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LibC: Implement fflush(nullptr)
This caused all open file streams to be flushed. This commit also changes `FILE::create` to handle buffer allocation failure gracefully.
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b4e864d02d
commit
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3 changed files with 72 additions and 5 deletions
35
Userland/Libraries/LibC/bits/mutex_locker.h
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35
Userland/Libraries/LibC/bits/mutex_locker.h
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@ -0,0 +1,35 @@
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/*
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* Copyright (c) 2021, Daniel Bertalan <dani@danielbertalan.dev>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <pthread.h>
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// We don't want to bring LibThreading headers into LibC, so we use plain
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// pthread mutexes and this RAII guard.
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namespace LibC {
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class [[nodiscard]] MutexLocker {
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public:
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explicit MutexLocker(pthread_mutex_t& mutex)
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: m_mutex(mutex)
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{
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lock();
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}
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~MutexLocker()
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{
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unlock();
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}
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void lock() { pthread_mutex_lock(&m_mutex); }
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void unlock() { pthread_mutex_unlock(&m_mutex); }
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private:
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pthread_mutex_t& m_mutex;
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};
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}
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@ -5,6 +5,7 @@
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*/
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#include <AK/Array.h>
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#include <AK/IntrusiveList.h>
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#include <AK/Types.h>
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#include <LibC/bits/FILE.h>
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#include <LibC/bits/pthread_integration.h>
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@ -127,6 +128,10 @@ private:
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pid_t m_popen_child { -1 };
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Buffer m_buffer;
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__pthread_mutex_t m_mutex;
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IntrusiveListNode<FILE> m_list_node;
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public:
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using List = IntrusiveList<&FILE::m_list_node>;
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};
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class ScopedFileLock {
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