex_lock(&mutex->mutex);
+}
+
+inline bool mutex_trylock(mutex *mutex)
+{
+	return !pthread_mutex_trylock(&mutex->mutex);
+}
+
+inline void mutex_unlock(mutex *mutex)
+{
+	pthread_mutex_unlock(&mutex->mutex);
+}
+
+inline void mutex_destroy(mutex *mutex)
+{
+	mutex_unlock(mutex);
+	pthread_mutex_destroy(&mutex->mutex);
+}
+
+inline u32 thread_get_id()
+{
+	return (u32)syscall(__NR_gettid);
+}
+
+inline void thread_sleep(u64 microseconds)
+{
+	usleep(microseconds);
+}
-- 
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