91 lines
1.6 KiB
C++
91 lines
1.6 KiB
C++
#include "FileDescriptor.h"
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#include <ulist.h>
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#ifndef EXE2MINIXFS
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#include "ArchThreads.h"
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#endif
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#include "kprintf.h"
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#include "debug.h"
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#include "assert.h"
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#include "Mutex.h"
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#include "MutexLock.h"
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#include "File.h"
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FileDescriptorList global_fd_list;
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static size_t fd_num_ = 3;
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FileDescriptor::FileDescriptor(File* file) :
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fd_(ArchThreads::atomic_add(fd_num_, 1)),
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file_(file)
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{
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debug(VFS_FILE, "Create file descriptor %u\n", getFd());
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}
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FileDescriptor::~FileDescriptor()
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{
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assert(this);
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debug(VFS_FILE, "Destroy file descriptor %p num %u\n", this, getFd());
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}
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FileDescriptorList::FileDescriptorList() :
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fds_(), fd_lock_("File descriptor list lock")
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{
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}
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FileDescriptorList::~FileDescriptorList()
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{
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for(auto fd : fds_)
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{
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fd->getFile()->closeFd(fd);
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}
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}
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int FileDescriptorList::add(FileDescriptor* fd)
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{
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debug(VFS_FILE, "FD list, add %p num %u\n", fd, fd->getFd());
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MutexLock l(fd_lock_);
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for(auto x : fds_)
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{
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if(x->getFd() == fd->getFd())
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{
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return -1;
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}
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}
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fds_.push_back(fd);
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return 0;
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}
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int FileDescriptorList::remove(FileDescriptor* fd)
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{
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debug(VFS_FILE, "FD list, remove %p num %u\n", fd, fd->getFd());
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MutexLock l(fd_lock_);
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for(auto it = fds_.begin(); it != fds_.end(); ++it)
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{
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if((*it)->getFd() == fd->getFd())
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{
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fds_.erase(it);
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return 0;
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}
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}
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return -1;
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}
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FileDescriptor* FileDescriptorList::getFileDescriptor(uint32 fd_num)
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{
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MutexLock l(fd_lock_);
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for(auto fd : fds_)
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{
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if(fd->getFd() == fd_num)
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{
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assert(fd->getFile());
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return fd;
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}
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}
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return nullptr;
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}
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